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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 <stdlib.h>
#include <string.h>
#include "mojo/public/cpp/bindings/lib/connector.h"
#include "mojo/public/cpp/bindings/lib/message_builder.h"
#include "mojo/public/cpp/bindings/lib/message_queue.h"
#include "mojo/public/cpp/environment/environment.h"
#include "mojo/public/cpp/system/macros.h"
#include "mojo/public/cpp/utility/run_loop.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace mojo {
namespace test {
namespace {
class MessageAccumulator : public MessageReceiver {
public:
MessageAccumulator() {
}
virtual bool Accept(Message* message) MOJO_OVERRIDE {
queue_.Push(message);
return true;
}
virtual bool AcceptWithResponder(Message* message, MessageReceiver* responder)
MOJO_OVERRIDE {
return false;
}
bool IsEmpty() const {
return queue_.IsEmpty();
}
void Pop(Message* message) {
queue_.Pop(message);
}
private:
internal::MessageQueue queue_;
};
class ConnectorTest : public testing::Test {
public:
ConnectorTest() {
}
virtual void SetUp() MOJO_OVERRIDE {
CreateMessagePipe(&handle0_, &handle1_);
}
virtual void TearDown() MOJO_OVERRIDE {
}
void AllocMessage(const char* text, Message* message) {
size_t payload_size = strlen(text) + 1; // Plus null terminator.
internal::MessageBuilder builder(1, payload_size);
memcpy(builder.buffer()->Allocate(payload_size), text, payload_size);
builder.Finish(message);
}
void PumpMessages() {
loop_.RunUntilIdle();
}
protected:
ScopedMessagePipeHandle handle0_;
ScopedMessagePipeHandle handle1_;
private:
Environment env_;
RunLoop loop_;
};
TEST_F(ConnectorTest, Basic) {
internal::Connector connector0(handle0_.Pass());
internal::Connector connector1(handle1_.Pass());
const char kText[] = "hello world";
Message message;
AllocMessage(kText, &message);
connector0.Accept(&message);
MessageAccumulator accumulator;
connector1.set_incoming_receiver(&accumulator);
PumpMessages();
ASSERT_FALSE(accumulator.IsEmpty());
Message message_received;
accumulator.Pop(&message_received);
EXPECT_EQ(
std::string(kText),
std::string(reinterpret_cast<const char*>(message_received.payload())));
}
TEST_F(ConnectorTest, Basic_EarlyIncomingReceiver) {
internal::Connector connector0(handle0_.Pass());
internal::Connector connector1(handle1_.Pass());
MessageAccumulator accumulator;
connector1.set_incoming_receiver(&accumulator);
const char kText[] = "hello world";
Message message;
AllocMessage(kText, &message);
connector0.Accept(&message);
PumpMessages();
ASSERT_FALSE(accumulator.IsEmpty());
Message message_received;
accumulator.Pop(&message_received);
EXPECT_EQ(
std::string(kText),
std::string(reinterpret_cast<const char*>(message_received.payload())));
}
TEST_F(ConnectorTest, Basic_TwoMessages) {
internal::Connector connector0(handle0_.Pass());
internal::Connector connector1(handle1_.Pass());
const char* kText[] = { "hello", "world" };
for (size_t i = 0; i < MOJO_ARRAYSIZE(kText); ++i) {
Message message;
AllocMessage(kText[i], &message);
connector0.Accept(&message);
}
MessageAccumulator accumulator;
connector1.set_incoming_receiver(&accumulator);
PumpMessages();
for (size_t i = 0; i < MOJO_ARRAYSIZE(kText); ++i) {
ASSERT_FALSE(accumulator.IsEmpty());
Message message_received;
accumulator.Pop(&message_received);
EXPECT_EQ(
std::string(kText[i]),
std::string(reinterpret_cast<const char*>(message_received.payload())));
}
}
TEST_F(ConnectorTest, WriteToClosedPipe) {
internal::Connector connector0(handle0_.Pass());
const char kText[] = "hello world";
Message message;
AllocMessage(kText, &message);
// Close the other end of the pipe.
handle1_.reset();
// Not observed yet because we haven't spun the RunLoop yet.
EXPECT_FALSE(connector0.encountered_error());
// Write failures are not reported.
bool ok = connector0.Accept(&message);
EXPECT_TRUE(ok);
// Still not observed.
EXPECT_FALSE(connector0.encountered_error());
// Spin the RunLoop, and then we should start observing the closed pipe.
PumpMessages();
EXPECT_TRUE(connector0.encountered_error());
}
// Enable this test once MojoWriteMessage supports passing handles.
TEST_F(ConnectorTest, MessageWithHandles) {
internal::Connector connector0(handle0_.Pass());
internal::Connector connector1(handle1_.Pass());
const char kText[] = "hello world";
Message message1;
AllocMessage(kText, &message1);
ScopedMessagePipeHandle handles[2];
CreateMessagePipe(&handles[0], &handles[1]);
message1.mutable_handles()->push_back(handles[0].release());
connector0.Accept(&message1);
// The message should have been transferred, releasing the handles.
EXPECT_TRUE(message1.handles()->empty());
MessageAccumulator accumulator;
connector1.set_incoming_receiver(&accumulator);
PumpMessages();
ASSERT_FALSE(accumulator.IsEmpty());
Message message_received;
accumulator.Pop(&message_received);
EXPECT_EQ(
std::string(kText),
std::string(reinterpret_cast<const char*>(message_received.payload())));
ASSERT_EQ(1U, message_received.handles()->size());
// Now send a message to the transferred handle and confirm it's sent through
// to the orginal pipe.
// TODO(vtl): Do we need a better way of "downcasting" the handle types?
ScopedMessagePipeHandle smph;
smph.reset(MessagePipeHandle(message_received.handles()->front().value()));
message_received.mutable_handles()->front() = Handle();
// |smph| now owns this handle.
internal::Connector connector_received(smph.Pass());
internal::Connector connector_original(handles[1].Pass());
Message message2;
AllocMessage(kText, &message2);
connector_received.Accept(&message2);
connector_original.set_incoming_receiver(&accumulator);
PumpMessages();
ASSERT_FALSE(accumulator.IsEmpty());
accumulator.Pop(&message_received);
EXPECT_EQ(
std::string(kText),
std::string(reinterpret_cast<const char*>(message_received.payload())));
}
} // namespace
} // namespace test
} // namespace mojo
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