summaryrefslogtreecommitdiff
path: root/src/gtest/include/gtest/gtest.h
blob: cd01c7ba74d2abb405bab709b79d7e39df5a7ff3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
// Copyright 2005, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Author: wan@google.com (Zhanyong Wan)
//
// The Google C++ Testing Framework (Google Test)
//
// This header file defines the public API for Google Test.  It should be
// included by any test program that uses Google Test.
//
// IMPORTANT NOTE: Due to limitation of the C++ language, we have to
// leave some internal implementation details in this header file.
// They are clearly marked by comments like this:
//
//   // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
//
// Such code is NOT meant to be used by a user directly, and is subject
// to CHANGE WITHOUT NOTICE.  Therefore DO NOT DEPEND ON IT in a user
// program!
//
// Acknowledgment: Google Test borrowed the idea of automatic test
// registration from Barthelemy Dagenais' (barthelemy@prologique.com)
// easyUnit framework.

#ifndef GTEST_INCLUDE_GTEST_GTEST_H_
#define GTEST_INCLUDE_GTEST_GTEST_H_

#include <limits>
#include <vector>

#include "gtest/internal/gtest-internal.h"
#include "gtest/internal/gtest-string.h"
#include "gtest/gtest-death-test.h"
#include "gtest/gtest-message.h"
#include "gtest/gtest-param-test.h"
#include "gtest/gtest-printers.h"
#include "gtest/gtest_prod.h"
#include "gtest/gtest-test-part.h"
#include "gtest/gtest-typed-test.h"

// Depending on the platform, different string classes are available.
// On Linux, in addition to ::std::string, Google also makes use of
// class ::string, which has the same interface as ::std::string, but
// has a different implementation.
//
// The user can define GTEST_HAS_GLOBAL_STRING to 1 to indicate that
// ::string is available AND is a distinct type to ::std::string, or
// define it to 0 to indicate otherwise.
//
// If the user's ::std::string and ::string are the same class due to
// aliasing, he should define GTEST_HAS_GLOBAL_STRING to 0.
//
// If the user doesn't define GTEST_HAS_GLOBAL_STRING, it is defined
// heuristically.

namespace testing {

// Declares the flags.

// This flag temporary enables the disabled tests.
GTEST_DECLARE_bool_(also_run_disabled_tests);

// This flag brings the debugger on an assertion failure.
GTEST_DECLARE_bool_(break_on_failure);

// This flag controls whether Google Test catches all test-thrown exceptions
// and logs them as failures.
GTEST_DECLARE_bool_(catch_exceptions);

// This flag enables using colors in terminal output. Available values are
// "yes" to enable colors, "no" (disable colors), or "auto" (the default)
// to let Google Test decide.
GTEST_DECLARE_string_(color);

// This flag sets up the filter to select by name using a glob pattern
// the tests to run. If the filter is not given all tests are executed.
GTEST_DECLARE_string_(filter);

// This flag causes the Google Test to list tests. None of the tests listed
// are actually run if the flag is provided.
GTEST_DECLARE_bool_(list_tests);

// This flag controls whether Google Test emits a detailed XML report to a file
// in addition to its normal textual output.
GTEST_DECLARE_string_(output);

// This flags control whether Google Test prints the elapsed time for each
// test.
GTEST_DECLARE_bool_(print_time);

// This flag specifies the random number seed.
GTEST_DECLARE_int32_(random_seed);

// This flag sets how many times the tests are repeated. The default value
// is 1. If the value is -1 the tests are repeating forever.
GTEST_DECLARE_int32_(repeat);

// This flag controls whether Google Test includes Google Test internal
// stack frames in failure stack traces.
GTEST_DECLARE_bool_(show_internal_stack_frames);

// When this flag is specified, tests' order is randomized on every iteration.
GTEST_DECLARE_bool_(shuffle);

// This flag specifies the maximum number of stack frames to be
// printed in a failure message.
GTEST_DECLARE_int32_(stack_trace_depth);

// When this flag is specified, a failed assertion will throw an
// exception if exceptions are enabled, or exit the program with a
// non-zero code otherwise.
GTEST_DECLARE_bool_(throw_on_failure);

// When this flag is set with a "host:port" string, on supported
// platforms test results are streamed to the specified port on
// the specified host machine.
GTEST_DECLARE_string_(stream_result_to);

// The upper limit for valid stack trace depths.
const int kMaxStackTraceDepth = 100;

namespace internal {

class AssertHelper;
class DefaultGlobalTestPartResultReporter;
class ExecDeathTest;
class NoExecDeathTest;
class FinalSuccessChecker;
class GTestFlagSaver;
class TestResultAccessor;
class TestEventListenersAccessor;
class TestEventRepeater;
class WindowsDeathTest;
class UnitTestImpl* GetUnitTestImpl();
void ReportFailureInUnknownLocation(TestPartResult::Type result_type,
                                    const String& message);

// Converts a streamable value to a String.  A NULL pointer is
// converted to "(null)".  When the input value is a ::string,
// ::std::string, ::wstring, or ::std::wstring object, each NUL
// character in it is replaced with "\\0".
// Declared in gtest-internal.h but defined here, so that it has access
// to the definition of the Message class, required by the ARM
// compiler.
template <typename T>
String StreamableToString(const T& streamable) {
  return (Message() << streamable).GetString();
}

}  // namespace internal

// The friend relationship of some of these classes is cyclic.
// If we don't forward declare them the compiler might confuse the classes
// in friendship clauses with same named classes on the scope.
class Test;
class TestCase;
class TestInfo;
class UnitTest;

// A class for indicating whether an assertion was successful.  When
// the assertion wasn't successful, the AssertionResult object
// remembers a non-empty message that describes how it failed.
//
// To create an instance of this class, use one of the factory functions
// (AssertionSuccess() and AssertionFailure()).
//
// This class is useful for two purposes:
//   1. Defining predicate functions to be used with Boolean test assertions
//      EXPECT_TRUE/EXPECT_FALSE and their ASSERT_ counterparts
//   2. Defining predicate-format functions to be
//      used with predicate assertions (ASSERT_PRED_FORMAT*, etc).
//
// For example, if you define IsEven predicate:
//
//   testing::AssertionResult IsEven(int n) {
//     if ((n % 2) == 0)
//       return testing::AssertionSuccess();
//     else
//       return testing::AssertionFailure() << n << " is odd";
//   }
//
// Then the failed expectation EXPECT_TRUE(IsEven(Fib(5)))
// will print the message
//
//   Value of: IsEven(Fib(5))
//     Actual: false (5 is odd)
//   Expected: true
//
// instead of a more opaque
//
//   Value of: IsEven(Fib(5))
//     Actual: false
//   Expected: true
//
// in case IsEven is a simple Boolean predicate.
//
// If you expect your predicate to be reused and want to support informative
// messages in EXPECT_FALSE and ASSERT_FALSE (negative assertions show up
// about half as often as positive ones in our tests), supply messages for
// both success and failure cases:
//
//   testing::AssertionResult IsEven(int n) {
//     if ((n % 2) == 0)
//       return testing::AssertionSuccess() << n << " is even";
//     else
//       return testing::AssertionFailure() << n << " is odd";
//   }
//
// Then a statement EXPECT_FALSE(IsEven(Fib(6))) will print
//
//   Value of: IsEven(Fib(6))
//     Actual: true (8 is even)
//   Expected: false
//
// NB: Predicates that support negative Boolean assertions have reduced
// performance in positive ones so be careful not to use them in tests
// that have lots (tens of thousands) of positive Boolean assertions.
//
// To use this class with EXPECT_PRED_FORMAT assertions such as:
//
//   // Verifies that Foo() returns an even number.
//   EXPECT_PRED_FORMAT1(IsEven, Foo());
//
// you need to define:
//
//   testing::AssertionResult IsEven(const char* expr, int n) {
//     if ((n % 2) == 0)
//       return testing::AssertionSuccess();
//     else
//       return testing::AssertionFailure()
//         << "Expected: " << expr << " is even\n  Actual: it's " << n;
//   }
//
// If Foo() returns 5, you will see the following message:
//
//   Expected: Foo() is even
//     Actual: it's 5
//
class GTEST_API_ AssertionResult {
 public:
  // Copy constructor.
  // Used in EXPECT_TRUE/FALSE(assertion_result).
  AssertionResult(const AssertionResult& other);
  // Used in the EXPECT_TRUE/FALSE(bool_expression).
  explicit AssertionResult(bool success) : success_(success) {}

  // Returns true iff the assertion succeeded.
  operator bool() const { return success_; }  // NOLINT

  // Returns the assertion's negation. Used with EXPECT/ASSERT_FALSE.
  AssertionResult operator!() const;

  // Returns the text streamed into this AssertionResult. Test assertions
  // use it when they fail (i.e., the predicate's outcome doesn't match the
  // assertion's expectation). When nothing has been streamed into the
  // object, returns an empty string.
  const char* message() const {
    return message_.get() != NULL ?  message_->c_str() : "";
  }
  // TODO(vladl@google.com): Remove this after making sure no clients use it.
  // Deprecated; please use message() instead.
  const char* failure_message() const { return message(); }

  // Streams a custom failure message into this object.
  template <typename T> AssertionResult& operator<<(const T& value) {
    AppendMessage(Message() << value);
    return *this;
  }

  // Allows streaming basic output manipulators such as endl or flush into
  // this object.
  AssertionResult& operator<<(
      ::std::ostream& (*basic_manipulator)(::std::ostream& stream)) {
    AppendMessage(Message() << basic_manipulator);
    return *this;
  }

 private:
  // Appends the contents of message to message_.
  void AppendMessage(const Message& a_message) {
    if (message_.get() == NULL)
      message_.reset(new ::std::string);
    message_->append(a_message.GetString().c_str());
  }

