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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "mojo/public/bindings/lib/remote_ptr.h"
#include "mojo/public/environment/environment.h"
#include "mojo/public/utility/run_loop.h"
#include "mojom/math_calculator.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace mojo {
namespace test {
class MathCalculatorImpl : public math::Calculator {
public:
virtual ~MathCalculatorImpl() {}
explicit MathCalculatorImpl(ScopedMessagePipeHandle pipe)
: ui_(pipe.Pass(), this),
total_(0.0) {
}
virtual void Clear() MOJO_OVERRIDE {
ui_->Output(total_);
}
virtual void Add(double value) MOJO_OVERRIDE {
total_ += value;
ui_->Output(total_);
}
virtual void Multiply(double value) MOJO_OVERRIDE {
total_ *= value;
ui_->Output(total_);
}
private:
RemotePtr<math::CalculatorUI> ui_;
double total_;
};
class MathCalculatorUIImpl : public math::CalculatorUI {
public:
explicit MathCalculatorUIImpl(ScopedMessagePipeHandle pipe)
: calculator_(pipe.Pass(), this),
output_(0.0) {
}
bool encountered_error() const {
return calculator_.encountered_error();
}
void Add(double value) {
calculator_->Add(value);
}
void Subtract(double value) {
calculator_->Add(-value);
}
void Multiply(double value) {
calculator_->Multiply(value);
}
void Divide(double value) {
calculator_->Multiply(1.0 / value);
}
double GetOutput() const {
return output_;
}
private:
// math::CalculatorUI implementation:
virtual void Output(double value) MOJO_OVERRIDE {
output_ = value;
}
RemotePtr<math::Calculator> calculator_;
double output_;
};
class RemotePtrTest : public testing::Test {
public:
RemotePtrTest() {
CreateMessagePipe(&pipe0_, &pipe1_);
}
virtual ~RemotePtrTest() {
}
void PumpMessages() {
loop_.RunUntilIdle();
}
protected:
ScopedMessagePipeHandle pipe0_;
ScopedMessagePipeHandle pipe1_;
private:
Environment env_;
RunLoop loop_;
};
TEST_F(RemotePtrTest, EndToEnd) {
// Suppose this is instantiated in a process that has pipe0_.
MathCalculatorImpl calculator(pipe0_.Pass());
// Suppose this is instantiated in a process that has pipe1_.
MathCalculatorUIImpl calculator_ui(pipe1_.Pass());
calculator_ui.Add(2.0);
calculator_ui.Multiply(5.0);
PumpMessages();
EXPECT_EQ(10.0, calculator_ui.GetOutput());
}
TEST_F(RemotePtrTest, Movable) {
RemotePtr<math::Calculator> a;
RemotePtr<math::Calculator> b(pipe0_.Pass(), NULL);
EXPECT_TRUE(a.is_null());
EXPECT_FALSE(b.is_null());
a = b.Pass();
EXPECT_FALSE(a.is_null());
EXPECT_TRUE(b.is_null());
}
TEST_F(RemotePtrTest, Resettable) {
RemotePtr<math::Calculator> a;
EXPECT_TRUE(a.is_null());
MessagePipeHandle handle = pipe0_.get();
a.reset(pipe0_.Pass(), NULL);
EXPECT_FALSE(a.is_null());
a.reset();
EXPECT_TRUE(a.is_null());
// Test that handle was closed.
EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT, CloseRaw(handle));
}
TEST_F(RemotePtrTest, EncounteredError) {
MathCalculatorImpl* calculator = new MathCalculatorImpl(pipe0_.Pass());
MathCalculatorUIImpl calculator_ui(pipe1_.Pass());
calculator_ui.Add(2.0);
PumpMessages();
EXPECT_EQ(2.0, calculator_ui.GetOutput());
EXPECT_FALSE(calculator_ui.encountered_error());
calculator_ui.Multiply(5.0);
EXPECT_FALSE(calculator_ui.encountered_error());
// Close the other side of the pipe.
delete calculator;
// The state change isn't picked up locally yet.
EXPECT_FALSE(calculator_ui.encountered_error());
PumpMessages();
// OK, now we see the error.
EXPECT_TRUE(calculator_ui.encountered_error());
}
} // namespace test
} // namespace mojo
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