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Posted to commits@hawq.apache.org by hu...@apache.org on 2016/05/09 10:12:20 UTC
[35/52] [abbrv] [partial] incubator-hawq git commit: HAWQ-707. Remove
gtest/gmock dependency from libyarn/libhdfs3
http://git-wip-us.apache.org/repos/asf/incubator-hawq/blob/a5b68bab/depends/googletest/googlemock/include/gmock/gmock-matchers.h
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diff --git a/depends/googletest/googlemock/include/gmock/gmock-matchers.h b/depends/googletest/googlemock/include/gmock/gmock-matchers.h
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--- a/depends/googletest/googlemock/include/gmock/gmock-matchers.h
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@@ -1,4399 +0,0 @@
-// 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 implements some commonly used argument matchers. More
-// matchers can be defined by the user implementing the
-// MatcherInterface<T> interface if necessary.
-
-#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_MATCHERS_H_
-#define GMOCK_INCLUDE_GMOCK_GMOCK_MATCHERS_H_
-
-#include <math.h>
-#include <algorithm>
-#include <iterator>
-#include <limits>
-#include <ostream> // NOLINT
-#include <sstream>
-#include <string>
-#include <utility>
-#include <vector>
-
-#include "gmock/internal/gmock-internal-utils.h"
-#include "gmock/internal/gmock-port.h"
-#include "gtest/gtest.h"
-
-#if GTEST_HAS_STD_INITIALIZER_LIST_
-# include <initializer_list> // NOLINT -- must be after gtest.h
-#endif
-
-namespace testing {
-
-// To implement a matcher Foo for type T, define:
-// 1. a class FooMatcherImpl that implements the
-// MatcherInterface<T> interface, and
-// 2. a factory function that creates a Matcher<T> 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.
-
-// MatchResultListener is an abstract class. Its << operator can be
-// used by a matcher to explain why a value matches or doesn't match.
-//
-// TODO(wan@google.com): add method
-// bool InterestedInWhy(bool result) const;
-// to indicate whether the listener is interested in why the match
-// result is 'result'.
-class MatchResultListener {
- public:
- // Creates a listener object with the given underlying ostream. The
- // listener does not own the ostream, and does not dereference it
- // in the constructor or destructor.
- explicit MatchResultListener(::std::ostream* os) : stream_(os) {}
- virtual ~MatchResultListener() = 0; // Makes this class abstract.
-
- // Streams x to the underlying ostream; does nothing if the ostream
- // is NULL.
- template <typename T>
- MatchResultListener& operator<<(const T& x) {
- if (stream_ != NULL)
- *stream_ << x;
- return *this;
- }
-
- // Returns the underlying ostream.
- ::std::ostream* stream() { return stream_; }
-
- // Returns true iff the listener is interested in an explanation of
- // the match result. A matcher's MatchAndExplain() method can use
- // this information to avoid generating the explanation when no one
- // intends to hear it.
- bool IsInterested() const { return stream_ != NULL; }
-
- private:
- ::std::ostream* const stream_;
-
- GTEST_DISALLOW_COPY_AND_ASSIGN_(MatchResultListener);
-};
-
-inline MatchResultListener::~MatchResultListener() {
-}
-
-// An instance of a subclass of this knows how to describe itself as a
-// matcher.
-class MatcherDescriberInterface {
- public:
- virtual ~MatcherDescriberInterface() {}
-
- // Describes this matcher to an ostream. The function should print
- // a verb phrase that describes the property a value matching this
- // matcher should have. The subject of the verb phrase is the value
- // being matched. For example, the DescribeTo() method of the Gt(7)
- // matcher prints "is greater than 7".
- virtual void DescribeTo(::std::ostream* os) const = 0;
-
- // Describes the negation of this matcher to an ostream. For
- // example, if the description of this matcher is "is greater than
- // 7", the negated description could be "is not greater than 7".
- // You are not required to override this when implementing
- // MatcherInterface, but it is highly advised so that your matcher
- // can produce good error messages.
- virtual void DescribeNegationTo(::std::ostream* os) const {
- *os << "not (";
- DescribeTo(os);
- *os << ")";
- }
-};
-
-// The implementation of a matcher.
-template <typename T>
-class MatcherInterface : public MatcherDescriberInterface {
- public:
- // Returns true iff the matcher matches x; also explains the match
- // result to 'listener' if necessary (see the next paragraph), in
- // the form of a non-restrictive relative clause ("which ...",
- // "whose ...", etc) that describes x. For example, the
- // MatchAndExplain() method of the Pointee(...) matcher should
- // generate an explanation like "which points to ...".
- //
- // Implementations of MatchAndExplain() should add an explanation of
- // the match result *if and only if* they can provide additional
- // information that's not already present (or not obvious) in the
- // print-out of x and the matcher's description. Whether the match
- // succeeds is not a factor in deciding whether an explanation is
- // needed, as sometimes the caller needs to print a failure message
- // when the match succeeds (e.g. when the matcher is used inside
- // Not()).
- //
- // For example, a "has at least 10 elements" matcher should explain
- // what the actual element count is, regardless of the match result,
- // as it is useful information to the reader; on the other hand, an
- // "is empty" matcher probably only needs to explain what the actual
- // size is when the match fails, as it's redundant to say that the
- // size is 0 when the value is already known to be empty.
- //
- // You should override this method when defining a new matcher.
- //
- // It's the responsibility of the caller (Google Mock) to guarantee
- // that 'listener' is not NULL. This helps to simplify a matcher's
- // implementation when it doesn't care about the performance, as it
- // can talk to 'listener' without checking its validity first.
- // However, in order to implement dummy listeners efficiently,
- // listener->stream() may be NULL.
- virtual bool MatchAndExplain(T x, MatchResultListener* listener) const = 0;
-
- // Inherits these methods from MatcherDescriberInterface:
- // virtual void DescribeTo(::std::ostream* os) const = 0;
- // virtual void DescribeNegationTo(::std::ostream* os) const;
-};
-
-// 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.
- internal::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);
-};
-
-namespace internal {
-
-struct AnyEq {
- template <typename A, typename B>
- bool operator()(const A& a, const B& b) const { return a == b; }
-};
-struct AnyNe {
- template <typename A, typename B>
- bool operator()(const A& a, const B& b) const { return a != b; }
-};
-struct AnyLt {
- template <typename A, typename B>
- bool operator()(const A& a, const B& b) const { return a < b; }
-};
-struct AnyGt {
- template <typename A, typename B>
- bool operator()(const A& a, const B& b) const { return a > b; }
-};
-struct AnyLe {
- template <typename A, typename B>
- bool operator()(const A& a, const B& b) const { return a <= b; }
-};
-struct AnyGe {
- template <typename A, typename B>
- bool operator()(const A& a, const B& b) const { return a >= b; }
-};
-
-// A match result listener that ignores the explanation.
-class DummyMatchResultListener : public MatchResultListener {
- public:
- DummyMatchResultListener() : MatchResultListener(NULL) {}
-
- private:
- GTEST_DISALLOW_COPY_AND_ASSIGN_(DummyMatchResultListener);
-};
-
-// A match result listener that forwards the explanation to a given
-// ostream. The difference between this and MatchResultListener is
-// that the former is concrete.
-class StreamMatchResultListener : public MatchResultListener {
- public:
- explicit StreamMatchResultListener(::std::ostream* os)
- : MatchResultListener(os) {}
-
- private:
- GTEST_DISALLOW_COPY_AND_ASSIGN_(StreamMatchResultListener);
-};
-
-// An internal class for implementing Matcher<T>, which will derive
-// from it. We put functionalities common to all Matcher<T>
-// specializations here to avoid code duplication.
-template <typename T>
-class MatcherBase {
- public:
- // Returns true iff the matcher matches x; also explains the match
- // result to 'listener'.
- bool MatchAndExplain(T x, MatchResultListener* listener) const {
- return impl_->MatchAndExplain(x, listener);
- }
-
- // Returns true iff this matcher matches x.
- bool Matches(T x) const {
- DummyMatchResultListener dummy;
- return MatchAndExplain(x, &dummy);
- }
-
- // Describes this matcher to an ostream.
- void DescribeTo(::std::ostream* os) const { impl_->DescribeTo(os); }
-
- // Describes the negation of this matcher to an ostream.
- void DescribeNegationTo(::std::ostream* os) const {
- impl_->DescribeNegationTo(os);
- }
-
- // Explains why x matches, or doesn't match, the matcher.
- void ExplainMatchResultTo(T x, ::std::ostream* os) const {
- StreamMatchResultListener listener(os);
- MatchAndExplain(x, &listener);
- }
-
- // Returns the describer for this matcher object; retains ownership
- // of the describer, which is only guaranteed to be alive when
- // this matcher object is alive.
- const MatcherDescriberInterface* GetDescriber() const {
- return impl_.get();
- }
-
- protected:
- MatcherBase() {}
-
- // Constructs a matcher from its implementation.
- explicit MatcherBase(const MatcherInterface<T>* impl)
- : impl_(impl) {}
-
- virtual ~MatcherBase() {}
-
- private:
- // shared_ptr (util/gtl/shared_ptr.h) and linked_ptr have similar
- // interfaces. The former dynamically allocates a chunk of memory
- // to hold the reference count, while the latter tracks all
- // references using a circular linked list without allocating
- // memory. It has been observed that linked_ptr performs better in
- // typical scenarios. However, shared_ptr can out-perform
- // linked_ptr when there are many more uses of the copy constructor
- // than the default constructor.
