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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 "remoting/host/native_messaging/native_messaging_writer.h"
#include "base/basictypes.h"
#include "base/json/json_reader.h"
#include "base/memory/scoped_ptr.h"
#include "base/platform_file.h"
#include "base/stl_util.h"
#include "base/values.h"
#include "remoting/host/setup/test_util.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace remoting {
class NativeMessagingWriterTest : public testing::Test {
public:
NativeMessagingWriterTest();
virtual ~NativeMessagingWriterTest();
virtual void SetUp() OVERRIDE;
virtual void TearDown() OVERRIDE;
protected:
scoped_ptr<NativeMessagingWriter> writer_;
base::PlatformFile read_handle_;
base::PlatformFile write_handle_;
bool read_handle_open_;
};
NativeMessagingWriterTest::NativeMessagingWriterTest() {}
NativeMessagingWriterTest::~NativeMessagingWriterTest() {}
void NativeMessagingWriterTest::SetUp() {
ASSERT_TRUE(MakePipe(&read_handle_, &write_handle_));
writer_.reset(new NativeMessagingWriter(write_handle_));
read_handle_open_ = true;
}
void NativeMessagingWriterTest::TearDown() {
// |write_handle_| is owned by NativeMessagingWriter's FileStream, so don't
// try to close it here. And close |read_handle_| only if it hasn't
// already been closed.
if (read_handle_open_)
base::ClosePlatformFile(read_handle_);
}
TEST_F(NativeMessagingWriterTest, GoodMessage) {
base::DictionaryValue message;
message.SetInteger("foo", 42);
EXPECT_TRUE(writer_->WriteMessage(message));
// Read from the pipe and verify the content.
uint32 length;
int read = base::ReadPlatformFileAtCurrentPos(
read_handle_, reinterpret_cast<char*>(&length), 4);
EXPECT_EQ(4, read);
std::string content(length, '\0');
read = base::ReadPlatformFileAtCurrentPos(read_handle_,
string_as_array(&content), length);
EXPECT_EQ(static_cast<int>(length), read);
// |content| should now contain serialized |message|.
scoped_ptr<base::Value> written_message(base::JSONReader::Read(content));
EXPECT_TRUE(message.Equals(written_message.get()));
// Nothing more should have been written. Close the write-end of the pipe,
// and verify the read end immediately hits EOF.
writer_.reset(NULL);
char unused;
read = base::ReadPlatformFileAtCurrentPos(read_handle_, &unused, 1);
EXPECT_LE(read, 0);
}
TEST_F(NativeMessagingWriterTest, SecondMessage) {
base::DictionaryValue message1;
base::DictionaryValue message2;
message2.SetInteger("foo", 42);
EXPECT_TRUE(writer_->WriteMessage(message1));
EXPECT_TRUE(writer_->WriteMessage(message2));
writer_.reset(NULL);
// Read two messages.
uint32 length;
int read;
std::string content;
for (int i = 0; i < 2; i++) {
read = base::ReadPlatformFileAtCurrentPos(
read_handle_, reinterpret_cast<char*>(&length), 4);
EXPECT_EQ(4, read) << "i = " << i;
content.resize(length);
read = base::ReadPlatformFileAtCurrentPos(read_handle_,
string_as_array(&content),
length);
EXPECT_EQ(static_cast<int>(length), read) << "i = " << i;
}
// |content| should now contain serialized |message2|.
scoped_ptr<base::Value> written_message2(base::JSONReader::Read(content));
EXPECT_TRUE(message2.Equals(written_message2.get()));
}
TEST_F(NativeMessagingWriterTest, FailedWrite) {
// Close the read end so that writing fails immediately.
base::ClosePlatformFile(read_handle_);
read_handle_open_ = false;
base::DictionaryValue message;
EXPECT_FALSE(writer_->WriteMessage(message));
}
} // namespace remoting
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