summaryrefslogtreecommitdiffstats
blob: 3cff19e70edcca0d262145ede5810ae9a07437a9 (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
// Copyright 2007, 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)
//
// Tests using global test environments.

#include <stdlib.h>
#include <stdio.h>
#include "gtest/gtest.h"

#define GTEST_IMPLEMENTATION_ 1  // Required for the next #include.
#include "src/gtest-internal-inl.h"
#undef GTEST_IMPLEMENTATION_

namespace testing {
GTEST_DECLARE_string_(filter);
}

namespace {

enum FailureType {
  NO_FAILURE, NON_FATAL_FAILURE, FATAL_FAILURE
};

// For testing using global test environments.
class MyEnvironment : public testing::Environment {
 public:
  MyEnvironment() { Reset(); }

  // Depending on the value of failure_in_set_up_, SetUp() will
  // generate a non-fatal failure, generate a fatal failure, or
  // succeed.
  virtual void SetUp() {
    set_up_was_run_ = true;

    switch (failure_in_set_up_) {
      case NON_FATAL_FAILURE:
        ADD_FAILURE() << "Expected non-fatal failure in global set-up.";
        break;
      case FATAL_FAILURE:
        FAIL() << "Expected fatal failure in global set-up.";
        break;
      default:
        break;
    }
  }

  // Generates a non-fatal failure.
  virtual void TearDown() {
    tear_down_was_run_ = true;
    ADD_FAILURE() << "Expected non-fatal failure in global tear-down.";
  }

  // Resets the state of the environment s.t. it can be reused.
  void Reset() {
    failure_in_set_up_ = NO_FAILURE;
    set_up_was_run_ = false;
    tear_down_was_run_ = false;
  }

  // We call this function to set the type of failure SetUp() should
  // generate.
  void set_failure_in_set_up(FailureType type) {
    failure_in_set_up_ = type;
  }

  // Was SetUp() run?
  bool set_up_was_run() const { return set_up_was_run_; }

  // Was TearDown() run?
  bool tear_down_was_run() const { return tear_down_was_run_; }

 private:
  FailureType failure_in_set_up_;
  bool set_up_was_run_;
  bool tear_down_was_run_;
};

// Was the TEST run?
bool test_was_run;

// The sole purpose of this TEST is to enable us to check whether it
// was run.
TEST(FooTest, Bar) {
  test_was_run = true;
}

// Prints the message and aborts the program if condition is false.
void Check(bool condition, const char* msg) {
  if (!condition) {
    printf("FAILED: %s\n", msg);
    testing::internal::posix::Abort();
  }
}

// Runs the tests.  Return true iff successful.
//
// The 'failure' parameter specifies the type of failure that should
// be generated by the global set-up.
int RunAllTests(MyEnvironment* env, FailureType failure) {
  env->Reset();
  env->set_failure_in_set_up(failure);
  test_was_run = false;
  testing::internal::GetUnitTestImpl()->ClearAdHocTestResult();
  return RUN_ALL_TESTS();
}

}  // namespace

int main(int argc, char **argv) {
  testing::InitGoogleTest(&argc, argv);

  // Registers a global test environment, and verifies that the
  // registration function returns its argument.
  MyEnvironment* const env = new MyEnvironment;
  Check(testing::AddGlobalTestEnvironment(env) == env,
        "AddGlobalTestEnvironment() should return its argument.");

  // Verifies that RUN_ALL_TESTS() runs the tests when the global
  // set-up is successful.
  Check(RunAllTests(env, NO_FAILURE) != 0,
        "RUN_ALL_TESTS() should return non-zero, as the global tear-down "
        "should generate a failure.");
  Check(test_was_run,
        "The tests should run, as the global set-up should generate no "
        "failure");
  Check(env->tear_down_was_run(),
        "The global tear-down should run, as the global set-up was run.");

  // Verifies that RUN_ALL_TESTS() runs the tests when the global
  // set-up generates no fatal failure.
  Check(RunAllTests(env, NON_FATAL_FAILURE) != 0,
        "RUN_ALL_TESTS() should return non-zero, as both the global set-up "
        "and the global tear-down should generate a non-fatal failure.");
  Check(test_was_run,
        "The tests should run, as the global set-up should generate no "
        "fatal failure.");
  Check(env->tear_down_was_run(),
        "The global tear-down should run, as the global set-up was run.");

  // Verifies that RUN_ALL_TESTS() runs no test when the global set-up
  // generates a fatal failure.
  Check(RunAllTests(env, FATAL_FAILURE) != 0,
        "RUN_ALL_TESTS() should return non-zero, as the global set-up "
        "should generate a fatal failure.");
  Check(!test_was_run,
        "The tests should not run, as the global set-up should generate "
        "a fatal failure.");
  Check(env->tear_down_was_run(),
        "The global tear-down should run, as the global set-up was run.");

  // Verifies that RUN_ALL_TESTS() doesn't do global set-up or
  // tear-down when there is no test to run.
  testing::GTEST_FLAG(filter) = "-*";
  Check(RunAllTests(env, NO_FAILURE) == 0,
        "RUN_ALL_TESTS() should return zero, as there is no test to run.");
  Check(!env->set_up_was_run(),
        "The global set-up should not run, as there is no test to run.");
  Check(!env->tear_down_was_run(),
        "The global tear-down should not run, "
        "as the global set-up was not run.");

  printf("PASS\n");
  return 0;
}