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// Copyright 2014 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/cpp/bindings/callback.h"
#include "mojo/public/cpp/environment/async_waiter.h"
#include "mojo/public/cpp/test_support/test_utils.h"
#include "mojo/public/cpp/utility/run_loop.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace mojo {
namespace {
class TestAsyncWaitCallback {
public:
TestAsyncWaitCallback() : result_count_(0), last_result_(MOJO_RESULT_OK) {}
~TestAsyncWaitCallback() {}
int result_count() const { return result_count_; }
MojoResult last_result() const { return last_result_; }
void OnHandleReady(MojoResult result) {
result_count_++;
last_result_ = result;
}
private:
int result_count_;
MojoResult last_result_;
MOJO_DISALLOW_COPY_AND_ASSIGN(TestAsyncWaitCallback);
};
// Manual code to create a callback since we don't have mojo::Bind yet.
class ManualCallback {
public:
explicit ManualCallback(TestAsyncWaitCallback* callback)
: callback_(callback) {}
void Run(MojoResult result) const { callback_->OnHandleReady(result); }
private:
TestAsyncWaitCallback* callback_;
};
class AsyncWaiterTest : public testing::Test {
public:
AsyncWaiterTest() {}
private:
Environment environment_;
RunLoop run_loop_;
MOJO_DISALLOW_COPY_AND_ASSIGN(AsyncWaiterTest);
};
// Verifies AsyncWaitCallback is notified when pipe is ready.
TEST_F(AsyncWaiterTest, CallbackNotified) {
TestAsyncWaitCallback callback;
MessagePipe test_pipe;
EXPECT_TRUE(test::WriteTextMessage(test_pipe.handle1.get(), std::string()));
AsyncWaiter waiter(test_pipe.handle0.get(), MOJO_HANDLE_SIGNAL_READABLE,
ManualCallback(&callback));
RunLoop::current()->Run();
EXPECT_EQ(1, callback.result_count());
EXPECT_EQ(MOJO_RESULT_OK, callback.last_result());
}
// Verifies 2 AsyncWaitCallbacks are notified when there pipes are ready.
TEST_F(AsyncWaiterTest, TwoCallbacksNotified) {
TestAsyncWaitCallback callback1;
TestAsyncWaitCallback callback2;
MessagePipe test_pipe1;
MessagePipe test_pipe2;
EXPECT_TRUE(test::WriteTextMessage(test_pipe1.handle1.get(), std::string()));
EXPECT_TRUE(test::WriteTextMessage(test_pipe2.handle1.get(), std::string()));
AsyncWaiter waiter1(test_pipe1.handle0.get(), MOJO_HANDLE_SIGNAL_READABLE,
ManualCallback(&callback1));
AsyncWaiter waiter2(test_pipe2.handle0.get(), MOJO_HANDLE_SIGNAL_READABLE,
ManualCallback(&callback2));
RunLoop::current()->Run();
EXPECT_EQ(1, callback1.result_count());
EXPECT_EQ(MOJO_RESULT_OK, callback1.last_result());
EXPECT_EQ(1, callback2.result_count());
EXPECT_EQ(MOJO_RESULT_OK, callback2.last_result());
}
// Verifies cancel works.
TEST_F(AsyncWaiterTest, CancelCallback) {
TestAsyncWaitCallback callback;
MessagePipe test_pipe;
EXPECT_TRUE(test::WriteTextMessage(test_pipe.handle1.get(), std::string()));
{
AsyncWaiter waiter(test_pipe.handle0.get(), MOJO_HANDLE_SIGNAL_READABLE,
ManualCallback(&callback));
}
RunLoop::current()->Run();
EXPECT_EQ(0, callback.result_count());
}
} // namespace
} // namespace mojo
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