Initial import.
This commit is contained in:
shiqian
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test/gtest-death-test_test.cc
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862
test/gtest-death-test_test.cc
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// Copyright 2005, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Author: wan@google.com (Zhanyong Wan)
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//
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// Tests for death tests.
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#include <gtest/gtest-death-test.h>
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#include <gtest/gtest.h>
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#ifdef GTEST_HAS_DEATH_TEST
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#include <gtest/gtest-spi.h>
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// Indicates that this translation unit is part of Google Test's
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// implementation. It must come before gtest-internal-inl.h is
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// included, or there will be a compiler error. This trick is to
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// prevent a user from accidentally including gtest-internal-inl.h in
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// his code.
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#define GTEST_IMPLEMENTATION
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#include "src/gtest-internal-inl.h"
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#undef GTEST_IMPLEMENTATION
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using testing::internal::DeathTest;
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using testing::internal::DeathTestFactory;
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namespace testing {
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namespace internal {
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// A helper class whose objects replace the death test factory for a
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// single UnitTest object during their lifetimes.
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class ReplaceDeathTestFactory {
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public:
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ReplaceDeathTestFactory(UnitTest* parent, DeathTestFactory* new_factory)
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: parent_impl_(parent->impl()) {
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old_factory_ = parent_impl_->death_test_factory_.release();
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parent_impl_->death_test_factory_.reset(new_factory);
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}
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~ReplaceDeathTestFactory() {
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parent_impl_->death_test_factory_.release();
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parent_impl_->death_test_factory_.reset(old_factory_);
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}
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private:
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// Prevents copying ReplaceDeathTestFactory objects.
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ReplaceDeathTestFactory(const ReplaceDeathTestFactory&);
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void operator=(const ReplaceDeathTestFactory&);
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UnitTestImpl* parent_impl_;
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DeathTestFactory* old_factory_;
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};
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} // namespace internal
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} // namespace testing
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// Tests that death tests work.
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class TestForDeathTest : public testing::Test {
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protected:
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// A static member function that's expected to die.
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static void StaticMemberFunction() {
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GTEST_LOG(FATAL, "death inside StaticMemberFunction().");
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}
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// A method of the test fixture that may die.
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void MemberFunction() {
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if (should_die_) {
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GTEST_LOG(FATAL, "death inside MemberFunction().");
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}
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}
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// True iff MemberFunction() should die.
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bool should_die_;
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};
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// A class with a member function that may die.
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class MayDie {
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public:
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explicit MayDie(bool should_die) : should_die_(should_die) {}
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// A member function that may die.
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void MemberFunction() const {
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if (should_die_) {
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GTEST_LOG(FATAL, "death inside MayDie::MemberFunction().");
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}
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}
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private:
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// True iff MemberFunction() should die.
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bool should_die_;
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};
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// A global function that's expected to die.
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void GlobalFunction() {
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GTEST_LOG(FATAL, "death inside GlobalFunction().");
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}
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// A non-void function that's expected to die.
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int NonVoidFunction() {
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GTEST_LOG(FATAL, "death inside NonVoidFunction().");
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return 1;
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}
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// A unary function that may die.
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void DieIf(bool should_die) {
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if (should_die) {
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GTEST_LOG(FATAL, "death inside DieIf().");
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}
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}
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// A binary function that may die.
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bool DieIfLessThan(int x, int y) {
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if (x < y) {
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GTEST_LOG(FATAL, "death inside DieIfLessThan().");
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}
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return true;
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}
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// Tests that ASSERT_DEATH can be used outside a TEST, TEST_F, or test fixture.
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void DeathTestSubroutine() {
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EXPECT_DEATH(GlobalFunction(), "death.*GlobalFunction");
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ASSERT_DEATH(GlobalFunction(), "death.*GlobalFunction");
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}
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// Death in dbg, not opt.
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int DieInDebugElse12(int* sideeffect) {
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if (sideeffect) *sideeffect = 12;
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#ifndef NDEBUG
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GTEST_LOG(FATAL, "debug death inside DieInDebugElse12()");
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#endif // NDEBUG
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return 12;
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}
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// Returns the exit status of a process that calls exit(2) with a
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// given exit code. This is a helper function for the
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// ExitStatusPredicateTest test suite.
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static int NormalExitStatus(int exit_code) {
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pid_t child_pid = fork();
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if (child_pid == 0) {
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exit(exit_code);
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}
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int status;
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waitpid(child_pid, &status, 0);
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return status;
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}
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// Returns the exit status of a process that raises a given signal.
