1// Copyright 2014 the V8 project authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef V8_TESTING_GMOCK_SUPPORT_H_ 6#define V8_TESTING_GMOCK_SUPPORT_H_ 7 8#include "testing/gmock/include/gmock/gmock.h" 9 10namespace testing { 11 12template <typename T> 13class Capture { 14 public: 15 Capture() : value_(), has_value_(false) {} 16 17 const T& value() const { return value_; } 18 bool has_value() const { return has_value_; } 19 20 void SetValue(const T& value) { 21 DCHECK(!has_value()); 22 value_ = value; 23 has_value_ = true; 24 } 25 26 private: 27 T value_; 28 bool has_value_; 29}; 30 31 32namespace internal { 33 34template <typename T> 35class CaptureEqMatcher : public MatcherInterface<T> { 36 public: 37 explicit CaptureEqMatcher(Capture<T>* capture) : capture_(capture) {} 38 39 virtual void DescribeTo(std::ostream* os) const { 40 *os << "captured by " << static_cast<const void*>(capture_); 41 if (capture_->has_value()) *os << " which has value " << capture_->value(); 42 } 43 44 virtual bool MatchAndExplain(T value, MatchResultListener* listener) const { 45 if (!capture_->has_value()) { 46 capture_->SetValue(value); 47 return true; 48 } 49 if (value != capture_->value()) { 50 *listener << "which is not equal to " << capture_->value(); 51 return false; 52 } 53 return true; 54 } 55 56 private: 57 Capture<T>* capture_; 58}; 59 60} // namespace internal 61 62 63// CaptureEq(capture) captures the value passed in during matching as long as it 64// is unset, and once set, compares the value for equality with the argument. 65template <typename T> 66Matcher<T> CaptureEq(Capture<T>* capture) { 67 return MakeMatcher(new internal::CaptureEqMatcher<T>(capture)); 68} 69 70} // namespace testing 71 72#endif // V8_TESTING_GMOCK_SUPPORT_H_ 73