llvm/third-party/unittest/googletest/include/gtest/internal/gtest-internal.h

// 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.

// The Google C++ Testing and Mocking Framework (Google Test)
//
// This header file declares functions and macros used internally by
// Google Test.  They are subject to change without notice.

// IWYU pragma: private, include "gtest/gtest.h"
// IWYU pragma: friend gtest/.*
// IWYU pragma: friend gmock/.*

#ifndef GOOGLETEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_
#define GOOGLETEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_

#include "gtest/internal/gtest-port.h"

#ifdef GTEST_OS_LINUX
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#endif  // GTEST_OS_LINUX

#if GTEST_HAS_EXCEPTIONS
#include <stdexcept>
#endif

#include <ctype.h>
#include <float.h>
#include <string.h>

#include <cstdint>
#include <functional>
#include <iomanip>
#include <limits>
#include <map>
#include <set>
#include <string>
#include <type_traits>
#include <utility>
#include <vector>

#include "gtest/gtest-message.h"
#include "gtest/internal/gtest-filepath.h"
#include "gtest/internal/gtest-string.h"
#include "gtest/internal/gtest-type-util.h"

// Due to C++ preprocessor weirdness, we need double indirection to
// concatenate two tokens when one of them is __LINE__.  Writing
//
//   foo ## __LINE__
//
// will result in the token foo__LINE__, instead of foo followed by
// the current line number.  For more details, see
// http://www.parashift.com/c++-faq-lite/misc-technical-issues.html#faq-39.6
#define GTEST_CONCAT_TOKEN_(foo, bar) …
#define GTEST_CONCAT_TOKEN_IMPL_(foo, bar) …

// Stringifies its argument.
// Work around a bug in visual studio which doesn't accept code like this:
//
//   #define GTEST_STRINGIFY_(name) #name
//   #define MACRO(a, b, c) ... GTEST_STRINGIFY_(a) ...
//   MACRO(, x, y)
//
// Complaining about the argument to GTEST_STRINGIFY_ being empty.
// This is allowed by the spec.
#define GTEST_STRINGIFY_HELPER_(name, ...) …
#define GTEST_STRINGIFY_(...) …

namespace proto2 {
class MessageLite;
}

namespace testing {

// Forward declarations.

class AssertionResult;  // Result of an assertion.
class Message;          // Represents a failure message.
class Test;             // Represents a test.
class TestInfo;         // Information about a test.
class TestPartResult;   // Result of a test part.
class UnitTest;         // A collection of test suites.

template <typename T>
::std::string PrintToString(const T& value);

namespace internal {

struct TraceInfo;    // Information about a trace point.
class TestInfoImpl;  // Opaque implementation of TestInfo
class UnitTestImpl;  // Opaque implementation of UnitTest

// The text used in failure messages to indicate the start of the
// stack trace.
GTEST_API_ extern const char kStackTraceMarker[];

// An IgnoredValue object can be implicitly constructed from ANY value.
class IgnoredValue { … };

// Appends the user-supplied message to the Google-Test-generated message.
GTEST_API_ std::string AppendUserMessage(const std::string& gtest_msg,
                                         const Message& user_msg);

#if GTEST_HAS_EXCEPTIONS

GTEST_DISABLE_MSC_WARNINGS_PUSH_(
    4275 /* an exported class was derived from a class that was not exported */)

// This exception is thrown by (and only by) a failed Google Test
// assertion when GTEST_FLAG(throw_on_failure) is true (if exceptions
// are enabled).  We derive it from std::runtime_error, which is for
// errors presumably detectable only at run time.  Since
// std::runtime_error inherits from std::exception, many testing
// frameworks know how to extract and print the message inside it.
class GTEST_API_ GoogleTestFailureException : public ::std::runtime_error {
 public:
  explicit GoogleTestFailureException(const TestPartResult& failure);
};

GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4275

#endif  // GTEST_HAS_EXCEPTIONS

namespace edit_distance {
// Returns the optimal edits to go from 'left' to 'right'.
// All edits cost the same, with replace having lower priority than
// add/remove.
// Simple implementation of the Wagner-Fischer algorithm.
// See http://en.wikipedia.org/wiki/Wagner-Fischer_algorithm
enum EditType { … };
GTEST_API_ std::vector<EditType> CalculateOptimalEdits(
    const std::vector<size_t>& left, const std::vector<size_t>& right);

// Same as above, but the input is represented as strings.
GTEST_API_ std::vector<EditType> CalculateOptimalEdits(
    const std::vector<std::string>& left,
    const std::vector<std::string>& right);

// Create a diff of the input strings in Unified diff format.
GTEST_API_ std::string CreateUnifiedDiff(const std::vector<std::string>& left,
                                         const std::vector<std::string>& right,
                                         size_t context = 2);

}  // namespace edit_distance

// Constructs and returns the message for an equality assertion
// (e.g. ASSERT_EQ, EXPECT_STREQ, etc) failure.
//
// The first four parameters are the expressions used in the assertion
// and their values, as strings.  For example, for ASSERT_EQ(foo, bar)
// where foo is 5 and bar is 6, we have:
//
//   expected_expression: "foo"
//   actual_expression:   "bar"
//   expected_value:      "5"
//   actual_value:        "6"
//
// The ignoring_case parameter is true if and only if the assertion is a
// *_STRCASEEQ*.  When it's true, the string " (ignoring case)" will
// be inserted into the message.
GTEST_API_ AssertionResult EqFailure(const char* expected_expression,
                                     const char* actual_expression,
                                     const std::string& expected_value,
                                     const std::string& actual_value,
                                     bool ignoring_case);

// Constructs a failure message for Boolean assertions such as EXPECT_TRUE.
GTEST_API_ std::string GetBoolAssertionFailureMessage(
    const AssertionResult& assertion_result, const char* expression_text,
    const char* actual_predicate_value, const char* expected_predicate_value);

// This template class represents an IEEE floating-point number
// (either single-precision or double-precision, depending on the
// template parameters).
//
// The purpose of this class is to do more sophisticated number
// comparison.  (Due to round-off error, etc, it's very unlikely that
// two floating-points will be equal exactly.  Hence a naive
// comparison by the == operation often doesn't work.)
//
// Format of IEEE floating-point:
//
//   The most-significant bit being the leftmost, an IEEE
//   floating-point looks like
//
//     sign_bit exponent_bits fraction_bits
//
//   Here, sign_bit is a single bit that designates the sign of the
//   number.
//
//   For float, there are 8 exponent bits and 23 fraction bits.
//
//   For double, there are 11 exponent bits and 52 fraction bits.
//
//   More details can be found at
//   http://en.wikipedia.org/wiki/IEEE_floating-point_standard.
//
// Template parameter:
//
//   RawType: the raw floating-point type (either float or double)
template <typename RawType>
class FloatingPoint { … };

// Typedefs the instances of the FloatingPoint template class that we
// care to use.
Float;
Double;

// In order to catch the mistake of putting tests that use different
// test fixture classes in the same test suite, we need to assign
// unique IDs to fixture classes and compare them.  The TypeId type is
// used to hold such IDs.  The user should treat TypeId as an opaque
// type: the only operation allowed on TypeId values is to compare
// them for equality using the == operator.
TypeId;

template <typename T>
class TypeIdHelper { … };

template <typename T>
bool TypeIdHelper<T>::dummy_ = …;

// GetTypeId<T>() returns the ID of type T.  Different values will be
// returned for different types.  Calling the function twice with the
// same type argument is guaranteed to return the same ID.
template <typename T>
TypeId GetTypeId() { … }

// Returns the type ID of ::testing::Test.  Always call this instead
// of GetTypeId< ::testing::Test>() to get the type ID of
// ::testing::Test, as the latter may give the wrong result due to a
// suspected linker bug when compiling Google Test as a Mac OS X
// framework.
GTEST_API_ TypeId GetTestTypeId();