  // Stores result of the assertion predicate.
  bool success_;
  // Stores the message describing the condition in case the expectation
  // construct is not satisfied with the predicate's outcome.
  // Referenced via a pointer to avoid taking too much stack frame space
  // with test assertions.
  internal::scoped_ptr< ::std::string> message_;

  GTEST_DISALLOW_ASSIGN_(AssertionResult);
};

// Makes a successful assertion result.
GTEST_API_ AssertionResult AssertionSuccess();

// Makes a failed assertion result.
GTEST_API_ AssertionResult AssertionFailure();

// Makes a failed assertion result with the given failure message.
// Deprecated; use AssertionFailure() << msg.
GTEST_API_ AssertionResult AssertionFailure(const Message& msg);

// The abstract class that all tests inherit from.
//
// In Google Test, a unit test program contains one or many TestCases, and
// each TestCase contains one or many Tests.
//
// When you define a test using the TEST macro, you don't need to
// explicitly derive from Test - the TEST macro automatically does
// this for you.
//
// The only time you derive from Test is when defining a test fixture
// to be used a TEST_F.  For example:
//
//   class FooTest : public testing::Test {
//    protected:
//     virtual void SetUp() { ... }
//     virtual void TearDown() { ... }
//     ...
//   };
//
//   TEST_F(FooTest, Bar) { ... }
//   TEST_F(FooTest, Baz) { ... }
//
// Test is not copyable.
class GTEST_API_ Test {
 public:
  friend class TestInfo;

  // Defines types for pointers to functions that set up and tear down
  // a test case.
  typedef internal::SetUpTestCaseFunc SetUpTestCaseFunc;
  typedef internal::TearDownTestCaseFunc TearDownTestCaseFunc;

  // The d'tor is virtual as we intend to inherit from Test.
  virtual ~Test();

  // Sets up the stuff shared by all tests in this test case.
  //
  // Google Test will call Foo::SetUpTestCase() before running the first
  // test in test case Foo.  Hence a sub-class can define its own
  // SetUpTestCase() method to shadow the one defined in the super
  // class.
  static void SetUpTestCase() {}

  // Tears down the stuff shared by all tests in this test case.
  //
  // Google Test will call Foo::TearDownTestCase() after running the last
  // test in test case Foo.  Hence a sub-class can define its own
  // TearDownTestCase() method to shadow the one defined in the super
  // class.
  static void TearDownTestCase() {}

  // Returns true iff the current test has a fatal failure.
  static bool HasFatalFailure();

  // Returns true iff the current test has a non-fatal failure.
  static bool HasNonfatalFailure();

  // Returns true iff the current test has a (either fatal or
  // non-fatal) failure.
  static bool HasFailure() { return HasFatalFailure() || HasNonfatalFailure(); }

  // Logs a property for the current test.  Only the last value for a given
  // key is remembered.
  // These are public static so they can be called from utility functions
  // that are not members of the test fixture.
  // The arguments are const char* instead strings, as Google Test is used
  // on platforms where string doesn't compile.
  //
  // Note that a driving consideration for these RecordProperty methods
  // was to produce xml output suited to the Greenspan charting utility,
  // which at present will only chart values that fit in a 32-bit int. It
  // is the user's responsibility to restrict their values to 32-bit ints
  // if they intend them to be used with Greenspan.
  static void RecordProperty(const char* key, const char* value);
  static void RecordProperty(const char* key, int value);

 protected:
  // Creates a Test object.
  Test();

  // Sets up the test fixture.
  virtual void SetUp();

  // Tears down the test fixture.
  virtual void TearDown();

 private:
  // Returns true iff the current test has the same fixture class as
  // the first test in the current test case.
  static bool HasSameFixtureClass();

  // Runs the test after the test fixture has been set up.
  //
  // A sub-class must implement this to define the test logic.
  //
  // DO NOT OVERRIDE THIS FUNCTION DIRECTLY IN A USER PROGRAM.
  // Instead, use the TEST or TEST_F macro.
  virtual void TestBody() = 0;

  // Sets up, executes, and tears down the test.
  void Run();

  // Deletes self.  We deliberately pick an unusual name for this
  // internal method to avoid clashing with names used in user TESTs.
  void DeleteSelf_() { delete this; }

  // Uses a GTestFlagSaver to save and restore all Google Test flags.
  const internal::GTestFlagSaver* const gtest_flag_saver_;

  // Often a user mis-spells SetUp() as Setup() and spends a long time
  // wondering why it is never called by Google Test.  The declaration of
  // the following method is solely for catching such an error at
  // compile time:
  //
  //   - The return type is deliberately chosen to be not void, so it
  //   will be a conflict if a user declares void Setup() in his test
  //   fixture.
  //
  //   - This method is private, so it will be another compiler error
  //   if a user calls it from his test fixture.
  //
  // DO NOT OVERRIDE THIS FUNCTION.
  //
  // If you see an error about overriding the following function or
  // about it being private, you have mis-spelled SetUp() as Setup().
  struct Setup_should_be_spelled_SetUp {};
  virtual Setup_should_be_spelled_SetUp* Setup() { return NULL; }

  // We disallow copying Tests.
  GTEST_DISALLOW_COPY_AND_ASSIGN_(Test);
};

typedef internal::TimeInMillis TimeInMillis;

// A copyable object representing a user specified test property which can be
// output as a key/value string pair.
//
// Don't inherit from TestProperty as its destructor is not virtual.
class TestProperty {
 public:
  // C'tor.  TestProperty does NOT have a default constructor.
  // Always use this constructor (with parameters) to create a
  // TestProperty object.
  TestProperty(const char* a_key, const char* a_value) :
    key_(a_key), value_(a_value) {
  }

  // Gets the user supplied key.
  const char* key() const {
    return key_.c_str();
  }

  // Gets the user supplied value.
  const char* value() const {
    return value_.c_str();
  }

  // Sets a new value, overriding the one supplied in the constructor.
  void SetValue(const char* new_value) {
    value_ = new_value;
  }

 private:
  // The key supplied by the user.
  internal::String key_;
  // The value supplied by the user.
  internal::String value_;
};

// The result of a single Test.  This includes a list of
// TestPartResults, a list of TestProperties, a count of how many
// death tests there are in the Test, and how much time it took to run
// the Test.
//
// TestResult is not copyable.
class GTEST_API_ TestResult {
 public:
  // Creates an empty TestResult.
  TestResult();

  // D'tor.  Do not inherit from TestResult.
  ~TestResult();

  // Gets the number of all test parts.  This is the sum of the number
  // of successful test parts and the number of failed test parts.
  int total_part_count() const;

  // Returns the number of the test properties.
  int test_property_count() const;

  // Returns true iff the test passed (i.e. no test part failed).
  bool Passed() const { return !Failed(); }

  // Returns true iff the test failed.
  bool Failed() const;

  // Returns true iff the test fatally failed.
  bool HasFatalFailure() const;

  // Returns true iff the test has a non-fatal failure.
  bool HasNonfatalFailure() const;

  // Returns the elapsed time, in milliseconds.
  TimeInMillis elapsed_time() const { return elapsed_time_; }

  // Returns the i-th test part result among all the results. i can range
  // from 0 to test_property_count() - 1. If i is not in that range, aborts
  // the program.
  const TestPartResult& GetTestPartResult(int i) const;

  // Returns the i-th test property. i can range from 0 to
  // test_property_count() - 1. If i is not in that range, aborts the
  // program.
  const TestProperty& GetTestProperty(int i) const;

 private:
  friend class TestInfo;
  friend class UnitTest;
  friend class internal::DefaultGlobalTestPartResultReporter;
  friend class internal::ExecDeathTest;
  friend class internal::TestResultAccessor;
  friend class internal::UnitTestImpl;
  friend class internal::WindowsDeathTest;

  // Gets the vector of TestPartResults.
  const std::vector<TestPartResult>& test_part_results() const {
    return test_part_results_;
  }

  // Gets the vector of TestProperties.
  const std::vector<TestProperty>& test_properties() const {
    return test_properties_;
  }

  // Sets the elapsed time.
  void set_elapsed_time(TimeInMillis elapsed) { elapsed_time_ = elapsed; }

  // Adds a test property to the list. The property is validated and may add
  // a non-fatal failure if invalid (e.g., if it conflicts with reserved
  // key names). If a property is already recorded for the same key, the
  // value will be updated, rather than storing multiple values for the same
  // key.
  void RecordProperty(const TestProperty& test_property);

  // Adds a failure if the key is a reserved attribute of Google Test
  // testcase tags.  Returns true if the property is valid.
  // TODO(russr): Validate attribute names are legal and human readable.
  static bool ValidateTestProperty(const TestProperty& test_property);

  // Adds a test part result to the list.
  void AddTestPartResult(const TestPartResult& test_part_result);

  // Returns the death test count.
  int death_test_count() const { return death_test_count_; }

  // Increments the death test count, returning the new count.
  int increment_death_test_count() { return ++death_test_count_; }

  // Clears the test part results.
  void ClearTestPartResults();

  // Clears the object.
  void Clear();

  // Protects mutable state of the property vector and of owned
  // properties, whose values may be updated.
  internal::Mutex test_properites_mutex_;

  // The vector of TestPartResults
  std::vector<TestPartResult> test_part_results_;
  // The vector of TestProperties
  std::vector<TestProperty> test_properties_;
  // Running count of death tests.
  int death_test_count_;
  // The elapsed time, in milliseconds.
  TimeInMillis elapsed_time_;

