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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)
 
 // Google Mock - a framework for writing C++ mock classes.
 //
 // This file tests the internal utilities.
 
 #include "gmock/internal/gmock-internal-utils.h"
 #include <stdlib.h>
 #include <map>
 #include <memory>
 #include <string>
 #include <sstream>
 #include <vector>
 #include "gmock/gmock.h"
 #include "gmock/internal/gmock-port.h"
 #include "gtest/gtest.h"
 #include "gtest/gtest-spi.h"
 
 // Indicates that this translation unit is part of Google Test's
 // implementation.  It must come before gtest-internal-inl.h is
 // included, or there will be a compiler error.  This trick is to
 // prevent a user from accidentally including gtest-internal-inl.h in
 // his code.
 #define GTEST_IMPLEMENTATION_ 1
 #include "src/gtest-internal-inl.h"
 #undef GTEST_IMPLEMENTATION_
 
 #if GTEST_OS_CYGWIN
 # include <sys/types.h>  // For ssize_t. NOLINT
 #endif
 
 class ProtocolMessage;
 
 namespace proto2 {
 class Message;
 }  // namespace proto2
 
 namespace testing {
 namespace internal {
 
 namespace {
 
 TEST(ConvertIdentifierNameToWordsTest, WorksWhenNameContainsNoWord) {
   EXPECT_EQ("", ConvertIdentifierNameToWords(""));
   EXPECT_EQ("", ConvertIdentifierNameToWords("_"));
   EXPECT_EQ("", ConvertIdentifierNameToWords("__"));
 }
 
 TEST(ConvertIdentifierNameToWordsTest, WorksWhenNameContainsDigits) {
   EXPECT_EQ("1", ConvertIdentifierNameToWords("_1"));
   EXPECT_EQ("2", ConvertIdentifierNameToWords("2_"));
   EXPECT_EQ("34", ConvertIdentifierNameToWords("_34_"));
   EXPECT_EQ("34 56", ConvertIdentifierNameToWords("_34_56"));
 }
 
 TEST(ConvertIdentifierNameToWordsTest, WorksWhenNameContainsCamelCaseWords) {
   EXPECT_EQ("a big word", ConvertIdentifierNameToWords("ABigWord"));
   EXPECT_EQ("foo bar", ConvertIdentifierNameToWords("FooBar"));
   EXPECT_EQ("foo", ConvertIdentifierNameToWords("Foo_"));
   EXPECT_EQ("foo bar", ConvertIdentifierNameToWords("_Foo_Bar_"));
   EXPECT_EQ("foo and bar", ConvertIdentifierNameToWords("_Foo__And_Bar"));
 }
 
 TEST(ConvertIdentifierNameToWordsTest, WorksWhenNameContains_SeparatedWords) {
   EXPECT_EQ("foo bar", ConvertIdentifierNameToWords("foo_bar"));
   EXPECT_EQ("foo", ConvertIdentifierNameToWords("_foo_"));
   EXPECT_EQ("foo bar", ConvertIdentifierNameToWords("_foo_bar_"));
   EXPECT_EQ("foo and bar", ConvertIdentifierNameToWords("_foo__and_bar"));
 }
 
 TEST(ConvertIdentifierNameToWordsTest, WorksWhenNameIsMixture) {
   EXPECT_EQ("foo bar 123", ConvertIdentifierNameToWords("Foo_bar123"));
   EXPECT_EQ("chapter 11 section 1",
             ConvertIdentifierNameToWords("_Chapter11Section_1_"));
 }
 
 TEST(PointeeOfTest, WorksForSmartPointers) {
   CompileAssertTypesEqual<const char,
       PointeeOf<internal::linked_ptr<const char> >::type>();
 #if GTEST_HAS_STD_UNIQUE_PTR_
   CompileAssertTypesEqual<int, PointeeOf<std::unique_ptr<int> >::type>();
 #endif  // GTEST_HAS_STD_UNIQUE_PTR_
 #if GTEST_HAS_STD_SHARED_PTR_
   CompileAssertTypesEqual<std::string,
                           PointeeOf<std::shared_ptr<std::string> >::type>();
 #endif  // GTEST_HAS_STD_SHARED_PTR_
 }
 
 TEST(PointeeOfTest, WorksForRawPointers) {
   CompileAssertTypesEqual<int, PointeeOf<int*>::type>();
   CompileAssertTypesEqual<const char, PointeeOf<const char*>::type>();
   CompileAssertTypesEqual<void, PointeeOf<void*>::type>();
 }
 
 TEST(GetRawPointerTest, WorksForSmartPointers) {
 #if GTEST_HAS_STD_UNIQUE_PTR_
   const char* const raw_p1 = new const char('a');  // NOLINT
   const std::unique_ptr<const char> p1(raw_p1);
   EXPECT_EQ(raw_p1, GetRawPointer(p1));
 #endif  // GTEST_HAS_STD_UNIQUE_PTR_
 #if GTEST_HAS_STD_SHARED_PTR_
   double* const raw_p2 = new double(2.5);  // NOLINT
   const std::shared_ptr<double> p2(raw_p2);
   EXPECT_EQ(raw_p2, GetRawPointer(p2));
 #endif  // GTEST_HAS_STD_SHARED_PTR_
 
   const char* const raw_p4 = new const char('a');  // NOLINT
   const internal::linked_ptr<const char> p4(raw_p4);
   EXPECT_EQ(raw_p4, GetRawPointer(p4));
 }
 
 TEST(GetRawPointerTest, WorksForRawPointers) {
   int* p = NULL;
   // Don't use EXPECT_EQ as no NULL-testing magic on Symbian.
   EXPECT_TRUE(NULL == GetRawPointer(p));
   int n = 1;
   EXPECT_EQ(&n, GetRawPointer(&n));
 }
 
 // Tests KindOf<T>.
 
 class Base {};
 class Derived : public Base {};
 
 TEST(KindOfTest, Bool) {
   EXPECT_EQ(kBool, GMOCK_KIND_OF_(bool));  // NOLINT
 }
 
 TEST(KindOfTest, Integer) {
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(char));  // NOLINT
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(signed char));  // NOLINT
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(unsigned char));  // NOLINT
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(short));  // NOLINT
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(unsigned short));  // NOLINT
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(int));  // NOLINT
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(unsigned int));  // NOLINT
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(long));  // NOLINT
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(unsigned long));  // NOLINT
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(wchar_t));  // NOLINT
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(Int64));  // NOLINT
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(UInt64));  // NOLINT
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(size_t));  // NOLINT
 #if GTEST_OS_LINUX || GTEST_OS_MAC || GTEST_OS_CYGWIN
   // ssize_t is not defined on Windows and possibly some other OSes.
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(ssize_t));  // NOLINT
 #endif
 }
 
 TEST(KindOfTest, FloatingPoint) {
   EXPECT_EQ(kFloatingPoint, GMOCK_KIND_OF_(float));  // NOLINT
   EXPECT_EQ(kFloatingPoint, GMOCK_KIND_OF_(double));  // NOLINT
   EXPECT_EQ(kFloatingPoint, GMOCK_KIND_OF_(long double));  // NOLINT
 }
 
 TEST(KindOfTest, Other) {
   EXPECT_EQ(kOther, GMOCK_KIND_OF_(void*));  // NOLINT
   EXPECT_EQ(kOther, GMOCK_KIND_OF_(char**));  // NOLINT
   EXPECT_EQ(kOther, GMOCK_KIND_OF_(Base));  // NOLINT
 }
 
 // Tests LosslessArithmeticConvertible<T, U>.
 
 TEST(LosslessArithmeticConvertibleTest, BoolToBool) {
   EXPECT_TRUE((LosslessArithmeticConvertible<bool, bool>::value));
 }
 
 TEST(LosslessArithmeticConvertibleTest, BoolToInteger) {
   EXPECT_TRUE((LosslessArithmeticConvertible<bool, char>::value));
   EXPECT_TRUE((LosslessArithmeticConvertible<bool, int>::value));
   EXPECT_TRUE(
       (LosslessArithmeticConvertible<bool, unsigned long>::value));  // NOLINT
 }
 
 TEST(LosslessArithmeticConvertibleTest, BoolToFloatingPoint) {
   EXPECT_TRUE((LosslessArithmeticConvertible<bool, float>::value));
   EXPECT_TRUE((LosslessArithmeticConvertible<bool, double>::value));
 }
 
 TEST(LosslessArithmeticConvertibleTest, IntegerToBool) {
   EXPECT_FALSE((LosslessArithmeticConvertible<unsigned char, bool>::value));
   EXPECT_FALSE((LosslessArithmeticConvertible<int, bool>::value));
 }
 
