295 lines
11 KiB
C
295 lines
11 KiB
C
|
// 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.
|
||
|
|
//
|
||
|
|
// Author: wan@google.com (Zhanyong Wan)
|
||
|
|
//
|
||
|
|
// The Google C++ Testing Framework (Google Test)
|
||
|
|
//
|
||
|
|
// This header file defines the public API for death tests. It is
|
||
|
|
// #included by gtest.h so a user doesn't need to include this
|
||
|
|
// directly.
|
||
|
|
|
||
|
|
#ifndef GTEST_INCLUDE_GTEST_GTEST_DEATH_TEST_H_
|
||
|
|
#define GTEST_INCLUDE_GTEST_GTEST_DEATH_TEST_H_
|
||
|
|
|
||
|
|
#include "gtest/internal/gtest-death-test-internal.h"
|
||
|
|
|
||
|
|
namespace testing {
|
||
|
|
|
||
|
|
// This flag controls the style of death tests. Valid values are "threadsafe",
|
||
|
|
// meaning that the death test child process will re-execute the test binary
|
||
|
|
// from the start, running only a single death test, or "fast",
|
||
|
|
// meaning that the child process will execute the test logic immediately
|
||
|
|
// after forking.
|
||
|
|
GTEST_DECLARE_string_(death_test_style);
|
||
|
|
|
||
|
|
#if GTEST_HAS_DEATH_TEST
|
||
|
|
|
||
|
|
namespace internal {
|
||
|
|
|
||
|
|
// Returns a Boolean value indicating whether the caller is currently
|
||
|
|
// executing in the context of the death test child process. Tools such as
|
||
|
|
// Valgrind heap checkers may need this to modify their behavior in death
|
||
|
|
// tests. IMPORTANT: This is an internal utility. Using it may break the
|
||
|
|
// implementation of death tests. User code MUST NOT use it.
|
||
|
|
GTEST_API_ bool InDeathTestChild();
|
||
|
|
|
||
|
|
} // namespace internal
|
||
|
|
|
||
|
|
// The following macros are useful for writing death tests.
|
||
|
|
|
||
|
|
// Here's what happens when an ASSERT_DEATH* or EXPECT_DEATH* is
|
||
|
|
// executed:
|
||
|
|
//
|
||
|
|
// 1. It generates a warning if there is more than one active
|
||
|
|
// thread. This is because it's safe to fork() or clone() only
|
||
|
|
// when there is a single thread.
|
||
|
|
//
|
||
|
|
// 2. The parent process clone()s a sub-process and runs the death
|
||
|
|
// test in it; the sub-process exits with code 0 at the end of the
|
||
|
|
// death test, if it hasn't exited already.
|
||
|
|
//
|
||
|
|
// 3. The parent process waits for the sub-process to terminate.
|
||
|
|
//
|
||
|
|
// 4. The parent process checks the exit code and error message of
|
||
|
|
// the sub-process.
|
||
|
|
//
|
||
|
|
// Examples:
|
||
|
|
//
|
||
|
|
// ASSERT_DEATH(server.SendMessage(56, "Hello"), "Invalid port number");
|
||
|
|
// for (int i = 0; i < 5; i++) {
|
||
|
|
// EXPECT_DEATH(server.ProcessRequest(i),
|
||
|
|
// "Invalid request .* in ProcessRequest()")
|
||
|
|
// << "Failed to die on request " << i;
|
||
|
|
// }
|
||
|
|
//
|
||
|
|
// ASSERT_EXIT(server.ExitNow(), ::testing::ExitedWithCode(0), "Exiting");
|
||
|
|
//
|
||
|
|
// bool KilledBySIGHUP(int exit_code) {
|
||
|
|
// return WIFSIGNALED(exit_code) && WTERMSIG(exit_code) == SIGHUP;
|
||
|
|
// }
|
||
|
|
//
|
||
|
|
// ASSERT_EXIT(client.HangUpServer(), KilledBySIGHUP, "Hanging up!");
|
||
|
|
//
|
||
|
|
// On the regular expressions used in death tests:
|
||
|
|
//
|
||
|
|
// On POSIX-compliant systems (*nix), we use the <regex.h> library,
|
||
|
|
// which uses the POSIX extended regex syntax.