  // We disallow copying TestResult.
  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestResult);
};  // class TestResult

// A TestInfo object stores the following information about a test:
//
//   Test case name
//   Test name
//   Whether the test should be run
//   A function pointer that creates the test object when invoked
//   Test result
//
// The constructor of TestInfo registers itself with the UnitTest
// singleton such that the RUN_ALL_TESTS() macro knows which tests to
// run.
class GTEST_API_ TestInfo {
 public:
  // Destructs a TestInfo object.  This function is not virtual, so
  // don't inherit from TestInfo.
  ~TestInfo();

  // Returns the test case name.
  const char* test_case_name() const { return test_case_name_.c_str(); }

  // Returns the test name.
  const char* name() const { return name_.c_str(); }

  // Returns the name of the parameter type, or NULL if this is not a typed
  // or a type-parameterized test.
  const char* type_param() const {
    if (type_param_.get() != NULL)
      return type_param_->c_str();
    return NULL;
  }

  // Returns the text representation of the value parameter, or NULL if this
  // is not a value-parameterized test.
  const char* value_param() const {
    if (value_param_.get() != NULL)
      return value_param_->c_str();
    return NULL;
  }

  // Returns true if this test should run, that is if the test is not disabled
  // (or it is disabled but the also_run_disabled_tests flag has been specified)
  // and its full name matches the user-specified filter.
  //
  // Google Test allows the user to filter the tests by their full names.
  // The full name of a test Bar in test case Foo is defined as
  // "Foo.Bar".  Only the tests that match the filter will run.
  //
  // A filter is a colon-separated list of glob (not regex) patterns,
  // optionally followed by a '-' and a colon-separated list of
  // negative patterns (tests to exclude).  A test is run if it
  // matches one of the positive patterns and does not match any of
  // the negative patterns.
  //
  // For example, *A*:Foo.* is a filter that matches any string that
  // contains the character 'A' or starts with "Foo.".
  bool should_run() const { return should_run_; }

  // Returns the result of the test.
  const TestResult* result() const { return &result_; }

 private:

#if GTEST_HAS_DEATH_TEST
  friend class internal::DefaultDeathTestFactory;
#endif  // GTEST_HAS_DEATH_TEST
  friend class Test;
  friend class TestCase;
  friend class internal::UnitTestImpl;
  friend TestInfo* internal::MakeAndRegisterTestInfo(
      const char* test_case_name, const char* name,
      const char* type_param,
      const char* value_param,
      internal::TypeId fixture_class_id,
      Test::SetUpTestCaseFunc set_up_tc,
      Test::TearDownTestCaseFunc tear_down_tc,
      internal::TestFactoryBase* factory);

  // Constructs a TestInfo object. The newly constructed instance assumes
  // ownership of the factory object.
  TestInfo(const char* test_case_name, const char* name,
           const char* a_type_param,
           const char* a_value_param,
           internal::TypeId fixture_class_id,
           internal::TestFactoryBase* factory);

  // Increments the number of death tests encountered in this test so
  // far.
  int increment_death_test_count() {
    return result_.increment_death_test_count();
  }

  // Creates the test object, runs it, records its result, and then
  // deletes it.
  void Run();

  static void ClearTestResult(TestInfo* test_info) {
    test_info->result_.Clear();
  }

  // These fields are immutable properties of the test.
  const std::string test_case_name_;     // Test case name
  const std::string name_;               // Test name
  // Name of the parameter type, or NULL if this is not a typed or a
  // type-parameterized test.
  const internal::scoped_ptr<const ::std::string> type_param_;
  // Text representation of the value parameter, or NULL if this is not a
  // value-parameterized test.
  const internal::scoped_ptr<const ::std::string> value_param_;
  const internal::TypeId fixture_class_id_;   // ID of the test fixture class
  bool should_run_;                 // True iff this test should run
  bool is_disabled_;                // True iff this test is disabled
  bool matches_filter_;             // True if this test matches the
                                    // user-specified filter.
  internal::TestFactoryBase* const factory_;  // The factory that creates
                                              // the test object

  // This field is mutable and needs to be reset before running the
  // test for the second time.
  TestResult result_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestInfo);
};

// A test case, which consists of a vector of TestInfos.
//
// TestCase is not copyable.
class GTEST_API_ TestCase {
 public:
  // Creates a TestCase with the given name.
  //
  // TestCase does NOT have a default constructor.  Always use this
  // constructor to create a TestCase object.
  //
  // Arguments:
  //
  //   name:         name of the test case
  //   a_type_param: the name of the test's type parameter, or NULL if
  //                 this is not a type-parameterized test.
  //   set_up_tc:    pointer to the function that sets up the test case
  //   tear_down_tc: pointer to the function that tears down the test case
  TestCase(const char* name, const char* a_type_param,
           Test::SetUpTestCaseFunc set_up_tc,
           Test::TearDownTestCaseFunc tear_down_tc);

  // Destructor of TestCase.
  virtual ~TestCase();

  // Gets the name of the TestCase.
  const char* name() const { return name_.c_str(); }

  // Returns the name of the parameter type, or NULL if this is not a
  // type-parameterized test case.
  const char* type_param() const {
    if (type_param_.get() != NULL)
      return type_param_->c_str();
    return NULL;
  }

  // Returns true if any test in this test case should run.
  bool should_run() const { return should_run_; }

  // Gets the number of successful tests in this test case.
  int successful_test_count() const;

  // Gets the number of failed tests in this test case.
  int failed_test_count() const;

  // Gets the number of disabled tests in this test case.
  int disabled_test_count() const;

  // Get the number of tests in this test case that should run.
  int test_to_run_count() const;

  // Gets the number of all tests in this test case.
  int total_test_count() const;

  // Returns true iff the test case passed.
  bool Passed() const { return !Failed(); }

  // Returns true iff the test case failed.
  bool Failed() const { return failed_test_count() > 0; }

  // Returns the elapsed time, in milliseconds.
  TimeInMillis elapsed_time() const { return elapsed_time_; }

  // Returns the i-th test among all the tests. i can range from 0 to
  // total_test_count() - 1. If i is not in that range, returns NULL.
  const TestInfo* GetTestInfo(int i) const;

 private:
  friend class Test;
  friend class internal::UnitTestImpl;

  // Gets the (mutable) vector of TestInfos in this TestCase.
  std::vector<TestInfo*>& test_info_list() { return test_info_list_; }

  // Gets the (immutable) vector of TestInfos in this TestCase.
  const std::vector<TestInfo*>& test_info_list() const {
    return test_info_list_;
  }

  // Returns the i-th test among all the tests. i can range from 0 to
  // total_test_count() - 1. If i is not in that range, returns NULL.
  TestInfo* GetMutableTestInfo(int i);

  // Sets the should_run member.
  void set_should_run(bool should) { should_run_ = should; }

  // Adds a TestInfo to this test case.  Will delete the TestInfo upon
  // destruction of the TestCase object.
  void AddTestInfo(TestInfo * test_info);

  // Clears the results of all tests in this test case.
  void ClearResult();

  // Clears the results of all tests in the given test case.
  static void ClearTestCaseResult(TestCase* test_case) {
    test_case->ClearResult();
  }

  // Runs every test in this TestCase.
  void Run();

  // Runs SetUpTestCase() for this TestCase.  This wrapper is needed
  // for catching exceptions thrown from SetUpTestCase().
  void RunSetUpTestCase() { (*set_up_tc_)(); }

  // Runs TearDownTestCase() for this TestCase.  This wrapper is
  // needed for catching exceptions thrown from TearDownTestCase().
  void RunTearDownTestCase() { (*tear_down_tc_)(); }

  // Returns true iff test passed.
  static bool TestPassed(const TestInfo* test_info) {
    return test_info->should_run() && test_info->result()->Passed();
  }

  // Returns true iff test failed.
  static bool TestFailed(const TestInfo* test_info) {
    return test_info->should_run() && test_info->result()->Failed();
  }

  // Returns true iff test is disabled.
  static bool TestDisabled(const TestInfo* test_info) {
    return test_info->is_disabled_;
  }

  // Returns true if the given test should run.
  static bool ShouldRunTest(const TestInfo* test_info) {
    return test_info->should_run();
  }

  // Shuffles the tests in this test case.
  void ShuffleTests(internal::Random* random);

  // Restores the test order to before the first shuffle.
  void UnshuffleTests();

  // Name of the test case.
  internal::String name_;
  // Name of the parameter type, or NULL if this is not a typed or a
  // type-parameterized test.
  const internal::scoped_ptr<const ::std::string> type_param_;
  // The vector of TestInfos in their original order.  It owns the
  // elements in the vector.
  std::vector<TestInfo*> test_info_list_;
  // Provides a level of indirection for the test list to allow easy
  // shuffling and restoring the test order.  The i-th element in this
  // vector is the index of the i-th test in the shuffled test list.
  std::vector<int> test_indices_;
  // Pointer to the function that sets up the test case.
  Test::SetUpTestCaseFunc set_up_tc_;
  // Pointer to the function that tears down the test case.
  Test::TearDownTestCaseFunc tear_down_tc_;
  // True iff any test in this test case should run.
  bool should_run_;
  // Elapsed time, in milliseconds.
  TimeInMillis elapsed_time_;

  // We disallow copying TestCases.
  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestCase);
};

