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// Copyright (c) 2012 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 "base/message_pump_libevent.h"
#include <unistd.h>
#include "base/message_loop.h"
#include "base/posix/eintr_wrapper.h"
#include "base/threading/thread.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/libevent/event.h"
namespace base {
class MessagePumpLibeventTest : public testing::Test {
protected:
MessagePumpLibeventTest()
: ui_loop_(MessageLoop::TYPE_UI),
io_thread_("MessagePumpLibeventTestIOThread") {}
virtual ~MessagePumpLibeventTest() {}
virtual void SetUp() OVERRIDE {
Thread::Options options(MessageLoop::TYPE_IO, 0);
ASSERT_TRUE(io_thread_.StartWithOptions(options));
ASSERT_EQ(MessageLoop::TYPE_IO, io_thread_.message_loop()->type());
int ret = pipe(pipefds_);
ASSERT_EQ(0, ret);
}
virtual void TearDown() OVERRIDE {
if (HANDLE_EINTR(close(pipefds_[0])) < 0)
PLOG(ERROR) << "close";
if (HANDLE_EINTR(close(pipefds_[1])) < 0)
PLOG(ERROR) << "close";
}
MessageLoop* ui_loop() { return &ui_loop_; }
MessageLoopForIO* io_loop() const {
return static_cast<MessageLoopForIO*>(io_thread_.message_loop());
}
void OnLibeventNotification(
MessagePumpLibevent* pump,
MessagePumpLibevent::FileDescriptorWatcher* controller) {
pump->OnLibeventNotification(0, EV_WRITE | EV_READ, controller);
}
int pipefds_[2];
private:
MessageLoop ui_loop_;
Thread io_thread_;
};
namespace {
// Concrete implementation of MessagePumpLibevent::Watcher that does
// nothing useful.
class StupidWatcher : public MessagePumpLibevent::Watcher {
public:
virtual ~StupidWatcher() {}
// base:MessagePumpLibevent::Watcher interface
virtual void OnFileCanReadWithoutBlocking(int fd) OVERRIDE {}
virtual void OnFileCanWriteWithoutBlocking(int fd) OVERRIDE {}
};
#if GTEST_HAS_DEATH_TEST && !defined(NDEBUG)
// Test to make sure that we catch calling WatchFileDescriptor off of the
// wrong thread.
TEST_F(MessagePumpLibeventTest, TestWatchingFromBadThread) {
MessagePumpLibevent::FileDescriptorWatcher watcher;
StupidWatcher delegate;
ASSERT_DEATH(io_loop()->WatchFileDescriptor(
STDOUT_FILENO, false, MessageLoopForIO::WATCH_READ, &watcher, &delegate),
"Check failed: "
"watch_file_descriptor_caller_checker_.CalledOnValidThread()");
}
#endif // GTEST_HAS_DEATH_TEST && !defined(NDEBUG)
class BaseWatcher : public MessagePumpLibevent::Watcher {
public:
explicit BaseWatcher(MessagePumpLibevent::FileDescriptorWatcher* controller)
: controller_(controller) {
DCHECK(controller_);
}
virtual ~BaseWatcher() {}
// base:MessagePumpLibevent::Watcher interface
virtual void OnFileCanReadWithoutBlocking(int /* fd */) OVERRIDE {
NOTREACHED();
}
virtual void OnFileCanWriteWithoutBlocking(int /* fd */) OVERRIDE {
NOTREACHED();
}
protected:
MessagePumpLibevent::FileDescriptorWatcher* controller_;
};
class DeleteWatcher : public BaseWatcher {
public:
explicit DeleteWatcher(
MessagePumpLibevent::FileDescriptorWatcher* controller)
: BaseWatcher(controller) {}
virtual ~DeleteWatcher() {
DCHECK(!controller_);
}
virtual void OnFileCanWriteWithoutBlocking(int /* fd */) OVERRIDE {
DCHECK(controller_);
delete controller_;
controller_ = NULL;
}
};
TEST_F(MessagePumpLibeventTest, DeleteWatcher) {
scoped_refptr<MessagePumpLibevent> pump(new MessagePumpLibevent);
MessagePumpLibevent::FileDescriptorWatcher* watcher =
new MessagePumpLibevent::FileDescriptorWatcher;
DeleteWatcher delegate(watcher);
pump->WatchFileDescriptor(pipefds_[1],
false, MessagePumpLibevent::WATCH_READ_WRITE, watcher, &delegate);
// Spoof a libevent notification.
OnLibeventNotification(pump.get(), watcher);
}
class StopWatcher : public BaseWatcher {
public:
explicit StopWatcher(
MessagePumpLibevent::FileDescriptorWatcher* controller)
: BaseWatcher(controller) {}
virtual ~StopWatcher() {}
virtual void OnFileCanWriteWithoutBlocking(int /* fd */) OVERRIDE {
controller_->StopWatchingFileDescriptor();
}
};
TEST_F(MessagePumpLibeventTest, StopWatcher) {
scoped_refptr<MessagePumpLibevent> pump(new MessagePumpLibevent);
MessagePumpLibevent::FileDescriptorWatcher watcher;
StopWatcher delegate(&watcher);
pump->WatchFileDescriptor(pipefds_[1],
false, MessagePumpLibevent::WATCH_READ_WRITE, &watcher, &delegate);
// Spoof a libevent notification.
OnLibeventNotification(pump.get(), &watcher);
}
} // namespace
} // namespace base
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