|
||
|
|
//
|
||
|
|
// On other platforms (e.g. Windows), we only support a simple regex
|
||
|
|
// syntax implemented as part of Google Test. This limited
|
||
|
|
// implementation should be enough most of the time when writing
|
||
|
|
// death tests; though it lacks many features you can find in PCRE
|
||
|
|
// or POSIX extended regex syntax. For example, we don't support
|
||
|
|
// union ("x|y"), grouping ("(xy)"), brackets ("[xy]"), and
|
||
|
|
// repetition count ("x{5,7}"), among others.
|
||
|
|
//
|
||
|
|
// Below is the syntax that we do support. We chose it to be a
|
||
|
|
// subset of both PCRE and POSIX extended regex, so it's easy to
|
||
|
|
// learn wherever you come from. In the following: 'A' denotes a
|
||
|
|
// literal character, period (.), or a single \\ escape sequence;
|
||
|
|
// 'x' and 'y' denote regular expressions; 'm' and 'n' are for
|
||
|
|
// natural numbers.
|
||
|
|
//
|
||
|
|
// c matches any literal character c
|
||
|
|
// \\d matches any decimal digit
|
||
|
|
// \\D matches any character that's not a decimal digit
|
||
|
|
// \\f matches \f
|
||
|
|
// \\n matches \n
|
||
|
|
// \\r matches \r
|
||
|
|
// \\s matches any ASCII whitespace, including \n
|
||
|
|
// \\S matches any character that's not a whitespace
|
||
|
|
// \\t matches \t
|
||
|
|
// \\v matches \v
|
||
|
|
// \\w matches any letter, _, or decimal digit
|
||
|
|
// \\W matches any character that \\w doesn't match
|
||
|
|
// \\c matches any literal character c, which must be a punctuation
|
||
|
|
// . matches any single character except \n
|
||
|
|
// A? matches 0 or 1 occurrences of A
|
||
|
|
// A* matches 0 or many occurrences of A
|
||
|
|
// A+ matches 1 or many occurrences of A
|
||
|
|
// ^ matches the beginning of a string (not that of each line)
|
||
|
|
// $ matches the end of a string (not that of each line)
|
||
|
|
// xy matches x followed by y
|
||
|
|
//
|
||
|
|
// If you accidentally use PCRE or POSIX extended regex features
|
||
|
|
// not implemented by us, you will get a run-time failure. In that
|
||
|
|
// case, please try to rewrite your regular expression within the
|
||
|
|
// above syntax.
|
||
|
|
//
|
||
|
|
// This implementation is *not* meant to be as highly tuned or robust
|
||
|
|
// as a compiled regex library, but should perform well enough for a
|
||
|
|
// death test, which already incurs significant overhead by launching
|
||
|
|
// a child process.
|
||
|
|
//
|
||
|
|
// Known caveats:
|
||
|
|
//
|
||
|
|
// A "threadsafe" style death test obtains the path to the test
|
||
|
|
// program from argv[0] and re-executes it in the sub-process. For
|
||
|
|
// simplicity, the current implementation doesn't search the PATH
|
||
|
|
// when launching the sub-process. This means that the user must
|
||
|
|
// invoke the test program via a path that contains at least one
|
||
|
|
// path separator (e.g. path/to/foo_test and
|
||
|
|
// /absolute/path/to/bar_test are fine, but foo_test is not). This
|
||
|
|
// is rarely a problem as people usually don't put the test binary
|
||
|
|
// directory in PATH.
|
||
|
|
//
|
||
|
|
// TODO(wan@google.com): make thread-safe death tests search the PATH.