// Defines the abstract factory interface that creates instances
// of a Test object.
class TestFactoryBase { … };

// This class provides implementation of TestFactoryBase interface.
// It is used in TEST and TEST_F macros.
template <class TestClass>
class TestFactoryImpl : public TestFactoryBase { … };

#ifdef GTEST_OS_WINDOWS

// Predicate-formatters for implementing the HRESULT checking macros
// {ASSERT|EXPECT}_HRESULT_{SUCCEEDED|FAILED}
// We pass a long instead of HRESULT to avoid causing an
// include dependency for the HRESULT type.
GTEST_API_ AssertionResult IsHRESULTSuccess(const char* expr,
                                            long hr);  // NOLINT
GTEST_API_ AssertionResult IsHRESULTFailure(const char* expr,
                                            long hr);  // NOLINT

#endif  // GTEST_OS_WINDOWS

// Types of SetUpTestSuite() and TearDownTestSuite() functions.
SetUpTestSuiteFunc;
TearDownTestSuiteFunc;

struct CodeLocation { … };

//  Helper to identify which setup function for TestCase / TestSuite to call.
//  Only one function is allowed, either TestCase or TestSute but not both.

// Utility functions to help SuiteApiResolver
SetUpTearDownSuiteFuncType;

inline SetUpTearDownSuiteFuncType GetNotDefaultOrNull(
    SetUpTearDownSuiteFuncType a, SetUpTearDownSuiteFuncType def) { … }

template <typename T>
//  Note that SuiteApiResolver inherits from T because
//  SetUpTestSuite()/TearDownTestSuite() could be protected. This way
//  SuiteApiResolver can access them.
struct SuiteApiResolver : T { … };

// Creates a new TestInfo object and registers it with Google Test;
// returns the created object.
//
// Arguments:
//
//   test_suite_name:  name of the test suite
//   name:             name of the test
//   type_param:       the name of the test's type parameter, or NULL if
//                     this is not a typed or a type-parameterized test.
//   value_param:      text representation of the test's value parameter,
//                     or NULL if this is not a type-parameterized test.
//   code_location:    code location where the test is defined
//   fixture_class_id: ID of the test fixture class
//   set_up_tc:        pointer to the function that sets up the test suite
//   tear_down_tc:     pointer to the function that tears down the test suite
//   factory:          pointer to the factory that creates a test object.
//                     The newly created TestInfo instance will assume
//                     ownership of the factory object.
GTEST_API_ TestInfo* MakeAndRegisterTestInfo(
    const char* test_suite_name, const char* name, const char* type_param,
    const char* value_param, CodeLocation code_location,
    TypeId fixture_class_id, SetUpTestSuiteFunc set_up_tc,
    TearDownTestSuiteFunc tear_down_tc, TestFactoryBase* factory);

// If *pstr starts with the given prefix, modifies *pstr to be right
// past the prefix and returns true; otherwise leaves *pstr unchanged
// and returns false.  None of pstr, *pstr, and prefix can be NULL.
GTEST_API_ bool SkipPrefix(const char* prefix, const char** pstr);

GTEST_DISABLE_MSC_WARNINGS_PUSH_(…)

// State of the definition of a type-parameterized test suite.
class GTEST_API_ TypedTestSuitePState { … };

//  Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
TypedTestCasePState;
#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_

GTEST_DISABLE_MSC_WARNINGS_POP_(…)  //  4251

// Skips to the first non-space char after the first comma in 'str';
// returns NULL if no comma is found in 'str'.
inline const char* SkipComma(const char* str) { … }

// Returns the prefix of 'str' before the first comma in it; returns
// the entire string if it contains no comma.
inline std::string GetPrefixUntilComma(const char* str) { … }

// Splits a given string on a given delimiter, populating a given
// vector with the fields.
void SplitString(const ::std::string& str, char delimiter,
                 ::std::vector<::std::string>* dest);

