#!/bin/bash

#  Copyright 2011 Google Inc. All Rights Reserved.
#
#  Licensed 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
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
#
#  Author: Nikki VonHollen <vonhollen@gmail.com>


# Figure out where everything is

MOCKLIBC="@top_builddir@/bin/mocklibc"
ETCDIR="@top_srcdir@/example"


# Setup the mock environment

export MOCK_PASSWD="${ETCDIR}/passwd"
export MOCK_GROUP="${ETCDIR}/group"
export MOCK_NETGROUP="${ETCDIR}/netgroup"


# Test helper definitions

TESTCOUNT=0
FAILCOUNT=0

fail () {
  echo "Test Failed:"
  echo $@ >&2
  echo
  FAILCOUNT=$((FAILCOUNT+1))
}

finish () {
  if [[ $FAILCOUNT -gt 0 ]]
  then
    echo "Failed $FAILCOUNT of $TESTCOUNT tests."
    exit 1
  else
    echo "Passed $TESTCOUNT tests."
    exit 0
  fi
}

assert_true () {
  $MOCKLIBC $@ || fail "assert true: $@"
  TESTCOUNT=$((TESTCOUNT+1))
}

assert_false () {
  $MOCKLIBC $@ && fail "assert false: $@"
  TESTCOUNT=$((TESTCOUNT+1))
}

assert_grep () {
  $MOCKLIBC ${@:2} | grep -q "^${1}\$" || fail "'$1' doesn't match output of: ${@:2}"
  TESTCOUNT=$((TESTCOUNT+1))
}


# Test implementations

test_passwd () {
  # Test user ids
  assert_grep "0" id -u root
  assert_grep "500" id -u john
  assert_grep "501" id -u jane

  # Test primary groups
  assert_grep "root" id -gn root
  assert_grep "john" id -gn john
  assert_grep "jane" id -gn jane
}

test_group () {
  # Test group lists for users
  assert_grep "root" id -Gn root
  assert_grep "john users" id -Gn john
  assert_grep "jane users" id -Gn jane
}

test_netgroup () {
  # Test whether each user is each netgroup
  assert_true innetgr foo -u john
  assert_false innetgr foo -u jane

  assert_true innetgr bar -u jane
  assert_false innetgr bar -u john

  assert_true innetgr baz -u john
  assert_true innetgr baz -u jane
  assert_false innetgr baz -u henry

  assert_true innetgr all -u john
  assert_true innetgr all -u jane
  assert_true innetgr all -u henry

  assert_false innetgr none -u john
  assert_false innetgr none -u jane
  assert_false innetgr none -u henry

  assert_false innetgr fake -u john
}


# Run the tests and print a report

if (which id >/dev/null 2>&1)
then
  test_passwd
  test_group
else
  echo "No 'id' command found, skipping passwd and group tests." >&2
fi

if (which innetgr >/dev/null 2>&1)
then
  test_netgroup
else
  echo "No 'innetgr' command found, skipping netgroup tests." >&2
fi


finish