- //
- // If performance becomes a problem, we should see if using
- // shared_ptr helps.
- ::testing::internal::linked_ptr<const MatcherInterface<T> > impl_;
-};
-
-} // namespace internal
-
-// A Matcher<T> is a copyable and IMMUTABLE (except by assignment)
-// object that can check whether a value of type T matches. The
-// implementation of Matcher<T> is just a linked_ptr to const
-// MatcherInterface<T>, so copying is fairly cheap. Don't inherit
-// from Matcher!
-template <typename T>
-class Matcher : public internal::MatcherBase<T> {
- public:
- // Constructs a null matcher. Needed for storing Matcher objects in STL
- // containers. A default-constructed matcher is not yet initialized. You
- // cannot use it until a valid value has been assigned to it.
- explicit Matcher() {} // NOLINT
-
- // Constructs a matcher from its implementation.
- explicit Matcher(const MatcherInterface<T>* impl)
- : internal::MatcherBase<T>(impl) {}
-
- // Implicit constructor here allows people to write
- // EXPECT_CALL(foo, Bar(5)) instead of EXPECT_CALL(foo, Bar(Eq(5))) sometimes
- Matcher(T value); // NOLINT
-};
-
-// The following two specializations allow the user to write str
-// instead of Eq(str) and "foo" instead of Eq("foo") when a string
-// matcher is expected.
-template <>
-class GTEST_API_ Matcher<const internal::string&>
- : public internal::MatcherBase<const internal::string&> {
- public:
- Matcher() {}
-
- explicit Matcher(const MatcherInterface<const internal::string&>* impl)
- : internal::MatcherBase<const internal::string&>(impl) {}
-
- // Allows the user to write str instead of Eq(str) sometimes, where
- // str is a string object.
- Matcher(const internal::string& s); // NOLINT
-
- // Allows the user to write "foo" instead of Eq("foo") sometimes.
- Matcher(const char* s); // NOLINT
-};
-
-template <>
-class GTEST_API_ Matcher<internal::string>
- : public internal::MatcherBase<internal::string> {
- public:
- Matcher() {}
-
- explicit Matcher(const MatcherInterface<internal::string>* impl)
- : internal::MatcherBase<internal::string>(impl) {}
-
- // Allows the user to write str instead of Eq(str) sometimes, where
- // str is a string object.
- Matcher(const internal::string& s); // NOLINT
-
- // Allows the user to write "foo" instead of Eq("foo") sometimes.
- Matcher(const char* s); // NOLINT
-};
-
-#if GTEST_HAS_STRING_PIECE_
-// The following two specializations allow the user to write str
-// instead of Eq(str) and "foo" instead of Eq("foo") when a StringPiece
-// matcher is expected.
-template <>
-class GTEST_API_ Matcher<const StringPiece&>
- : public internal::MatcherBase<const StringPiece&> {
- public:
- Matcher() {}
-
- explicit Matcher(const MatcherInterface<const StringPiece&>* impl)
- : internal::MatcherBase<const StringPiece&>(impl) {}
-
- // Allows the user to write str instead of Eq(str) sometimes, where
- // str is a string object.
- Matcher(const internal::string& s); // NOLINT
-
- // Allows the user to write "foo" instead of Eq("foo") sometimes.
- Matcher(const char* s); // NOLINT
-
- // Allows the user to pass StringPieces directly.
- Matcher(StringPiece s); // NOLINT
-};
-
-template <>
-class GTEST_API_ Matcher<StringPiece>
- : public internal::MatcherBase<StringPiece> {
- public:
- Matcher() {}
-
- explicit Matcher(const MatcherInterface<StringPiece>* impl)
- : internal::MatcherBase<StringPiece>(impl) {}
-
- // Allows the user to write str instead of Eq(str) sometimes, where
- // str is a string object.
- Matcher(const internal::string& s); // NOLINT
-
- // Allows the user to write "foo" instead of Eq("foo") sometimes.
- Matcher(const char* s); // NOLINT
-
- // Allows the user to pass StringPieces directly.
- Matcher(StringPiece s); // NOLINT
-};
-#endif // GTEST_HAS_STRING_PIECE_
-
-// The PolymorphicMatcher class template makes it easy to implement a
-// polymorphic matcher (i.e. a matcher that can match values of more
-// than one type, e.g. Eq(n) and NotNull()).
-//
-// To define a polymorphic matcher, a user should provide an Impl
-// class that has a DescribeTo() method and a DescribeNegationTo()
-// method, and define a member function (or member function template)
-//
-// bool MatchAndExplain(const Value& value,
-// MatchResultListener* listener) const;
-//
-// See the definition of NotNull() for a complete example.
-template <class Impl>
-class PolymorphicMatcher {
- public:
- explicit PolymorphicMatcher(const Impl& an_impl) : impl_(an_impl) {}
-
- // Returns a mutable reference to the underlying matcher
- // implementation object.
- Impl& mutable_impl() { return impl_; }
-
- // Returns an immutable reference to the underlying matcher
- // implementation object.
- const Impl& impl() const { return impl_; }
-
- template <typename T>
- operator Matcher<T>() const {
- return Matcher<T>(new MonomorphicImpl<T>(impl_));
- }
-
- private:
- template <typename T>
- class MonomorphicImpl : public MatcherInterface<T> {
- public:
- explicit MonomorphicImpl(const Impl& impl) : impl_(impl) {}
-
- virtual void DescribeTo(::std::ostream* os) const {
- impl_.DescribeTo(os);
- }
-
- virtual void DescribeNegationTo(::std::ostream* os) const {
- impl_.DescribeNegationTo(os);
- }
-
- virtual bool MatchAndExplain(T x, MatchResultListener* listener) const {
- return impl_.MatchAndExplain(x, listener);
- }
-
- private:
- const Impl impl_;
-
- GTEST_DISALLOW_ASSIGN_(MonomorphicImpl);
- };
-
- Impl impl_;
-
- GTEST_DISALLOW_ASSIGN_(PolymorphicMatcher);
-};
-
-// Creates a matcher from its implementation. This is easier to use
-// than the Matcher<T> constructor as it doesn't require you to
-// explicitly write the template argument, e.g.
-//
-// MakeMatcher(foo);
-// vs
-// Matcher<const string&>(foo);
-template <typename T>
-inline Matcher<T> MakeMatcher(const MatcherInterface<T>* impl) {
- return Matcher<T>(impl);
-}
-
-// Creates a polymorphic matcher from its implementation. This is
-// easier to use than the PolymorphicMatcher<Impl> constructor as it
-// doesn't require you to explicitly write the template argument, e.g.
-//
-// MakePolymorphicMatcher(foo);
-// vs
-// PolymorphicMatcher<TypeOfFoo>(foo);
-template <class Impl>
-inline PolymorphicMatcher<Impl> MakePolymorphicMatcher(const Impl& impl) {
- return PolymorphicMatcher<Impl>(impl);
-}
-
-// 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 <typename T, typename M>
-class MatcherCastImpl {
- public:
- static Matcher<T> Cast(const M& polymorphic_matcher_or_value) {
- // M can be a polymorhic matcher, in which case we want to use
- // its conversion operator to create Matcher<T>. Or it can be a value
- // that should be passed to the Matcher<T>'s constructor.
- //
- // We can't call Matcher<T>(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<T> 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,
- BooleanConstant<
- internal::ImplicitlyConvertible<M, Matcher<T> >::value>());
- }
-
- private:
- static Matcher<T> CastImpl(const M& value, BooleanConstant<false>) {
- // M can't be implicitly converted to Matcher<T>, so M isn't a polymorphic
- // matcher. It must be a value then. Use direct initialization to create
- // a matcher.
- return Matcher<T>(ImplicitCast_<T>(value));
- }
-
- static Matcher<T> CastImpl(const M& polymorphic_matcher_or_value,
- BooleanConstant<true>) {
- // M is implicitly convertible to Matcher<T>, which means that either
- // M is a polymorhpic matcher or Matcher<T> 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<T> would require a chain of two user-defined conversions
- // (first to create T from M and then to create Matcher<T> from T).
- return polymorphic_matcher_or_value;
- }
-};
-
-// 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 <typename T, typename U>
-class MatcherCastImpl<T, Matcher<U> > {
- public:
- static Matcher<T> Cast(const Matcher<U>& source_matcher) {
- return Matcher<T>(new Impl(source_matcher));
- }
-
- private:
- class Impl : public MatcherInterface<T> {
- public:
- explicit Impl(const Matcher<U>& source_matcher)
- : source_matcher_(source_matcher) {}
-
- // We delegate the matching logic to the source matcher.
- virtual bool MatchAndExplain(T x, MatchResultListener* listener) const {
- return source_matcher_.MatchAndExplain(static_cast<U>(x), listener);
- }
-
- virtual void DescribeTo(::std::ostream* os) const {
- source_matcher_.DescribeTo(os);
- }
-
- virtual void DescribeNegationTo(::std::ostream* os) const {
- source_matcher_.DescribeNegationTo(os);
- }
-
- private:
- const Matcher<U> source_matcher_;
-
- GTEST_DISALLOW_ASSIGN_(Impl);
- };
-};
-
-// This even more specialized version is used for efficiently casting
-// a matcher to its own type.