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// If the signal does not cause the process to die, then it returns
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// instead the exit status of a process that exits normally with exit
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// code 1. This is a helper function for the ExitStatusPredicateTest
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// test suite.
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static int KilledExitStatus(int signum) {
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pid_t child_pid = fork();
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if (child_pid == 0) {
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raise(signum);
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exit(1);
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}
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int status;
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waitpid(child_pid, &status, 0);
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return status;
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}
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// Tests the ExitedWithCode predicate.
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TEST(ExitStatusPredicateTest, ExitedWithCode) {
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const int status0 = NormalExitStatus(0);
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const int status1 = NormalExitStatus(1);
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const int status42 = NormalExitStatus(42);
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const testing::ExitedWithCode pred0(0);
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const testing::ExitedWithCode pred1(1);
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const testing::ExitedWithCode pred42(42);
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EXPECT_PRED1(pred0, status0);
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EXPECT_PRED1(pred1, status1);
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EXPECT_PRED1(pred42, status42);
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EXPECT_FALSE(pred0(status1));
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EXPECT_FALSE(pred42(status0));
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EXPECT_FALSE(pred1(status42));
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}
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// Tests the KilledBySignal predicate.
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TEST(ExitStatusPredicateTest, KilledBySignal) {
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const int status_segv = KilledExitStatus(SIGSEGV);
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const int status_kill = KilledExitStatus(SIGKILL);
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const testing::KilledBySignal pred_segv(SIGSEGV);
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const testing::KilledBySignal pred_kill(SIGKILL);
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EXPECT_PRED1(pred_segv, status_segv);
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EXPECT_PRED1(pred_kill, status_kill);
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EXPECT_FALSE(pred_segv(status_kill));
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EXPECT_FALSE(pred_kill(status_segv));
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}
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// Tests that the death test macros expand to code which may or may not
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// be followed by operator<<, and that in either case the complete text
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// comprises only a single C++ statement.
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TEST_F(TestForDeathTest, SingleStatement) {
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if (false)
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// This would fail if executed; this is a compilation test only
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ASSERT_DEATH(return, "");
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if (true)
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EXPECT_DEATH(exit(1), "");
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else
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// This empty "else" branch is meant to ensure that EXPECT_DEATH
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// doesn't expand into an "if" statement without an "else"
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;
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if (false)
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ASSERT_DEATH(return, "") << "did not die";
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if (false)
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;
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else
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EXPECT_DEATH(exit(1), "") << 1 << 2 << 3;
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}
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void DieWithEmbeddedNul() {
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fprintf(stderr, "Hello%cworld.\n", '\0');
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abort();
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}
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// Tests that EXPECT_DEATH and ASSERT_DEATH work when the error
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// message has a NUL character in it.
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TEST_F(TestForDeathTest, DISABLED_EmbeddedNulInMessage) {
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// TODO(wan@google.com): <regex.h> doesn't support matching strings
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// with embedded NUL characters - find a way to workaround it.
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EXPECT_DEATH(DieWithEmbeddedNul(), "w.*ld");
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ASSERT_DEATH(DieWithEmbeddedNul(), "w.*ld");
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}
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// Tests that death test macros expand to code which interacts well with switch
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// statements.
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TEST_F(TestForDeathTest, SwitchStatement) {
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switch (0)
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default:
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ASSERT_DEATH(exit(1), "") << "exit in default switch handler";
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switch (0)
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case 0:
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EXPECT_DEATH(exit(1), "") << "exit in switch case";
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}
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// Tests that a static member function can be used in a death test.
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TEST_F(TestForDeathTest, StaticMemberFunction) {
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ASSERT_DEATH(StaticMemberFunction(), "death.*StaticMember");
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}
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// Tests that a method of the test fixture can be used in a death test.
