From 19fcec84d8d7d21e796c7624e521b60d28ee21ed Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:45:59 +0200 Subject: Adding upstream version 16.2.11+ds. Signed-off-by: Daniel Baumann --- .../googlemock/include/gmock/gmock-matchers.h | 4567 ++++++++++++++++++++ 1 file changed, 4567 insertions(+) create mode 100644 src/spawn/test/dependency/googletest/googlemock/include/gmock/gmock-matchers.h (limited to 'src/spawn/test/dependency/googletest/googlemock/include/gmock/gmock-matchers.h') diff --git a/src/spawn/test/dependency/googletest/googlemock/include/gmock/gmock-matchers.h b/src/spawn/test/dependency/googletest/googlemock/include/gmock/gmock-matchers.h new file mode 100644 index 000000000..fa50903b2 --- /dev/null +++ b/src/spawn/test/dependency/googletest/googlemock/include/gmock/gmock-matchers.h @@ -0,0 +1,4567 @@ +// 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. + + +// Google Mock - a framework for writing C++ mock classes. +// +// This file implements some commonly used argument matchers. More +// matchers can be defined by the user implementing the +// MatcherInterface interface if necessary. +// +// See googletest/include/gtest/gtest-matchers.h for the definition of class +// Matcher, class MatcherInterface, and others. + +// GOOGLETEST_CM0002 DO NOT DELETE + +#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_MATCHERS_H_ +#define GMOCK_INCLUDE_GMOCK_GMOCK_MATCHERS_H_ + +#include +#include +#include +#include +#include +#include +#include // NOLINT +#include +#include +#include +#include +#include +#include "gmock/internal/gmock-internal-utils.h" +#include "gmock/internal/gmock-port.h" +#include "gtest/gtest.h" + +// MSVC warning C5046 is new as of VS2017 version 15.8. +#if defined(_MSC_VER) && _MSC_VER >= 1915 +#define GMOCK_MAYBE_5046_ 5046 +#else +#define GMOCK_MAYBE_5046_ +#endif + +GTEST_DISABLE_MSC_WARNINGS_PUSH_( + 4251 GMOCK_MAYBE_5046_ /* class A needs to have dll-interface to be used by + clients of class B */ + /* Symbol involving type with internal linkage not defined */) + +namespace testing { + +// To implement a matcher Foo for type T, define: +// 1. a class FooMatcherImpl that implements the +// MatcherInterface interface, and +// 2. a factory function that creates a Matcher object from a +// FooMatcherImpl*. +// +// The two-level delegation design makes it possible to allow a user +// to write "v" instead of "Eq(v)" where a Matcher is expected, which +// is impossible if we pass matchers by pointers. It also eases +// ownership management as Matcher objects can now be copied like +// plain values. + +// A match result listener that stores the explanation in a string. +class StringMatchResultListener : public MatchResultListener { + public: + StringMatchResultListener() : MatchResultListener(&ss_) {} + + // Returns the explanation accumulated so far. + std::string str() const { return ss_.str(); } + + // Clears the explanation accumulated so far. + void Clear() { ss_.str(""); } + + private: + ::std::stringstream ss_; + + GTEST_DISALLOW_COPY_AND_ASSIGN_(StringMatchResultListener); +}; + +// Anything inside the 'internal' namespace IS INTERNAL IMPLEMENTATION +// and MUST NOT BE USED IN USER CODE!!! +namespace internal { + +// The MatcherCastImpl class template is a helper for implementing +// MatcherCast(). We need this helper in order to partially +// specialize the implementation of MatcherCast() (C++ allows +// class/struct templates to be partially specialized, but not +// function templates.). + +// This general version is used when MatcherCast()'s argument is a +// polymorphic matcher (i.e. something that can be converted to a +// Matcher but is not one yet; for example, Eq(value)) or a value (for +// example, "hello"). +template +class MatcherCastImpl { + public: + static Matcher Cast(const M& polymorphic_matcher_or_value) { + // M can be a polymorphic matcher, in which case we want to use + // its conversion operator to create Matcher. Or it can be a value + // that should be passed to the Matcher's constructor. + // + // We can't call Matcher(polymorphic_matcher_or_value) when M is a + // polymorphic matcher because it'll be ambiguous if T has an implicit + // constructor from M (this usually happens