llvm-6502/utils/unittest/googletest/include/gtest/internal/gtest-death-test-internal.h

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// Copyright 2005, 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.
//
// Authors: wan@google.com (Zhanyong Wan), eefacm@gmail.com (Sean Mcafee)
//
// The Google C++ Testing Framework (Google Test)
//
// This header file defines internal utilities needed for implementing
// death tests. They are subject to change without notice.
#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_DEATH_TEST_INTERNAL_H_
#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_DEATH_TEST_INTERNAL_H_
#include <gtest/internal/gtest-internal.h>
namespace testing {
namespace internal {
GTEST_DECLARE_string_(internal_run_death_test);
// Names of the flags (needed for parsing Google Test flags).
const char kDeathTestStyleFlag[] = "death_test_style";
const char kInternalRunDeathTestFlag[] = "internal_run_death_test";
#ifdef GTEST_HAS_DEATH_TEST
// DeathTest is a class that hides much of the complexity of the
// GTEST_DEATH_TEST_ macro. It is abstract; its static Create method
// returns a concrete class that depends on the prevailing death test
// style, as defined by the --gtest_death_test_style and/or
// --gtest_internal_run_death_test flags.
// In describing the results of death tests, these terms are used with
// the corresponding definitions:
//
// exit status: The integer exit information in the format specified
// by wait(2)
// exit code: The integer code passed to exit(3), _exit(2), or
// returned from main()
class DeathTest {
public:
// Create returns false if there was an error determining the
// appropriate action to take for the current death test; for example,
// if the gtest_death_test_style flag is set to an invalid value.
// The LastMessage method will return a more detailed message in that
// case. Otherwise, the DeathTest pointer pointed to by the "test"
// argument is set. If the death test should be skipped, the pointer
// is set to NULL; otherwise, it is set to the address of a new concrete
// DeathTest object that controls the execution of the current test.
static bool Create(const char* statement, const RE* regex,
const char* file, int line, DeathTest** test);
DeathTest();
virtual ~DeathTest() { }
// A helper class that aborts a death test when it's deleted.
class ReturnSentinel {
public:
explicit ReturnSentinel(DeathTest* test) : test_(test) { }
~ReturnSentinel() { test_->Abort(TEST_ENCOUNTERED_RETURN_STATEMENT); }
private:
DeathTest* const test_;
GTEST_DISALLOW_COPY_AND_ASSIGN_(ReturnSentinel);
} GTEST_ATTRIBUTE_UNUSED_;
// An enumeration of possible roles that may be taken when a death
// test is encountered. EXECUTE means that the death test logic should
// be executed immediately. OVERSEE means that the program should prepare
// the appropriate environment for a child process to execute the death
// test, then wait for it to complete.
enum TestRole { OVERSEE_TEST, EXECUTE_TEST };
// An enumeration of the two reasons that a test might be aborted.
enum AbortReason { TEST_ENCOUNTERED_RETURN_STATEMENT, TEST_DID_NOT_DIE };
// Assumes one of the above roles.
virtual TestRole AssumeRole() = 0;
// Waits for the death test to finish and returns its status.
virtual int Wait() = 0;
// Returns true if the death test passed; that is, the test process
// exited during the test, its exit status matches a user-supplied
// predicate, and its stderr output matches a user-supplied regular
// expression.
// The user-supplied predicate may be a macro expression rather
// than a function pointer or functor, or else Wait and Passed could
// be combined.
virtual bool Passed(bool exit_status_ok) = 0;
// Signals that the death test did not die as expected.
virtual void Abort(AbortReason reason) = 0;
// Returns a human-readable outcome message regarding the outcome of
// the last death test.
static const char* LastMessage();
private:
GTEST_DISALLOW_COPY_AND_ASSIGN_(DeathTest);
};
// Factory interface for death tests. May be mocked out for testing.
class DeathTestFactory {
public:
virtual ~DeathTestFactory() { }
virtual bool Create(const char* statement, const RE* regex,
const char* file, int line, DeathTest** test) = 0;
};
// A concrete DeathTestFactory implementation for normal use.
class DefaultDeathTestFactory : public DeathTestFactory {
public:
virtual bool Create(const char* statement, const RE* regex,
const char* file, int line, DeathTest** test);
};
// Returns true if exit_status describes a process that was terminated
// by a signal, or exited normally with a nonzero exit code.
bool ExitedUnsuccessfully(int exit_status);
// This macro is for implementing ASSERT_DEATH*, EXPECT_DEATH*,
// ASSERT_EXIT*, and EXPECT_EXIT*.
#define GTEST_DEATH_TEST_(statement, predicate, regex, fail) \
GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
if (true) { \
const ::testing::internal::RE& gtest_regex = (regex); \
::testing::internal::DeathTest* gtest_dt; \
if (!::testing::internal::DeathTest::Create(#statement, &gtest_regex, \
__FILE__, __LINE__, &gtest_dt)) { \
goto GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__); \
} \
if (gtest_dt != NULL) { \
::testing::internal::scoped_ptr< ::testing::internal::DeathTest> \
gtest_dt_ptr(gtest_dt); \
switch (gtest_dt->AssumeRole()) { \
case ::testing::internal::DeathTest::OVERSEE_TEST: \
if (!gtest_dt->Passed(predicate(gtest_dt->Wait()))) { \
goto GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__); \
} \
break; \
case ::testing::internal::DeathTest::EXECUTE_TEST: { \
::testing::internal::DeathTest::ReturnSentinel \
gtest_sentinel(gtest_dt); \
{ statement; } \
gtest_dt->Abort(::testing::internal::DeathTest::TEST_DID_NOT_DIE); \
break; \
} \
} \
} \
} else \
GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__): \
fail(::testing::internal::DeathTest::LastMessage())
// The symbol "fail" here expands to something into which a message
// can be streamed.
// A struct representing the parsed contents of the
// --gtest_internal_run_death_test flag, as it existed when
// RUN_ALL_TESTS was called.
struct InternalRunDeathTestFlag {
String file;
int line;
int index;
int status_fd;
};
// Returns a newly created InternalRunDeathTestFlag object with fields
// initialized from the GTEST_FLAG(internal_run_death_test) flag if
// the flag is specified; otherwise returns NULL.
InternalRunDeathTestFlag* ParseInternalRunDeathTestFlag();
#endif // GTEST_HAS_DEATH_TEST
} // namespace internal
} // namespace testing
#endif // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_DEATH_TEST_INTERNAL_H_