 TEST(LosslessArithmeticConvertibleTest, IntegerToInteger) {
   // Unsigned => larger signed is fine.
   EXPECT_TRUE((LosslessArithmeticConvertible<unsigned char, int>::value));
 
   // Unsigned => larger unsigned is fine.
   EXPECT_TRUE(
       (LosslessArithmeticConvertible<unsigned short, UInt64>::value)); // NOLINT
 
   // Signed => unsigned is not fine.
   EXPECT_FALSE((LosslessArithmeticConvertible<short, UInt64>::value)); // NOLINT
   EXPECT_FALSE((LosslessArithmeticConvertible<
       signed char, unsigned int>::value));  // NOLINT
 
   // Same size and same signedness: fine too.
   EXPECT_TRUE((LosslessArithmeticConvertible<
                unsigned char, unsigned char>::value));
   EXPECT_TRUE((LosslessArithmeticConvertible<int, int>::value));
   EXPECT_TRUE((LosslessArithmeticConvertible<wchar_t, wchar_t>::value));
   EXPECT_TRUE((LosslessArithmeticConvertible<
                unsigned long, unsigned long>::value));  // NOLINT
 
   // Same size, different signedness: not fine.
   EXPECT_FALSE((LosslessArithmeticConvertible<
                 unsigned char, signed char>::value));
   EXPECT_FALSE((LosslessArithmeticConvertible<int, unsigned int>::value));
   EXPECT_FALSE((LosslessArithmeticConvertible<UInt64, Int64>::value));
 
   // Larger size => smaller size is not fine.
   EXPECT_FALSE((LosslessArithmeticConvertible<long, char>::value));  // NOLINT
   EXPECT_FALSE((LosslessArithmeticConvertible<int, signed char>::value));
   EXPECT_FALSE((LosslessArithmeticConvertible<Int64, unsigned int>::value));
 }
 
 TEST(LosslessArithmeticConvertibleTest, IntegerToFloatingPoint) {
   // Integers cannot be losslessly converted to floating-points, as
   // the format of the latter is implementation-defined.
   EXPECT_FALSE((LosslessArithmeticConvertible<char, float>::value));
   EXPECT_FALSE((LosslessArithmeticConvertible<int, double>::value));
   EXPECT_FALSE((LosslessArithmeticConvertible<
                 short, long double>::value));  // NOLINT
 }
 
 TEST(LosslessArithmeticConvertibleTest, FloatingPointToBool) {
   EXPECT_FALSE((LosslessArithmeticConvertible<float, bool>::value));
   EXPECT_FALSE((LosslessArithmeticConvertible<double, bool>::value));
 }
 
 TEST(LosslessArithmeticConvertibleTest, FloatingPointToInteger) {
   EXPECT_FALSE((LosslessArithmeticConvertible<float, long>::value));  // NOLINT
   EXPECT_FALSE((LosslessArithmeticConvertible<double, Int64>::value));
   EXPECT_FALSE((LosslessArithmeticConvertible<long double, int>::value));
 }
 
 TEST(LosslessArithmeticConvertibleTest, FloatingPointToFloatingPoint) {
   // Smaller size => larger size is fine.
   EXPECT_TRUE((LosslessArithmeticConvertible<float, double>::value));
   EXPECT_TRUE((LosslessArithmeticConvertible<float, long double>::value));
   EXPECT_TRUE((LosslessArithmeticConvertible<double, long double>::value));
 
   // Same size: fine.
   EXPECT_TRUE((LosslessArithmeticConvertible<float, float>::value));
   EXPECT_TRUE((LosslessArithmeticConvertible<double, double>::value));
 
   // Larger size => smaller size is not fine.
   EXPECT_FALSE((LosslessArithmeticConvertible<double, float>::value));
   GTEST_INTENTIONAL_CONST_COND_PUSH_()
   if (sizeof(double) == sizeof(long double)) {  // NOLINT
   GTEST_INTENTIONAL_CONST_COND_POP_()
     // In some implementations (e.g. MSVC), double and long double
     // have the same size.
     EXPECT_TRUE((LosslessArithmeticConvertible<long double, double>::value));
   } else {
     EXPECT_FALSE((LosslessArithmeticConvertible<long double, double>::value));
   }
 }
 
 // Tests the TupleMatches() template function.
 
