summaryrefslogtreecommitdiff
path: root/tools/qa/cppunit/test_bigint.cxx
blob: 87ebed67bd1db14fdec25888a29c5d3e5da1569b (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
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#include <limits>
#include <cppunit/TestFixture.h>
#include <cppunit/extensions/HelperMacros.h>

#include <rtl/math.hxx>

#include <tools/bigint.hxx>

namespace tools
{

class BigIntTest : public CppUnit::TestFixture
{
public:
#if SAL_TYPES_SIZEOFLONG < SAL_TYPES_SIZEOFLONGLONG
    void testConstructionFromLongLong();
#endif

    CPPUNIT_TEST_SUITE(BigIntTest);
#if SAL_TYPES_SIZEOFLONG < SAL_TYPES_SIZEOFLONGLONG
    CPPUNIT_TEST(testConstructionFromLongLong);
#endif
    CPPUNIT_TEST_SUITE_END();
};

#if SAL_TYPES_SIZEOFLONG < SAL_TYPES_SIZEOFLONGLONG
void BigIntTest::testConstructionFromLongLong()
{
    // small positive number
    {
        BigInt bi(static_cast<sal_Int64>(42));
        CPPUNIT_ASSERT(bi.IsSet());
        CPPUNIT_ASSERT(!bi.IsZero());
        CPPUNIT_ASSERT(!bi.IsNeg());
        CPPUNIT_ASSERT(bi.IsLong());
        CPPUNIT_ASSERT_EQUAL(42L, static_cast<long>(bi));
    }

    // small negative number
    {
        BigInt bi(static_cast<sal_Int64>(-42));
        CPPUNIT_ASSERT(bi.IsSet());
        CPPUNIT_ASSERT(!bi.IsZero());
        CPPUNIT_ASSERT(bi.IsNeg());
        CPPUNIT_ASSERT(bi.IsLong());
        CPPUNIT_ASSERT_EQUAL(-42L, static_cast<long>(bi));
    }

    // positive number just fitting to long
    {
        BigInt bi(static_cast<sal_Int64>(std::numeric_limits<long>::max()));
        CPPUNIT_ASSERT(bi.IsSet());
        CPPUNIT_ASSERT(!bi.IsZero());
        CPPUNIT_ASSERT(!bi.IsNeg());
        CPPUNIT_ASSERT(bi.IsLong());
        CPPUNIT_ASSERT_EQUAL(std::numeric_limits<long>::max(), static_cast<long>(bi));
    }

    // negative number just fitting to long
    {
        BigInt bi(static_cast<sal_Int64>(std::numeric_limits<long>::min()));
        CPPUNIT_ASSERT(bi.IsSet());
        CPPUNIT_ASSERT(!bi.IsZero());
        CPPUNIT_ASSERT(bi.IsNeg());
        CPPUNIT_ASSERT(bi.IsLong());
        CPPUNIT_ASSERT_EQUAL(std::numeric_limits<long>::min(), static_cast<long>(bi));
    }

    // positive number not fitting to long
    {
        BigInt bi(static_cast<sal_Int64>(std::numeric_limits<long>::max()) + static_cast<sal_Int64>(1));
        CPPUNIT_ASSERT(bi.IsSet());
        CPPUNIT_ASSERT(!bi.IsZero());
        CPPUNIT_ASSERT(!bi.IsNeg());
        CPPUNIT_ASSERT(!bi.IsLong());
    }

    // negative number not fitting to long
    {
        BigInt bi(static_cast<sal_Int64>(std::numeric_limits<long>::min()) - static_cast<sal_Int64>(1));
        CPPUNIT_ASSERT(bi.IsSet());
        CPPUNIT_ASSERT(!bi.IsZero());
        CPPUNIT_ASSERT(bi.IsNeg());
        CPPUNIT_ASSERT(!bi.IsLong());
    }
}
#endif

CPPUNIT_TEST_SUITE_REGISTRATION(BigIntTest);

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */