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233 lines
9.7 KiB
C
233 lines
9.7 KiB
C
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// Copyright 2007, 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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// Utilities for testing Google Test itself and code that uses Google Test
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// (e.g. frameworks built on top of Google Test).
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#ifndef GTEST_INCLUDE_GTEST_GTEST_SPI_H_
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#define GTEST_INCLUDE_GTEST_GTEST_SPI_H_
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#include "gtest/gtest.h"
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namespace testing {
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// This helper class can be used to mock out Google Test failure reporting
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// so that we can test Google Test or code that builds on Google Test.
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//
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// An object of this class appends a TestPartResult object to the
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// TestPartResultArray object given in the constructor whenever a Google Test
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// failure is reported. It can either intercept only failures that are
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// generated in the same thread that created this object or it can intercept
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// all generated failures. The scope of this mock object can be controlled with
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// the second argument to the two arguments constructor.
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class GTEST_API_ ScopedFakeTestPartResultReporter
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: public TestPartResultReporterInterface {
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public:
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// The two possible mocking modes of this object.
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enum InterceptMode {
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INTERCEPT_ONLY_CURRENT_THREAD, // Intercepts only thread local failures.
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INTERCEPT_ALL_THREADS // Intercepts all failures.
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};
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// The c'tor sets this object as the test part result reporter used
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// by Google Test. The 'result' parameter specifies where to report the
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// results. This reporter will only catch failures generated in the current
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// thread. DEPRECATED
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explicit ScopedFakeTestPartResultReporter(TestPartResultArray* result);
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// Same as above, but you can choose the interception scope of this object.
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ScopedFakeTestPartResultReporter(InterceptMode intercept_mode,
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TestPartResultArray* result);
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// The d'tor restores the previous test part result reporter.
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virtual ~ScopedFakeTestPartResultReporter();
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// Appends the TestPartResult object to the TestPartResultArray
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// received in the constructor.
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//
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// This method is from the TestPartResultReporterInterface
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// interface.
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virtual void ReportTestPartResult(const TestPartResult& result);
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private:
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void Init();
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const InterceptMode intercept_mode_;
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TestPartResultReporterInterface* old_reporter_;
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TestPartResultArray* const result_;
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GTEST_DISALLOW_COPY_AND_ASSIGN_(ScopedFakeTestPartResultReporter);
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};
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namespace internal {
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// A helper class for implementing EXPECT_FATAL_FAILURE() and
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// EXPECT_NONFATAL_FAILURE(). Its destructor verifies that the given
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// TestPartResultArray contains exactly one failure that has the given
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// type and contains the given substring. If that's not the case, a
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// non-fatal failure will be generated.
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class GTEST_API_ SingleFailureChecker {
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public:
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// The constructor remembers the arguments.
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SingleFailureChecker(const TestPartResultArray* results,
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TestPartResult::Type type,
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const string& substr);
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~SingleFailureChecker();
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private:
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const TestPartResultArray* const results_;
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const TestPartResult::Type type_;
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const string substr_;
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GTEST_DISALLOW_COPY_AND_ASSIGN_(SingleFailureChecker);
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};
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} // namespace internal
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} // namespace testing
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// A set of macros for testing Google Test assertions or code that's expected
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// to generate Google Test fatal failures. It verifies that the given
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// statement will cause exactly one fatal Google Test failure with 'substr'
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// being part of the failure message.
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//
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// There are two different versions of this macro. EXPECT_FATAL_FAILURE only
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// affects and considers failures generated in the current thread and
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// EXPECT_FATAL_FAILURE_ON_ALL_THREADS does the same but for all threads.
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//
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// The verification of the assertion is done correctly even when the statement
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// throws an exception or aborts the current function.
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//
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// Known restrictions:
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// - 'statement' cannot reference local non-static variables or
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// non-static members of the current object.
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// - 'statement' cannot return a value.
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// - You cannot stream a failure message to this macro.
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//
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// Note that even though the implementations of the following two
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// macros are much alike, we cannot refactor them to use a common
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// helper macro, due to some peculiarity in how the preprocessor
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// works. The AcceptsMacroThatExpandsToUnprotectedComma test in
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// gtest_unittest.cc will fail to compile if we do that.
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#define EXPECT_FATAL_FAILURE(statement, substr) \
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do { \
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class GTestExpectFatalFailureHelper {\
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public:\
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static void Execute() { statement; }\
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};\
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::testing::TestPartResultArray gtest_failures;\
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::testing::internal::SingleFailureChecker gtest_checker(\
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>est_failures, ::testing::TestPartResult::kFatalFailure, (substr));\
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{\
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::testing::ScopedFakeTestPartResultReporter gtest_reporter(\
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::testing::ScopedFakeTestPartResultReporter:: \
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INTERCEPT_ONLY_CURRENT_THREAD, >est_failures);\
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GTestExpectFatalFailureHelper::Execute();\
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}\
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} while (::testing::internal::AlwaysFalse())
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#define EXPECT_FATAL_FAILURE_ON_ALL_THREADS(statement, substr) \
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do { \
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class GTestExpectFatalFailureHelper {\
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public:\
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static void Execute() { statement; }\
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};\
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::testing::TestPartResultArray gtest_failures;\
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::testing::internal::SingleFailureChecker gtest_checker(\
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>est_failures, ::testing::TestPartResult::kFatalFailure, (substr));\
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{\
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::testing::ScopedFakeTestPartResultReporter gtest_reporter(\
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::testing::ScopedFakeTestPartResultReporter:: \
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INTERCEPT_ALL_THREADS, >est_failures);\
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GTestExpectFatalFailureHelper::Execute();\
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}\
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} while (::testing::internal::AlwaysFalse())
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// A macro for testing Google Test assertions or code that's expected to
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// generate Google Test non-fatal failures. It asserts that the given
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// statement will cause exactly one non-fatal Google Test failure with 'substr'
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// being part of the failure message.
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//
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// There are two different versions of this macro. EXPECT_NONFATAL_FAILURE only
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// affects and considers failures generated in the current thread and
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// EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS does the same but for all threads.
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//
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// 'statement' is allowed to reference local variables and members of
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// the current object.
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//
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// The verification of the assertion is done correctly even when the statement
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// throws an exception or aborts the current function.
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//
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// Known restrictions:
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// - You cannot stream a failure message to this macro.
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//
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// Note that even though the implementations of the following two
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// macros are much alike, we cannot refactor them to use a common
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// helper macro, due to some peculiarity in how the preprocessor
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// works. If we do that, the code won't compile when the user gives
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// EXPECT_NONFATAL_FAILURE() a statement that contains a macro that
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// expands to code containing an unprotected comma. The
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// AcceptsMacroThatExpandsToUnprotectedComma test in gtest_unittest.cc
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// catches that.
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//
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// For the same reason, we have to write
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// if (::testing::internal::AlwaysTrue()) { statement; }
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// instead of
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// GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement)
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// to avoid an MSVC warning on unreachable code.
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#define EXPECT_NONFATAL_FAILURE(statement, substr) \
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do {\
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::testing::TestPartResultArray gtest_failures;\
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::testing::internal::SingleFailureChecker gtest_checker(\
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>est_failures, ::testing::TestPartResult::kNonFatalFailure, \
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(substr));\
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{\
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::testing::ScopedFakeTestPartResultReporter gtest_reporter(\
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::testing::ScopedFakeTestPartResultReporter:: \
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INTERCEPT_ONLY_CURRENT_THREAD, >est_failures);\
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if (::testing::internal::AlwaysTrue()) { statement; }\
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}\
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} while (::testing::internal::AlwaysFalse())
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#define EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS(statement, substr) \
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do {\
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::testing::TestPartResultArray gtest_failures;\
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::testing::internal::SingleFailureChecker gtest_checker(\
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>est_failures, ::testing::TestPartResult::kNonFatalFailure, \
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(substr));\
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{\
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::testing::ScopedFakeTestPartResultReporter gtest_reporter(\
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::testing::ScopedFakeTestPartResultReporter::INTERCEPT_ALL_THREADS,\
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>est_failures);\
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if (::testing::internal::AlwaysTrue()) { statement; }\
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}\
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} while (::testing::internal::AlwaysFalse())
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#endif // GTEST_INCLUDE_GTEST_GTEST_SPI_H_
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