v8/testing/gmock-support.h
bmeurer@chromium.org d32fa64d33 Refactor ChangeLowering class to avoid template specialization.
Also refactor the unit tests and add support to easily
match DAGs using CaptureEq() matcher.

TEST=compiler-unittests
BUG=v8:3489
LOG=n
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/480863002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23140 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-08-18 06:54:07 +00:00

73 lines
1.7 KiB
C++

// 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 "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
// 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>
Matcher<T> CaptureEq(Capture<T>* capture) {
return MakeMatcher(new internal::CaptureEqMatcher<T>(capture));
}
} // namespace testing
#endif // V8_TESTING_GMOCK_SUPPORT_H_