when T has an implicit + // constructor from any type). + // + // It won't work to unconditionally implict_cast + // polymorphic_matcher_or_value to Matcher because it won't trigger + // a user-defined conversion from M to T if one exists (assuming M is + // a value). + return CastImpl(polymorphic_matcher_or_value, + std::is_convertible>{}, + std::is_convertible{}); + } + + private: + template + static Matcher CastImpl(const M& polymorphic_matcher_or_value, + std::true_type /* convertible_to_matcher */, + bool_constant) { + // M is implicitly convertible to Matcher, which means that either + // M is a polymorphic matcher or Matcher has an implicit constructor + // from M. In both cases using the implicit conversion will produce a + // matcher. + // + // Even if T has an implicit constructor from M, it won't be called because + // creating Matcher would require a chain of two user-defined conversions + // (first to create T from M and then to create Matcher from T). + return polymorphic_matcher_or_value; + } + + // M can't be implicitly converted to Matcher, so M isn't a polymorphic + // matcher. It's a value of a type implicitly convertible to T. Use direct + // initialization to create a matcher. + static Matcher CastImpl(const M& value, + std::false_type /* convertible_to_matcher */, + std::true_type /* convertible_to_T */) { + return Matcher(ImplicitCast_(value)); + } + + // M can't be implicitly converted to either Matcher or T. Attempt to use + // polymorphic matcher Eq(value) in this case. + // + // Note that we first attempt to perform an implicit cast on the value and + // only fall back to the polymorphic Eq() matcher afterwards because the + // latter calls bool operator==(const Lhs& lhs, const Rhs& rhs) in the end + // which might be undefined even when Rhs is implicitly convertible to Lhs + // (e.g. std::pair vs. std::pair). + // + // We don't define this method inline as we need the declaration of Eq(). + static Matcher CastImpl(const M& value, + std::false_type /* convertible_to_matcher */, + std::false_type /* convertible_to_T */); +}; + +// This more specialized version is used when MatcherCast()'s argument +// is already a Matcher. This only compiles when type T can be +// statically converted to type U. +template +class MatcherCastImpl > { + public: + static Matcher Cast(const Matcher& source_matcher) { + return Matcher(new Impl(source_matcher)); + } + + private: + class Impl : public MatcherInterface { + public: + explicit Impl(const Matcher& source_matcher) + : source_matcher_(source_matcher) {} + + // We delegate the matching logic to the source matcher. + bool MatchAndExplain(T x, MatchResultListener* listener) const override { + using FromType = typename std::remove_cv::type>::type>::type; + using ToType = typename std::remove_cv::type>::type>::type; + // Do not allow implicitly converting base*/& to derived*/&. + static_assert( + // Do not trigger if only one of them is a pointer. That implies a + // regular conversion and not a down_cast. + (std::is_pointer::type>::value != + std::is_pointer::type>::value) || + std::is_same::value || + !std::is_base_of::value, + "Can't implicitly convert from to "); + + return source_matcher_.MatchAndExplain(static_cast(x), listener); + } + + void DescribeTo(::std::ostream* os) const override { + source_matcher_.DescribeTo(os); + } + + void DescribeNegationTo(::std::ostream* os) const override { + source_matcher_.DescribeNegationTo(os); + } + + private: + const Matcher source_matcher_; + + GTEST_DISALLOW_ASSIGN_(Impl); + }; +}; + +// This even more specialized version is used for efficiently casting +// a matcher to its own type. +template +class MatcherCastImpl > { + public: + static Matcher Cast(const Matcher& matcher) { return matcher; } +}; + +} // namespace internal + +// In order to be safe and clear, casting between different matcher +// types is done explicitly via MatcherCast(m), which takes a +// matcher m and returns a Matcher. It compiles only when T can be +// statically converted to the argument type of m. +template +inline Matcher MatcherCast(const M& matcher) { + return internal::MatcherCastImpl::Cast(matcher); +} + +// Implements SafeMatcherCast(). +// +// FIXME: The intermediate SafeMatcherCastImpl class was introduced as a +// workaround for a compiler bug, and can now be removed. +template +class SafeMatcherCastImpl { + public: + // This overload handles polymorphic matchers and values only since + // monomorphic matchers are handled by the next one. + template + static inline Matcher Cast(const M& polymorphic_matcher_or_value) { + return internal::MatcherCastImpl::Cast(polymorphic_matcher_or_value); + } + + // This overload handles monomorphic matchers. + // + // In general, if type T can be implicitly converted to type U, we can + // safely convert a Matcher to a Matcher (i.e. Matcher is + // contravariant): just keep a copy of the original Matcher, convert the + // argument from type T to U, and then pass it to the underlying Matcher. + // The only exception is when U is a reference and T is not, as the + // underlying Matcher may be interested in the argument's address, which + // is not preserved in the conversion from T to U. + template + static inline Matcher Cast(const Matcher& matcher) { + // Enforce that T can be implicitly converted to U. + GTEST_COMPILE_ASSERT_((std::is_convertible::value), + "T must be implicitly convertible to U"); + // Enforce that we are not converting a non-reference type T to a reference + // type U. + GTEST_COMPILE_ASSERT_( + std::is_reference::value || !std::is_reference::value, + cannot_convert_non_reference_arg_to_reference); + // In case both T and U are arithmetic types, enforce that the + // conversion is not lossy. + typedef GTEST_REMOVE_REFERENCE_AND_CONST_(T) RawT; + typedef GTEST_REMOVE_REFERENCE_AND_CONST_(U) RawU; + const bool kTIsOther = GMOCK_KIND_OF_(RawT) == internal::kOther; + const bool kUIsOther = GMOCK_KIND_OF_(RawU) == internal::kOther; + GTEST_COMPILE_ASSERT_( + kTIsOther || kUIsOther || + (internal::LosslessArithmeticConvertible::value), + conversion_of_arithmetic_types_must_be_lossless); + return MatcherCast(matcher); + } +}; + +template +inline Matcher SafeMatcherCast(const M& polymorphic_matcher) { + return SafeMatcherCastImpl::Cast(polymorphic_matcher); +} + +// A() returns a matcher that matches any value of type T. +template +Matcher A(); + +// Anything inside the 'internal' namespace IS INTERNAL IMPLEMENTATION +// and MUST NOT BE USED IN USER CODE!!! +namespace internal { + +// If the explanation is not empty, prints it to the ostream. +inline void PrintIfNotEmpty(const std::string& explanation, + ::std::ostream* os) { + if (explanation != "" && os != nullptr) { + *os << ", " << explanation; + } +} + +// Returns true if the given type name is easy to read by a human. +// This is used to decide whether printing the type of a value might +// be helpful. +inline bool IsReadableTypeName(const std::string& type_name) { + // We consider a type name readable if it's short or doesn't contain + // a template or function type. + return (type_name.length() <= 20 || + type_name.find_first_of("<(") == std::string::npos); +} + +// Matches the value against the given matcher, prints the value and explains +// the match result to the listener. Returns the match result. +// 'listener' must not be NULL. +// Value cannot be passed by const reference, because some matchers take a +// non-const argument. +template +bool MatchPrintAndExplain(Value& value, const Matcher& matcher, + MatchResultListener* listener) { + if (!listener->IsInterested()) { + // If the listener is not interested, we do not need to construct the + // inner explanation. + return matcher.Matches(value); + } + + StringMatchResultListener inner_listener; + const bool match = matcher.MatchAndExplain(value, &inner_listener); + + UniversalPrint(value, listener->stream()); +#if GTEST_HAS_RTTI + const std::string& type_name = GetTypeName(); + if (IsReadableTypeName(type_name)) + *listener->stream() << " (of type " << type_name << ")"; +#endif + PrintIfNotEmpty(inner_listener.str(), listener->stream()); + + return match; +} + +// An internal helper class for doing compile-time loop on a tuple's +// fields. +template +class TuplePrefix { + public: + // TuplePrefix::Matches(matcher_tuple, value_tuple) returns true + // if the first N fields of matcher_tuple matches the first N + // fields of value_tuple, respectively. + template + static bool Matches(const MatcherTuple& matcher_tuple, + const ValueTuple& value_tuple) { + return TuplePrefix::Matches(matcher_tuple, value_tuple) && + std::get(matcher_tuple).Matches(std::get(value_tuple)); + } + + // TuplePrefix::ExplainMatchFailuresTo(matchers, values, os) + // describes failures in matching the first N fields of matchers + // against the first N fields of values. If there is no failure, + // nothing will be streamed to os. + template + static void ExplainMatchFailuresTo(const MatcherTuple& matchers, + const ValueTuple& values, + ::std::ostream* os) { + // First, describes failures in the first N - 1 fields. + TuplePrefix::ExplainMatchFailuresTo(matchers, values, os); + + // Then describes the failure (if any) in the (N - 1)-th (0-based) + // field. + typename std::tuple_element::type matcher = + std::get(matchers); + typedef typename std::tuple_element::type Value; + const Value& value = std::get(values); + StringMatchResultListener listener; + if (!matcher.MatchAndExplain(value, &listener)) { + *os << " Expected arg #" << N - 1 << ": "; + std::get(matchers).DescribeTo(os); + *os << "\n Actual: "; + // We remove the reference in type Value to prevent the + // universal printer from printing the address of value, which + // isn't interesting to the user most of the time. The + // matcher's MatchAndExplain() method handles the case when + // the address is interesting. + internal::UniversalPrint(value, os); + PrintIfNotEmpty(listener.str(), os); + *os << "\n"; + } + } +}; + +// The base case. +template <> +class TuplePrefix<0> { + public: + template + static bool Matches(const MatcherTuple& /* matcher_tuple */, + const ValueTuple& /* value_tuple */) { + return true; + } + + template + static void ExplainMatchFailuresTo(const MatcherTuple& /* matchers */, + const ValueTuple& /* values */, + ::std::ostream* /* os */) {} +}; + +// TupleMatches(matcher_tuple, value_tuple) returns true if all +// matchers in matcher_tuple match the corresponding fields in +// value_tuple. It is a compiler error if matcher_tuple and +// value_tuple have different number of fields or incompatible field +// types. +template +bool TupleMatches(const MatcherTuple& matcher_tuple, + const ValueTuple& value_tuple) { + // Makes sure that matcher_tuple and value_tuple have the same + // number of fields. + GTEST_COMPILE_ASSERT_(std::tuple_size::value == + std::tuple_size::value, + matcher_and_value_have_different_numbers_of_fields); + return TuplePrefix::value>::Matches(matcher_tuple, + value_tuple); +} + +// Describes failures in matching matchers against values. If there +// is no failure, nothing will be streamed to os. +template +void ExplainMatchFailureTupleTo(const MatcherTuple& matchers, + const ValueTuple& values, + ::std::ostream* os) { + TuplePrefix::value>::ExplainMatchFailuresTo( + matchers, values, os); +} + +// TransformTupleValues and its helper. +// +// TransformTupleValuesHelper hides the internal machinery that +// TransformTupleValues uses to implement a tuple traversal. +template +class TransformTupleValuesHelper { + private: + typedef ::std::tuple_size TupleSize; + + public: + // For each member of tuple 't', taken in order, evaluates '*out++ = f(t)'. + // Returns the final value of 'out' in case the caller needs it. + static OutIter Run(Func f, const Tuple& t, OutIter out) { + return IterateOverTuple()(f, t, out); + } + + private: + template + struct IterateOverTuple { + OutIter operator() (Func f, const Tup& t, OutIter out) const { + *out++ = f(::std::get(t)); + return IterateOverTuple()(f, t, out); + } + }; + template + struct IterateOverTuple { + OutIter operator() (Func /* f */, const Tup& /* t */, OutIter out) const { + return out; + } + }; +}; + +// Successively invokes 'f(element)' on each element of the tuple 't', +// appending each result to the 'out' iterator. Returns the final value +// of 'out'. +template +OutIter TransformTupleValues(Func f, const Tuple& t, OutIter out) { + return TransformTupleValuesHelper::Run(f, t, out); +} + +// Implements A(). +template +class AnyMatcherImpl : public MatcherInterface { + public: + bool MatchAndExplain(const T& /* x */, + MatchResultListener* /* listener */) const