// The default argument to the template below for the case when the user does
// not provide a name generator.
struct DefaultNameGenerator { … };

template <typename Provided = DefaultNameGenerator>
struct NameGeneratorSelector { … };

template <typename NameGenerator>
void GenerateNamesRecursively(internal::None, std::vector<std::string>*, int) { … }

template <typename NameGenerator, typename Types>
void GenerateNamesRecursively(Types, std::vector<std::string>* result, int i) { … }

template <typename NameGenerator, typename Types>
std::vector<std::string> GenerateNames() { … }

// TypeParameterizedTest<Fixture, TestSel, Types>::Register()
// registers a list of type-parameterized tests with Google Test.  The
// return value is insignificant - we just need to return something
// such that we can call this function in a namespace scope.
//
// Implementation note: The GTEST_TEMPLATE_ macro declares a template
// template parameter.  It's defined in gtest-type-util.h.
template <GTEST_TEMPLATE_ Fixture, class TestSel, typename Types>
class TypeParameterizedTest { … };

// The base case for the compile time recursion.
TypeParameterizedTest<Fixture, TestSel, internal::None>;

GTEST_API_ void RegisterTypeParameterizedTestSuite(const char* test_suite_name,
                                                   CodeLocation code_location);
GTEST_API_ void RegisterTypeParameterizedTestSuiteInstantiation(
    const char* case_name);

// TypeParameterizedTestSuite<Fixture, Tests, Types>::Register()
// registers *all combinations* of 'Tests' and 'Types' with Google
// Test.  The return value is insignificant - we just need to return
// something such that we can call this function in a namespace scope.
template <GTEST_TEMPLATE_ Fixture, typename Tests, typename Types>
class TypeParameterizedTestSuite { … };

// The base case for the compile time recursion.
TypeParameterizedTestSuite<Fixture, internal::None, Types>;

// Returns the current OS stack trace as an std::string.
//
// The maximum number of stack frames to be included is specified by
// the gtest_stack_trace_depth flag.  The skip_count parameter
// specifies the number of top frames to be skipped, which doesn't
// count against the number of frames to be included.
//
// For example, if Foo() calls Bar(), which in turn calls
// GetCurrentOsStackTraceExceptTop(..., 1), Foo() will be included in
// the trace but Bar() and GetCurrentOsStackTraceExceptTop() won't.
GTEST_API_ std::string GetCurrentOsStackTraceExceptTop(int skip_count);

// Helpers for suppressing warnings on unreachable code or constant
// condition.

// Always returns true.
GTEST_API_ bool AlwaysTrue();

// Always returns false.
inline bool AlwaysFalse() { … }

// Helper for suppressing false warning from Clang on a const char*
// variable declared in a conditional expression always being NULL in
// the else branch.
struct GTEST_API_ ConstCharPtr { … };

// Helper for declaring std::string within 'if' statement
// in pre C++17 build environment.
struct TrueWithString { … };

// A simple Linear Congruential Generator for generating random
// numbers with a uniform distribution.  Unlike rand() and srand(), it
// doesn't use global state (and therefore can't interfere with user
// code).  Unlike rand_r(), it's portable.  An LCG isn't very random,
// but it's good enough for our purposes.
class GTEST_API_ Random { … };

// Turns const U&, U&, const U, and U all into U.
#define GTEST_REMOVE_REFERENCE_AND_CONST_(T) …

// HasDebugStringAndShortDebugString<T>::value is a compile-time bool constant
// that's true if and only if T has methods DebugString() and ShortDebugString()
// that return std::string.
template <typename T>
class HasDebugStringAndShortDebugString { … };

#ifdef GTEST_INTERNAL_NEED_REDUNDANT_CONSTEXPR_DECL
template <typename T>
constexpr bool HasDebugStringAndShortDebugString<T>::value;
#endif