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TEST_F(TestForDeathTest, MemberFunction) {
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should_die_ = true;
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EXPECT_DEATH(MemberFunction(), "inside.*MemberFunction");
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}
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// Repeats a representative sample of death tests in the "threadsafe" style:
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TEST_F(TestForDeathTest, StaticMemberFunctionThreadsafeStyle) {
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testing::GTEST_FLAG(death_test_style) = "threadsafe";
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ASSERT_DEATH(StaticMemberFunction(), "death.*StaticMember");
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}
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TEST_F(TestForDeathTest, MemberFunctionThreadsafeStyle) {
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testing::GTEST_FLAG(death_test_style) = "threadsafe";
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should_die_ = true;
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EXPECT_DEATH(MemberFunction(), "inside.*MemberFunction");
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}
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TEST_F(TestForDeathTest, ThreadsafeDeathTestInLoop) {
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testing::GTEST_FLAG(death_test_style) = "threadsafe";
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for (int i = 0; i < 3; ++i)
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EXPECT_EXIT(exit(i), testing::ExitedWithCode(i), "") << ": i = " << i;
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}
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TEST_F(TestForDeathTest, MixedStyles) {
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testing::GTEST_FLAG(death_test_style) = "threadsafe";
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EXPECT_DEATH(exit(1), "");
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testing::GTEST_FLAG(death_test_style) = "fast";
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EXPECT_DEATH(exit(1), "");
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}
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namespace {
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bool pthread_flag;
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void SetPthreadFlag() {
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pthread_flag = true;
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}
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} // namespace
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TEST_F(TestForDeathTest, DoesNotExecuteAtforkHooks) {
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testing::GTEST_FLAG(death_test_style) = "threadsafe";
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pthread_flag = false;
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ASSERT_EQ(0, pthread_atfork(&SetPthreadFlag, NULL, NULL));
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ASSERT_DEATH(exit(1), "");
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ASSERT_FALSE(pthread_flag);
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}
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// Tests that a method of another class can be used in a death test.
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TEST_F(TestForDeathTest, MethodOfAnotherClass) {
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const MayDie x(true);
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ASSERT_DEATH(x.MemberFunction(), "MayDie\\:\\:MemberFunction");
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}
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// Tests that a global function can be used in a death test.
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TEST_F(TestForDeathTest, GlobalFunction) {
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EXPECT_DEATH(GlobalFunction(), "GlobalFunction");
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}
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// Tests that any value convertible to an RE works as a second
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// argument to EXPECT_DEATH.
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TEST_F(TestForDeathTest, AcceptsAnythingConvertibleToRE) {
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static const char regex_c_str[] = "GlobalFunction";
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EXPECT_DEATH(GlobalFunction(), regex_c_str);
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const testing::internal::RE regex(regex_c_str);
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EXPECT_DEATH(GlobalFunction(), regex);
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#if GTEST_HAS_GLOBAL_STRING
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const string regex_str(regex_c_str);
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EXPECT_DEATH(GlobalFunction(), regex_str);
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#endif // GTEST_HAS_GLOBAL_STRING
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#if GTEST_HAS_STD_STRING
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const ::std::string regex_std_str(regex_c_str);
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EXPECT_DEATH(GlobalFunction(), regex_std_str);
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#endif // GTEST_HAS_STD_STRING
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}
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// Tests that a non-void function can be used in a death test.
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TEST_F(TestForDeathTest, NonVoidFunction) {
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ASSERT_DEATH(NonVoidFunction(), "NonVoidFunction");
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}
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// Tests that functions that take parameter(s) can be used in a death test.
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TEST_F(TestForDeathTest, FunctionWithParameter) {
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EXPECT_DEATH(DieIf(true), "DieIf\\(\\)");
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EXPECT_DEATH(DieIfLessThan(2, 3), "DieIfLessThan");
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}
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// Tests that ASSERT_DEATH can be used outside a TEST, TEST_F, or test fixture.
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TEST_F(TestForDeathTest, OutsideFixture) {
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DeathTestSubroutine();
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}
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// Tests that death tests can be done inside a loop.
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TEST_F(TestForDeathTest, InsideLoop) {
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for (int i = 0; i < 5; i++) {
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EXPECT_DEATH(DieIfLessThan(-1, i), "DieIfLessThan") << "where i == " << i;
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}
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}
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// Tests that a compound statement can be used in a death test.
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TEST_F(TestForDeathTest, CompoundStatement) {
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EXPECT_DEATH({ // NOLINT
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const int x = 2;
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const int y = x + 1;
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DieIfLessThan(x, y);
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},
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"DieIfLessThan");
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}
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// Tests that code that doesn't die causes a death test to fail.
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TEST_F(TestForDeathTest, DoesNotDie) {
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EXPECT_NONFATAL_FAILURE(EXPECT_DEATH(DieIf(false), "DieIf"),
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"failed to die");
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}
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// Tests that a death test fails when the error message isn't expected.
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TEST_F(TestForDeathTest, ErrorMessageMismatch) {
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EXPECT_NONFATAL_FAILURE({ // NOLINT
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EXPECT_DEATH(DieIf(true), "DieIfLessThan") << "End of death test message.";
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}, "died but not with expected error");
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}
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// On exit, *aborted will be true iff the EXPECT_DEATH() statement
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// aborted the function.