override { + return true; + } + void DescribeTo(::std::ostream* os) const override { *os << "is anything"; } + void DescribeNegationTo(::std::ostream* os) const override { + // This is mostly for completeness' safe, as it's not very useful + // to write Not(A()). However we cannot completely rule out + // such a possibility, and it doesn't hurt to be prepared. + *os << "never matches"; + } +}; + +// Implements _, a matcher that matches any value of any +// type. This is a polymorphic matcher, so we need a template type +// conversion operator to make it appearing as a Matcher for any +// type T. +class AnythingMatcher { + public: + template + operator Matcher() const { return A(); } +}; + +// Implements the polymorphic IsNull() matcher, which matches any raw or smart +// pointer that is NULL. +class IsNullMatcher { + public: + template + bool MatchAndExplain(const Pointer& p, + MatchResultListener* /* listener */) const { + return p == nullptr; + } + + void DescribeTo(::std::ostream* os) const { *os << "is NULL"; } + void DescribeNegationTo(::std::ostream* os) const { + *os << "isn't NULL"; + } +}; + +// Implements the polymorphic NotNull() matcher, which matches any raw or smart +// pointer that is not NULL. +class NotNullMatcher { + public: + template + bool MatchAndExplain(const Pointer& p, + MatchResultListener* /* listener */) const { + return p != nullptr; + } + + void DescribeTo(::std::ostream* os) const { *os << "isn't NULL"; } + void DescribeNegationTo(::std::ostream* os) const { + *os << "is NULL"; + } +}; + +// Ref(variable) matches any argument that is a reference to +// 'variable'. This matcher is polymorphic as it can match any +// super type of the type of 'variable'. +// +// The RefMatcher template class implements Ref(variable). It can +// only be instantiated with a reference type. This prevents a user +// from mistakenly using Ref(x) to match a non-reference function +// argument. For example, the following will righteously cause a +// compiler error: +// +// int n; +// Matcher m1 = Ref(n); // This won't compile. +// Matcher m2 = Ref(n); // This will compile. +template +class RefMatcher; + +template +class RefMatcher { + // Google Mock is a generic framework and thus needs to support + // mocking any function types, including those that take non-const + // reference arguments. Therefore the template parameter T (and + // Super below) can be instantiated to either a const type or a + // non-const type. + public: + // RefMatcher() takes a T& instead of const T&, as we want the + // compiler to catch using Ref(const_value) as a matcher for a + // non-const reference. + explicit RefMatcher(T& x) : object_(x) {} // NOLINT + + template + operator Matcher() const { + // By passing object_ (type T&) to Impl(), which expects a Super&, + // we make sure that Super is a super type of T. In particular, + // this catches using Ref(const_value) as a matcher for a + // non-const reference, as you cannot implicitly convert a const + // reference to a non-const reference. + return MakeMatcher(new Impl(object_)); + } + + private: + template + class Impl : public MatcherInterface { + public: + explicit Impl(Super& x) : object_(x) {} // NOLINT + + // MatchAndExplain() takes a Super& (as opposed to const Super&) + // in order to match the interface MatcherInterface. + bool MatchAndExplain(Super& x, + MatchResultListener* listener) const override { + *listener << "which is located @" << static_cast(&x); + return &x == &object_; + } + + void DescribeTo(::std::ostream* os) const override { + *os << "references the variable "; + UniversalPrinter::Print(object_, os); + } + + void DescribeNegationTo(::std::ostream* os) const override { + *os << "does not reference the variable "; + UniversalPrinter::Print(object_, os); + } + + private: + const Super& object_; + + GTEST_DISALLOW_ASSIGN_(Impl); + }; + + T& object_; + + GTEST_DISALLOW_ASSIGN_(RefMatcher); +}; + +// Polymorphic helper functions for narrow and wide string matchers. +inline bool CaseInsensitiveCStringEquals(const char* lhs, const char* rhs) { + return String::CaseInsensitiveCStringEquals(lhs, rhs); +} + +inline bool CaseInsensitiveCStringEquals(const wchar_t* lhs, + const wchar_t* rhs) { + return