gtest_environment_test.cc (6478B)
1 // Copyright 2007, Google Inc. 2 // All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions are 6 // met: 7 // 8 // * Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // * Redistributions in binary form must reproduce the above 11 // copyright notice, this list of conditions and the following disclaimer 12 // in the documentation and/or other materials provided with the 13 // distribution. 14 // * Neither the name of Google Inc. nor the names of its 15 // contributors may be used to endorse or promote products derived from 16 // this software without specific prior written permission. 17 // 18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 30 // 31 // Tests using global test environments. 32 33 #include <stdlib.h> 34 #include <stdio.h> 35 #include "gtest/gtest.h" 36 #include "src/gtest-internal-inl.h" 37 38 namespace testing { 39 GTEST_DECLARE_string_(filter); 40 } 41 42 namespace { 43 44 enum FailureType { 45 NO_FAILURE, NON_FATAL_FAILURE, FATAL_FAILURE 46 }; 47 48 // For testing using global test environments. 49 class MyEnvironment : public testing::Environment { 50 public: 51 MyEnvironment() { Reset(); } 52 53 // Depending on the value of failure_in_set_up_, SetUp() will 54 // generate a non-fatal failure, generate a fatal failure, or 55 // succeed. 56 void SetUp() override { 57 set_up_was_run_ = true; 58 59 switch (failure_in_set_up_) { 60 case NON_FATAL_FAILURE: 61 ADD_FAILURE() << "Expected non-fatal failure in global set-up."; 62 break; 63 case FATAL_FAILURE: 64 FAIL() << "Expected fatal failure in global set-up."; 65 break; 66 default: 67 break; 68 } 69 } 70 71 // Generates a non-fatal failure. 72 void TearDown() override { 73 tear_down_was_run_ = true; 74 ADD_FAILURE() << "Expected non-fatal failure in global tear-down."; 75 } 76 77 // Resets the state of the environment s.t. it can be reused. 78 void Reset() { 79 failure_in_set_up_ = NO_FAILURE; 80 set_up_was_run_ = false; 81 tear_down_was_run_ = false; 82 } 83 84 // We call this function to set the type of failure SetUp() should 85 // generate. 86 void set_failure_in_set_up(FailureType type) { 87 failure_in_set_up_ = type; 88 } 89 90 // Was SetUp() run? 91 bool set_up_was_run() const { return set_up_was_run_; } 92 93 // Was TearDown() run? 94 bool tear_down_was_run() const { return tear_down_was_run_; } 95 96 private: 97 FailureType failure_in_set_up_; 98 bool set_up_was_run_; 99 bool tear_down_was_run_; 100 }; 101 102 // Was the TEST run? 103 bool test_was_run; 104 105 // The sole purpose of this TEST is to enable us to check whether it 106 // was run. 107 TEST(FooTest, Bar) { 108 test_was_run = true; 109 } 110 111 // Prints the message and aborts the program if condition is false. 112 void Check(bool condition, const char* msg) { 113 if (!condition) { 114 printf("FAILED: %s\n", msg); 115 testing::internal::posix::Abort(); 116 } 117 } 118 119 // Runs the tests. Return true if and only if successful. 120 // 121 // The 'failure' parameter specifies the type of failure that should 122 // be generated by the global set-up. 123 int RunAllTests(MyEnvironment* env, FailureType failure) { 124 env->Reset(); 125 env->set_failure_in_set_up(failure); 126 test_was_run = false; 127 testing::internal::GetUnitTestImpl()->ClearAdHocTestResult(); 128 return RUN_ALL_TESTS(); 129 } 130 131 } // namespace 132 133 int main(int argc, char **argv) { 134 testing::InitGoogleTest(&argc, argv); 135 136 // Registers a global test environment, and verifies that the 137 // registration function returns its argument. 138 MyEnvironment* const env = new MyEnvironment; 139 Check(testing::AddGlobalTestEnvironment(env) == env, 140 "AddGlobalTestEnvironment() should return its argument."); 141 142 // Verifies that RUN_ALL_TESTS() runs the tests when the global 143 // set-up is successful. 144 Check(RunAllTests(env, NO_FAILURE) != 0, 145 "RUN_ALL_TESTS() should return non-zero, as the global tear-down " 146 "should generate a failure."); 147 Check(test_was_run, 148 "The tests should run, as the global set-up should generate no " 149 "failure"); 150 Check(env->tear_down_was_run(), 151 "The global tear-down should run, as the global set-up was run."); 152 153 // Verifies that RUN_ALL_TESTS() runs the tests when the global 154 // set-up generates no fatal failure. 155 Check(RunAllTests(env, NON_FATAL_FAILURE) != 0, 156 "RUN_ALL_TESTS() should return non-zero, as both the global set-up " 157 "and the global tear-down should generate a non-fatal failure."); 158 Check(test_was_run, 159 "The tests should run, as the global set-up should generate no " 160 "fatal failure."); 161 Check(env->tear_down_was_run(), 162 "The global tear-down should run, as the global set-up was run."); 163 164 // Verifies that RUN_ALL_TESTS() runs no test when the global set-up 165 // generates a fatal failure. 166 Check(RunAllTests(env, FATAL_FAILURE) != 0, 167 "RUN_ALL_TESTS() should return non-zero, as the global set-up " 168 "should generate a fatal failure."); 169 Check(!test_was_run, 170 "The tests should not run, as the global set-up should generate " 171 "a fatal failure."); 172 Check(env->tear_down_was_run(), 173 "The global tear-down should run, as the global set-up was run."); 174 175 // Verifies that RUN_ALL_TESTS() doesn't do global set-up or 176 // tear-down when there is no test to run. 177 testing::GTEST_FLAG(filter) = "-*"; 178 Check(RunAllTests(env, NO_FAILURE) == 0, 179 "RUN_ALL_TESTS() should return zero, as there is no test to run."); 180 Check(!env->set_up_was_run(), 181 "The global set-up should not run, as there is no test to run."); 182 Check(!env->tear_down_was_run(), 183 "The global tear-down should not run, " 184 "as the global set-up was not run."); 185 186 printf("PASS\n"); 187 return 0; 188 }