// An Environment object is capable of setting up and tearing down an
// environment.  The user should subclass this to define his own
// environment(s).
//
// An Environment object does the set-up and tear-down in virtual
// methods SetUp() and TearDown() instead of the constructor and the
// destructor, as:
//
//   1. You cannot safely throw from a destructor.  This is a problem
//      as in some cases Google Test is used where exceptions are enabled, and
//      we may want to implement ASSERT_* using exceptions where they are
//      available.
//   2. You cannot use ASSERT_* directly in a constructor or
//      destructor.
class Environment {
 public:
  // The d'tor is virtual as we need to subclass Environment.
  virtual ~Environment() {}

  // Override this to define how to set up the environment.
  virtual void SetUp() {}

  // Override this to define how to tear down the environment.
  virtual void TearDown() {}
 private:
  // If you see an error about overriding the following function or
  // about it being private, you have mis-spelled SetUp() as Setup().
  struct Setup_should_be_spelled_SetUp {};
  virtual Setup_should_be_spelled_SetUp* Setup() { return NULL; }
};

// The interface for tracing execution of tests. The methods are organized in
// the order the corresponding events are fired.
class TestEventListener {
 public:
  virtual ~TestEventListener() {}

  // Fired before any test activity starts.
  virtual void OnTestProgramStart(const UnitTest& unit_test) = 0;

  // Fired before each iteration of tests starts.  There may be more than
  // one iteration if GTEST_FLAG(repeat) is set. iteration is the iteration
  // index, starting from 0.
  virtual void OnTestIterationStart(const UnitTest& unit_test,
                                    int iteration) = 0;

  // Fired before environment set-up for each iteration of tests starts.
  virtual void OnEnvironmentsSetUpStart(const UnitTest& unit_test) = 0;

  // Fired after environment set-up for each iteration of tests ends.
  virtual void OnEnvironmentsSetUpEnd(const UnitTest& unit_test) = 0;

  // Fired before the test case starts.
  virtual void OnTestCaseStart(const TestCase& test_case) = 0;

  // Fired before the test starts.
  virtual void OnTestStart(const TestInfo& test_info) = 0;

  // Fired after a failed assertion or a SUCCEED() invocation.
  virtual void OnTestPartResult(const TestPartResult& test_part_result) = 0;

  // Fired after the test ends.
  virtual void OnTestEnd(const TestInfo& test_info) = 0;

  // Fired after the test case ends.
  virtual void OnTestCaseEnd(const TestCase& test_case) = 0;

  // Fired before environment tear-down for each iteration of tests starts.
  virtual void OnEnvironmentsTearDownStart(const UnitTest& unit_test) = 0;

  // Fired after environment tear-down for each iteration of tests ends.
  virtual void OnEnvironmentsTearDownEnd(const UnitTest& unit_test) = 0;

  // Fired after each iteration of tests finishes.
  virtual void OnTestIterationEnd(const UnitTest& unit_test,
                                  int iteration) = 0;

  // Fired after all test activities have ended.
  virtual void OnTestProgramEnd(const UnitTest& unit_test) = 0;
};

// The convenience class for users who need to override just one or two
// methods and are not concerned that a possible change to a signature of
// the methods they override will not be caught during the build.  For
// comments about each method please see the definition of TestEventListener
// above.
class EmptyTestEventListener : public TestEventListener {
 public:
  virtual void OnTestProgramStart(const UnitTest& /*unit_test*/) {}
  virtual void OnTestIterationStart(const UnitTest& /*unit_test*/,
                                    int /*iteration*/) {}
  virtual void OnEnvironmentsSetUpStart(const UnitTest& /*unit_test*/) {}
  virtual void OnEnvironmentsSetUpEnd(const UnitTest& /*unit_test*/) {}
  virtual void OnTestCaseStart(const TestCase& /*test_case*/) {}
  virtual void OnTestStart(const TestInfo& /*test_info*/) {}
  virtual void OnTestPartResult(const TestPartResult& /*test_part_result*/) {}
  virtual void OnTestEnd(const TestInfo& /*test_info*/) {}
  virtual void OnTestCaseEnd(const TestCase& /*test_case*/) {}
  virtual void OnEnvironmentsTearDownStart(const UnitTest& /*unit_test*/) {}
  virtual void OnEnvironmentsTearDownEnd(const UnitTest& /*unit_test*/) {}
  virtual void OnTestIterationEnd(const UnitTest& /*unit_test*/,
                                  int /*iteration*/) {}
  virtual void OnTestProgramEnd(const UnitTest& /*unit_test*/) {}
};

// TestEventListeners lets users add listeners to track events in Google Test.
class GTEST_API_ TestEventListeners {
 public:
  TestEventListeners();
  ~TestEventListeners();

  // Appends an event listener to the end of the list. Google Test assumes
  // the ownership of the listener (i.e. it will delete the listener when
  // the test program finishes).
  void Append(TestEventListener* listener);

  // Removes the given event listener from the list and returns it.  It then
  // becomes the caller's responsibility to delete the listener. Returns
  // NULL if the listener is not found in the list.
  TestEventListener* Release(TestEventListener* listener);

  // Returns the standard listener responsible for the default console
  // output.  Can be removed from the listeners list to shut down default
  // console output.  Note that removing this object from the listener list
  // with Release transfers its ownership to the caller and makes this
  // function return NULL the next time.
  TestEventListener* default_result_printer() const {
    return default_result_printer_;
  }

  // Returns the standard listener responsible for the default XML output
  // controlled by the --gtest_output=xml flag.  Can be removed from the
  // listeners list by users who want to shut down the default XML output
  // controlled by this flag and substitute it with custom one.  Note that
  // removing this object from the listener list with Release transfers its
  // ownership to the caller and makes this function return NULL the next
  // time.
  TestEventListener* default_xml_generator() const {
    return default_xml_generator_;
  }

 private:
  friend class TestCase;
  friend class TestInfo;
  friend class internal::DefaultGlobalTestPartResultReporter;
  friend class internal::NoExecDeathTest;
  friend class internal::TestEventListenersAccessor;
  friend class internal::UnitTestImpl;

  // Returns repeater that broadcasts the TestEventListener events to all
  // subscribers.
  TestEventListener* repeater();

  // Sets the default_result_printer attribute to the provided listener.
  // The listener is also added to the listener list and previous
  // default_result_printer is removed from it and deleted. The listener can
  // also be NULL in which case it will not be added to the list. Does
  // nothing if the previous and the current listener objects are the same.
  void SetDefaultResultPrinter(TestEventListener* listener);

  // Sets the default_xml_generator attribute to the provided listener.  The
  // listener is also added to the listener list and previous
  // default_xml_generator is removed from it and deleted. The listener can
  // also be NULL in which case it will not be added to the list. Does
  // nothing if the previous and the current listener objects are the same.
  void SetDefaultXmlGenerator(TestEventListener* listener);

  // Controls whether events will be forwarded by the repeater to the
  // listeners in the list.
  bool EventForwardingEnabled() const;
  void SuppressEventForwarding();

  // The actual list of listeners.
  internal::TestEventRepeater* repeater_;
  // Listener responsible for the standard result output.
  TestEventListener* default_result_printer_;
  // Listener responsible for the creation of the XML output file.
  TestEventListener* default_xml_generator_;

  // We disallow copying TestEventListeners.
  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestEventListeners);
};

// A UnitTest consists of a vector of TestCases.
//
// This is a singleton class.  The only instance of UnitTest is
// created when UnitTest::GetInstance() is first called.  This
// instance is never deleted.
//
// UnitTest is not copyable.
//
// This class is thread-safe as long as the methods are called
// according to their specification.
class GTEST_API_ UnitTest {
 public:
  // Gets the singleton UnitTest object.  The first time this method
  // is called, a UnitTest object is constructed and returned.
  // Consecutive calls will return the same object.
  static UnitTest* GetInstance();

  // Runs all tests in this UnitTest object and prints the result.
  // Returns 0 if successful, or 1 otherwise.
  //
  // This method can only be called from the main thread.
  //
  // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
  int Run() GTEST_MUST_USE_RESULT_;

  // Returns the working directory when the first TEST() or TEST_F()
  // was executed.  The UnitTest object owns the string.
  const char* original_working_dir() const;

  // Returns the TestCase object for the test that's currently running,
  // or NULL if no test is running.
  const TestCase* current_test_case() const;

  // Returns the TestInfo object for the test that's currently running,
  // or NULL if no test is running.
  const TestInfo* current_test_info() const;

  // Returns the random seed used at the start of the current test run.
  int random_seed() const;

#if GTEST_HAS_PARAM_TEST
  // Returns the ParameterizedTestCaseRegistry object used to keep track of
  // value-parameterized tests and instantiate and register them.
  //
  // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
  internal::ParameterizedTestCaseRegistry& parameterized_test_registry();
#endif  // GTEST_HAS_PARAM_TEST

  // Gets the number of successful test cases.
  int successful_test_case_count() const;

  // Gets the number of failed test cases.
  int failed_test_case_count() const;

  // Gets the number of all test cases.
  int total_test_case_count() const;

  // Gets the number of all test cases that contain at least one test
  // that should run.
  int test_case_to_run_count() const;

  // Gets the number of successful tests.
  int successful_test_count() const;

  // Gets the number of failed tests.
  int failed_test_count() const;

  // Gets the number of disabled tests.
  int disabled_test_count() const;

  // Gets the number of all tests.
  int total_test_count() const;

  // Gets the number of tests that should run.
  int test_to_run_count() const;

  // Gets the elapsed time, in milliseconds.
  TimeInMillis elapsed_time() const;

  // Returns true iff the unit test passed (i.e. all test cases passed).
  bool Passed() const;

