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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/system/channel.h"
#include "base/bind.h"
#include "base/location.h"
#include "base/message_loop/message_loop.h"
#include "mojo/embedder/platform_channel_pair.h"
#include "mojo/system/local_message_pipe_endpoint.h"
#include "mojo/system/message_in_transit.h"
#include "mojo/system/message_pipe.h"
#include "mojo/system/proxy_message_pipe_endpoint.h"
#include "mojo/system/raw_channel.h"
#include "mojo/system/test_utils.h"
#include "mojo/system/waiter.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace mojo {
namespace system {
namespace {
enum Tristate {
TRISTATE_UNKNOWN = -1,
TRISTATE_FALSE = 0,
TRISTATE_TRUE = 1
};
Tristate BoolToTristate(bool b) {
return b ? TRISTATE_TRUE : TRISTATE_FALSE;
}
class ChannelTest : public testing::Test {
public:
ChannelTest()
: io_thread_(test::TestIOThread::kAutoStart),
init_result_(TRISTATE_UNKNOWN) {}
virtual ~ChannelTest() {}
virtual void SetUp() OVERRIDE {
io_thread_.PostTaskAndWait(
FROM_HERE,
base::Bind(&ChannelTest::SetUpOnIOThread, base::Unretained(this)));
}
void CreateChannelOnIOThread() {
CHECK_EQ(base::MessageLoop::current(), io_thread()->message_loop());
channel_ = new Channel();
}
void InitChannelOnIOThread() {
CHECK_EQ(base::MessageLoop::current(), io_thread()->message_loop());
CHECK(raw_channel_);
CHECK(channel_);
CHECK_EQ(init_result_, TRISTATE_UNKNOWN);
init_result_ = BoolToTristate(channel_->Init(raw_channel_.Pass()));
}
void ShutdownChannelOnIOThread() {
CHECK_EQ(base::MessageLoop::current(), io_thread()->message_loop());
CHECK(channel_);
channel_->Shutdown();
}
test::TestIOThread* io_thread() { return &io_thread_; }
RawChannel* raw_channel() { return raw_channel_.get(); }
scoped_ptr<RawChannel>* mutable_raw_channel() { return &raw_channel_; }
Channel* channel() { return channel_.get(); }
scoped_refptr<Channel>* mutable_channel() { return &channel_; }
Tristate init_result() const { return init_result_; }
private:
void SetUpOnIOThread() {
CHECK_EQ(base::MessageLoop::current(), io_thread()->message_loop());
embedder::PlatformChannelPair channel_pair;
raw_channel_ = RawChannel::Create(channel_pair.PassServerHandle()).Pass();
other_platform_handle_ = channel_pair.PassClientHandle();
}
test::TestIOThread io_thread_;
scoped_ptr<RawChannel> raw_channel_;
embedder::ScopedPlatformHandle other_platform_handle_;
scoped_refptr<Channel> channel_;
Tristate init_result_;
DISALLOW_COPY_AND_ASSIGN(ChannelTest);
};
// ChannelTest.InitShutdown ----------------------------------------------------
TEST_F(ChannelTest, InitShutdown) {
io_thread()->PostTaskAndWait(
FROM_HERE,
base::Bind(&ChannelTest::CreateChannelOnIOThread,
base::Unretained(this)));
ASSERT_TRUE(channel());
io_thread()->PostTaskAndWait(
FROM_HERE,
base::Bind(&ChannelTest::InitChannelOnIOThread,
base::Unretained(this)));
EXPECT_EQ(TRISTATE_TRUE, init_result());
io_thread()->PostTaskAndWait(
FROM_HERE,
base::Bind(&ChannelTest::ShutdownChannelOnIOThread,
base::Unretained(this)));
// Okay to destroy |Channel| on not-the-I/O-thread.
EXPECT_TRUE(channel()->HasOneRef());
*mutable_channel() = NULL;
}
// ChannelTest.InitFails -------------------------------------------------------
class MockRawChannelOnInitFails : public RawChannel {
public:
MockRawChannelOnInitFails() : on_init_called_(false) {}
virtual ~MockRawChannelOnInitFails() {}
virtual IOResult Read(size_t*) OVERRIDE {
CHECK(false);
return IO_FAILED;
}
virtual IOResult ScheduleRead() OVERRIDE {
CHECK(false);
return IO_FAILED;
}
virtual IOResult WriteNoLock(size_t*) OVERRIDE {
CHECK(false);
return IO_FAILED;
}
virtual IOResult ScheduleWriteNoLock() OVERRIDE {
CHECK(false);
return IO_FAILED;
}
virtual bool OnInit() OVERRIDE {
EXPECT_FALSE(on_init_called_);
on_init_called_ = true;
return false;
}
virtual void OnShutdownNoLock(scoped_ptr<ReadBuffer>,
scoped_ptr<WriteBuffer>) OVERRIDE {
CHECK(false);
}
private:
bool on_init_called_;
DISALLOW_COPY_AND_ASSIGN(MockRawChannelOnInitFails);
};
TEST_F(ChannelTest, InitFails) {
io_thread()->PostTaskAndWait(
FROM_HERE,
base::Bind(&ChannelTest::CreateChannelOnIOThread,
base::Unretained(this)));
ASSERT_TRUE(channel());
ASSERT_TRUE(raw_channel());
mutable_raw_channel()->reset(new MockRawChannelOnInitFails());
io_thread()->PostTaskAndWait(
FROM_HERE,
base::Bind(&ChannelTest::InitChannelOnIOThread,
base::Unretained(this)));
EXPECT_EQ(TRISTATE_FALSE, init_result());
// Should destroy |Channel| with no |Shutdown()| (on not-the-I/O-thread).