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void ExpectDeathTestHelper(bool* aborted) {
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*aborted = true;
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EXPECT_DEATH(DieIf(false), "DieIf"); // This assertion should fail.
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*aborted = false;
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}
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||||
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||||
// Tests that EXPECT_DEATH doesn't abort the test on failure.
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||||
TEST_F(TestForDeathTest, EXPECT_DEATH) {
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bool aborted = true;
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EXPECT_NONFATAL_FAILURE(ExpectDeathTestHelper(&aborted),
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"failed to die");
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||||
EXPECT_FALSE(aborted);
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}
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||||
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||||
// Tests that ASSERT_DEATH does abort the test on failure.
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||||
TEST_F(TestForDeathTest, ASSERT_DEATH) {
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static bool aborted;
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EXPECT_FATAL_FAILURE({ // NOLINT
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aborted = true;
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ASSERT_DEATH(DieIf(false), "DieIf"); // This assertion should fail.
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aborted = false;
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}, "failed to die");
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EXPECT_TRUE(aborted);
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}
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// Tests that EXPECT_DEATH evaluates the arguments exactly once.
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TEST_F(TestForDeathTest, SingleEvaluation) {
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int x = 3;
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EXPECT_DEATH(DieIf((++x) == 4), "DieIf");
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const char* regex = "DieIf";
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const char* regex_save = regex;
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EXPECT_DEATH(DieIfLessThan(3, 4), regex++);
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EXPECT_EQ(regex_save + 1, regex);
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||||
}
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||||
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||||
// Tests that run-away death tests are reported as failures.
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||||
TEST_F(TestForDeathTest, Runaway) {
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||||
EXPECT_NONFATAL_FAILURE(EXPECT_DEATH(static_cast<void>(0), "Foo"),
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||||
"failed to die.");
|
||||
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||||
EXPECT_FATAL_FAILURE(ASSERT_DEATH(return, "Bar"),
|
||||
"illegal return in test statement.");
|
||||
}
|
||||
|
||||
|
||||
// Tests that EXPECT_DEBUG_DEATH works as expected,
|
||||
// that is, in debug mode, it:
|
||||
// 1. Asserts on death.
|
||||
// 2. Has no side effect.
|
||||
//
|
||||
// And in opt mode, it:
|
||||
// 1. Has side effects but does not assert.
|
||||
TEST_F(TestForDeathTest, TestExpectDebugDeath) {
|
||||
int sideeffect = 0;
|
||||
|
||||
EXPECT_DEBUG_DEATH(DieInDebugElse12(&sideeffect),
|
||||
"death.*DieInDebugElse12");
|
||||
|
||||
#ifdef NDEBUG
|
||||
// Checks that the assignment occurs in opt mode (sideeffect).
|
||||
EXPECT_EQ(12, sideeffect);
|
||||
#else
|
||||
// Checks that the assignment does not occur in dbg mode (no sideeffect).
|
||||
EXPECT_EQ(0, sideeffect);
|
||||
#endif
|
||||
}
|
||||
|
||||
// Tests that EXPECT_DEBUG_DEATH works as expected,
|
||||
// that is, in debug mode, it:
|
||||
// 1. Asserts on death.
|
||||
// 2. Has no side effect.
|
||||
//
|
||||
// And in opt mode, it:
|
||||
// 1. Has side effects and returns the expected value (12).
|
||||
TEST_F(TestForDeathTest, TestExpectDebugDeathM) {
|
||||
int sideeffect = 0;
|
||||
EXPECT_DEBUG_DEATH({ // NOLINT
|
||||
// Tests that the return value is 12 in opt mode.
|
||||
EXPECT_EQ(12, DieInDebugElse12(&sideeffect));
|
||||
// Tests that the side effect occurrs in opt mode.
|
||||
EXPECT_EQ(12, sideeffect);
|
||||
}, "death.*DieInDebugElse12") << "In ExpectDebugDeathM";
|
||||
|
||||
#ifdef NDEBUG
|
||||
// Checks that the assignment occurs in opt mode (sideeffect).
|
||||
EXPECT_EQ(12, sideeffect);
|
||||
#else
|
||||
// Checks that the assignment does not occur in dbg mode (no sideeffect).
|
||||
EXPECT_EQ(0, sideeffect);
|
||||
#endif
|
||||
}
|
||||
|
||||
// Tests that ASSERT_DEBUG_DEATH works as expected
|
||||
// In debug mode:
|
||||
// 1. Asserts on debug death.