String::CaseInsensitiveWideCStringEquals(lhs, rhs); +} + +// String comparison for narrow or wide strings that can have embedded NUL +// characters. +template +bool CaseInsensitiveStringEquals(const StringType& s1, + const StringType& s2) { + // Are the heads equal? + if (!CaseInsensitiveCStringEquals(s1.c_str(), s2.c_str())) { + return false; + } + + // Skip the equal heads. + const typename StringType::value_type nul = 0; + const size_t i1 = s1.find(nul), i2 = s2.find(nul); + + // Are we at the end of either s1 or s2? + if (i1 == StringType::npos || i2 == StringType::npos) { + return i1 == i2; + } + + // Are the tails equal? + return CaseInsensitiveStringEquals(s1.substr(i1 + 1), s2.substr(i2 + 1)); +} + +// String matchers. + +// Implements equality-based string matchers like StrEq, StrCaseNe, and etc. +template +class StrEqualityMatcher { + public: + StrEqualityMatcher(const StringType& str, bool expect_eq, + bool case_sensitive) + : string_(str), expect_eq_(expect_eq), case_sensitive_(case_sensitive) {} + +#if GTEST_HAS_ABSL + bool MatchAndExplain(const absl::string_view& s, + MatchResultListener* listener) const { + // This should fail to compile if absl::string_view is used with wide + // strings. + const StringType& str = std::string(s); + return MatchAndExplain(str, listener); + } +#endif // GTEST_HAS_ABSL + + // Accepts pointer types, particularly: + // const char* + // char* + // const wchar_t* + // wchar_t* + template + bool MatchAndExplain(CharType* s, MatchResultListener* listener) const { + if (s == nullptr) { + return !expect_eq_; + } + return MatchAndExplain(StringType(s), listener); + } + + // Matches anything that can convert to StringType. + // + // This is a template, not just a plain function with const StringType&, + // because absl::string_view has some interfering non-explicit constructors. + template + bool MatchAndExplain(const MatcheeStringType& s, + MatchResultListener* /* listener */) const { + const StringType& s2(s); + const bool eq = case_sensitive_ ? s2 == string_ : + CaseInsensitiveStringEquals(s2, string_); + return expect_eq_ == eq; + } + + void DescribeTo(::std::ostream* os) const { + DescribeToHelper(expect_eq_, os); + } + + void DescribeNegationTo(::std::ostream* os) const { + DescribeToHelper(!expect_eq_, os); + } + + private: + void DescribeToHelper(bool expect_eq, ::std::ostream* os) const { + *os << (expect_eq ? "is " : "isn't "); + *os << "equal to "; + if (!case_sensitive_) { + *os << "(ignoring case) "; + } + UniversalPrint(string_, os); + } + + const StringType string_; + const bool expect_eq_; + const bool case_sensitive_; + + GTEST_DISALLOW_ASSIGN_(StrEqualityMatcher); +}; + +// Implements the polymorphic HasSubstr(substring) matcher, which +// can be used as a Matcher as long as T can be converted to a +// string. +template +class HasSubstrMatcher { + public: + explicit HasSubstrMatcher(const StringType& substring) + : substring_(substring) {} + +#if GTEST_HAS_ABSL + bool MatchAndExplain(const absl::string_view& s, + MatchResultListener* listener) const { + // This should fail to compile if absl::string_view is used with wide + // strings. + const StringType& str = std::string(s); + return MatchAndExplain(str, listener); + } +#endif // GTEST_HAS_ABSL + + // Accepts pointer types, particularly: + // const char* + // char* + // const wchar_t* + // wchar_t* + template + bool MatchAndExplain(CharType* s, MatchResultListener* listener) const { + return s != nullptr && MatchAndExplain(StringType(s), listener); + } + + // Matches anything that can convert to StringType. + // + // This is a template, not just a plain function with const StringType&, + // because absl::string_view has some interfering non-explicit constructors. + template + bool MatchAndExplain(const MatcheeStringType& s, + MatchResultListener* /* listener */) const { + const StringType& s2(s); + return s2.find(substring_) != StringType::npos; + } + + // Describes what this matcher matches. + void DescribeTo(::std::ostream* os) const { + *os << "has substring "; + UniversalPrint(substring_, os); + } + + void DescribeNegationTo(::std::ostream* os) const { + *os << "has no substring "; + UniversalPrint(substring_, os); + } + + private: + const