EXPECT_TRUE(channel()->HasOneRef());
*mutable_channel() = NULL;
}
// ChannelTest.CloseBeforeRun --------------------------------------------------
TEST_F(ChannelTest, CloseBeforeRun) {
io_thread()->PostTaskAndWait(
FROM_HERE,
base::Bind(&ChannelTest::CreateChannelOnIOThread,
base::Unretained(this)));
ASSERT_TRUE(channel());
io_thread()->PostTaskAndWait(
FROM_HERE,
base::Bind(&ChannelTest::InitChannelOnIOThread,
base::Unretained(this)));
EXPECT_EQ(TRISTATE_TRUE, init_result());
scoped_refptr<MessagePipe> mp(new MessagePipe(
scoped_ptr<MessagePipeEndpoint>(new LocalMessagePipeEndpoint()),
scoped_ptr<MessagePipeEndpoint>(new ProxyMessagePipeEndpoint())));
MessageInTransit::EndpointId local_id =
channel()->AttachMessagePipeEndpoint(mp, 1);
EXPECT_EQ(Channel::kBootstrapEndpointId, local_id);
mp->Close(0);
// TODO(vtl): Currently, the |Close()| above won't detach (since it thinks
// we're still expecting a "run" message from the other side), so the
// |RunMessagePipeEndpoint()| below will return true. We need to refactor
// |AttachMessagePipeEndpoint()| to indicate whether |Run...()| will
// necessarily be called or not. (Then, in the case that it may not be called,
// this will return false.)
EXPECT_TRUE(channel()->RunMessagePipeEndpoint(local_id,
Channel::kBootstrapEndpointId));
io_thread()->PostTaskAndWait(
FROM_HERE,
base::Bind(&ChannelTest::ShutdownChannelOnIOThread,
base::Unretained(this)));
EXPECT_TRUE(channel()->HasOneRef());
}
// ChannelTest.ShutdownAfterAttachAndRun ---------------------------------------
TEST_F(ChannelTest, ShutdownAfterAttach) {
io_thread()->PostTaskAndWait(
FROM_HERE,
base::Bind(&ChannelTest::CreateChannelOnIOThread,
base::Unretained(this)));
ASSERT_TRUE(channel());
io_thread()->PostTaskAndWait(
FROM_HERE,
base::Bind(&ChannelTest::InitChannelOnIOThread,
base::Unretained(this)));
EXPECT_EQ(TRISTATE_TRUE, init_result());
scoped_refptr<MessagePipe> mp(new MessagePipe(
scoped_ptr<MessagePipeEndpoint>(new LocalMessagePipeEndpoint()),
scoped_ptr<MessagePipeEndpoint>(new ProxyMessagePipeEndpoint())));
MessageInTransit::EndpointId local_id =
channel()->AttachMessagePipeEndpoint(mp, 1);
EXPECT_EQ(Channel::kBootstrapEndpointId, local_id);
// TODO(vtl): Currently, we always "expect" a |RunMessagePipeEndpoint()| after
// an |AttachMessagePipeEndpoint()| (which is actually incorrect). We need to
// refactor |AttachMessagePipeEndpoint()| to indicate whether |Run...()| will
// necessarily be called or not. (Then, in the case that it may not be called,
// we should test a |Shutdown()| without the |Run...()|.)
EXPECT_TRUE(channel()->RunMessagePipeEndpoint(local_id,
Channel::kBootstrapEndpointId));
Waiter waiter;
waiter.Init();
EXPECT_EQ(MOJO_RESULT_OK,
mp->AddWaiter(0, &waiter, MOJO_WAIT_FLAG_READABLE, 123));
// Don't wait for the shutdown to run ...
io_thread()->PostTask(FROM_HERE,
base::Bind(&ChannelTest::ShutdownChannelOnIOThread,
base::Unretained(this)));
// ... since this |Wait()| should fail once the channel is shut down.
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
waiter.Wait(MOJO_DEADLINE_INDEFINITE));
mp->RemoveWaiter(0, &waiter);
mp->Close(0);
EXPECT_TRUE(channel()->HasOneRef());
}
// ChannelTest.WaitAfterAttachRunAndShutdown -----------------------------------
TEST_F(ChannelTest, WaitAfterAttachRunAndShutdown) {
io_thread()->PostTaskAndWait(
FROM_HERE,
base::Bind(&ChannelTest::CreateChannelOnIOThread,
base::Unretained(this)));
ASSERT_TRUE(channel());
io_thread()->PostTaskAndWait(
FROM_HERE,
base::Bind(&ChannelTest::InitChannelOnIOThread,
base::Unretained(this)));
EXPECT_EQ(TRISTATE_TRUE, init_result());
scoped_refptr<MessagePipe> mp(new MessagePipe(
scoped_ptr<MessagePipeEndpoint>(new LocalMessagePipeEndpoint()),
scoped_ptr<MessagePipeEndpoint>(new ProxyMessagePipeEndpoint())));
MessageInTransit::EndpointId local_id =
channel()->AttachMessagePipeEndpoint(mp, 1);
EXPECT_EQ(Channel::kBootstrapEndpointId, local_id);
EXPECT_TRUE(channel()->RunMessagePipeEndpoint(local_id,
Channel::kBootstrapEndpointId));
io_thread()->PostTaskAndWait(
FROM_HERE,
base::Bind(&ChannelTest::ShutdownChannelOnIOThread,
base::Unretained(this)));
Waiter waiter;
waiter.Init();
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
mp->AddWaiter(0, &waiter, MOJO_WAIT_FLAG_READABLE, 123));
mp->Close(0);
EXPECT_TRUE(channel()->HasOneRef());
}
// TODO(vtl): More. ------------------------------------------------------------
} // namespace
} // namespace system
} // namespace mojo
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