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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_TESTING_GMOCK_SUPPORT_H_
#define V8_TESTING_GMOCK_SUPPORT_H_
#include <cmath>
#include <cstring>
#include <string>
#include "testing/gmock/include/gmock/gmock.h"
namespace testing {
template <typename T>
class Capture {
public:
Capture() : value_(), has_value_(false) {}
const T& value() const { return value_; }
bool has_value() const { return has_value_; }
void SetValue(const T& value) {
DCHECK(!has_value());
value_ = value;
has_value_ = true;
}
private:
T value_;
bool has_value_;
};
namespace internal {
template <typename T>
class CaptureEqMatcher : public MatcherInterface<T> {
public:
explicit CaptureEqMatcher(Capture<T>* capture) : capture_(capture) {}
virtual void DescribeTo(std::ostream* os) const {
*os << "captured by " << static_cast<const void*>(capture_);
if (capture_->has_value()) *os << " which has value " << capture_->value();
}
virtual bool MatchAndExplain(T value, MatchResultListener* listener) const {
if (!capture_->has_value()) {
capture_->SetValue(value);
return true;
}
if (value != capture_->value()) {
*listener << "which is not equal to " << capture_->value();
return false;
}
return true;
}
private:
Capture<T>* capture_;
};
} // namespace internal
// Creates a polymorphic matcher that matches anything whose bit representation
// is equal to that of {x}.
MATCHER_P(BitEq, x, std::string(negation ? "isn't" : "is") +
" bitwise equal to " + PrintToString(x)) {
static_assert(sizeof(x) == sizeof(arg), "Size mismatch");
return std::memcmp(&arg, &x, sizeof(x)) == 0;
}
// CaptureEq(capture) captures the value passed in during matching as long as it
// is unset, and once set, compares the value for equality with the argument.
template <typename T>
inline Matcher<T> CaptureEq(Capture<T>* capture) {
return MakeMatcher(new internal::CaptureEqMatcher<T>(capture));
}
// Creates a polymorphic matcher that matches any floating point NaN value.
MATCHER(IsNaN, std::string(negation ? "isn't" : "is") + " not a number") {
return std::isnan(arg);
}
} // namespace testing
#endif // V8_TESTING_GMOCK_SUPPORT_H_
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