  // Returns true iff the unit test failed (i.e. some test case failed
  // or something outside of all tests failed).
  bool Failed() const;

  // Gets the i-th test case among all the test cases. i can range from 0 to
  // total_test_case_count() - 1. If i is not in that range, returns NULL.
  const TestCase* GetTestCase(int i) const;

  // Returns the list of event listeners that can be used to track events
  // inside Google Test.
  TestEventListeners& listeners();

 private:
  // Registers and returns a global test environment.  When a test
  // program is run, all global test environments will be set-up in
  // the order they were registered.  After all tests in the program
  // have finished, all global test environments will be torn-down in
  // the *reverse* order they were registered.
  //
  // The UnitTest object takes ownership of the given environment.
  //
  // This method can only be called from the main thread.
  Environment* AddEnvironment(Environment* env);

  // Adds a TestPartResult to the current TestResult object.  All
  // Google Test assertion macros (e.g. ASSERT_TRUE, EXPECT_EQ, etc)
  // eventually call this to report their results.  The user code
  // should use the assertion macros instead of calling this directly.
  void AddTestPartResult(TestPartResult::Type result_type,
                         const char* file_name,
                         int line_number,
                         const internal::String& message,
                         const internal::String& os_stack_trace);

  // Adds a TestProperty to the current TestResult object. If the result already
  // contains a property with the same key, the value will be updated.
  void RecordPropertyForCurrentTest(const char* key, const char* value);

  // Gets the i-th test case among all the test cases. i can range from 0 to
  // total_test_case_count() - 1. If i is not in that range, returns NULL.
  TestCase* GetMutableTestCase(int i);

  // Accessors for the implementation object.
  internal::UnitTestImpl* impl() { return impl_; }
  const internal::UnitTestImpl* impl() const { return impl_; }

  // These classes and funcions are friends as they need to access private
  // members of UnitTest.
  friend class Test;
  friend class internal::AssertHelper;
  friend class internal::ScopedTrace;
  friend Environment* AddGlobalTestEnvironment(Environment* env);
  friend internal::UnitTestImpl* internal::GetUnitTestImpl();
  friend void internal::ReportFailureInUnknownLocation(
      TestPartResult::Type result_type,
      const internal::String& message);

  // Creates an empty UnitTest.
  UnitTest();

  // D'tor
  virtual ~UnitTest();

  // Pushes a trace defined by SCOPED_TRACE() on to the per-thread
  // Google Test trace stack.
  void PushGTestTrace(const internal::TraceInfo& trace);

  // Pops a trace from the per-thread Google Test trace stack.
  void PopGTestTrace();

  // Protects mutable state in *impl_.  This is mutable as some const
  // methods need to lock it too.
  mutable internal::Mutex mutex_;

  // Opaque implementation object.  This field is never changed once
  // the object is constructed.  We don't mark it as const here, as
  // doing so will cause a warning in the constructor of UnitTest.
  // Mutable state in *impl_ is protected by mutex_.
  internal::UnitTestImpl* impl_;

  // We disallow copying UnitTest.
  GTEST_DISALLOW_COPY_AND_ASSIGN_(UnitTest);
};

// A convenient wrapper for adding an environment for the test
// program.
//
// You should call this before RUN_ALL_TESTS() is called, probably in
// main().  If you use gtest_main, you need to call this before main()
// starts for it to take effect.  For example, you can define a global
// variable like this:
//
//   testing::Environment* const foo_env =
//       testing::AddGlobalTestEnvironment(new FooEnvironment);
//
// However, we strongly recommend you to write your own main() and
// call AddGlobalTestEnvironment() there, as relying on initialization
// of global variables makes the code harder to read and may cause
// problems when you register multiple environments from different
// translation units and the environments have dependencies among them
// (remember that the compiler doesn't guarantee the order in which
// global variables from different translation units are initialized).
inline Environment* AddGlobalTestEnvironment(Environment* env) {
  return UnitTest::GetInstance()->AddEnvironment(env);
}

// Initializes Google Test.  This must be called before calling
// RUN_ALL_TESTS().  In particular, it parses a command line for the
// flags that Google Test recognizes.  Whenever a Google Test flag is
// seen, it is removed from argv, and *argc is decremented.
//
// No value is returned.  Instead, the Google Test flag variables are
// updated.
//
// Calling the function for the second time has no user-visible effect.
GTEST_API_ void InitGoogleTest(int* argc, char** argv);

// This overloaded version can be used in Windows programs compiled in
// UNICODE mode.
GTEST_API_ void InitGoogleTest(int* argc, wchar_t** argv);

namespace internal {

// Formats a comparison assertion (e.g. ASSERT_EQ, EXPECT_LT, and etc)
// operand to be used in a failure message.  The type (but not value)
// of the other operand may affect the format.  This allows us to
// print a char* as a raw pointer when it is compared against another
// char*, and print it as a C string when it is compared against an
// std::string object, for example.
//
// The default implementation ignores the type of the other operand.
// Some specialized versions are used to handle formatting wide or
// narrow C strings.
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
template <typename T1, typename T2>
String FormatForComparisonFailureMessage(const T1& value,
                                         const T2& /* other_operand */) {
  // C++Builder compiles this incorrectly if the namespace isn't explicitly
  // given.
  return ::testing::PrintToString(value);
}

// The helper function for {ASSERT|EXPECT}_EQ.
template <typename T1, typename T2>
AssertionResult CmpHelperEQ(const char* expected_expression,
                            const char* actual_expression,
                            const T1& expected,
                            const T2& actual) {
#ifdef _MSC_VER
# pragma warning(push)          // Saves the current warning state.
# pragma warning(disable:4389)  // Temporarily disables warning on
                               // signed/unsigned mismatch.
#endif

  if (expected == actual) {
    return AssertionSuccess();
  }

#ifdef _MSC_VER
# pragma warning(pop)          // Restores the warning state.
#endif

  return EqFailure(expected_expression,
                   actual_expression,
                   FormatForComparisonFailureMessage(expected, actual),
                   FormatForComparisonFailureMessage(actual, expected),
                   false);
}

// With this overloaded version, we allow anonymous enums to be used
// in {ASSERT|EXPECT}_EQ when compiled with gcc 4, as anonymous enums
// can be implicitly cast to BiggestInt.
GTEST_API_ AssertionResult CmpHelperEQ(const char* expected_expression,
                                       const char* actual_expression,
                                       BiggestInt expected,
                                       BiggestInt actual);

// The helper class for {ASSERT|EXPECT}_EQ.  The template argument
// lhs_is_null_literal is true iff the first argument to ASSERT_EQ()
// is a null pointer literal.  The following default implementation is
// for lhs_is_null_literal being false.
template <bool lhs_is_null_literal>
class EqHelper {
 public:
  // This templatized version is for the general case.
  template <typename T1, typename T2>
  static AssertionResult Compare(const char* expected_expression,
                                 const char* actual_expression,
                                 const T1& expected,
                                 const T2& actual) {
    return CmpHelperEQ(expected_expression, actual_expression, expected,
                       actual);
  }

  // With this overloaded version, we allow anonymous enums to be used
  // in {ASSERT|EXPECT}_EQ when compiled with gcc 4, as anonymous
  // enums can be implicitly cast to BiggestInt.
  //
  // Even though its body looks the same as the above version, we
  // cannot merge the two, as it will make anonymous enums unhappy.
  static AssertionResult Compare(const char* expected_expression,
                                 const char* actual_expression,
                                 BiggestInt expected,
                                 BiggestInt actual) {
    return CmpHelperEQ(expected_expression, actual_expression, expected,
                       actual);
  }
};

// This specialization is used when the first argument to ASSERT_EQ()
// is a null pointer literal, like NULL, false, or 0.
template <>
class EqHelper<true> {
 public:
  // We define two overloaded versions of Compare().  The first
  // version will be picked when the second argument to ASSERT_EQ() is
  // NOT a pointer, e.g. ASSERT_EQ(0, AnIntFunction()) or
  // EXPECT_EQ(false, a_bool).
  template <typename T1, typename T2>
  static AssertionResult Compare(
      const char* expected_expression,
      const char* actual_expression,
      const T1& expected,
      const T2& actual,
      // The following line prevents this overload from being considered if T2
      // is not a pointer type.  We need this because ASSERT_EQ(NULL, my_ptr)
      // expands to Compare("", "", NULL, my_ptr), which requires a conversion
      // to match the Secret* in the other overload, which would otherwise make
      // this template match better.
      typename EnableIf<!is_pointer<T2>::value>::type* = 0) {
    return CmpHelperEQ(expected_expression, actual_expression, expected,
                       actual);
  }

  // This version will be picked when the second argument to ASSERT_EQ() is a
  // pointer, e.g. ASSERT_EQ(NULL, a_pointer).
  template <typename T>
  static AssertionResult Compare(
      const char* expected_expression,
      const char* actual_expression,
      // We used to have a second template parameter instead of Secret*.  That
      // template parameter would deduce to 'long', making this a better match
      // than the first overload even without the first overload's EnableIf.
      // Unfortunately, gcc with -Wconversion-null warns when "passing NULL to
      // non-pointer argument" (even a deduced integral argument), so the old
      // implementation caused warnings in user code.
      Secret* /* expected (NULL) */,
      T* actual) {
    // We already know that 'expected' is a null pointer.
    return CmpHelperEQ(expected_expression, actual_expression,
                       static_cast<T*>(NULL), actual);
  }
};

// A macro for implementing the helper functions needed to implement
// ASSERT_?? and EXPECT_??.  It is here just to avoid copy-and-paste
// of similar code.
//
// For each templatized helper function, we also define an overloaded
// version for BiggestInt in order to reduce code bloat and allow
// anonymous enums to be used with {ASSERT|EXPECT}_?? when compiled
// with gcc 4.
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
#define GTEST_IMPL_CMP_HELPER_(op_name, op)\
template <typename T1, typename T2>\
AssertionResult CmpHelper##op_name(const char* expr1, const char* expr2, \
                                   const T1& val1, const T2& val2) {\
  if (val1 op val2) {\
    return AssertionSuccess();\
  } else {\
    return AssertionFailure() \
        << "Expected: (" << expr1 << ") " #op " (" << expr2\
        << "), actual: " << FormatForComparisonFailureMessage(val1, val2)\
        << " vs " << FormatForComparisonFailureMessage(val2, val1);\
  }\
}\
GTEST_API_ AssertionResult CmpHelper##op_name(\
    const char* expr1, const char* expr2, BiggestInt val1, BiggestInt val2)

// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.