-template <typename T>
-class MatcherCastImpl<T, Matcher<T> > {
- public:
- static Matcher<T> Cast(const Matcher<T>& matcher) { return matcher; }
-};
-
-} // namespace internal
-
-// In order to be safe and clear, casting between different matcher
-// types is done explicitly via MatcherCast<T>(m), which takes a
-// matcher m and returns a Matcher<T>. It compiles only when T can be
-// statically converted to the argument type of m.
-template <typename T, typename M>
-inline Matcher<T> MatcherCast(const M& matcher) {
- return internal::MatcherCastImpl<T, M>::Cast(matcher);
-}
-
-// Implements SafeMatcherCast().
-//
-// We use an intermediate class to do the actual safe casting as Nokia's
-// Symbian compiler cannot decide between
-// template <T, M> ... (M) and
-// template <T, U> ... (const Matcher<U>&)
-// for function templates but can for member function templates.
-template <typename T>
-class SafeMatcherCastImpl {
- public:
- // This overload handles polymorphic matchers and values only since
- // monomorphic matchers are handled by the next one.
- template <typename M>
- static inline Matcher<T> Cast(const M& polymorphic_matcher_or_value) {
- return internal::MatcherCastImpl<T, M>::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<U> to a Matcher<T> (i.e. Matcher is
- // contravariant): just keep a copy of the original Matcher<U>, convert the
- // argument from type T to U, and then pass it to the underlying Matcher<U>.
- // The only exception is when U is a reference and T is not, as the
- // underlying Matcher<U> may be interested in the argument's address, which
- // is not preserved in the conversion from T to U.
- template <typename U>
- static inline Matcher<T> Cast(const Matcher<U>& matcher) {
- // Enforce that T can be implicitly converted to U.
- GTEST_COMPILE_ASSERT_((internal::ImplicitlyConvertible<T, U>::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_(
- internal::is_reference<T>::value || !internal::is_reference<U>::value,
- cannot_convert_non_referentce_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<RawT, RawU>::value),
- conversion_of_arithmetic_types_must_be_lossless);
- return MatcherCast<T>(matcher);
- }
-};
-
-template <typename T, typename M>
-inline Matcher<T> SafeMatcherCast(const M& polymorphic_matcher) {
- return SafeMatcherCastImpl<T>::Cast(polymorphic_matcher);
-}
-
-// A<T>() returns a matcher that matches any value of type T.
-template <typename T>
-Matcher<T> 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 internal::string& explanation,
- ::std::ostream* os) {
- if (explanation != "" && os != NULL) {
- *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 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("<(") == 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 <typename Value, typename T>
-bool MatchPrintAndExplain(Value& value, const Matcher<T>& 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 string& type_name = GetTypeName<Value>();
- 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 <size_t N>
-class TuplePrefix {
- public:
- // TuplePrefix<N>::Matches(matcher_tuple, value_tuple) returns true
- // iff the first N fields of matcher_tuple matches the first N
- // fields of value_tuple, respectively.
- template <typename MatcherTuple, typename ValueTuple>
- static bool Matches(const MatcherTuple& matcher_tuple,
- const ValueTuple& value_tuple) {
- return TuplePrefix<N - 1>::Matches(matcher_tuple, value_tuple)
- && get<N - 1>(matcher_tuple).Matches(get<N - 1>(value_tuple));
- }
-
- // TuplePrefix<N>::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 <typename MatcherTuple, typename ValueTuple>
- static void ExplainMatchFailuresTo(const MatcherTuple& matchers,
- const ValueTuple& values,
- ::std::ostream* os) {
- // First, describes failures in the first N - 1 fields.
- TuplePrefix<N - 1>::ExplainMatchFailuresTo(matchers, values, os);
-
- // Then describes the failure (if any) in the (N - 1)-th (0-based)
- // field.
- typename tuple_element<N - 1, MatcherTuple>::type matcher =
- get<N - 1>(matchers);
- typedef typename tuple_element<N - 1, ValueTuple>::type Value;
- Value value = get<N - 1>(values);
- StringMatchResultListener listener;
- if (!matcher.MatchAndExplain(value, &listener)) {
- // TODO(wan): include in the message the name of the parameter
- // as used in MOCK_METHOD*() when possible.
- *os << " Expected arg #" << N - 1 << ": ";
- get<N - 1>(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 <typename MatcherTuple, typename ValueTuple>
- static bool Matches(const MatcherTuple& /* matcher_tuple */,
- const ValueTuple& /* value_tuple */) {
- return true;
- }
-
- template <typename MatcherTuple, typename ValueTuple>
- static void ExplainMatchFailuresTo(const MatcherTuple& /* matchers */,
- const ValueTuple& /* values */,
- ::std::ostream* /* os */) {}
-};
-
-// TupleMatches(matcher_tuple, value_tuple) returns true iff 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 <typename MatcherTuple, typename ValueTuple>
-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_(tuple_size<MatcherTuple>::value ==
- tuple_size<ValueTuple>::value,
- matcher_and_value_have_different_numbers_of_fields);
- return TuplePrefix<tuple_size<ValueTuple>::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 <typename MatcherTuple, typename ValueTuple>
-void ExplainMatchFailureTupleTo(const MatcherTuple& matchers,
- const ValueTuple& values,
- ::std::ostream* os) {
- TuplePrefix<tuple_size<MatcherTuple>::value>::ExplainMatchFailuresTo(
- matchers, values, os);
-}
-
-// TransformTupleValues and its helper.
-//
-// TransformTupleValuesHelper hides the internal machinery that
-// TransformTupleValues uses to implement a tuple traversal.
-template <typename Tuple, typename Func, typename OutIter>
-class TransformTupleValuesHelper {
- private:
- typedef ::testing::tuple_size<Tuple> 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<Tuple, TupleSize::value>()(f, t, out);
- }
-
- private:
- template <typename Tup, size_t kRemainingSize>
- struct IterateOverTuple {
- OutIter operator() (Func f, const Tup& t, OutIter out) const {
- *out++ = f(::testing::get<TupleSize::value - kRemainingSize>(t));
- return IterateOverTuple<Tup, kRemainingSize - 1>()(f, t, out);
- }
- };
- template <typename Tup>
- struct IterateOverTuple<Tup, 0> {
- 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 <typename Tuple, typename Func, typename OutIter>
-OutIter TransformTupleValues(Func f, const Tuple& t, OutIter out) {
- return TransformTupleValuesHelper<Tuple, Func, OutIter>::Run(f, t, out);
-}
-
-// Implements A<T>().
-template <typename T>
-class AnyMatcherImpl : public MatcherInterface<T> {
- public:
- virtual bool MatchAndExplain(
- T /* x */, MatchResultListener* /* listener */) const { return true; }
- virtual void DescribeTo(::std::ostream* os) const { *os << "is anything"; }
- virtual void DescribeNegationTo(::std::ostream* os) const {
- // This is mostly for completeness' safe, as it's not very useful
- // to write Not(A<bool>()). 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<T> for any
-// type T.
-class AnythingMatcher {
- public:
- template <typename T>
- operator Matcher<T>() const { return A<T>(); }
-};
-
-// Implements a matcher that compares a given value with a
-// pre-supplied value using one of the ==, <=, <, etc, operators. The
-// two values being compared don't have to have the same type.
-//
-// The matcher defined here is polymorphic (for example, Eq(5) can be
-// used to match an int, a short, a double, etc). Therefore we use
-// a template type conversion operator in the implementation.
-//
-// The following template definition assumes that the Rhs parameter is
-// a "bare" type (i.e. neither 'const T' nor 'T&').
-template <typename D, typename Rhs, typename Op>
-class ComparisonBase {
- public:
- explicit ComparisonBase(const Rhs& rhs) : rhs_(rhs) {}
- template <typename Lhs>
- operator Matcher<Lhs>() const {
- return MakeMatcher(new Impl<Lhs>(rhs_));
- }
-
- private:
- template <typename Lhs>
- class Impl : public MatcherInterface<Lhs> {
- public:
- explicit Impl(const Rhs& rhs) : rhs_(rhs) {}
- virtual bool MatchAndExplain(
- Lhs lhs, MatchResultListener* /* listener */) const {
- return Op()(lhs, rhs_);
- }
- virtual void DescribeTo(::std::ostream* os) const {
- *os << D::Desc() << " ";
- UniversalPrint(rhs_, os);
- }
- virtual void DescribeNegationTo(::std::ostream* os) const {
- *os << D::NegatedDesc() << " ";
- UniversalPrint(rhs_, os);
- }
- private:
- Rhs rhs_;
- GTEST_DISALLOW_ASSIGN_(Impl);
- };
- Rhs rhs_;
- GTEST_DISALLOW_ASSIGN_(ComparisonBase);
-};
-
-template <typename Rhs>
-class EqMatcher : public ComparisonBase<EqMatcher<Rhs>, Rhs, AnyEq> {
- public:
- explicit EqMatcher(const Rhs& rhs)
- : ComparisonBase<EqMatcher<Rhs>, Rhs, AnyEq>(rhs) { }
- static const char* Desc() { return "is equal to"; }
- static const char* NegatedDesc() { return "isn't equal to"; }
-};
-template <typename Rhs>
-class NeMatcher : public ComparisonBase<NeMatcher<Rhs>, Rhs, AnyNe> {
- public:
- explicit NeMatcher(const Rhs& rhs)
- : ComparisonBase<NeMatcher<Rhs>, Rhs, AnyNe>(rhs) { }
- static const char* Desc() { return "isn't equal to"; }
- static const char* NegatedDesc() { return "is equal to"; }
-};
-template <typename Rhs>
-class LtMatcher : public ComparisonBase<LtMatcher<Rhs>, Rhs, AnyLt> {
- public:
- explicit LtMatcher(const Rhs& rhs)
- : ComparisonBase<LtMatcher<Rhs>, Rhs, AnyLt>(rhs) { }
- static const char* Desc() { return "is <"; }
- static const char* NegatedDesc() { return "isn't <"; }
-};
-template <typename Rhs>
-class GtMatcher : public ComparisonBase<GtMatcher<Rhs>, Rhs, AnyGt> {
- public:
- explicit GtMatcher(const Rhs& rhs)
- : ComparisonBase<GtMatcher<Rhs>, Rhs, AnyGt>(rhs) { }
- static const char* Desc() { return "is >"; }
- static const char* NegatedDesc() { return "isn't >"; }
-};
-template <typename Rhs>
-class LeMatcher : public ComparisonBase<LeMatcher<Rhs>, Rhs, AnyLe> {
- public:
- explicit LeMatcher(const Rhs& rhs)
- : ComparisonBase<LeMatcher<Rhs>, Rhs, AnyLe>(rhs) { }
- static const char* Desc() { return "is <="; }
- static const char* NegatedDesc() { return "isn't <="; }
-};
-template <typename Rhs>
-class GeMatcher : public ComparisonBase<GeMatcher<Rhs>, Rhs, AnyGe> {
- public:
- explicit GeMatcher(const Rhs& rhs)
- : ComparisonBase<GeMatcher<Rhs>, Rhs, AnyGe>(rhs) { }
- static const char* Desc() { return "is >="; }
- static const char* NegatedDesc() { return "isn't >="; }
-};
-
-// Implements the polymorphic IsNull() matcher, which matches any raw or smart
-// pointer that is NULL.