|
||
|
|
|
||
|
|
// Asserts that a given statement causes the program to exit, with an
|
||
|
|
// integer exit status that satisfies predicate, and emitting error output
|
||
|
|
// that matches regex.
|
||
|
|
# define ASSERT_EXIT(statement, predicate, regex) \
|
||
|
|
GTEST_DEATH_TEST_(statement, predicate, regex, GTEST_FATAL_FAILURE_)
|
||
|
|
|
||
|
|
// Like ASSERT_EXIT, but continues on to successive tests in the
|
||
|
|
// test case, if any:
|
||
|
|
# define EXPECT_EXIT(statement, predicate, regex) \
|
||
|
|
GTEST_DEATH_TEST_(statement, predicate, regex, GTEST_NONFATAL_FAILURE_)
|
||
|
|
|
||
|
|
// Asserts that a given statement causes the program to exit, either by
|
||
|
|
// explicitly exiting with a nonzero exit code or being killed by a
|
||
|
|
// signal, and emitting error output that matches regex.
|
||
|
|
# define ASSERT_DEATH(statement, regex) \
|
||
|
|
ASSERT_EXIT(statement, ::testing::internal::ExitedUnsuccessfully, regex)
|
||
|
|
|
||
|
|
// Like ASSERT_DEATH, but continues on to successive tests in the
|
||
|
|
// test case, if any:
|
||
|
|
# define EXPECT_DEATH(statement, regex) \
|
||
|
|
EXPECT_EXIT(statement, ::testing::internal::ExitedUnsuccessfully, regex)
|
||
|
|
|
||
|
|
// Two predicate classes that can be used in {ASSERT,EXPECT}_EXIT*:
|
||
|
|
|
||
|
|
// Tests that an exit code describes a normal exit with a given exit code.
|
||
|
|
class GTEST_API_ ExitedWithCode {
|
||
|
|
public:
|
||
|
|
explicit ExitedWithCode(int exit_code);
|
||
|
|
bool operator()(int exit_status) const;
|
||
|
|
private:
|
||
|
|
// No implementation - assignment is unsupported.
|
||
|
|
void operator=(const ExitedWithCode& other);
|
||
|
|
|
||
|
|
const int exit_code_;
|
||
|
|
};
|
||
|
|
|
||
|
|
# if !GTEST_OS_WINDOWS
|
||
|
|
// Tests that an exit code describes an exit due to termination by a
|
||
|
|
// given signal.
|
||
|
|
class GTEST_API_ KilledBySignal {
|
||
|
|
public:
|
||
|
|
explicit KilledBySignal(int signum);
|
||
|
|
bool operator()(int exit_status) const;
|
||
|
|
private:
|
||
|
|
const int signum_;
|
||
|
|
};
|
||
|
|
# endif // !GTEST_OS_WINDOWS
|
||
|
|
|
||
|
|
// EXPECT_DEBUG_DEATH asserts that the given statements die in debug mode.
|
||
|
|
// The death testing framework causes this to have interesting semantics,
|
||
|
|
// since the sideeffects of the call are only visible in opt mode, and not
|
||
|
|
// in debug mode.
|
||
|
|
//
|
||
|
|
// In practice, this can be used to test functions that utilize the
|
||
|
|
// LOG(DFATAL) macro using the following style:
|
||
|
|
//
|
||
|
|
// int DieInDebugOr12(int* sideeffect) {
|
||
|
|
// if (sideeffect) {
|
||
|
|
// *sideeffect = 12;
|
||
|
|
// }
|
||
|
|
// LOG(DFATAL) << "death";
|
||
|
|
// return 12;
|
||
|
|
// }
|
||
|
|
//
|
||
|
|
// TEST(TestCase, TestDieOr12WorksInDgbAndOpt) {
|
||
|
|
// int sideeffect = 0;
|
||
|
|
// // Only asserts in dbg.