// When the compiler sees expression IsContainerTest<C>(0), if C is an
// STL-style container class, the first overload of IsContainerTest
// will be viable (since both C::iterator* and C::const_iterator* are
// valid types and NULL can be implicitly converted to them).  It will
// be picked over the second overload as 'int' is a perfect match for
// the type of argument 0.  If C::iterator or C::const_iterator is not
// a valid type, the first overload is not viable, and the second
// overload will be picked.  Therefore, we can determine whether C is
// a container class by checking the type of IsContainerTest<C>(0).
// The value of the expression is insignificant.
//
// In C++11 mode we check the existence of a const_iterator and that an
// iterator is properly implemented for the container.
//
// For pre-C++11 that we look for both C::iterator and C::const_iterator.
// The reason is that C++ injects the name of a class as a member of the
// class itself (e.g. you can refer to class iterator as either
// 'iterator' or 'iterator::iterator').  If we look for C::iterator
// only, for example, we would mistakenly think that a class named
// iterator is an STL container.
//
// Also note that the simpler approach of overloading
// IsContainerTest(typename C::const_iterator*) and
// IsContainerTest(...) doesn't work with Visual Age C++ and Sun C++.
IsContainer;
template <class C,
          class Iterator = decltype(::std::declval<const C&>().begin()),
          class = decltype(::std::declval<const C&>().end()),
          class = decltype(++::std::declval<Iterator&>()),
          class = decltype(*::std::declval<Iterator>()),
          class = typename C::const_iterator>
IsContainer IsContainerTest(int /* dummy */) { … }

IsNotContainer;
template <class C>
IsNotContainer IsContainerTest(long /* dummy */) { … }

// Trait to detect whether a type T is a hash table.
// The heuristic used is that the type contains an inner type `hasher` and does
// not contain an inner type `reverse_iterator`.
// If the container is iterable in reverse, then order might actually matter.
template <typename T>
struct IsHashTable { … };

template <typename T>
const bool IsHashTable<T>::value;

template <typename C,
          bool = sizeof(IsContainerTest<C>(0)) == sizeof(IsContainer)>
struct IsRecursiveContainerImpl;

IsRecursiveContainerImpl<C, false>;

// Since the IsRecursiveContainerImpl depends on the IsContainerTest we need to
// obey the same inconsistencies as the IsContainerTest, namely check if
// something is a container is relying on only const_iterator in C++11 and
// is relying on both const_iterator and iterator otherwise
IsRecursiveContainerImpl<C, true>;

// IsRecursiveContainer<Type> is a unary compile-time predicate that
// evaluates whether C is a recursive container type. A recursive container
// type is a container type whose value_type is equal to the container type
// itself. An example for a recursive container type is
// boost::filesystem::path, whose iterator has a value_type that is equal to
// boost::filesystem::path.
template <typename C>
struct IsRecursiveContainer : public IsRecursiveContainerImpl<C>::type { … };

// Utilities for native arrays.

// ArrayEq() compares two k-dimensional native arrays using the
// elements' operator==, where k can be any integer >= 0.  When k is
// 0, ArrayEq() degenerates into comparing a single pair of values.

template <typename T, typename U>
bool ArrayEq(const T* lhs, size_t size, const U* rhs);

// This generic version is used when k is 0.
template <typename T, typename U>
inline bool ArrayEq(const T& lhs, const U& rhs) { … }

// This overload is used when k >= 1.
template <typename T, typename U, size_t N>
inline bool ArrayEq(const T (&lhs)[N], const U (&rhs)[N]) { … }

// This helper reduces code bloat.  If we instead put its logic inside
// the previous ArrayEq() function, arrays with different sizes would
// lead to different copies of the template code.
template <typename T, typename U>
bool ArrayEq(const T* lhs, size_t size, const U* rhs) { … }

// Finds the first element in the iterator range [begin, end) that
// equals elem.  Element may be a native array type itself.
template <typename Iter, typename Element>
Iter ArrayAwareFind(Iter begin, Iter end, const Element& elem) { … }

