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R9484/test/gtest_environment_test.cc
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gtest_environment_test.cc
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// 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>
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);
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;
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;
}
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