Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 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 | |
| 10 | namespace testing { |
| 11 | |
| 12 | template <typename T> |
| 13 | class 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 | |
| 32 | namespace internal { |
| 33 | |
| 34 | template <typename T> |
| 35 | class 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. |
| 65 | template <typename T> |
| 66 | Matcher<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_ |