|
||||
// 2. Has no side effect.
|
||||
//
|
||||
// In opt mode:
|
||||
// 1. Has side effects and returns the expected value (12).
|
||||
TEST_F(TestForDeathTest, TestAssertDebugDeathM) {
|
||||
int sideeffect = 0;
|
||||
|
||||
ASSERT_DEBUG_DEATH({ // NOLINT
|
||||
// Tests that the return value is 12 in opt mode.
|
||||
EXPECT_EQ(12, DieInDebugElse12(&sideeffect));
|
||||
// Tests that the side effect occurred in opt mode.
|
||||
EXPECT_EQ(12, sideeffect);
|
||||
}, "death.*DieInDebugElse12") << "In AssertDebugDeathM";
|
||||
|
||||
#ifdef NDEBUG
|
||||
// Checks that the assignment occurs in opt mode (sideeffect).
|
||||
EXPECT_EQ(12, sideeffect);
|
||||
#else
|
||||
// Checks that the assignment does not occur in dbg mode (no sideeffect).
|
||||
EXPECT_EQ(0, sideeffect);
|
||||
#endif
|
||||
}
|
||||
|
||||
#ifndef NDEBUG
|
||||
|
||||
void ExpectDebugDeathHelper(bool* aborted) {
|
||||
*aborted = true;
|
||||
EXPECT_DEBUG_DEATH(return, "") << "This is expected to fail.";
|
||||
*aborted = false;
|
||||
}
|
||||
|
||||
// Tests that EXPECT_DEBUG_DEATH in debug mode does not abort
|
||||
// the function.
|
||||
TEST_F(TestForDeathTest, ExpectDebugDeathDoesNotAbort) {
|
||||
bool aborted = true;
|
||||
EXPECT_NONFATAL_FAILURE(ExpectDebugDeathHelper(&aborted), "");
|
||||
EXPECT_FALSE(aborted);
|
||||
}
|
||||
|
||||
void AssertDebugDeathHelper(bool* aborted) {
|
||||
*aborted = true;
|
||||
ASSERT_DEBUG_DEATH(return, "") << "This is expected to fail.";
|
||||
*aborted = false;
|
||||
}
|
||||
|
||||
// Tests that ASSERT_DEBUG_DEATH in debug mode aborts the function on
|
||||
// failure.
|
||||
TEST_F(TestForDeathTest, AssertDebugDeathAborts) {
|
||||
static bool aborted;
|
||||
aborted = false;
|
||||
EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
|
||||
EXPECT_TRUE(aborted);
|
||||
}
|
||||
|
||||
#endif // _NDEBUG
|
||||
|
||||
// Tests the *_EXIT family of macros, using a variety of predicates.
|
||||
TEST_F(TestForDeathTest, ExitMacros) {
|
||||
EXPECT_EXIT(exit(1), testing::ExitedWithCode(1), "");
|
||||
ASSERT_EXIT(exit(42), testing::ExitedWithCode(42), "");
|
||||
EXPECT_EXIT(raise(SIGKILL), testing::KilledBySignal(SIGKILL), "") << "foo";
|
||||
ASSERT_EXIT(raise(SIGUSR2), testing::KilledBySignal(SIGUSR2), "") << "bar";
|
||||
|
||||
EXPECT_NONFATAL_FAILURE({ // NOLINT
|
||||
EXPECT_EXIT(raise(SIGSEGV), testing::ExitedWithCode(0), "")
|
||||
<< "This failure is expected.";
|
||||
}, "This failure is expected.");
|
||||
|
||||
EXPECT_FATAL_FAILURE({ // NOLINT
|
||||
ASSERT_EXIT(exit(0), testing::KilledBySignal(SIGSEGV), "")
|
||||
<< "This failure is expected, too.";
|
||||
}, "This failure is expected, too.");
|
||||
}
|
||||
|
||||
TEST_F(TestForDeathTest, InvalidStyle) {
|
||||
testing::GTEST_FLAG(death_test_style) = "rococo";
|
||||
EXPECT_NONFATAL_FAILURE({ // NOLINT
|
||||
EXPECT_DEATH(exit(0), "") << "This failure is expected.";
|
||||
}, "This failure is expected.");
|
||||
}
|
||||
|
||||
// A DeathTestFactory that returns MockDeathTests.
|
||||
class MockDeathTestFactory : public DeathTestFactory {
|
||||
public:
|
||||
MockDeathTestFactory();
|
||||
virtual bool Create(const char* statement,
|
||||
const ::testing::internal::RE* regex,
|
||||
const char* file, int line, DeathTest** test);
|
||||
|
||||
// Sets the parameters for subsequent calls to Create.