// Implements the helper function for {ASSERT|EXPECT}_NE
GTEST_IMPL_CMP_HELPER_(NE, !=);
// Implements the helper function for {ASSERT|EXPECT}_LE
GTEST_IMPL_CMP_HELPER_(LE, <=);
// Implements the helper function for {ASSERT|EXPECT}_LT
GTEST_IMPL_CMP_HELPER_(LT, < );
// Implements the helper function for {ASSERT|EXPECT}_GE
GTEST_IMPL_CMP_HELPER_(GE, >=);
// Implements the helper function for {ASSERT|EXPECT}_GT
GTEST_IMPL_CMP_HELPER_(GT, > );

#undef GTEST_IMPL_CMP_HELPER_

// The helper function for {ASSERT|EXPECT}_STREQ.
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
GTEST_API_ AssertionResult CmpHelperSTREQ(const char* expected_expression,
                                          const char* actual_expression,
                                          const char* expected,
                                          const char* actual);

// The helper function for {ASSERT|EXPECT}_STRCASEEQ.
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
GTEST_API_ AssertionResult CmpHelperSTRCASEEQ(const char* expected_expression,
                                              const char* actual_expression,
                                              const char* expected,
                                              const char* actual);

// The helper function for {ASSERT|EXPECT}_STRNE.
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
GTEST_API_ AssertionResult CmpHelperSTRNE(const char* s1_expression,
                                          const char* s2_expression,
                                          const char* s1,
                                          const char* s2);

// The helper function for {ASSERT|EXPECT}_STRCASENE.
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
GTEST_API_ AssertionResult CmpHelperSTRCASENE(const char* s1_expression,
                                              const char* s2_expression,
                                              const char* s1,
                                              const char* s2);


// Helper function for *_STREQ on wide strings.
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
GTEST_API_ AssertionResult CmpHelperSTREQ(const char* expected_expression,
                                          const char* actual_expression,
                                          const wchar_t* expected,
                                          const wchar_t* actual);

// Helper function for *_STRNE on wide strings.
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
GTEST_API_ AssertionResult CmpHelperSTRNE(const char* s1_expression,
                                          const char* s2_expression,
                                          const wchar_t* s1,
                                          const wchar_t* s2);

}  // namespace internal

// IsSubstring() and IsNotSubstring() are intended to be used as the
// first argument to {EXPECT,ASSERT}_PRED_FORMAT2(), not by
// themselves.  They check whether needle is a substring of haystack
// (NULL is considered a substring of itself only), and return an
// appropriate error message when they fail.
//
// The {needle,haystack}_expr arguments are the stringified
// expressions that generated the two real arguments.
GTEST_API_ AssertionResult IsSubstring(
    const char* needle_expr, const char* haystack_expr,
    const char* needle, const char* haystack);
GTEST_API_ AssertionResult IsSubstring(
    const char* needle_expr, const char* haystack_expr,
    const wchar_t* needle, const wchar_t* haystack);
GTEST_API_ AssertionResult IsNotSubstring(
    const char* needle_expr, const char* haystack_expr,
    const char* needle, const char* haystack);
GTEST_API_ AssertionResult IsNotSubstring(
    const char* needle_expr, const char* haystack_expr,
    const wchar_t* needle, const wchar_t* haystack);
GTEST_API_ AssertionResult IsSubstring(
    const char* needle_expr, const char* haystack_expr,
    const ::std::string& needle, const ::std::string& haystack);
GTEST_API_ AssertionResult IsNotSubstring(
    const char* needle_expr, const char* haystack_expr,
    const ::std::string& needle, const ::std::string& haystack);

#if GTEST_HAS_STD_WSTRING
GTEST_API_ AssertionResult IsSubstring(
    const char* needle_expr, const char* haystack_expr,
    const ::std::wstring& needle, const ::std::wstring& haystack);
GTEST_API_ AssertionResult IsNotSubstring(
    const char* needle_expr, const char* haystack_expr,
    const ::std::wstring& needle, const ::std::wstring& haystack);
#endif  // GTEST_HAS_STD_WSTRING

namespace internal {

// Helper template function for comparing floating-points.
//
// Template parameter:
//
//   RawType: the raw floating-point type (either float or double)
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
template <typename RawType>
AssertionResult CmpHelperFloatingPointEQ(const char* expected_expression,
                                         const char* actual_expression,
                                         RawType expected,
                                         RawType actual) {
  const FloatingPoint<RawType> lhs(expected), rhs(actual);

  if (lhs.AlmostEquals(rhs)) {
    return AssertionSuccess();
  }

  ::std::stringstream expected_ss;
  expected_ss << std::setprecision(std::numeric_limits<RawType>::digits10 + 2)
              << expected;

  ::std::stringstream actual_ss;
  actual_ss << std::setprecision(std::numeric_limits<RawType>::digits10 + 2)
            << actual;

  return EqFailure(expected_expression,
                   actual_expression,
                   StringStreamToString(&expected_ss),
                   StringStreamToString(&actual_ss),
                   false);
}

// Helper function for implementing ASSERT_NEAR.
//
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
GTEST_API_ AssertionResult DoubleNearPredFormat(const char* expr1,
                                                const char* expr2,
                                                const char* abs_error_expr,
                                                double val1,
                                                double val2,
                                                double abs_error);

// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
// A class that enables one to stream messages to assertion macros
class GTEST_API_ AssertHelper {
 public:
  // Constructor.
  AssertHelper(TestPartResult::Type type,
               const char* file,
               int line,
               const char* message);
  ~AssertHelper();

  // Message assignment is a semantic trick to enable assertion
  // streaming; see the GTEST_MESSAGE_ macro below.
  void operator=(const Message& message) const;

 private:
  // We put our data in a struct so that the size of the AssertHelper class can
  // be as small as possible.  This is important because gcc is incapable of
  // re-using stack space even for temporary variables, so every EXPECT_EQ
  // reserves stack space for another AssertHelper.
  struct AssertHelperData {
    AssertHelperData(TestPartResult::Type t,
                     const char* srcfile,
                     int line_num,
                     const char* msg)
        : type(t), file(srcfile), line(line_num), message(msg) { }

    TestPartResult::Type const type;
    const char*        const file;
    int                const line;
    String             const message;

   private:
    GTEST_DISALLOW_COPY_AND_ASSIGN_(AssertHelperData);
  };

  AssertHelperData* const data_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(AssertHelper);
};

}  // namespace internal

#if GTEST_HAS_PARAM_TEST
// The pure interface class that all value-parameterized tests inherit from.
// A value-parameterized class must inherit from both ::testing::Test and
// ::testing::WithParamInterface. In most cases that just means inheriting
// from ::testing::TestWithParam, but more complicated test hierarchies
// may need to inherit from Test and WithParamInterface at different levels.
//
// This interface has support for accessing the test parameter value via
// the GetParam() method.
//
// Use it with one of the parameter generator defining functions, like Range(),
// Values(), ValuesIn(), Bool(), and Combine().
//
// class FooTest : public ::testing::TestWithParam<int> {
//  protected:
//   FooTest() {
//     // Can use GetParam() here.
//   }
//   virtual ~FooTest() {
//     // Can use GetParam() here.
//   }
//   virtual void SetUp() {
//     // Can use GetParam() here.
//   }
//   virtual void TearDown {
//     // Can use GetParam() here.
//   }
// };
// TEST_P(FooTest, DoesBar) {
//   // Can use GetParam() method here.
//   Foo foo;
//   ASSERT_TRUE(foo.DoesBar(GetParam()));
// }
// INSTANTIATE_TEST_CASE_P(OneToTenRange, FooTest, ::testing::Range(1, 10));

template <typename T>
class WithParamInterface {
 public:
  typedef T ParamType;
  virtual ~WithParamInterface() {}

  // The current parameter value. Is also available in the test fixture's
  // constructor. This member function is non-static, even though it only
  // references static data, to reduce the opportunity for incorrect uses
  // like writing 'WithParamInterface<bool>::GetParam()' for a test that
  // uses a fixture whose parameter type is int.
  const ParamType& GetParam() const { return *parameter_; }

 private:
  // Sets parameter value. The caller is responsible for making sure the value
  // remains alive and unchanged throughout the current test.
  static void SetParam(const ParamType* parameter) {
    parameter_ = parameter;
  }

  // Static value used for accessing parameter during a test lifetime.
  static const ParamType* parameter_;

  // TestClass must be a subclass of WithParamInterface<T> and Test.
  template <class TestClass> friend class internal::ParameterizedTestFactory;
};

template <typename T>
const T* WithParamInterface<T>::parameter_ = NULL;

// Most value-parameterized classes can ignore the existence of
// WithParamInterface, and can just inherit from ::testing::TestWithParam.

template <typename T>
class TestWithParam : public Test, public WithParamInterface<T> {
};

#endif  // GTEST_HAS_PARAM_TEST

// Macros for indicating success/failure in test code.