-class IsNullMatcher {
- public:
- template <typename Pointer>
- bool MatchAndExplain(const Pointer& p,
- MatchResultListener* /* listener */) const {
-#if GTEST_LANG_CXX11
- return p == nullptr;
-#else // GTEST_LANG_CXX11
- return GetRawPointer(p) == NULL;
-#endif // GTEST_LANG_CXX11
- }
-
- 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 <typename Pointer>
- bool MatchAndExplain(const Pointer& p,
- MatchResultListener* /* listener */) const {
-#if GTEST_LANG_CXX11
- return p != nullptr;
-#else // GTEST_LANG_CXX11
- return GetRawPointer(p) != NULL;
-#endif // GTEST_LANG_CXX11
- }
-
- 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<int> m1 = Ref(n); // This won't compile.
-// Matcher<int&> m2 = Ref(n); // This will compile.
-template <typename T>
-class RefMatcher;
-
-template <typename T>
-class RefMatcher<T&> {
- // 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 <typename Super>
- operator Matcher<Super&>() 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<Super>(object_));
- }
-
- private:
- template <typename Super>
- class Impl : public MatcherInterface<Super&> {
- public:
- explicit Impl(Super& x) : object_(x) {} // NOLINT
-
- // MatchAndExplain() takes a Super& (as opposed to const Super&)
- // in order to match the interface MatcherInterface<Super&>.
- virtual bool MatchAndExplain(
- Super& x, MatchResultListener* listener) const {
- *listener << "which is located @" << static_cast<const void*>(&x);
- return &x == &object_;
- }
-
- virtual void DescribeTo(::std::ostream* os) const {
- *os << "references the variable ";
- UniversalPrinter<Super&>::Print(object_, os);
- }
-
- virtual void DescribeNegationTo(::std::ostream* os) const {
- *os << "does not reference the variable ";
- UniversalPrinter<Super&>::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 <typename StringType>
-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 <typename StringType>
-class StrEqualityMatcher {
- public:
- StrEqualityMatcher(const StringType& str, bool expect_eq,
- bool case_sensitive)
- : string_(str), expect_eq_(expect_eq), case_sensitive_(case_sensitive) {}
-
- // Accepts pointer types, particularly:
- // const char*
- // char*
- // const wchar_t*
- // wchar_t*
- template <typename CharType>
- bool MatchAndExplain(CharType* s, MatchResultListener* listener) const {
- if (s == NULL) {
- 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 StringPiece has some interfering non-explicit constructors.
- template <typename MatcheeStringType>
- 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<T> as long as T can be converted to a
-// string.
-template <typename StringType>
-class HasSubstrMatcher {
- public:
- explicit HasSubstrMatcher(const StringType& substring)
- : substring_(substring) {}
-
- // Accepts pointer types, particularly:
- // const char*
- // char*
- // const wchar_t*
- // wchar_t*
- template <typename CharType>
- bool MatchAndExplain(CharType* s, MatchResultListener* listener) const {
- return s != NULL && MatchAndExplain(StringType(s), listener);
- }
-
- // Matches anything that can convert to StringType.
- //
- // This is a template, not just a plain function with const StringType&,
- // because StringPiece has some interfering non-explicit constructors.
- template <typename MatcheeStringType>
- 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<T> as long as T can be converted to a
-// string.
-template <typename StringType>
-class StartsWithMatcher {
- public:
- explicit StartsWithMatcher(const StringType& prefix) : prefix_(prefix) {
- }
-
- // Accepts pointer types, particularly:
- // const char*
- // char*
- // const wchar_t*
- // wchar_t*
- template <typename CharType>
- bool MatchAndExplain(CharType* s, MatchResultListener* listener) const {
- return s != NULL && MatchAndExplain(StringType(s), listener);
- }
-
- // Matches anything that can convert to StringType.
- //
- // This is a template, not just a plain function with const StringType&,
- // because StringPiece has some interfering non-explicit constructors.
- template <typename MatcheeStringType>
- 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<T> as long as T can be converted to a
-// string.
-template <typename StringType>
-class EndsWithMatcher {
- public:
- explicit EndsWithMatcher(const StringType& suffix) : suffix_(suffix) {}
-
- // Accepts pointer types, particularly:
- // const char*
- // char*
- // const wchar_t*
- // wchar_t*
- template <typename CharType>
- bool MatchAndExplain(CharType* s, MatchResultListener* listener) const {
- return s != NULL && MatchAndExplain(StringType(s), listener);
- }
-
- // Matches anything that can convert to StringType.
- //
- // This is a template, not just a plain function with const StringType&,
- // because StringPiece has some interfering non-explicit constructors.
- template <typename MatcheeStringType>
- 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 polymorphic matchers MatchesRegex(regex) and
-// ContainsRegex(regex), which can be used as a Matcher<T> as long as
-// T can be converted to a string.
-class MatchesRegexMatcher {
- public:
- MatchesRegexMatcher(const RE* regex, bool full_match)
- : regex_(regex), full_match_(full_match) {}
-
- // Accepts pointer types, particularly:
- // const char*
- // char*
- // const wchar_t*
- // wchar_t*
- template <typename CharType>
- bool MatchAndExplain(CharType* s, MatchResultListener* listener) const {
- return s != NULL && MatchAndExplain(internal::string(s), listener);
- }
-
- // Matches anything that can convert to internal::string.
- //
- // This is a template, not just a plain function with const internal::string&,
- // because StringPiece has some interfering non-explicit constructors.
- template <class MatcheeStringType>
- bool MatchAndExplain(const MatcheeStringType& s,
- MatchResultListener* /* listener */) const {
- const internal::string& s2(s);
- return full_match_ ? RE::FullMatch(s2, *regex_) :
- RE::PartialMatch(s2, *regex_);
- }
-
- void DescribeTo(::std::ostream* os) const {
- *os << (full_match_ ? "matches" : "contains")
- << " regular expression ";
- UniversalPrinter<internal::string>::Print(regex_->pattern(), os);
- }
-
- void DescribeNegationTo(::std::ostream* os) const {
- *os << "doesn't " << (full_match_ ? "match" : "contain")
- << " regular expression ";
- UniversalPrinter<internal::string>::Print(regex_->pattern(), os);
- }
-
- private:
- const internal::linked_ptr<const RE> regex_;
- const bool full_match_;
-
- GTEST_DISALLOW_ASSIGN_(MatchesRegexMatcher);
-};
-
-// 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 tuple<int, short>, a tuple<const long&, double>,
-// etc). Therefore we use a template type conversion operator in the
-// implementation.
-template <typename D, typename Op>
-class PairMatchBase {
- public:
- template <typename T1, typename T2>
- operator Matcher< ::testing::tuple<T1, T2> >() const {
- return MakeMatcher(new Impl< ::testing::tuple<T1, T2> >);
- }
- template <typename T1, typename T2>
- operator Matcher<const ::testing::tuple<T1, T2>&>() const {
- return MakeMatcher(new Impl<const ::testing::tuple<T1, T2>&>);
- }
-
- private:
- static ::std::ostream& GetDesc(::std::ostream& os) { // NOLINT
- return os << D::Desc();
- }
-
- template <typename Tuple>
- class Impl : public MatcherInterface<Tuple> {
- public:
- virtual bool MatchAndExplain(
- Tuple args,
- MatchResultListener* /* listener */) const {
- return Op()(::testing::get<0>(args), ::testing::get<1>(args));
- }
- virtual void DescribeTo(::std::ostream* os) const {
- *os << "are " << GetDesc;
- }
- virtual void DescribeNegationTo(::std::ostream* os) const {
- *os << "aren't " << GetDesc;
- }
- };
-};
-
-class Eq2Matcher : public PairMatchBase<Eq2Matcher, AnyEq> {
- public:
- static const char* Desc() { return "an equal pair"; }
-};
-class Ne2Matcher : public PairMatchBase<Ne2Matcher, AnyNe> {
- public:
- static const char* Desc() { return "an unequal pair"; }
-};
-class Lt2Matcher : public PairMatchBase<Lt2Matcher, AnyLt> {
- public:
- static const char* Desc() { return "a pair where the first < the second"; }
-};
-class Gt2Matcher : public PairMatchBase<Gt2Matcher, AnyGt> {
- public:
- static const char* Desc() { return "a pair where the first > the second"; }
-};
-class Le2Matcher : public PairMatchBase<Le2Matcher, AnyLe> {
- public:
- static const char* Desc() { return "a pair where the first <= the second"; }
-};
-class Ge2Matcher : public PairMatchBase<Ge2Matcher, AnyGe> {
- 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<T> class.
