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 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 8 | #include <cmath> |
| 9 | #include <cstring> |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 10 | #include <string> |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 11 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 12 | #include "testing/gmock/include/gmock/gmock.h" |
| 13 | |
| 14 | namespace testing { |
| 15 | |
| 16 | template <typename T> |
| 17 | class Capture { |
| 18 | public: |
| 19 | Capture() : value_(), has_value_(false) {} |
| 20 | |
| 21 | const T& value() const { return value_; } |
| 22 | bool has_value() const { return has_value_; } |
| 23 | |
| 24 | void SetValue(const T& value) { |
| 25 | DCHECK(!has_value()); |
| 26 | value_ = value; |
| 27 | has_value_ = true; |
| 28 | } |
| 29 | |
| 30 | private: |
| 31 | T value_; |
| 32 | bool has_value_; |
| 33 | }; |
| 34 | |
| 35 | |
| 36 | namespace internal { |
| 37 | |
| 38 | template <typename T> |
| 39 | class CaptureEqMatcher : public MatcherInterface<T> { |
| 40 | public: |
| 41 | explicit CaptureEqMatcher(Capture<T>* capture) : capture_(capture) {} |
| 42 | |
| 43 | virtual void DescribeTo(std::ostream* os) const { |
| 44 | *os << "captured by " << static_cast<const void*>(capture_); |
| 45 | if (capture_->has_value()) *os << " which has value " << capture_->value(); |
| 46 | } |
| 47 | |
| 48 | virtual bool MatchAndExplain(T value, MatchResultListener* listener) const { |
| 49 | if (!capture_->has_value()) { |
| 50 | capture_->SetValue(value); |
| 51 | return true; |
| 52 | } |
| 53 | if (value != capture_->value()) { |
| 54 | *listener << "which is not equal to " << capture_->value(); |
| 55 | return false; |
| 56 | } |
| 57 | return true; |
| 58 | } |
| 59 | |
| 60 | private: |
| 61 | Capture<T>* capture_; |
| 62 | }; |
| 63 | |
| 64 | } // namespace internal |
| 65 | |
| 66 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 67 | // Creates a polymorphic matcher that matches anything whose bit representation |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 68 | // is equal to that of {x}. |
| 69 | MATCHER_P(BitEq, x, std::string(negation ? "isn't" : "is") + |
| 70 | " bitwise equal to " + PrintToString(x)) { |
| 71 | static_assert(sizeof(x) == sizeof(arg), "Size mismatch"); |
| 72 | return std::memcmp(&arg, &x, sizeof(x)) == 0; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 76 | // CaptureEq(capture) captures the value passed in during matching as long as it |
| 77 | // is unset, and once set, compares the value for equality with the argument. |
| 78 | template <typename T> |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 79 | inline Matcher<T> CaptureEq(Capture<T>* capture) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 80 | return MakeMatcher(new internal::CaptureEqMatcher<T>(capture)); |
| 81 | } |
| 82 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 83 | |
| 84 | // Creates a polymorphic matcher that matches any floating point NaN value. |
| 85 | MATCHER(IsNaN, std::string(negation ? "isn't" : "is") + " not a number") { |
| 86 | return std::isnan(arg); |
| 87 | } |
| 88 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 89 | } // namespace testing |
| 90 | |
| 91 | #endif // V8_TESTING_GMOCK_SUPPORT_H_ |