|
||||
void SetParameters(bool create, DeathTest::TestRole role,
|
||||
int status, bool passed);
|
||||
|
||||
// Accessors.
|
||||
int AssumeRoleCalls() const { return assume_role_calls_; }
|
||||
int WaitCalls() const { return wait_calls_; }
|
||||
int PassedCalls() const { return passed_args_.size(); }
|
||||
bool PassedArgument(int n) const { return passed_args_[n]; }
|
||||
int AbortCalls() const { return abort_args_.size(); }
|
||||
DeathTest::AbortReason AbortArgument(int n) const {
|
||||
return abort_args_[n];
|
||||
}
|
||||
bool TestDeleted() const { return test_deleted_; }
|
||||
|
||||
private:
|
||||
friend class MockDeathTest;
|
||||
// If true, Create will return a MockDeathTest; otherwise it returns
|
||||
// NULL.
|
||||
bool create_;
|
||||
// The value a MockDeathTest will return from its AssumeRole method.
|
||||
DeathTest::TestRole role_;
|
||||
// The value a MockDeathTest will return from its Wait method.
|
||||
int status_;
|
||||
// The value a MockDeathTest will return from its Passed method.
|
||||
bool passed_;
|
||||
|
||||
// Number of times AssumeRole was called.
|
||||
int assume_role_calls_;
|
||||
// Number of times Wait was called.
|
||||
int wait_calls_;
|
||||
// The arguments to the calls to Passed since the last call to
|
||||
// SetParameters.
|
||||
std::vector<bool> passed_args_;
|
||||
// The arguments to the calls to Abort since the last call to
|
||||
// SetParameters.
|
||||
std::vector<DeathTest::AbortReason> abort_args_;
|
||||
// True if the last MockDeathTest returned by Create has been
|
||||
// deleted.
|
||||
bool test_deleted_;
|
||||
};
|
||||
|
||||
|
||||
// A DeathTest implementation useful in testing. It returns values set
|
||||
// at its creation from its various inherited DeathTest methods, and
|
||||
// reports calls to those methods to its parent MockDeathTestFactory
|
||||
// object.
|
||||
class MockDeathTest : public DeathTest {
|
||||
public:
|
||||
MockDeathTest(MockDeathTestFactory *parent,
|
||||
TestRole role, int status, bool passed) :
|
||||
parent_(parent), role_(role), status_(status), passed_(passed) {
|
||||
}
|
||||
virtual ~MockDeathTest() {
|
||||
parent_->test_deleted_ = true;
|
||||
}
|
||||
virtual TestRole AssumeRole() {
|
||||
++parent_->assume_role_calls_;
|
||||
return role_;
|
||||
}
|
||||
virtual int Wait() {
|
||||
++parent_->wait_calls_;
|
||||
return status_;
|
||||
}
|
||||
virtual bool Passed(bool exit_status_ok) {
|
||||
parent_->passed_args_.push_back(exit_status_ok);
|
||||
return passed_;
|
||||
}
|
||||
virtual void Abort(AbortReason reason) {
|
||||
parent_->abort_args_.push_back(reason);
|
||||
}
|
||||
private:
|
||||
MockDeathTestFactory* const parent_;
|
||||
const TestRole role_;
|
||||
const int status_;
|
||||
const bool passed_;
|
||||
};
|
||||
|
||||
|
||||
// MockDeathTestFactory constructor.
|
||||
MockDeathTestFactory::MockDeathTestFactory()
|
||||
: create_(true),
|
||||
role_(DeathTest::OVERSEE_TEST),
|
||||
status_(0),
|
||||
passed_(true),
|
||||
assume_role_calls_(0),
|
||||
wait_calls_(0),
|
||||
passed_args_(),
|
||||
abort_args_() {
|
||||
}
|
||||
|
||||
|
||||
// Sets the parameters for subsequent calls to Create.
|
||||
void MockDeathTestFactory::SetParameters(bool create,
|
||||
DeathTest::TestRole role,
|
||||
int status, bool passed) {
|
||||
create_ = create;
|
||||
role_ = role;
|
||||
status_ = status;
|
||||
passed_ = passed;
|
||||
|
||||
assume_role_calls_ = 0;
|
||||
wait_calls_ = 0;
|
||||
passed_args_.clear();
|
||||
abort_args_.clear();
|
||||
}
|
||||
|
||||
|
||||
// Sets test to NULL (if create_ is false) or to the address of a new
|
||||
// MockDeathTest object with parameters taken from the last call
|
||||
// to SetParameters (if create_ is true). Always returns true.