-template <typename T>
-class NotMatcherImpl : public MatcherInterface<T> {
- public:
- explicit NotMatcherImpl(const Matcher<T>& matcher)
- : matcher_(matcher) {}
-
- virtual bool MatchAndExplain(T x, MatchResultListener* listener) const {
- return !matcher_.MatchAndExplain(x, listener);
- }
-
- virtual void DescribeTo(::std::ostream* os) const {
- matcher_.DescribeNegationTo(os);
- }
-
- virtual void DescribeNegationTo(::std::ostream* os) const {
- matcher_.DescribeTo(os);
- }
-
- private:
- const Matcher<T> matcher_;
-
- GTEST_DISALLOW_ASSIGN_(NotMatcherImpl);
-};
-
-// Implements the Not(m) matcher, which matches a value that doesn't
-// match matcher m.
-template <typename InnerMatcher>
-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 <typename T>
- operator Matcher<T>() const {
- return Matcher<T>(new NotMatcherImpl<T>(SafeMatcherCast<T>(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<T> class.
-template <typename T>
-class BothOfMatcherImpl : public MatcherInterface<T> {
- public:
- BothOfMatcherImpl(const Matcher<T>& matcher1, const Matcher<T>& matcher2)
- : matcher1_(matcher1), matcher2_(matcher2) {}
-
- virtual void DescribeTo(::std::ostream* os) const {
- *os << "(";
- matcher1_.DescribeTo(os);
- *os << ") and (";
- matcher2_.DescribeTo(os);
- *os << ")";
- }
-
- virtual void DescribeNegationTo(::std::ostream* os) const {
- *os << "(";
- matcher1_.DescribeNegationTo(os);
- *os << ") or (";
- matcher2_.DescribeNegationTo(os);
- *os << ")";
- }
-
- virtual bool MatchAndExplain(T x, MatchResultListener* listener) const {
- // If either matcher1_ or matcher2_ doesn't match x, we only need
- // to explain why one of them fails.
- StringMatchResultListener listener1;
- if (!matcher1_.MatchAndExplain(x, &listener1)) {
- *listener << listener1.str();
- return false;
- }
-
- StringMatchResultListener listener2;
- if (!matcher2_.MatchAndExplain(x, &listener2)) {
- *listener << listener2.str();
- return false;
- }
-
- // Otherwise we need to explain why *both* of them match.
- const internal::string s1 = listener1.str();
- const internal::string s2 = listener2.str();
-
- if (s1 == "") {
- *listener << s2;
- } else {
- *listener << s1;
- if (s2 != "") {
- *listener << ", and " << s2;
- }
- }
- return true;
- }
-
- private:
- const Matcher<T> matcher1_;
- const Matcher<T> matcher2_;
-
- GTEST_DISALLOW_ASSIGN_(BothOfMatcherImpl);
-};
-
-#if GTEST_LANG_CXX11
-// MatcherList provides mechanisms for storing a variable number of matchers in
-// a list structure (ListType) and creating a combining matcher from such a
-// list.
-// The template is defined recursively using the following template paramters:
-// * kSize is the length of the MatcherList.
-// * Head is the type of the first matcher of the list.
-// * Tail denotes the types of the remaining matchers of the list.
-template <int kSize, typename Head, typename... Tail>
-struct MatcherList {
- typedef MatcherList<kSize - 1, Tail...> MatcherListTail;
- typedef ::std::pair<Head, typename MatcherListTail::ListType> ListType;
-
- // BuildList stores variadic type values in a nested pair structure.
- // Example:
- // MatcherList<3, int, string, float>::BuildList(5, "foo", 2.0) will return
- // the corresponding result of type pair<int, pair<string, float>>.
- static ListType BuildList(const Head& matcher, const Tail&... tail) {
- return ListType(matcher, MatcherListTail::BuildList(tail...));
- }
-
- // CreateMatcher<T> creates a Matcher<T> from a given list of matchers (built
- // by BuildList()). CombiningMatcher<T> is used to combine the matchers of the
- // list. CombiningMatcher<T> must implement MatcherInterface<T> and have a
- // constructor taking two Matcher<T>s as input.
- template <typename T, template <typename /* T */> class CombiningMatcher>
- static Matcher<T> CreateMatcher(const ListType& matchers) {
- return Matcher<T>(new CombiningMatcher<T>(
- SafeMatcherCast<T>(matchers.first),
- MatcherListTail::template CreateMatcher<T, CombiningMatcher>(
- matchers.second)));
- }
-};
-
-// The following defines the base case for the recursive definition of
-// MatcherList.
-template <typename Matcher1, typename Matcher2>
-struct MatcherList<2, Matcher1, Matcher2> {
- typedef ::std::pair<Matcher1, Matcher2> ListType;
-
- static ListType BuildList(const Matcher1& matcher1,
- const Matcher2& matcher2) {
- return ::std::pair<Matcher1, Matcher2>(matcher1, matcher2);
- }
-
- template <typename T, template <typename /* T */> class CombiningMatcher>
- static Matcher<T> CreateMatcher(const ListType& matchers) {
- return Matcher<T>(new CombiningMatcher<T>(
- SafeMatcherCast<T>(matchers.first),
- SafeMatcherCast<T>(matchers.second)));
- }
-};
-
-// VariadicMatcher is used for the variadic implementation of
-// AllOf(m_1, m_2, ...) and AnyOf(m_1, m_2, ...).
-// CombiningMatcher<T> is used to recursively combine the provided matchers
-// (of type Args...).
-template <template <typename T> class CombiningMatcher, typename... Args>
-class VariadicMatcher {
- public:
- VariadicMatcher(const Args&... matchers) // NOLINT
- : matchers_(MatcherListType::BuildList(matchers...)) {}
-
- // This template type conversion operator allows an
- // VariadicMatcher<Matcher1, Matcher2...> object to match any type that
- // all of the provided matchers (Matcher1, Matcher2, ...) can match.
- template <typename T>
- operator Matcher<T>() const {
- return MatcherListType::template CreateMatcher<T, CombiningMatcher>(
- matchers_);
- }
-
- private:
- typedef MatcherList<sizeof...(Args), Args...> MatcherListType;
-
- const typename MatcherListType::ListType matchers_;
-
- GTEST_DISALLOW_ASSIGN_(VariadicMatcher);
-};
-
-template <typename... Args>
-using AllOfMatcher = VariadicMatcher<BothOfMatcherImpl, Args...>;
-
-#endif // GTEST_LANG_CXX11
-
-// Used for implementing the AllOf(m_1, ..., m_n) matcher, which
-// matches a value that matches all of the matchers m_1, ..., and m_n.
-template <typename Matcher1, typename Matcher2>
-class BothOfMatcher {
- public:
- BothOfMatcher(Matcher1 matcher1, Matcher2 matcher2)
- : matcher1_(matcher1), matcher2_(matcher2) {}
-
- // This template type conversion operator allows a
- // BothOfMatcher<Matcher1, Matcher2> object to match any type that
- // both Matcher1 and Matcher2 can match.
- template <typename T>
- operator Matcher<T>() const {
- return Matcher<T>(new BothOfMatcherImpl<T>(SafeMatcherCast<T>(matcher1_),
- SafeMatcherCast<T>(matcher2_)));
- }
-
- private:
- Matcher1 matcher1_;
- Matcher2 matcher2_;
-
- GTEST_DISALLOW_ASSIGN_(BothOfMatcher);
-};
-
-// Implements the AnyOf(m1, m2) matcher for a particular argument type
-// T. We do not nest it inside the AnyOfMatcher class template, as
-// that will prevent different instantiations of AnyOfMatcher from
-// sharing the same EitherOfMatcherImpl<T> class.
-template <typename T>
-class EitherOfMatcherImpl : public MatcherInterface<T> {
- public:
- EitherOfMatcherImpl(const Matcher<T>& matcher1, const Matcher<T>& matcher2)
- : matcher1_(matcher1), matcher2_(matcher2) {}
-
- virtual void DescribeTo(::std::ostream* os) const {
- *os << "(";
- matcher1_.DescribeTo(os);
- *os << ") or (";
- matcher2_.DescribeTo(os);
- *os << ")";
- }
-
- virtual void DescribeNegationTo(::std::ostream* os) const {
- *os << "(";
- matcher1_.DescribeNegationTo(os);
- *os << ") and (";
- matcher2_.DescribeNegationTo(os);
- *os << ")";
- }
-
- virtual bool MatchAndExplain(T x, MatchResultListener* listener) const {
- // If either matcher1_ or matcher2_ matches x, we just need to
- // explain why *one* of them matches.