StringType substring_; + + GTEST_DISALLOW_ASSIGN_(HasSubstrMatcher); +}; + +// Implements the polymorphic StartsWith(substring) matcher, which +// can be used as a Matcher as long as T can be converted to a +// string. +template +class StartsWithMatcher { + public: + explicit StartsWithMatcher(const StringType& prefix) : prefix_(prefix) { + } + +#if GTEST_HAS_ABSL + bool MatchAndExplain(const absl::string_view& s, + MatchResultListener* listener) const { + // This should fail to compile if absl::string_view is used with wide + // strings. + const StringType& str = std::string(s); + return MatchAndExplain(str, listener); + } +#endif // GTEST_HAS_ABSL + + // Accepts pointer types, particularly: + // const char* + // char* + // const wchar_t* + // wchar_t* + template + bool MatchAndExplain(CharType* s, MatchResultListener* listener) const { + return s != nullptr && MatchAndExplain(StringType(s), listener); + } + + // Matches anything that can convert to StringType. + // + // This is a template, not just a plain function with const StringType&, + // because absl::string_view has some interfering non-explicit constructors. + template + bool MatchAndExplain(const MatcheeStringType& s, + MatchResultListener* /* listener */) const { + const StringType& s2(s); + return s2.length() >= prefix_.length() && + s2.substr(0, prefix_.length()) == prefix_; + } + + void DescribeTo(::std::ostream* os) const { + *os << "starts with "; + UniversalPrint(prefix_, os); + } + + void DescribeNegationTo(::std::ostream* os) const { + *os << "doesn't start with "; + UniversalPrint(prefix_, os); + } + + private: + const StringType prefix_; + + GTEST_DISALLOW_ASSIGN_(StartsWithMatcher); +}; + +// Implements the polymorphic EndsWith(substring) matcher, which +// can be used as a Matcher as long as T can be converted to a +// string. +template +class EndsWithMatcher { + public: + explicit EndsWithMatcher(const StringType& suffix) : suffix_(suffix) {} + +#if GTEST_HAS_ABSL + bool MatchAndExplain(const absl::string_view& s, + MatchResultListener* listener) const { + // This should fail to compile if absl::string_view is used with wide + // strings. + const StringType& str = std::string(s); + return MatchAndExplain(str, listener); + } +#endif // GTEST_HAS_ABSL + + // Accepts pointer types, particularly: + // const char* + // char* + // const wchar_t* + // wchar_t* + template + bool MatchAndExplain(CharType* s, MatchResultListener* listener) const { + return s != nullptr && MatchAndExplain(StringType(s), listener); + } + + // Matches anything that can convert to StringType. + // + // This is a template, not just a plain function with const StringType&, + // because absl::string_view has some interfering non-explicit constructors. + template + bool MatchAndExplain(const MatcheeStringType& s, + MatchResultListener* /* listener */) const { + const StringType& s2(s); + return s2.length() >= suffix_.length() && + s2.substr(s2.length() - suffix_.length()) == suffix_; + } + + void DescribeTo(::std::ostream* os) const { + *os << "ends with "; + UniversalPrint(suffix_, os); + } + + void DescribeNegationTo(::std::ostream* os) const { + *os << "doesn't end with "; + UniversalPrint(suffix_, os); + } + + private: + const StringType suffix_; + + GTEST_DISALLOW_ASSIGN_(EndsWithMatcher); +}; + +// Implements a matcher that compares the two fields of a 2-tuple +// using one of the ==, <=, <, etc, operators. The two fields being +// compared don't have to have the same type. +// +// The matcher defined here is polymorphic (for example, Eq() can be +// used to match a std::tuple, a std::tuple, +// etc). Therefore we use a template type conversion operator in the +// implementation. +template +class PairMatchBase { + public: + template + operator Matcher<::std::tuple>() const { + return Matcher<::std::tuple>(new Impl&>); + } + template + operator Matcher&>() const { + return MakeMatcher(new Impl&>); + } + + private: + static ::std::ostream& GetDesc(::std::ostream& os) { // NOLINT + return os << D::Desc(); + } + + template + class Impl : public MatcherInterface { + public: + bool MatchAndExplain(Tuple args, + MatchResultListener* /* listener */) const override { + return Op()(::std::get<0>(args), ::std::get<1>(args)); + } + void