 TEST(TupleMatchesTest, WorksForSize0) {
   tuple<> matchers;
   tuple<> values;
 
   EXPECT_TRUE(TupleMatches(matchers, values));
 }
 
 TEST(TupleMatchesTest, WorksForSize1) {
   tuple<Matcher<int> > matchers(Eq(1));
   tuple<int> values1(1),
       values2(2);
 
   EXPECT_TRUE(TupleMatches(matchers, values1));
   EXPECT_FALSE(TupleMatches(matchers, values2));
 }
 
 TEST(TupleMatchesTest, WorksForSize2) {
   tuple<Matcher<int>, Matcher<char> > matchers(Eq(1), Eq('a'));
   tuple<int, char> values1(1, 'a'),
       values2(1, 'b'),
       values3(2, 'a'),
       values4(2, 'b');
 
   EXPECT_TRUE(TupleMatches(matchers, values1));
   EXPECT_FALSE(TupleMatches(matchers, values2));
   EXPECT_FALSE(TupleMatches(matchers, values3));
   EXPECT_FALSE(TupleMatches(matchers, values4));
 }
 
 TEST(TupleMatchesTest, WorksForSize5) {
   tuple<Matcher<int>, Matcher<char>, Matcher<bool>, Matcher<long>,  // NOLINT
       Matcher<string> >
       matchers(Eq(1), Eq('a'), Eq(true), Eq(2L), Eq("hi"));
   tuple<int, char, bool, long, string>  // NOLINT
       values1(1, 'a', true, 2L, "hi"),
       values2(1, 'a', true, 2L, "hello"),
       values3(2, 'a', true, 2L, "hi");
 
   EXPECT_TRUE(TupleMatches(matchers, values1));
   EXPECT_FALSE(TupleMatches(matchers, values2));
   EXPECT_FALSE(TupleMatches(matchers, values3));
 }
 
 // Tests that Assert(true, ...) succeeds.
 TEST(AssertTest, SucceedsOnTrue) {
   Assert(true, __FILE__, __LINE__, "This should succeed.");
   Assert(true, __FILE__, __LINE__);  // This should succeed too.
 }
 
 // Tests that Assert(false, ...) generates a fatal failure.
 TEST(AssertTest, FailsFatallyOnFalse) {
   EXPECT_DEATH_IF_SUPPORTED({
     Assert(false, __FILE__, __LINE__, "This should fail.");
   }, "");
 
   EXPECT_DEATH_IF_SUPPORTED({
     Assert(false, __FILE__, __LINE__);
   }, "");
 }
 
 // Tests that Expect(true, ...) succeeds.
 TEST(ExpectTest, SucceedsOnTrue) {
   Expect(true, __FILE__, __LINE__, "This should succeed.");
   Expect(true, __FILE__, __LINE__);  // This should succeed too.
 }
 
 // Tests that Expect(false, ...) generates a non-fatal failure.
 TEST(ExpectTest, FailsNonfatallyOnFalse) {
   EXPECT_NONFATAL_FAILURE({  // NOLINT
     Expect(false, __FILE__, __LINE__, "This should fail.");
   }, "This should fail");
 
   EXPECT_NONFATAL_FAILURE({  // NOLINT
     Expect(false, __FILE__, __LINE__);
   }, "Expectation failed");
 }
 
 // Tests LogIsVisible().
 
 class LogIsVisibleTest : public ::testing::Test {
  protected:
   virtual void SetUp() {
     original_verbose_ = GMOCK_FLAG(verbose);
   }
 
   virtual void TearDown() { GMOCK_FLAG(verbose) = original_verbose_; }
 
   string original_verbose_;
 };
 
 TEST_F(LogIsVisibleTest, AlwaysReturnsTrueIfVerbosityIsInfo) {
   GMOCK_FLAG(verbose) = kInfoVerbosity;
   EXPECT_TRUE(LogIsVisible(kInfo));
   EXPECT_TRUE(LogIsVisible(kWarning));
 }
 
 TEST_F(LogIsVisibleTest, AlwaysReturnsFalseIfVerbosityIsError) {
   GMOCK_FLAG(verbose) = kErrorVerbosity;
   EXPECT_FALSE(LogIsVisible(kInfo));
   EXPECT_FALSE(LogIsVisible(kWarning));
 }
 
 TEST_F(LogIsVisibleTest, WorksWhenVerbosityIsWarning) {
   GMOCK_FLAG(verbose) = kWarningVerbosity;
   EXPECT_FALSE(LogIsVisible(kInfo));
   EXPECT_TRUE(LogIsVisible(kWarning));
 }
 
 #if GTEST_HAS_STREAM_REDIRECTION
 
 // Tests the Log() function.
 