- StringMatchResultListener listener1;
- if (matcher1_.MatchAndExplain(x, &listener1)) {
- *listener << listener1.str();
- return true;
- }
-
- StringMatchResultListener listener2;
- if (matcher2_.MatchAndExplain(x, &listener2)) {
- *listener << listener2.str();
- return true;
- }
-
- // Otherwise we need to explain why *both* of them fail.
- const internal::string s1 = listener1.str();
- const internal::string s2 = listener2.str();
-
- if (s1 == "") {
- *listener << s2;
- } else {
- *listener << s1;
- if (s2 != "") {
- *listener << ", and " << s2;
- }
- }
- return false;
- }
-
- private:
- const Matcher<T> matcher1_;
- const Matcher<T> matcher2_;
-
- GTEST_DISALLOW_ASSIGN_(EitherOfMatcherImpl);
-};
-
-#if GTEST_LANG_CXX11
-// AnyOfMatcher is used for the variadic implementation of AnyOf(m_1, m_2, ...).
-template <typename... Args>
-using AnyOfMatcher = VariadicMatcher<EitherOfMatcherImpl, Args...>;
-
-#endif // GTEST_LANG_CXX11
-
-// Used for implementing the AnyOf(m_1, ..., m_n) matcher, which
-// matches a value that matches at least one of the matchers m_1, ...,
-// and m_n.
-template <typename Matcher1, typename Matcher2>
-class EitherOfMatcher {
- public:
- EitherOfMatcher(Matcher1 matcher1, Matcher2 matcher2)
- : matcher1_(matcher1), matcher2_(matcher2) {}
-
- // This template type conversion operator allows a
- // EitherOfMatcher<Matcher1, Matcher2> object to match any type that
- // both Matcher1 and Matcher2 can match.
- template <typename T>
- operator Matcher<T>() const {
- return Matcher<T>(new EitherOfMatcherImpl<T>(
- SafeMatcherCast<T>(matcher1_), SafeMatcherCast<T>(matcher2_)));
- }
-
- private:
- Matcher1 matcher1_;
- Matcher2 matcher2_;
-
- GTEST_DISALLOW_ASSIGN_(EitherOfMatcher);
-};
-
-// Used for implementing Truly(pred), which turns a predicate into a
-// matcher.
-template <typename Predicate>
-class TrulyMatcher {
- public:
- explicit TrulyMatcher(Predicate pred) : predicate_(pred) {}
-
- // This method template allows Truly(pred) to be used as a matcher
- // for type T where T is the argument type of predicate 'pred'. The
- // argument is passed by reference as the predicate may be
- // interested in the address of the argument.
- template <typename T>
- bool MatchAndExplain(T& x, // NOLINT
- MatchResultListener* /* listener */) const {
- // Without the if-statement, MSVC sometimes warns about converting
- // a value to bool (warning 4800).
- //
- // We cannot write 'return !!predicate_(x);' as that doesn't work
- // when predicate_(x) returns a class convertible to bool but
- // having no operator!().
- if (predicate_(x))
- return true;
- return false;
- }
-
- void DescribeTo(::std::ostream* os) const {
- *os << "satisfies the given predicate";
- }
-
- void DescribeNegationTo(::std::ostream* os) const {
- *os << "doesn't satisfy the given predicate";
- }
-
- private:
- Predicate predicate_;
-
- GTEST_DISALLOW_ASSIGN_(TrulyMatcher);
-};
-
-// Used for implementing Matches(matcher), which turns a matcher into
-// a predicate.
-template <typename M>
-class MatcherAsPredicate {
- public:
- explicit MatcherAsPredicate(M matcher) : matcher_(matcher) {}
-
- // This template operator() allows Matches(m) to be used as a
- // predicate on type T where m is a matcher on type T.
- //
- // The argument x is passed by reference instead of by value, as
- // some matcher may be interested in its address (e.g. as in
- // Matches(Ref(n))(x)).
- template <typename T>
- bool operator()(const T& x) const {
- // We let matcher_ commit to a particular type here instead of
- // when the MatcherAsPredicate object was constructed. This
- // allows us to write Matches(m) where m is a polymorphic matcher
- // (e.g. Eq(5)).
- //
- // If we write Matcher<T>(matcher_).Matches(x) here, it won't
- // compile when matcher_ has type Matcher<const T&>; if we write
- // Matcher<const T&>(matcher_).Matches(x) here, it won't compile
- // when matcher_ has type Matcher<T>; if we just write
- // matcher_.Matches(x), it won't compile when matcher_ is
- // polymorphic, e.g. Eq(5).
- //
- // MatcherCast<const T&>() is necessary for making the code work
- // in all of the above situations.
- return MatcherCast<const T&>(matcher_).Matches(x);
- }
-
- private:
- M matcher_;
-
- GTEST_DISALLOW_ASSIGN_(MatcherAsPredicate);
-};
-
-// For implementing ASSERT_THAT() and EXPECT_THAT(). The template
-// argument M must be a type that can be converted to a matcher.
-template <typename M>
-class PredicateFormatterFromMatcher {
- public:
- explicit PredicateFormatterFromMatcher(M m) : matcher_(internal::move(m)) {}
-
- // This template () operator allows a PredicateFormatterFromMatcher
- // object to act as a predicate-formatter suitable for using with
- // Google Test's EXPECT_PRED_FORMAT1() macro.
- template <typename T>
- AssertionResult operator()(const char* value_text, const T& x) const {
- // We convert matcher_ to a Matcher<const T&> *now* instead of
- // when the PredicateFormatterFromMatcher object was constructed,
- // as matcher_ may be polymorphic (e.g. NotNull()) and we won't
- // know which type to instantiate it to until we actually see the
- // type of x here.
- //
- // We write SafeMatcherCast<const T&>(matcher_) instead of
- // Matcher<const T&>(matcher_), as the latter won't compile when
- // matcher_ has type Matcher<T> (e.g. An<int>()).
- // We don't write MatcherCast<const T&> either, as that allows
- // potentially unsafe downcasting of the matcher argument.
- const Matcher<const T&> matcher = SafeMatcherCast<const T&>(matcher_);
- StringMatchResultListener listener;
- if (MatchPrintAndExplain(x, matcher, &listener))
- return AssertionSuccess();
-
- ::std::stringstream ss;
- ss << "Value of: " << value_text << "\n"
- << "Expected: ";
- matcher.DescribeTo(&ss);
- ss << "\n Actual: " << listener.str();
- return AssertionFailure() << ss.str();
- }
-
- private:
- const M matcher_;
-
- GTEST_DISALLOW_ASSIGN_(PredicateFormatterFromMatcher);
-};
-
-// A helper function for converting a matcher to a predicate-formatter
-// without the user needing to explicitly write the type. This is
-// used for implementing ASSERT_THAT() and EXPECT_THAT().
-// Implementation detail: 'matcher' is received by-value to force decaying.
-template <typename M>
-inline PredicateFormatterFromMatcher<M>
-MakePredicateFormatterFromMatcher(M matcher) {
- return PredicateFormatterFromMatcher<M>(internal::move(matcher));
-}
-
-// Implements the polymorphic floating point equality matcher, which matches
-// two float values using ULP-based approximation or, optionally, a
-// user-specified epsilon. The template is meant to be instantiated with
-// FloatType being either float or double.
-template <typename FloatType>
-class FloatingEqMatcher {
- public:
- // Constructor for FloatingEqMatcher.
- // The matcher's input will be compared with expected. The matcher treats two
- // NANs as equal if nan_eq_nan is true. Otherwise, under IEEE standards,
- // equality comparisons between NANs will always return false. We specify a
- // negative max_abs_error_ term to indicate that ULP-based approximation will
- // be used for comparison.
- FloatingEqMatcher(FloatType expected, bool nan_eq_nan) :
- expected_(expected), nan_eq_nan_(nan_eq_nan), max_abs_error_(-1) {
- }
-
- // Constructor that supports a user-specified max_abs_error that will be used
- // for comparison instead of ULP-based approximation. The max absolute
- // should be non-negative.
- FloatingEqMatcher(FloatType expected, bool nan_eq_nan,
- FloatType max_abs_error)
- : expected_(expected),
- nan_eq_nan_(nan_eq_nan),
- max_abs_error_(max_abs_error) {
- GTEST_CHECK_(max_abs_error >= 0)
- << ", where max_abs_error is" << max_abs_error;
- }
-
- // Implements floating point equality matcher as a Matcher<T>.
- template <typename T>
- class Impl : public MatcherInterface<T> {
- public:
- Impl(FloatType expected, bool nan_eq_nan, FloatType max_abs_error)
- : expected_(expected),
- nan_eq_nan_(nan_eq_nan),
- max_abs_error_(max_abs_error) {}
-
- virtual bool MatchAndExplain(T value,
- MatchResultListener* listener) const {
- const FloatingPoint<FloatType> actual(value), expected(expected_);
-
- // Compares NaNs first, if nan_eq_nan_ is true.
- if (actual.is_nan() || expected.is_nan()) {
- if (actual.is_nan() && expected.is_nan()) {
- return nan_eq_nan_;
- }
- // One is nan; the other is not nan.
- return false;
- }
- if (HasMaxAbsError()) {
- // We perform an equality check so that inf will match inf, regardless
- // of error bounds. If the result of value - expected_ would result in
- // overflow or if either value is inf, the default result is infinity,
- // which should only match if max_abs_error_ is also infinity.
