Mojo: RemotePtr<S> + bindings changes for Peer attribute.

mojo/public/tests/bindings_remote_ptr_unittest.cc

+// 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/tests/mojom/math_calculator.h"
+#include "mojo/public/tests/simple_bindings_support.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace mojo {
+namespace test {
+
+class MathCalculatorImpl : public math::CalculatorStub {
+ public:
+  explicit MathCalculatorImpl(Handle pipe)
+      : ui_(pipe),
+        total_(0.0) {
+    ui_.SetPeer(this);
+  }
+
+  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::CalculatorUIStub {
+ public:
+  explicit MathCalculatorUIImpl(Handle pipe)
+      : calculator_(pipe),
+        output_(0.0) {
+    calculator_.SetPeer(this);
+  }
+
+  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 BindingsRemotePtrTest : public testing::Test {
+ public:
+  BindingsRemotePtrTest() {
+    CreateMessagePipe(&pipe0_, &pipe1_);
+  }
+
+  virtual ~BindingsRemotePtrTest() {
+    Close(pipe0_);
+    Close(pipe1_);
+  }
+
+  void PumpMessages() {
+    bindings_support_.Process();
+  }
+
+ protected:
+  Handle pipe0_;
+  Handle pipe1_;
+
+ private:
+  SimpleBindingsSupport bindings_support_;
+};
+
+TEST_F(BindingsRemotePtrTest, EndToEnd) {
+  // Suppose this is instantiated in a process that has pipe0_.
+  MathCalculatorImpl calculator(pipe0_);
+
+  // Suppose this is instantiated in a process that has pipe1_.
+  MathCalculatorUIImpl calculator_ui(pipe1_);
+
+  calculator_ui.Add(2.0);
+  calculator_ui.Multiply(5.0);
+
+  PumpMessages();
+
+  EXPECT_EQ(10.0, calculator_ui.GetOutput());
+}
+
+}  // namespace test
+}  // namespace mojo