|
||||
bool MockDeathTestFactory::Create(const char* statement,
|
||||
const ::testing::internal::RE* regex,
|
||||
const char* file, int line,
|
||||
DeathTest** test) {
|
||||
test_deleted_ = false;
|
||||
if (create_) {
|
||||
*test = new MockDeathTest(this, role_, status_, passed_);
|
||||
} else {
|
||||
*test = NULL;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
// A test fixture for testing the logic of the GTEST_DEATH_TEST macro.
|
||||
// It installs a MockDeathTestFactory that is used for the duration
|
||||
// of the test case.
|
||||
class MacroLogicDeathTest : public testing::Test {
|
||||
protected:
|
||||
static testing::internal::ReplaceDeathTestFactory* replacer_;
|
||||
static MockDeathTestFactory* factory_;
|
||||
|
||||
static void SetUpTestCase() {
|
||||
factory_ = new MockDeathTestFactory;
|
||||
replacer_ = new testing::internal::ReplaceDeathTestFactory(
|
||||
testing::UnitTest::GetInstance(), factory_);
|
||||
}
|
||||
|
||||
static void TearDownTestCase() {
|
||||
delete replacer_;
|
||||
replacer_ = NULL;
|
||||
delete factory_;
|
||||
factory_ = NULL;
|
||||
}
|
||||
|
||||
// Runs a death test that breaks the rules by returning. Such a death
|
||||
// test cannot be run directly from a test routine that uses a
|
||||
// MockDeathTest, or the remainder of the routine will not be executed.
|
||||
static void RunReturningDeathTest(bool* flag) {
|
||||
ASSERT_DEATH({ // NOLINT
|
||||
*flag = true;
|
||||
return;
|
||||
}, "");
|
||||
}
|
||||
};
|
||||
|
||||
testing::internal::ReplaceDeathTestFactory* MacroLogicDeathTest::replacer_
|
||||
= NULL;
|
||||
MockDeathTestFactory* MacroLogicDeathTest::factory_ = NULL;
|
||||
|
||||
|
||||
// Test that nothing happens when the factory doesn't return a DeathTest:
|
||||
TEST_F(MacroLogicDeathTest, NothingHappens) {
|
||||
bool flag = false;
|
||||
factory_->SetParameters(false, DeathTest::OVERSEE_TEST, 0, true);
|
||||
EXPECT_DEATH(flag = true, "");
|
||||
EXPECT_FALSE(flag);
|
||||
EXPECT_EQ(0, factory_->AssumeRoleCalls());
|
||||
EXPECT_EQ(0, factory_->WaitCalls());
|
||||
EXPECT_EQ(0, factory_->PassedCalls());
|
||||
EXPECT_EQ(0, factory_->AbortCalls());
|
||||
EXPECT_FALSE(factory_->TestDeleted());
|
||||
}
|
||||
|
||||
// Test that the parent process doesn't run the death test code,
|
||||
// and that the Passed method returns false when the (simulated)
|
||||
// child process exits with status 0:
|
||||
TEST_F(MacroLogicDeathTest, ChildExitsSuccessfully) {
|
||||
bool flag = false;
|
||||
factory_->SetParameters(true, DeathTest::OVERSEE_TEST, 0, true);
|
||||
EXPECT_DEATH(flag = true, "");
|
||||
EXPECT_FALSE(flag);
|
||||
EXPECT_EQ(1, factory_->AssumeRoleCalls());
|
||||
EXPECT_EQ(1, factory_->WaitCalls());
|
||||
ASSERT_EQ(1, factory_->PassedCalls());
|
||||
EXPECT_FALSE(factory_->PassedArgument(0));
|
||||
EXPECT_EQ(0, factory_->AbortCalls());
|
||||
EXPECT_TRUE(factory_->TestDeleted());
|
||||
}
|
||||
|
||||
// Tests that the Passed method was given the argument "true" when
|
||||
// the (simulated) child process exits with status 1:
|
||||
TEST_F(MacroLogicDeathTest, ChildExitsUnsuccessfully) {
|
||||
bool flag = false;
|
||||
factory_->SetParameters(true, DeathTest::OVERSEE_TEST, 1, true);
|
||||
EXPECT_DEATH(flag = true, "");
|
||||
EXPECT_FALSE(flag);
|
||||
EXPECT_EQ(1, factory_->AssumeRoleCalls());
|
||||
EXPECT_EQ(1, factory_->WaitCalls());
|
||||
ASSERT_EQ(1, factory_->PassedCalls());
|
||||
EXPECT_TRUE(factory_->PassedArgument(0));
|
||||
EXPECT_EQ(0, factory_->AbortCalls());
|
||||
EXPECT_TRUE(factory_->TestDeleted());
|
||||
}
|
||||
|
||||
// Tests that the (simulated) child process executes the death test
|
||||
// code, and is aborted with the correct AbortReason if it
|
||||
// executes a return statement.