- if (value == expected_) {
- return true;
- }
-
- const FloatType diff = value - expected_;
- if (fabs(diff) <= max_abs_error_) {
- return true;
- }
-
- if (listener->IsInterested()) {
- *listener << "which is " << diff << " from " << expected_;
- }
- return false;
- } else {
- return actual.AlmostEquals(expected);
- }
- }
-
- virtual void DescribeTo(::std::ostream* os) const {
- // os->precision() returns the previously set precision, which we
- // store to restore the ostream to its original configuration
- // after outputting.
- const ::std::streamsize old_precision = os->precision(
- ::std::numeric_limits<FloatType>::digits10 + 2);
- if (FloatingPoint<FloatType>(expected_).is_nan()) {
- if (nan_eq_nan_) {
- *os << "is NaN";
- } else {
- *os << "never matches";
- }
- } else {
- *os << "is approximately " << expected_;
- if (HasMaxAbsError()) {
- *os << " (absolute error <= " << max_abs_error_ << ")";
- }
- }
- os->precision(old_precision);
- }
-
- virtual void DescribeNegationTo(::std::ostream* os) const {
- // As before, get original precision.
- const ::std::streamsize old_precision = os->precision(
- ::std::numeric_limits<FloatType>::digits10 + 2);
- if (FloatingPoint<FloatType>(expected_).is_nan()) {
- if (nan_eq_nan_) {
- *os << "isn't NaN";
- } else {
- *os << "is anything";
- }
- } else {
- *os << "isn't approximately " << expected_;
- if (HasMaxAbsError()) {
- *os << " (absolute error > " << max_abs_error_ << ")";
- }
- }
- // Restore original precision.
- os->precision(old_precision);
- }
-
- private:
- bool HasMaxAbsError() const {
- return max_abs_error_ >= 0;
- }
-
- const FloatType expected_;
- const bool nan_eq_nan_;
- // max_abs_error will be used for value comparison when >= 0.
- const FloatType max_abs_error_;
-
- GTEST_DISALLOW_ASSIGN_(Impl);
- };
-
- // The following 3 type conversion operators allow FloatEq(expected) and
- // NanSensitiveFloatEq(expected) to be used as a Matcher<float>, a
- // Matcher<const float&>, or a Matcher<float&>, but nothing else.
- // (While Google's C++ coding style doesn't allow arguments passed
- // by non-const reference, we may see them in code not conforming to
- // the style. Therefore Google Mock needs to support them.)
- operator Matcher<FloatType>() const {
- return MakeMatcher(
- new Impl<FloatType>(expected_, nan_eq_nan_, max_abs_error_));
- }
-
- operator Matcher<const FloatType&>() const {
- return MakeMatcher(
- new Impl<const FloatType&>(expected_, nan_eq_nan_, max_abs_error_));
- }
-
- operator Matcher<FloatType&>() const {
- return MakeMatcher(
- new Impl<FloatType&>(expected_, nan_eq_nan_, max_abs_error_));
- }
-
- private:
- const FloatType expected_;
- const bool nan_eq_nan_;
- // max_abs_error will be used for value comparison when >= 0.
- const FloatType max_abs_error_;
-
- GTEST_DISALLOW_ASSIGN_(FloatingEqMatcher);
-};
-
-// Implements the Pointee(m) matcher for matching a pointer whose
-// pointee matches matcher m. The pointer can be either raw or smart.
-template <typename InnerMatcher>
-class PointeeMatcher {
- public:
- explicit PointeeMatcher(const InnerMatcher& matcher) : matcher_(matcher) {}
-
- // This type conversion operator template allows Pointee(m) to be
- // used as a matcher for any pointer type whose pointee type is
- // compatible with the inner matcher, where type Pointer can be
- // either a raw pointer or a smart pointer.
- //
- // The reason we do this instead of relying on
- // MakePolymorphicMatcher() is that the latter is not flexible
- // enough for implementing the DescribeTo() method of Pointee().
- template <typename Pointer>
- operator Matcher<Pointer>() const {
- return MakeMatcher(new Impl<Pointer>(matcher_));
- }
-
- private:
- // The monomorphic implementation that works for a particular pointer type.
- template <typename Pointer>
- class Impl : public MatcherInterface<Pointer> {
- public:
- typedef typename PointeeOf<GTEST_REMOVE_CONST_( // NOLINT
- GTEST_REMOVE_REFERENCE_(Pointer))>::type Pointee;
-
- explicit Impl(const InnerMatcher& matcher)
- : matcher_(MatcherCast<const Pointee&>(matcher)) {}
-
- virtual void DescribeTo(::std::ostream* os) const {
- *os << "points to a value that ";
- matcher_.DescribeTo(os);
- }
-
- virtual void DescribeNegationTo(::std::ostream* os) const {
- *os << "does not point to a value that ";
- matcher_.DescribeTo(os);
- }
-
- virtual bool MatchAndExplain(Pointer pointer,
- MatchResultListener* listener) const {
- if (GetRawPointer(pointer) == NULL)
- return false;
-
- *listener << "which points to ";
- return MatchPrintAndExplain(*pointer, matcher_, listener);
- }
-
- private:
- const Matcher<const Pointee&> matcher_;
-
- GTEST_DISALLOW_ASSIGN_(Impl);
- };
-
- const InnerMatcher matcher_;
-
- GTEST_DISALLOW_ASSIGN_(PointeeMatcher);
-};
-
-// Implements the WhenDynamicCastTo<T>(m) matcher that matches a pointer or
-// reference that matches inner_matcher when dynamic_cast<T> is applied.
-// The result of dynamic_cast<To> is forwarded to the inner matcher.
-// If To is a pointer and the cast fails, the inner matcher will receive NULL.
-// If To is a reference and the cast fails, this matcher returns false
-// immediately.
-template <typename To>
-class WhenDynamicCastToMatcherBase {
- public:
- explicit WhenDynamicCastToMatcherBase(const Matcher<To>& matcher)
- : matcher_(matcher) {}
-
- void DescribeTo(::std::ostream* os) const {
- GetCastTypeDescription(os);
- matcher_.DescribeTo(os);
- }
-
- void DescribeNegationTo(::std::ostream* os) const {
- GetCastTypeDescription(os);
- matcher_.DescribeNegationTo(os);
- }
-
- protected:
- const Matcher<To> matcher_;
-
- static string GetToName() {
-#if GTEST_HAS_RTTI
- return GetTypeName<To>();
-#else // GTEST_HAS_RTTI
- return "the target type";
-#endif // GTEST_HAS_RTTI
- }
-
- private:
- static void GetCastTypeDescription(::std::ostream* os) {
- *os << "when dynamic_cast to " << GetToName() << ", ";
- }
-
- GTEST_DISALLOW_ASSIGN_(WhenDynamicCastToMatcherBase);
-};
-
-// Primary template.
-// To is a pointer. Cast and forward the result.
-template <typename To>
-class WhenDynamicCastToMatcher : public WhenDynamicCastToMatcherBase<To> {
- public:
- explicit WhenDynamicCastToMatcher(const Matcher<To>& matcher)
- : WhenDynamicCastToMatcherBase<To>(matcher) {}
-
- template <typename From>
- bool MatchAndExplain(From from, MatchResultListener* listener) const {
- // TODO(sbenza): Add more detail on failures. ie did the dyn_cast fail?
- To to = dynamic_cast<To>(from);
- return MatchPrintAndExplain(to, this->matcher_, listener);
- }
-};
-
-// Specialize for references.
-// In this case we return false if the dynamic_cast fails.
-template <typename To>
-class WhenDynamicCastToMatcher<To&> : public WhenDynamicCastToMatcherBase<To&> {
- public:
- explicit WhenDynamicCastToMatcher(const Matcher<To&>& matcher)
- : WhenDynamicCastToMatcherBase<To&>(matcher) {}
-
- template <typename From>
- bool MatchAndExplain(From& from, MatchResultListener* listener) const {
- // We don't want an std::bad_cast here, so do the cast with pointers.
- To* to = dynamic_cast<To*>(&from);
- if (to == NULL) {
- *listener << "which cannot be dynamic_cast to " << this->GetToName();
- return false;
- }
- return MatchPrintAndExplain(*to, this->matcher_, listener);
- }
-};
-
-// Implements the Field() matcher for matching a field (i.e. member
-// variable) of an object.
-template <typename Class, typename FieldType>
-class FieldMatcher {
- public:
- FieldMatcher(FieldType Class::*field,
- const Matcher<const FieldType&>& matcher)
- : field_(field), matcher_(matcher) {}
-
- void DescribeTo(::std::ostream* os) const {
- *os << "is an object whose given field ";
- matcher_.DescribeTo(os);
- }
-
- void DescribeNegationTo(::std::ostream* os) const {
- *os << "is an object whose given field ";
- matcher_.DescribeNegationTo(os);
- }
-
- template <typename T>
- bool MatchAndExplain(const T& value, MatchResultListener* listener) const {
- return MatchAndExplainImpl(
- typename ::testing::internal::
- is_pointer<GTEST_REMOVE_CONST_(T)>::type(),
- value, listener);
- }
-
- private:
- // The first argument of MatchAndExplainImpl() is needed to help
- // Symbian's C++ compiler choose which overload to use. Its type is
- // true_type iff the Field() matcher is used to match a pointer.