 // Verifies that Log() behaves correctly for the given verbosity level
 // and log severity.
 void TestLogWithSeverity(const string& verbosity, LogSeverity severity,
                          bool should_print) {
   const string old_flag = GMOCK_FLAG(verbose);
   GMOCK_FLAG(verbose) = verbosity;
   CaptureStdout();
   Log(severity, "Test log.\n", 0);
   if (should_print) {
     EXPECT_THAT(GetCapturedStdout().c_str(),
                 ContainsRegex(
                     severity == kWarning ?
                     "^\nGMOCK WARNING:\nTest log\\.\nStack trace:\n" :
                     "^\nTest log\\.\nStack trace:\n"));
   } else {
     EXPECT_STREQ("", GetCapturedStdout().c_str());
   }
   GMOCK_FLAG(verbose) = old_flag;
 }
 
 // Tests that when the stack_frames_to_skip parameter is negative,
 // Log() doesn't include the stack trace in the output.
 TEST(LogTest, NoStackTraceWhenStackFramesToSkipIsNegative) {
   const string saved_flag = GMOCK_FLAG(verbose);
   GMOCK_FLAG(verbose) = kInfoVerbosity;
   CaptureStdout();
   Log(kInfo, "Test log.\n", -1);
   EXPECT_STREQ("\nTest log.\n", GetCapturedStdout().c_str());
   GMOCK_FLAG(verbose) = saved_flag;
 }
 
 struct MockStackTraceGetter : testing::internal::OsStackTraceGetterInterface {
   virtual string CurrentStackTrace(int max_depth, int skip_count) {
     return (testing::Message() << max_depth << "::" << skip_count << "\n")
         .GetString();
   }
   virtual void UponLeavingGTest() {}
 };
 
 // Tests that in opt mode, a positive stack_frames_to_skip argument is
 // treated as 0.
 TEST(LogTest, NoSkippingStackFrameInOptMode) {
   MockStackTraceGetter* mock_os_stack_trace_getter = new MockStackTraceGetter;
   GetUnitTestImpl()->set_os_stack_trace_getter(mock_os_stack_trace_getter);
 
   CaptureStdout();
   Log(kWarning, "Test log.\n", 100);
   const string log = GetCapturedStdout();
 
   string expected_trace =
       (testing::Message() << GTEST_FLAG(stack_trace_depth) << "::").GetString();
   string expected_message =
       "\nGMOCK WARNING:\n"
       "Test log.\n"
       "Stack trace:\n" +
       expected_trace;
   EXPECT_THAT(log, HasSubstr(expected_message));
   int skip_count = atoi(log.substr(expected_message.size()).c_str());
 
 # if defined(NDEBUG)
   // In opt mode, no stack frame should be skipped.
   const int expected_skip_count = 0;
 # else
   // In dbg mode, the stack frames should be skipped.
   const int expected_skip_count = 100;
 # endif
 
   // Note that each inner implementation layer will +1 the number to remove
   // itself from the trace. This means that the value is a little higher than
   // expected, but close enough.
   EXPECT_THAT(skip_count,
               AllOf(Ge(expected_skip_count), Le(expected_skip_count + 10)));
 
   // Restores the default OS stack trace getter.
   GetUnitTestImpl()->set_os_stack_trace_getter(NULL);
 }
 
 // Tests that all logs are printed when the value of the
 // --gmock_verbose flag is "info".
 TEST(LogTest, AllLogsArePrintedWhenVerbosityIsInfo) {
   TestLogWithSeverity(kInfoVerbosity, kInfo, true);
   TestLogWithSeverity(kInfoVerbosity, kWarning, true);
 }
 
 // Tests that only warnings are printed when the value of the
 // --gmock_verbose flag is "warning".
 TEST(LogTest, OnlyWarningsArePrintedWhenVerbosityIsWarning) {
   TestLogWithSeverity(kWarningVerbosity, kInfo, false);
   TestLogWithSeverity(kWarningVerbosity, kWarning, true);
 }
 
 // Tests that no logs are printed when the value of the
 // --gmock_verbose flag is "error".
 TEST(LogTest, NoLogsArePrintedWhenVerbosityIsError) {
   TestLogWithSeverity(kErrorVerbosity, kInfo, false);
   TestLogWithSeverity(kErrorVerbosity, kWarning, false);
 }
 