// ADD_FAILURE unconditionally adds a failure to the current test.
// SUCCEED generates a success - it doesn't automatically make the
// current test successful, as a test is only successful when it has
// no failure.
//
// EXPECT_* verifies that a certain condition is satisfied.  If not,
// it behaves like ADD_FAILURE.  In particular:
//
//   EXPECT_TRUE  verifies that a Boolean condition is true.
//   EXPECT_FALSE verifies that a Boolean condition is false.
//
// FAIL and ASSERT_* are similar to ADD_FAILURE and EXPECT_*, except
// that they will also abort the current function on failure.  People
// usually want the fail-fast behavior of FAIL and ASSERT_*, but those
// writing data-driven tests often find themselves using ADD_FAILURE
// and EXPECT_* more.
//
// Examples:
//
//   EXPECT_TRUE(server.StatusIsOK());
//   ASSERT_FALSE(server.HasPendingRequest(port))
//       << "There are still pending requests " << "on port " << port;

// Generates a nonfatal failure with a generic message.
#define ADD_FAILURE() GTEST_NONFATAL_FAILURE_("Failed")

// Generates a nonfatal failure at the given source file location with
// a generic message.
#define ADD_FAILURE_AT(file, line) \
  GTEST_MESSAGE_AT_(file, line, "Failed", \
                    ::testing::TestPartResult::kNonFatalFailure)

// Generates a fatal failure with a generic message.
#define GTEST_FAIL() GTEST_FATAL_FAILURE_("Failed")

// Define this macro to 1 to omit the definition of FAIL(), which is a
// generic name and clashes with some other libraries.
#if !GTEST_DONT_DEFINE_FAIL
# define FAIL() GTEST_FAIL()
#endif

// Generates a success with a generic message.
#define GTEST_SUCCEED() GTEST_SUCCESS_("Succeeded")

// Define this macro to 1 to omit the definition of SUCCEED(), which
// is a generic name and clashes with some other libraries.
#if !GTEST_DONT_DEFINE_SUCCEED
# define SUCCEED() GTEST_SUCCEED()
#endif

// Macros for testing exceptions.
//
//    * {ASSERT|EXPECT}_THROW(statement, expected_exception):
//         Tests that the statement throws the expected exception.
//    * {ASSERT|EXPECT}_NO_THROW(statement):
//         Tests that the statement doesn't throw any exception.
//    * {ASSERT|EXPECT}_ANY_THROW(statement):
//         Tests that the statement throws an exception.

#define EXPECT_THROW(statement, expected_exception) \
  GTEST_TEST_THROW_(statement, expected_exception, GTEST_NONFATAL_FAILURE_)
#define EXPECT_NO_THROW(statement) \
  GTEST_TEST_NO_THROW_(statement, GTEST_NONFATAL_FAILURE_)
#define EXPECT_ANY_THROW(statement) \
  GTEST_TEST_ANY_THROW_(statement, GTEST_NONFATAL_FAILURE_)
#define ASSERT_THROW(statement, expected_exception) \
  GTEST_TEST_THROW_(statement, expected_exception, GTEST_FATAL_FAILURE_)
#define ASSERT_NO_THROW(statement) \
  GTEST_TEST_NO_THROW_(statement, GTEST_FATAL_FAILURE_)
#define ASSERT_ANY_THROW(statement) \
  GTEST_TEST_ANY_THROW_(statement, GTEST_FATAL_FAILURE_)

// Boolean assertions. Condition can be either a Boolean expression or an
// AssertionResult. For more information on how to use AssertionResult with
// these macros see comments on that class.
#define EXPECT_TRUE(condition) \
  GTEST_TEST_BOOLEAN_(condition, #condition, false, true, \
                      GTEST_NONFATAL_FAILURE_)
#define EXPECT_FALSE(condition) \
  GTEST_TEST_BOOLEAN_(!(condition), #condition, true, false, \
                      GTEST_NONFATAL_FAILURE_)
#define ASSERT_TRUE(condition) \
  GTEST_TEST_BOOLEAN_(condition, #condition, false, true, \
                      GTEST_FATAL_FAILURE_)
#define ASSERT_FALSE(condition) \
  GTEST_TEST_BOOLEAN_(!(condition), #condition, true, false, \
                      GTEST_FATAL_FAILURE_)

// Includes the auto-generated header that implements a family of
// generic predicate assertion macros.
#include "gtest/gtest_pred_impl.h"

// Macros for testing equalities and inequalities.
//
//    * {ASSERT|EXPECT}_EQ(expected, actual): Tests that expected == actual
//    * {ASSERT|EXPECT}_NE(v1, v2):           Tests that v1 != v2
//    * {ASSERT|EXPECT}_LT(v1, v2):           Tests that v1 < v2
//    * {ASSERT|EXPECT}_LE(v1, v2):           Tests that v1 <= v2
//    * {ASSERT|EXPECT}_GT(v1, v2):           Tests that v1 > v2
//    * {ASSERT|EXPECT}_GE(v1, v2):           Tests that v1 >= v2
//
// When they are not, Google Test prints both the tested expressions and
// their actual values.  The values must be compatible built-in types,
// or you will get a compiler error.  By "compatible" we mean that the
// values can be compared by the respective operator.
//
// Note:
//
//   1. It is possible to make a user-defined type work with
//   {ASSERT|EXPECT}_??(), but that requires overloading the
//   comparison operators and is thus discouraged by the Google C++
//   Usage Guide.  Therefore, you are advised to use the
//   {ASSERT|EXPECT}_TRUE() macro to assert that two objects are
//   equal.
//
//   2. The {ASSERT|EXPECT}_??() macros do pointer comparisons on
//   pointers (in particular, C strings).  Therefore, if you use it
//   with two C strings, you are testing how their locations in memory
//   are related, not how their content is related.  To compare two C
//   strings by content, use {ASSERT|EXPECT}_STR*().
//
//   3. {ASSERT|EXPECT}_EQ(expected, actual) is preferred to
//   {ASSERT|EXPECT}_TRUE(expected == actual), as the former tells you
//   what the actual value is when it fails, and similarly for the
//   other comparisons.
//
//   4. Do not depend on the order in which {ASSERT|EXPECT}_??()
//   evaluate their arguments, which is undefined.
//
//   5. These macros evaluate their arguments exactly once.
//
// Examples:
//
//   EXPECT_NE(5, Foo());
//   EXPECT_EQ(NULL, a_pointer);
//   ASSERT_LT(i, array_size);
//   ASSERT_GT(records.size(), 0) << "There is no record left.";

#define EXPECT_EQ(expected, actual) \
  EXPECT_PRED_FORMAT2(::testing::internal:: \
                      EqHelper<GTEST_IS_NULL_LITERAL_(expected)>::Compare, \
                      expected, actual)
#define EXPECT_NE(expected, actual) \
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperNE, expected, actual)
#define EXPECT_LE(val1, val2) \
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperLE, val1, val2)
#define EXPECT_LT(val1, val2) \
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperLT, val1, val2)
#define EXPECT_GE(val1, val2) \
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperGE, val1, val2)
#define EXPECT_GT(val1, val2) \
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperGT, val1, val2)

#define GTEST_ASSERT_EQ(expected, actual) \
  ASSERT_PRED_FORMAT2(::testing::internal:: \
                      EqHelper<GTEST_IS_NULL_LITERAL_(expected)>::Compare, \
                      expected, actual)
#define GTEST_ASSERT_NE(val1, val2) \
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperNE, val1, val2)
#define GTEST_ASSERT_LE(val1, val2) \
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperLE, val1, val2)
#define GTEST_ASSERT_LT(val1, val2) \
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperLT, val1, val2)
#define GTEST_ASSERT_GE(val1, val2) \
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperGE, val1, val2)
#define GTEST_ASSERT_GT(val1, val2) \
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperGT, val1, val2)

// Define macro GTEST_DONT_DEFINE_ASSERT_XY to 1 to omit the definition of
// ASSERT_XY(), which clashes with some users' own code.

#if !GTEST_DONT_DEFINE_ASSERT_EQ
# define ASSERT_EQ(val1, val2) GTEST_ASSERT_EQ(val1, val2)
#endif

#if !GTEST_DONT_DEFINE_ASSERT_NE
# define ASSERT_NE(val1, val2) GTEST_ASSERT_NE(val1, val2)
#endif

#if !GTEST_DONT_DEFINE_ASSERT_LE
# define ASSERT_LE(val1, val2) GTEST_ASSERT_LE(val1, val2)
#endif

#if !GTEST_DONT_DEFINE_ASSERT_LT
# define ASSERT_LT(val1, val2) GTEST_ASSERT_LT(val1, val2)
#endif

#if !GTEST_DONT_DEFINE_ASSERT_GE
# define ASSERT_GE(val1, val2) GTEST_ASSERT_GE(val1, val2)
#endif

#if !GTEST_DONT_DEFINE_ASSERT_GT
# define ASSERT_GT(val1, val2) GTEST_ASSERT_GT(val1, val2)
#endif

// C String Comparisons.  All tests treat NULL and any non-NULL string
// as different.  Two NULLs are equal.
//
//    * {ASSERT|EXPECT}_STREQ(s1, s2):     Tests that s1 == s2
//    * {ASSERT|EXPECT}_STRNE(s1, s2):     Tests that s1 != s2
//    * {ASSERT|EXPECT}_STRCASEEQ(s1, s2): Tests that s1 == s2, ignoring case
//    * {ASSERT|EXPECT}_STRCASENE(s1, s2): Tests that s1 != s2, ignoring case
//
// For wide or narrow string objects, you can use the
// {ASSERT|EXPECT}_??() macros.
//
// Don't depend on the order in which the arguments are evaluated,
// which is undefined.
//
// These macros evaluate their arguments exactly once.