- bool MatchAndExplainImpl(false_type /* is_not_pointer */, const Class& obj,
- MatchResultListener* listener) const {
- *listener << "whose given field is ";
- return MatchPrintAndExplain(obj.*field_, matcher_, listener);
- }
-
- bool MatchAndExplainImpl(true_type /* is_pointer */, const Class* p,
- MatchResultListener* listener) const {
- if (p == NULL)
- return false;
-
- *listener << "which points to an object ";
- // Since *p has a field, it must be a class/struct/union type and
- // thus cannot be a pointer. Therefore we pass false_type() as
- // the first argument.
- return MatchAndExplainImpl(false_type(), *p, listener);
- }
-
- const FieldType Class::*field_;
- const Matcher<const FieldType&> matcher_;
-
- GTEST_DISALLOW_ASSIGN_(FieldMatcher);
-};
-
-// Implements the Property() matcher for matching a property
-// (i.e. return value of a getter method) of an object.
-template <typename Class, typename PropertyType>
-class PropertyMatcher {
- public:
- // The property may have a reference type, so 'const PropertyType&'
- // may cause double references and fail to compile. That's why we
- // need GTEST_REFERENCE_TO_CONST, which works regardless of
- // PropertyType being a reference or not.
- typedef GTEST_REFERENCE_TO_CONST_(PropertyType) RefToConstProperty;
-
- PropertyMatcher(PropertyType (Class::*property)() const,
- const Matcher<RefToConstProperty>& matcher)
- : property_(property), matcher_(matcher) {}
-
- void DescribeTo(::std::ostream* os) const {
- *os << "is an object whose given property ";
- matcher_.DescribeTo(os);
- }
-
- void DescribeNegationTo(::std::ostream* os) const {
- *os << "is an object whose given property ";
- matcher_.DescribeNegationTo(os);
- }
-
- template <typename T>
- bool MatchAndExplain(const T&value, MatchResultListener* listener) const {
- return MatchAndExplainImpl(
- typename ::testing::internal::
- is_pointer<GTEST_REMOVE_CONST_(T)>::type(),
- value, listener);
- }
-
- private:
- // The first argument of MatchAndExplainImpl() is needed to help
- // Symbian's C++ compiler choose which overload to use. Its type is
- // true_type iff the Property() matcher is used to match a pointer.
- bool MatchAndExplainImpl(false_type /* is_not_pointer */, const Class& obj,
- MatchResultListener* listener) const {
- *listener << "whose given property is ";
- // Cannot pass the return value (for example, int) to MatchPrintAndExplain,
- // which takes a non-const reference as argument.
-#if defined(_PREFAST_ ) && _MSC_VER == 1800
- // Workaround bug in VC++ 2013's /analyze parser.
- // https://connect.microsoft.com/VisualStudio/feedback/details/1106363/internal-compiler-error-with-analyze-due-to-failure-to-infer-move
- posix::Abort(); // To make sure it is never run.
- return false;
-#else
- RefToConstProperty result = (obj.*property_)();
- return MatchPrintAndExplain(result, matcher_, listener);
-#endif
- }
-
- bool MatchAndExplainImpl(true_type /* is_pointer */, const Class* p,
- MatchResultListener* listener) const {
- if (p == NULL)
- return false;
-
- *listener << "which points to an object ";
- // Since *p has a property method, it must be a class/struct/union
- // type and thus cannot be a pointer. Therefore we pass
- // false_type() as the first argument.
- return MatchAndExplainImpl(false_type(), *p, listener);
- }
-
- PropertyType (Class::*property_)() const;
- const Matcher<RefToConstProperty> matcher_;
-
- GTEST_DISALLOW_ASSIGN_(PropertyMatcher);
-};
-
-// Type traits specifying various features of different functors for ResultOf.
-// The default template specifies features for functor objects.
-// Functor classes have to typedef argument_type and result_type
-// to be compatible with ResultOf.
-template <typename Functor>
-struct CallableTraits {
- typedef typename Functor::result_type ResultType;
- typedef Functor StorageType;
-
- static void CheckIsValid(Functor /* functor */) {}
- template <typename T>
- static ResultType Invoke(Functor f, T arg) { return f(arg); }
-};
-
-// Specialization for function pointers.
-template <typename ArgType, typename ResType>
-struct CallableTraits<ResType(*)(ArgType)> {
- typedef ResType ResultType;
- typedef ResType(*StorageType)(ArgType);
-
- static void CheckIsValid(ResType(*f)(ArgType)) {
- GTEST_CHECK_(f != NULL)
- << "NULL function pointer is passed into ResultOf().";
- }
- template <typename T>
- static ResType Invoke(ResType(*f)(ArgType), T arg) {
- return (*f)(arg);
- }
-};
-
-// Implements the ResultOf() matcher for matching a return value of a
-// unary function of an object.
-template <typename Callable>
-class ResultOfMatcher {
- public:
- typedef typename CallableTraits<Callable>::ResultType ResultType;
-
- ResultOfMatcher(Callable callable, const Matcher<ResultType>& matcher)
- : callable_(callable), matcher_(matcher) {
- CallableTraits<Callable>::CheckIsValid(callable_);
- }
-
- template <typename T>
- operator Matcher<T>() const {
- return Matcher<T>(new Impl<T>(callable_, matcher_));
- }
-
- private:
- typedef typename CallableTraits<Callable>::StorageType CallableStorageType;
-
- template <typename T>
- class Impl : public MatcherInterface<T> {
- public:
- Impl(CallableStorageType callable, const Matcher<ResultType>& matcher)
- : callable_(callable), matcher_(matcher) {}
-
- virtual void DescribeTo(::std::ostream* os) const {
- *os << "is mapped by the given callable to a value that ";
- matcher_.DescribeTo(os);
- }
-
- virtual void DescribeNegationTo(::std::ostream* os) const {
- *os << "is mapped by the given callable to a value that ";
- matcher_.DescribeNegationTo(os);
- }
-
- virtual bool MatchAndExplain(T obj, MatchResultListener* listener) const {
- *listener << "which is mapped by the given callable to ";
- // Cannot pass the return value (for example, int) to
- // MatchPrintAndExplain, which takes a non-const reference as argument.
- ResultType result =
- CallableTraits<Callable>::template Invoke<T>(callable_, obj);
- return MatchPrintAndExplain(result, matcher_, listener);
- }
-
- private:
- // Functors often define operator() as non-const method even though
- // they are actualy stateless. But we need to use them even when
- // 'this' is a const pointer. It's the user's responsibility not to
- // use stateful callables with ResultOf(), which does't guarantee
- // how many times the callable will be invoked.
- mutable CallableStorageType callable_;
- const Matcher<ResultType> matcher_;
-
- GTEST_DISALLOW_ASSIGN_(Impl);
- }; // class Impl
-
- const CallableStorageType callable_;
- const Matcher<ResultType> matcher_;
-
- GTEST_DISALLOW_ASSIGN_(ResultOfMatcher);
-};
-
-// Implements a matcher that checks the size of an STL-style container.
-template <typename SizeMatcher>
-class SizeIsMatcher {
- public:
- explicit SizeIsMatcher(const SizeMatcher& size_matcher)
- : size_matcher_(size_matcher) {
- }
-
- template <typename Container>
- operator Matcher<Container>() const {
- return MakeMatcher(new Impl<Container>(size_matcher_));
- }
-
- template <typename Container>
- class Impl : public MatcherInterface<Container> {
- public:
- typedef internal::StlContainerView<
- GTEST_REMOVE_REFERENCE_AND_CONST_(Container)> ContainerView;
- typedef typename ContainerView::type::size_type SizeType;
- explicit Impl(const SizeMatcher& size_matcher)
- : size_matcher_(MatcherCast<SizeType>(size_matcher)) {}
-
- virtual void DescribeTo(::std::ostream* os) const {
- *os << "size ";
- size_matcher_.DescribeTo(os);
- }
- virtual void DescribeNegationTo(::std::ostream* os) const {
- *os << "size ";
- size_matcher_.DescribeNegationTo(os);
- }
-
- virtual bool MatchAndExplain(Container container,
- MatchResultListener* listener) const {
- SizeType size = container.size();
- StringMatchResultListener size_listener;
- const bool result = size_matcher_.MatchAndExplain(size, &size_listener);
- *listener
- << "whose size " << size << (result ? " matches" : " doesn't match");
- PrintIfNotEmpty(size_listener.str(), listener->stream());
- return result;
- }
-
- private:
- const Matcher<SizeType> size_matcher_;
- GTEST_DISALLOW_ASSIGN_(Impl);
- };
-
- private:
- const SizeMatcher size_matcher_;
- GTEST_DISALLOW_ASSIGN_(SizeIsMatcher);
-};
-
-// Implements a matcher that checks the begin()..end() distance of an STL-style
-// container.
-template <typename DistanceMatcher>
-class BeginEndDistanceIsMatcher {
- public:
- explicit BeginEndDistanceIsMatcher(const DistanceMatcher& distance_matcher)
- : distance_matcher_(distance_matcher) {}
-
- template <typename Container>
- operator Matcher<Container>() const {
- return MakeMatcher(new Impl<Container>(distance_matcher_));
- }
-
- template <typename Container>
- class Impl : public MatcherInterface<Container> {
- public:
- typedef internal::StlContainerView<
- GTEST_REMOVE_REFERENCE_AND_CONST_(Container)> ContainerView;
- typedef typename std::iterator_traits<
- typename ContainerView::type::const_iterator>::difference_type
- DistanceType;
- explicit Impl(const DistanceMatcher& distance_matcher)
- : distance_matcher_(MatcherCast<DistanceType>(distance_matcher)) {}
-
- virtual
<TRUNCATED>