// CopyArray() copies a k-dimensional native array using the elements'
// operator=, where k can be any integer >= 0.  When k is 0,
// CopyArray() degenerates into copying a single value.

template <typename T, typename U>
void CopyArray(const T* from, size_t size, U* to);

// This generic version is used when k is 0.
template <typename T, typename U>
inline void CopyArray(const T& from, U* to) { … }

// This overload is used when k >= 1.
template <typename T, typename U, size_t N>
inline void CopyArray(const T (&from)[N], U (*to)[N]) { … }

// This helper reduces code bloat.  If we instead put its logic inside
// the previous CopyArray() function, arrays with different sizes
// would lead to different copies of the template code.
template <typename T, typename U>
void CopyArray(const T* from, size_t size, U* to) { … }

// The relation between an NativeArray object (see below) and the
// native array it represents.
// We use 2 different structs to allow non-copyable types to be used, as long
// as RelationToSourceReference() is passed.
struct RelationToSourceReference { … };
struct RelationToSourceCopy { … };

// Adapts a native array to a read-only STL-style container.  Instead
// of the complete STL container concept, this adaptor only implements
// members useful for Google Mock's container matchers.  New members
// should be added as needed.  To simplify the implementation, we only
// support Element being a raw type (i.e. having no top-level const or
// reference modifier).  It's the client's responsibility to satisfy
// this requirement.  Element can be an array type itself (hence
// multi-dimensional arrays are supported).
template <typename Element>
class NativeArray { … };

// Backport of std::index_sequence.
template <size_t... Is>
struct IndexSequence { … };

// Double the IndexSequence, and one if plus_one is true.
template <bool plus_one, typename T, size_t sizeofT>
struct DoubleSequence;
DoubleSequence<true, IndexSequence<I...>, sizeofT>;
DoubleSequence<false, IndexSequence<I...>, sizeofT>;

// Backport of std::make_index_sequence.
// It uses O(ln(N)) instantiation depth.
template <size_t N>
struct MakeIndexSequenceImpl
    : DoubleSequence<N % 2 == 1, typename MakeIndexSequenceImpl<N / 2>::type,
                     N / 2>::type { … };

template <>
struct MakeIndexSequenceImpl<0> : IndexSequence<> { … };

MakeIndexSequence;

IndexSequenceFor;

template <size_t>
struct Ignore { … };

template <typename>
struct ElemFromListImpl;
ElemFromListImpl<IndexSequence<I...>>;

template <size_t N, typename... T>
struct ElemFromList { … };

struct FlatTupleConstructTag { … };

template <typename... T>
class FlatTuple;

template <typename Derived, size_t I>
struct FlatTupleElemBase;

FlatTupleElemBase<FlatTuple<T...>, I>;

template <typename Derived, typename Idx>
struct FlatTupleBase;

FlatTupleBase<FlatTuple<T...>, IndexSequence<Idx...>>;

// Analog to std::tuple but with different tradeoffs.
// This class minimizes the template instantiation depth, thus allowing more
// elements than std::tuple would. std::tuple has been seen to require an
// instantiation depth of more than 10x the number of elements in some
// implementations.
// FlatTuple and ElemFromList are not recursive and have a fixed depth
// regardless of T...
// MakeIndexSequence, on the other hand, it is recursive but with an
// instantiation depth of O(ln(N)).
template <typename... T>
class FlatTuple
    : private FlatTupleBase<FlatTuple<T...>,
                            typename MakeIndexSequence<sizeof...(T)>::type> { … };

// Utility functions to be called with static_assert to induce deprecation
// warnings.
GTEST_INTERNAL_DEPRECATED(
    "INSTANTIATE_TEST_CASE_P is deprecated, please use "
    "INSTANTIATE_TEST_SUITE_P")
constexpr bool InstantiateTestCase_P_IsDeprecated() { … }

GTEST_INTERNAL_DEPRECATED(
    "TYPED_TEST_CASE_P is deprecated, please use "
    "TYPED_TEST_SUITE_P")
constexpr bool TypedTestCase_P_IsDeprecated() { … }