DescribeTo(::std::ostream* os) const override { + *os << "are " << GetDesc; + } + void DescribeNegationTo(::std::ostream* os) const override { + *os << "aren't " << GetDesc; + } + }; +}; + +class Eq2Matcher : public PairMatchBase { + public: + static const char* Desc() { return "an equal pair"; } +}; +class Ne2Matcher : public PairMatchBase { + public: + static const char* Desc() { return "an unequal pair"; } +}; +class Lt2Matcher : public PairMatchBase { + public: + static const char* Desc() { return "a pair where the first < the second"; } +}; +class Gt2Matcher : public PairMatchBase { + public: + static const char* Desc() { return "a pair where the first > the second"; } +}; +class Le2Matcher : public PairMatchBase { + public: + static const char* Desc() { return "a pair where the first <= the second"; } +}; +class Ge2Matcher : public PairMatchBase { + public: + static const char* Desc() { return "a pair where the first >= the second"; } +}; + +// Implements the Not(...) matcher for a particular argument type T. +// We do not nest it inside the NotMatcher class template, as that +// will prevent different instantiations of NotMatcher from sharing +// the same NotMatcherImpl class. +template +class NotMatcherImpl : public MatcherInterface { + public: + explicit NotMatcherImpl(const Matcher& matcher) + : matcher_(matcher) {} + + bool MatchAndExplain(const T& x, + MatchResultListener* listener) const override { + return !matcher_.MatchAndExplain(x, listener); + } + + void DescribeTo(::std::ostream* os) const override { + matcher_.DescribeNegationTo(os); + } + + void DescribeNegationTo(::std::ostream* os) const override { + matcher_.DescribeTo(os); + } + + private: + const Matcher matcher_; + + GTEST_DISALLOW_ASSIGN_(NotMatcherImpl); +}; + +// Implements the Not(m) matcher, which matches a value that doesn't +// match matcher m. +template +class NotMatcher { + public: + explicit NotMatcher(InnerMatcher matcher) : matcher_(matcher) {} + + // This template type conversion operator allows Not(m) to be used + // to match any type m can match. + template + operator Matcher() const { + return Matcher(new NotMatcherImpl(SafeMatcherCast(matcher_))); + } + + private: + InnerMatcher matcher_; + + GTEST_DISALLOW_ASSIGN_(NotMatcher); +}; + +// Implements the AllOf(m1, m2) matcher for a particular argument type +// T. We do not nest it inside the BothOfMatcher class template, as +// that will prevent different instantiations of BothOfMatcher from +// sharing the same BothOfMatcherImpl class. +template +class AllOfMatcherImpl : public MatcherInterface { + public: + explicit AllOfMatcherImpl(std::vector > matchers) + : matchers_(std::move(matchers)) {} + + void DescribeTo(::std::ostream* os) const override { + *os << "("; + for (size_t i = 0; i < matchers_.size(); ++i) { + if (i != 0) *os << ") and ("; + matchers_[i].DescribeTo(os); + } + *os << ")"; + } + + void DescribeNegationTo(::std::ostream* os) const override { + *os << "("; + for (size_t i = 0; i < matchers_.size(); ++i) { + if (i != 0) *os << ") or ("; + matchers_[i].DescribeNegationTo(os); + } + *os << ")"; + } + + bool MatchAndExplain(const T& x, + MatchResultListener* listener) const override { + // If either matcher1_ or matcher2_ doesn't match x, we only need + // to explain why one of them fails. + std::string all_match_result; + + for (size_t i = 0; i < matchers_.size(); ++i) { + StringMatchResultListener slistener; + if (matchers_[i].MatchAndExplain(x, &slistener)) { + if (all_match_result.empty()) { + all_match_result = slistener.str(); + } else { + std::string result = slistener.str(); + if (!result.empty()) { + all_match_result += ", and "; + all_match_result += result; + } + } + } else { + *listener << slistener.str(); + return false; + } + } + + // Otherwise we need to explain why *both* of them match. + *listener << all_match_result; + return true; + } + + private: + const std::vector > matchers_; + + GTEST_DISALLOW_ASSIGN_(AllOfMatcherImpl); +}; + +// VariadicMatcher is used for the variadic implementation of +// AllOf(m_1, m_2, ...) and AnyOf(m_1, m_2, ...). +// CombiningMatcher is used to recursively combine the provided matchers +// (of type Args...). +template