 // Tests that only warnings are printed when the value of the
 // --gmock_verbose flag is invalid.
 TEST(LogTest, OnlyWarningsArePrintedWhenVerbosityIsInvalid) {
   TestLogWithSeverity("invalid", kInfo, false);
   TestLogWithSeverity("invalid", kWarning, true);
 }
 
 #endif  // GTEST_HAS_STREAM_REDIRECTION
 
 TEST(TypeTraitsTest, true_type) {
   EXPECT_TRUE(true_type::value);
 }
 
 TEST(TypeTraitsTest, false_type) {
   EXPECT_FALSE(false_type::value);
 }
 
 TEST(TypeTraitsTest, is_reference) {
   EXPECT_FALSE(is_reference<int>::value);
   EXPECT_FALSE(is_reference<char*>::value);
   EXPECT_TRUE(is_reference<const int&>::value);
 }
 
 TEST(TypeTraitsTest, is_pointer) {
   EXPECT_FALSE(is_pointer<int>::value);
   EXPECT_FALSE(is_pointer<char&>::value);
   EXPECT_TRUE(is_pointer<const int*>::value);
 }
 
 TEST(TypeTraitsTest, type_equals) {
   EXPECT_FALSE((type_equals<int, const int>::value));
   EXPECT_FALSE((type_equals<int, int&>::value));
   EXPECT_FALSE((type_equals<int, double>::value));
   EXPECT_TRUE((type_equals<char, char>::value));
 }
 
 TEST(TypeTraitsTest, remove_reference) {
   EXPECT_TRUE((type_equals<char, remove_reference<char&>::type>::value));
   EXPECT_TRUE((type_equals<const int,
                remove_reference<const int&>::type>::value));
   EXPECT_TRUE((type_equals<int, remove_reference<int>::type>::value));
   EXPECT_TRUE((type_equals<double*, remove_reference<double*>::type>::value));
 }
 
 #if GTEST_HAS_STREAM_REDIRECTION
 
 // Verifies that Log() behaves correctly for the given verbosity level
 // and log severity.
 std::string GrabOutput(void(*logger)(), const char* verbosity) {
   const string saved_flag = GMOCK_FLAG(verbose);
   GMOCK_FLAG(verbose) = verbosity;
   CaptureStdout();
   logger();
   GMOCK_FLAG(verbose) = saved_flag;
   return GetCapturedStdout();
 }
 
 class DummyMock {
  public:
   MOCK_METHOD0(TestMethod, void());
   MOCK_METHOD1(TestMethodArg, void(int dummy));
 };
 
 void ExpectCallLogger() {
   DummyMock mock;
   EXPECT_CALL(mock, TestMethod());
   mock.TestMethod();
 };
 
 // Verifies that EXPECT_CALL logs if the --gmock_verbose flag is set to "info".
 TEST(ExpectCallTest, LogsWhenVerbosityIsInfo) {
   EXPECT_THAT(std::string(GrabOutput(ExpectCallLogger, kInfoVerbosity)),
               HasSubstr("EXPECT_CALL(mock, TestMethod())"));
 }
 
 // Verifies that EXPECT_CALL doesn't log
 // if the --gmock_verbose flag is set to "warning".
 TEST(ExpectCallTest, DoesNotLogWhenVerbosityIsWarning) {
   EXPECT_STREQ("", GrabOutput(ExpectCallLogger, kWarningVerbosity).c_str());
 }
 
 // Verifies that EXPECT_CALL doesn't log
 // if the --gmock_verbose flag is set to "error".
 TEST(ExpectCallTest,  DoesNotLogWhenVerbosityIsError) {
   EXPECT_STREQ("", GrabOutput(ExpectCallLogger, kErrorVerbosity).c_str());
 }
 
 void OnCallLogger() {
   DummyMock mock;
   ON_CALL(mock, TestMethod());
 };
 
 // Verifies that ON_CALL logs if the --gmock_verbose flag is set to "info".
 TEST(OnCallTest, LogsWhenVerbosityIsInfo) {
   EXPECT_THAT(std::string(GrabOutput(OnCallLogger, kInfoVerbosity)),
               HasSubstr("ON_CALL(mock, TestMethod())"));
 }
 