GTEST_INTERNAL_DEPRECATED(
    "TYPED_TEST_CASE is deprecated, please use "
    "TYPED_TEST_SUITE")
constexpr bool TypedTestCaseIsDeprecated() { … }

GTEST_INTERNAL_DEPRECATED(
    "REGISTER_TYPED_TEST_CASE_P is deprecated, please use "
    "REGISTER_TYPED_TEST_SUITE_P")
constexpr bool RegisterTypedTestCase_P_IsDeprecated() { … }

GTEST_INTERNAL_DEPRECATED(
    "INSTANTIATE_TYPED_TEST_CASE_P is deprecated, please use "
    "INSTANTIATE_TYPED_TEST_SUITE_P")
constexpr bool InstantiateTypedTestCase_P_IsDeprecated() { … }

}  // namespace internal
}  // namespace testing

namespace std {
// Some standard library implementations use `struct tuple_size` and some use
// `class tuple_size`. Clang warns about the mismatch.
// https://reviews.llvm.org/D55466
#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wmismatched-tags"
#endif
tuple_size<testing::internal::FlatTuple<Ts...>>;
#ifdef __clang__
#pragma clang diagnostic pop
#endif
}  // namespace std

#define GTEST_MESSAGE_AT_(file, line, message, result_type) …

#define GTEST_MESSAGE_(message, result_type) …

#define GTEST_FATAL_FAILURE_(message) …

#define GTEST_NONFATAL_FAILURE_(message) …

#define GTEST_SUCCESS_(message) …

#define GTEST_SKIP_(message) …

// Suppress MSVC warning 4072 (unreachable code) for the code following
// statement if it returns or throws (or doesn't return or throw in some
// situations).
// NOTE: The "else" is important to keep this expansion to prevent a top-level
// "else" from attaching to our "if".
#define GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement) …

#if GTEST_HAS_EXCEPTIONS

namespace testing {
namespace internal {

class NeverThrown {
 public:
  const char* what() const noexcept {
    return "this exception should never be thrown";
  }
};

}  // namespace internal
}  // namespace testing

#if GTEST_HAS_RTTI

#define GTEST_EXCEPTION_TYPE_ …

#else  // GTEST_HAS_RTTI

#define GTEST_EXCEPTION_TYPE_ …

#endif  // GTEST_HAS_RTTI

#define GTEST_TEST_THROW_CATCH_STD_EXCEPTION_ …

#else  // GTEST_HAS_EXCEPTIONS

#define GTEST_TEST_THROW_CATCH_STD_EXCEPTION_(statement, expected_exception) …

#endif  // GTEST_HAS_EXCEPTIONS

#define GTEST_TEST_THROW_(statement, expected_exception, fail) …

#if GTEST_HAS_EXCEPTIONS

#define GTEST_TEST_NO_THROW_CATCH_STD_EXCEPTION_ …

#else  // GTEST_HAS_EXCEPTIONS

#define GTEST_TEST_NO_THROW_CATCH_STD_EXCEPTION_() …

#endif  // GTEST_HAS_EXCEPTIONS

#define GTEST_TEST_NO_THROW_(statement, fail) …

#define GTEST_TEST_ANY_THROW_(statement, fail) …

// Implements Boolean test assertions such as EXPECT_TRUE. expression can be
// either a boolean expression or an AssertionResult. text is a textual
// representation of expression as it was passed into the EXPECT_TRUE.
#define GTEST_TEST_BOOLEAN_(expression, text, actual, expected, fail) …

#define GTEST_TEST_NO_FATAL_FAILURE_(statement, fail) …

// Expands to the name of the class that implements the given test.
#define GTEST_TEST_CLASS_NAME_(test_suite_name, test_name) …

// Helper macro for defining tests.
#define GTEST_TEST_(test_suite_name, test_name, parent_class, parent_id) …

#endif  // GOOGLETEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_