|
||
|
|
// EXPECT_DEBUG_DEATH(DieInDebugOr12(&sideeffect), "death");
|
||
|
|
//
|
||
|
|
// #ifdef NDEBUG
|
||
|
|
// // opt-mode has sideeffect visible.
|
||
|
|
// EXPECT_EQ(12, sideeffect);
|
||
|
|
// #else
|
||
|
|
// // dbg-mode no visible sideeffect.
|
||
|
|
// EXPECT_EQ(0, sideeffect);
|
||
|
|
// #endif
|
||
|
|
// }
|
||
|
|
//
|
||
|
|
// This will assert that DieInDebugReturn12InOpt() crashes in debug
|
||
|
|
// mode, usually due to a DCHECK or LOG(DFATAL), but returns the
|
||
|
|
// appropriate fallback value (12 in this case) in opt mode. If you
|
||
|
|
// need to test that a function has appropriate side-effects in opt
|
||
|
|
// mode, include assertions against the side-effects. A general
|
||
|
|
// pattern for this is:
|
||
|
|
//
|
||
|
|
// EXPECT_DEBUG_DEATH({
|
||
|
|
// // Side-effects here will have an effect after this statement in
|
||
|
|
// // opt mode, but none in debug mode.
|
||
|
|
// EXPECT_EQ(12, DieInDebugOr12(&sideeffect));
|
||
|
|
// }, "death");
|
||
|
|
//
|
||
|
|
# ifdef NDEBUG
|
||
|
|
|
||
|
|
# define EXPECT_DEBUG_DEATH(statement, regex) \
|
||
|
|
GTEST_EXECUTE_STATEMENT_(statement, regex)
|
||
|
|
|
||
|
|
# define ASSERT_DEBUG_DEATH(statement, regex) \
|
||
|
|
GTEST_EXECUTE_STATEMENT_(statement, regex)
|
||
|
|
|
||
|
|
# else
|
||
|
|
|
||
|
|
# define EXPECT_DEBUG_DEATH(statement, regex) \
|
||
|
|
EXPECT_DEATH(statement, regex)
|
||
|
|
|
||
|
|
# define ASSERT_DEBUG_DEATH(statement, regex) \
|
||
|
|
ASSERT_DEATH(statement, regex)
|
||
|
|
|
||
|
|
# endif // NDEBUG for EXPECT_DEBUG_DEATH
|
||
|
|
#endif // GTEST_HAS_DEATH_TEST
|
||
|
|
|
||
|
|
// EXPECT_DEATH_IF_SUPPORTED(statement, regex) and
|
||
|
|
// ASSERT_DEATH_IF_SUPPORTED(statement, regex) expand to real death tests if
|
||
|
|
// death tests are supported; otherwise they just issue a warning. This is
|
||
|
|
// useful when you are combining death test assertions with normal test
|
||
|
|
// assertions in one test.
|
||
|
|
#if GTEST_HAS_DEATH_TEST
|
||
|
|
# define EXPECT_DEATH_IF_SUPPORTED(statement, regex) \
|
||
|
|
EXPECT_DEATH(statement, regex)
|
||
|
|
# define ASSERT_DEATH_IF_SUPPORTED(statement, regex) \
|
||
|
|
ASSERT_DEATH(statement, regex)
|
||
|
|
#else
|
||
|
|
# define EXPECT_DEATH_IF_SUPPORTED(statement, regex) \
|
||
|
|
GTEST_UNSUPPORTED_DEATH_TEST_(statement, regex, )
|
||
|
|
# define ASSERT_DEATH_IF_SUPPORTED(statement, regex) \
|
||
|
|
GTEST_UNSUPPORTED_DEATH_TEST_(statement, regex, return)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
} // namespace testing
|
||
|
|
|
||
|
|
#endif // GTEST_INCLUDE_GTEST_GTEST_DEATH_TEST_H_
|