 // Verifies that ON_CALL doesn't log
 // if the --gmock_verbose flag is set to "warning".
 TEST(OnCallTest, DoesNotLogWhenVerbosityIsWarning) {
   EXPECT_STREQ("", GrabOutput(OnCallLogger, kWarningVerbosity).c_str());
 }
 
 // Verifies that ON_CALL doesn't log if
 // the --gmock_verbose flag is set to "error".
 TEST(OnCallTest, DoesNotLogWhenVerbosityIsError) {
   EXPECT_STREQ("", GrabOutput(OnCallLogger, kErrorVerbosity).c_str());
 }
 
 void OnCallAnyArgumentLogger() {
   DummyMock mock;
   ON_CALL(mock, TestMethodArg(_));
 }
 
 // Verifies that ON_CALL prints provided _ argument.
 TEST(OnCallTest, LogsAnythingArgument) {
   EXPECT_THAT(std::string(GrabOutput(OnCallAnyArgumentLogger, kInfoVerbosity)),
               HasSubstr("ON_CALL(mock, TestMethodArg(_)"));
 }
 
 #endif  // GTEST_HAS_STREAM_REDIRECTION
 
 // Tests StlContainerView.
 
 TEST(StlContainerViewTest, WorksForStlContainer) {
   StaticAssertTypeEq<std::vector<int>,
       StlContainerView<std::vector<int> >::type>();
   StaticAssertTypeEq<const std::vector<double>&,
       StlContainerView<std::vector<double> >::const_reference>();
 
   typedef std::vector<char> Chars;
   Chars v1;
   const Chars& v2(StlContainerView<Chars>::ConstReference(v1));
   EXPECT_EQ(&v1, &v2);
 
   v1.push_back('a');
   Chars v3 = StlContainerView<Chars>::Copy(v1);
   EXPECT_THAT(v3, Eq(v3));
 }
 
 TEST(StlContainerViewTest, WorksForStaticNativeArray) {
   StaticAssertTypeEq<NativeArray<int>,
       StlContainerView<int[3]>::type>();
   StaticAssertTypeEq<NativeArray<double>,
       StlContainerView<const double[4]>::type>();
   StaticAssertTypeEq<NativeArray<char[3]>,
       StlContainerView<const char[2][3]>::type>();
 
   StaticAssertTypeEq<const NativeArray<int>,
       StlContainerView<int[2]>::const_reference>();
 
   int a1[3] = { 0, 1, 2 };
   NativeArray<int> a2 = StlContainerView<int[3]>::ConstReference(a1);
   EXPECT_EQ(3U, a2.size());
   EXPECT_EQ(a1, a2.begin());
 
   const NativeArray<int> a3 = StlContainerView<int[3]>::Copy(a1);
   ASSERT_EQ(3U, a3.size());
   EXPECT_EQ(0, a3.begin()[0]);
   EXPECT_EQ(1, a3.begin()[1]);
   EXPECT_EQ(2, a3.begin()[2]);
 
   // Makes sure a1 and a3 aren't aliases.
   a1[0] = 3;
   EXPECT_EQ(0, a3.begin()[0]);
 }
 
 TEST(StlContainerViewTest, WorksForDynamicNativeArray) {
   StaticAssertTypeEq<NativeArray<int>,
       StlContainerView<tuple<const int*, size_t> >::type>();
   StaticAssertTypeEq<NativeArray<double>,
       StlContainerView<tuple<linked_ptr<double>, int> >::type>();
 
   StaticAssertTypeEq<const NativeArray<int>,
       StlContainerView<tuple<const int*, int> >::const_reference>();
 
   int a1[3] = { 0, 1, 2 };
   const int* const p1 = a1;
   NativeArray<int> a2 = StlContainerView<tuple<const int*, int> >::
       ConstReference(make_tuple(p1, 3));
   EXPECT_EQ(3U, a2.size());
   EXPECT_EQ(a1, a2.begin());
 
   const NativeArray<int> a3 = StlContainerView<tuple<int*, size_t> >::
       Copy(make_tuple(static_cast<int*>(a1), 3));
   ASSERT_EQ(3U, a3.size());
   EXPECT_EQ(0, a3.begin()[0]);
   EXPECT_EQ(1, a3.begin()[1]);
   EXPECT_EQ(2, a3.begin()[2]);
 
   // Makes sure a1 and a3 aren't aliases.
   a1[0] = 3;
   EXPECT_EQ(0, a3.begin()[0]);
 }
 
 }  // namespace
 }  // namespace internal
 }  // namespace testing

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