#define EXPECT_STREQ(expected, actual) \
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTREQ, expected, actual)
#define EXPECT_STRNE(s1, s2) \
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRNE, s1, s2)
#define EXPECT_STRCASEEQ(expected, actual) \
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASEEQ, expected, actual)
#define EXPECT_STRCASENE(s1, s2)\
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASENE, s1, s2)

#define ASSERT_STREQ(expected, actual) \
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTREQ, expected, actual)
#define ASSERT_STRNE(s1, s2) \
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRNE, s1, s2)
#define ASSERT_STRCASEEQ(expected, actual) \
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASEEQ, expected, actual)
#define ASSERT_STRCASENE(s1, s2)\
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASENE, s1, s2)

// Macros for comparing floating-point numbers.
//
//    * {ASSERT|EXPECT}_FLOAT_EQ(expected, actual):
//         Tests that two float values are almost equal.
//    * {ASSERT|EXPECT}_DOUBLE_EQ(expected, actual):
//         Tests that two double values are almost equal.
//    * {ASSERT|EXPECT}_NEAR(v1, v2, abs_error):
//         Tests that v1 and v2 are within the given distance to each other.
//
// Google Test uses ULP-based comparison to automatically pick a default
// error bound that is appropriate for the operands.  See the
// FloatingPoint template class in gtest-internal.h if you are
// interested in the implementation details.

#define EXPECT_FLOAT_EQ(expected, actual)\
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<float>, \
                      expected, actual)

#define EXPECT_DOUBLE_EQ(expected, actual)\
  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<double>, \
                      expected, actual)

#define ASSERT_FLOAT_EQ(expected, actual)\
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<float>, \
                      expected, actual)

#define ASSERT_DOUBLE_EQ(expected, actual)\
  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<double>, \
                      expected, actual)

#define EXPECT_NEAR(val1, val2, abs_error)\
  EXPECT_PRED_FORMAT3(::testing::internal::DoubleNearPredFormat, \
                      val1, val2, abs_error)

#define ASSERT_NEAR(val1, val2, abs_error)\
  ASSERT_PRED_FORMAT3(::testing::internal::DoubleNearPredFormat, \
                      val1, val2, abs_error)

// These predicate format functions work on floating-point values, and
// can be used in {ASSERT|EXPECT}_PRED_FORMAT2*(), e.g.
//
//   EXPECT_PRED_FORMAT2(testing::DoubleLE, Foo(), 5.0);

// Asserts that val1 is less than, or almost equal to, val2.  Fails
// otherwise.  In particular, it fails if either val1 or val2 is NaN.
GTEST_API_ AssertionResult FloatLE(const char* expr1, const char* expr2,
                                   float val1, float val2);
GTEST_API_ AssertionResult DoubleLE(const char* expr1, const char* expr2,
                                    double val1, double val2);


#if GTEST_OS_WINDOWS

// Macros that test for HRESULT failure and success, these are only useful
// on Windows, and rely on Windows SDK macros and APIs to compile.
//
//    * {ASSERT|EXPECT}_HRESULT_{SUCCEEDED|FAILED}(expr)
//
// When expr unexpectedly fails or succeeds, Google Test prints the
// expected result and the actual result with both a human-readable
// string representation of the error, if available, as well as the
// hex result code.
# define EXPECT_HRESULT_SUCCEEDED(expr) \
    EXPECT_PRED_FORMAT1(::testing::internal::IsHRESULTSuccess, (expr))

# define ASSERT_HRESULT_SUCCEEDED(expr) \
    ASSERT_PRED_FORMAT1(::testing::internal::IsHRESULTSuccess, (expr))

# define EXPECT_HRESULT_FAILED(expr) \
    EXPECT_PRED_FORMAT1(::testing::internal::IsHRESULTFailure, (expr))

# define ASSERT_HRESULT_FAILED(expr) \
    ASSERT_PRED_FORMAT1(::testing::internal::IsHRESULTFailure, (expr))

#endif  // GTEST_OS_WINDOWS

// Macros that execute statement and check that it doesn't generate new fatal
// failures in the current thread.
//
//   * {ASSERT|EXPECT}_NO_FATAL_FAILURE(statement);
//
// Examples:
//
//   EXPECT_NO_FATAL_FAILURE(Process());
//   ASSERT_NO_FATAL_FAILURE(Process()) << "Process() failed";
//
#define ASSERT_NO_FATAL_FAILURE(statement) \
    GTEST_TEST_NO_FATAL_FAILURE_(statement, GTEST_FATAL_FAILURE_)
#define EXPECT_NO_FATAL_FAILURE(statement) \
    GTEST_TEST_NO_FATAL_FAILURE_(statement, GTEST_NONFATAL_FAILURE_)

// Causes a trace (including the source file path, the current line
// number, and the given message) to be included in every test failure
// message generated by code in the current scope.  The effect is
// undone when the control leaves the current scope.
//
// The message argument can be anything streamable to std::ostream.
//
// In the implementation, we include the current line number as part
// of the dummy variable name, thus allowing multiple SCOPED_TRACE()s
// to appear in the same block - as long as they are on different
// lines.
#define SCOPED_TRACE(message) \
  ::testing::internal::ScopedTrace GTEST_CONCAT_TOKEN_(gtest_trace_, __LINE__)(\
    __FILE__, __LINE__, ::testing::Message() << (message))

// Compile-time assertion for type equality.
// StaticAssertTypeEq<type1, type2>() compiles iff type1 and type2 are
// the same type.  The value it returns is not interesting.
//
// Instead of making StaticAssertTypeEq a class template, we make it a
// function template that invokes a helper class template.  This
// prevents a user from misusing StaticAssertTypeEq<T1, T2> by
// defining objects of that type.
//
// CAVEAT:
//
// When used inside a method of a class template,
// StaticAssertTypeEq<T1, T2>() is effective ONLY IF the method is
// instantiated.  For example, given:
//
//   template <typename T> class Foo {
//    public:
//     void Bar() { testing::StaticAssertTypeEq<int, T>(); }
//   };
//
// the code:
//
//   void Test1() { Foo<bool> foo; }
//
// will NOT generate a compiler error, as Foo<bool>::Bar() is never
// actually instantiated.  Instead, you need:
//
//   void Test2() { Foo<bool> foo; foo.Bar(); }
//
// to cause a compiler error.
template <typename T1, typename T2>
bool StaticAssertTypeEq() {
  (void)internal::StaticAssertTypeEqHelper<T1, T2>();
  return true;
}

// Defines a test.
//
// The first parameter is the name of the test case, and the second
// parameter is the name of the test within the test case.
//
// The convention is to end the test case name with "Test".  For
// example, a test case for the Foo class can be named FooTest.
//
// The user should put his test code between braces after using this
// macro.  Example:
//
//   TEST(FooTest, InitializesCorrectly) {
//     Foo foo;
//     EXPECT_TRUE(foo.StatusIsOK());
//   }

// Note that we call GetTestTypeId() instead of GetTypeId<
// ::testing::Test>() here to get the type ID of testing::Test.  This
// is to work around a suspected linker bug when using Google Test as
// a framework on Mac OS X.  The bug causes GetTypeId<
// ::testing::Test>() to return different values depending on whether
// the call is from the Google Test framework itself or from user test
// code.  GetTestTypeId() is guaranteed to always return the same
// value, as it always calls GetTypeId<>() from the Google Test
// framework.
#define GTEST_TEST(test_case_name, test_name)\
  GTEST_TEST_(test_case_name, test_name, \
              ::testing::Test, ::testing::internal::GetTestTypeId())

// Define this macro to 1 to omit the definition of TEST(), which
// is a generic name and clashes with some other libraries.
#if !GTEST_DONT_DEFINE_TEST
# define TEST(test_case_name, test_name) GTEST_TEST(test_case_name, test_name)
#endif

// Defines a test that uses a test fixture.
//
// The first parameter is the name of the test fixture class, which
// also doubles as the test case name.  The second parameter is the
// name of the test within the test case.
//
// A test fixture class must be declared earlier.  The user should put
// his test code between braces after using this macro.  Example:
//
//   class FooTest : public testing::Test {
//    protected:
//     virtual void SetUp() { b_.AddElement(3); }
//
//     Foo a_;
//     Foo b_;
//   };
//
//   TEST_F(FooTest, InitializesCorrectly) {
//     EXPECT_TRUE(a_.StatusIsOK());
//   }
//
//   TEST_F(FooTest, ReturnsElementCountCorrectly) {
//     EXPECT_EQ(0, a_.size());
//     EXPECT_EQ(1, b_.size());
//   }

#define TEST_F(test_fixture, test_name)\
  GTEST_TEST_(test_fixture, test_name, test_fixture, \
              ::testing::internal::GetTypeId<test_fixture>())

// Use this macro in main() to run all tests.  It returns 0 if all
// tests are successful, or 1 otherwise.
//
// RUN_ALL_TESTS() should be invoked after the command line has been
// parsed by InitGoogleTest().

#define RUN_ALL_TESTS()\
  (::testing::UnitTest::GetInstance()->Run())

}  // namespace testing

#endif  // GTEST_INCLUDE_GTEST_GTEST_H_