|
||||
TEST_F(MacroLogicDeathTest, ChildPerformsReturn) {
|
||||
bool flag = false;
|
||||
factory_->SetParameters(true, DeathTest::EXECUTE_TEST, 0, true);
|
||||
RunReturningDeathTest(&flag);
|
||||
EXPECT_TRUE(flag);
|
||||
EXPECT_EQ(1, factory_->AssumeRoleCalls());
|
||||
EXPECT_EQ(0, factory_->WaitCalls());
|
||||
EXPECT_EQ(0, factory_->PassedCalls());
|
||||
EXPECT_EQ(1, factory_->AbortCalls());
|
||||
EXPECT_EQ(DeathTest::TEST_ENCOUNTERED_RETURN_STATEMENT,
|
||||
factory_->AbortArgument(0));
|
||||
EXPECT_TRUE(factory_->TestDeleted());
|
||||
}
|
||||
|
||||
// Tests that the (simulated) child process is aborted with the
|
||||
// correct AbortReason if it does not die.
|
||||
TEST_F(MacroLogicDeathTest, ChildDoesNotDie) {
|
||||
bool flag = false;
|
||||
factory_->SetParameters(true, DeathTest::EXECUTE_TEST, 0, true);
|
||||
EXPECT_DEATH(flag = true, "");
|
||||
EXPECT_TRUE(flag);
|
||||
EXPECT_EQ(1, factory_->AssumeRoleCalls());
|
||||
EXPECT_EQ(0, factory_->WaitCalls());
|
||||
EXPECT_EQ(0, factory_->PassedCalls());
|
||||
// This time there are two calls to Abort: one since the test didn't
|
||||
// die, and another from the ReturnSentinel when it's destroyed. The
|
||||
// sentinel normally isn't destroyed if a test doesn't die, since
|
||||
// exit(2) is called in that case by ForkingDeathTest, but not by
|
||||
// our MockDeathTest.
|
||||
ASSERT_EQ(2, factory_->AbortCalls());
|
||||
EXPECT_EQ(DeathTest::TEST_DID_NOT_DIE,
|
||||
factory_->AbortArgument(0));
|
||||
EXPECT_EQ(DeathTest::TEST_ENCOUNTERED_RETURN_STATEMENT,
|
||||
factory_->AbortArgument(1));
|
||||
EXPECT_TRUE(factory_->TestDeleted());
|
||||
}
|
||||
|
||||
// Returns the number of successful parts in the current test.
|
||||
static size_t GetSuccessfulTestPartCount() {
|
||||
return testing::UnitTest::GetInstance()->impl()->current_test_result()->
|
||||
successful_part_count();
|
||||
}
|
||||
|
||||
// Tests that a successful death test does not register a successful
|
||||
// test part.
|
||||
TEST(SuccessRegistrationDeathTest, NoSuccessPart) {
|
||||
EXPECT_DEATH(exit(1), "");
|
||||
EXPECT_EQ(0u, GetSuccessfulTestPartCount());
|
||||
}
|
||||
|
||||
TEST(StreamingAssertionsDeathTest, DeathTest) {
|
||||
EXPECT_DEATH(exit(1), "") << "unexpected failure";
|
||||
ASSERT_DEATH(exit(1), "") << "unexpected failure";
|
||||
EXPECT_NONFATAL_FAILURE({ // NOLINT
|
||||
EXPECT_DEATH(exit(0), "") << "expected failure";
|
||||
}, "expected failure");
|
||||
EXPECT_FATAL_FAILURE({ // NOLINT
|
||||
ASSERT_DEATH(exit(0), "") << "expected failure";
|
||||
}, "expected failure");
|
||||
}
|
||||
|
||||
#endif // GTEST_HAS_DEATH_TEST
|
||||
|
||||
// Tests that a test case whose name ends with "DeathTest" works fine
|
||||
// on Windows.
|
||||
TEST(NotADeathTest, Test) {
|
||||
SUCCEED();
|
||||
}
|
||||
Reference in New Issue
Block a user