webkit/blob/blob_url_request_job_unittest.cc - chromium - Git at Google

 // 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 <stack>
 #include <utility>

 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop_proxy.h"
 #include "base/scoped_temp_dir.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread.h"
 #include "base/time.h"
 #include "net/base/file_stream.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 #include "net/http/http_request_headers.h"
 #include "net/http/http_response_headers.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_error_job.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "webkit/blob/blob_data.h"
 #include "webkit/blob/blob_url_request_job.h"

 namespace webkit_blob {

 static const int kBufferSize = 1024;
 static const char kTestData1[] = "Hello";
 static const char kTestData2[] = "Here it is data.";
 static const char kTestFileData1[] = "0123456789";
 static const char kTestFileData2[] = "This is sample file.";
 static const char kTestContentType[] = "foo/bar";
 static const char kTestContentDisposition[] = "attachment; filename=foo.txt";

 class BlobURLRequestJobTest : public testing::Test {
  public:

   // Test Harness -------------------------------------------------------------
   // TODO(jianli): share this test harness with AppCacheURLRequestJobTest

   class MockURLRequestDelegate : public net::URLRequest::Delegate {
    public:
     explicit MockURLRequestDelegate(BlobURLRequestJobTest* test)
         : test_(test),
           received_data_(new net::IOBuffer(kBufferSize)) {
     }

     virtual void OnResponseStarted(net::URLRequest* request) {
       if (request->status().is_success()) {
         EXPECT_TRUE(request->response_headers());
         ReadSome(request);
       } else {
         RequestComplete();
       }
     }

     virtual void OnReadCompleted(net::URLRequest* request, int bytes_read) {
        if (bytes_read > 0)
          ReceiveData(request, bytes_read);
        else
          RequestComplete();
     }

     const std::string& response_data() const { return response_data_; }

    private:
     void ReadSome(net::URLRequest* request) {
       if (!request->is_pending()) {
         RequestComplete();
         return;
       }

       int bytes_read = 0;
       if (!request->Read(received_data_.get(), kBufferSize, &bytes_read)) {
         if (!request->status().is_io_pending()) {
           RequestComplete();
         }
         return;
       }

       ReceiveData(request, bytes_read);
     }

     void ReceiveData(net::URLRequest* request, int bytes_read) {
       if (bytes_read) {
         response_data_.append(received_data_->data(),
                               static_cast<size_t>(bytes_read));
         ReadSome(request);
       } else {
         RequestComplete();
       }
     }

     void RequestComplete() {
       test_->ScheduleNextTask();
     }

     BlobURLRequestJobTest* test_;
     scoped_refptr<net::IOBuffer> received_data_;
     std::string response_data_;
   };

   // Helper class run a test on our io_thread. The io_thread
   // is spun up once and reused for all tests.
   template <class Method>
   void MethodWrapper(Method method) {
     SetUpTest();
     (this->*method)();
   }

   void SetUp() {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());

     temp_file1_ = temp_dir_.path().AppendASCII("BlobFile1.dat");
     ASSERT_EQ(static_cast<int>(arraysize(kTestFileData1) - 1),
               file_util::WriteFile(temp_file1_, kTestFileData1,
                                    arraysize(kTestFileData1) - 1));
     base::PlatformFileInfo file_info1;
     file_util::GetFileInfo(temp_file1_, &file_info1);
     temp_file_modification_time1_ = file_info1.last_modified;

     temp_file2_ = temp_dir_.path().AppendASCII("BlobFile2.dat");
     ASSERT_EQ(static_cast<int>(arraysize(kTestFileData2) - 1),
               file_util::WriteFile(temp_file2_, kTestFileData2,
                                    arraysize(kTestFileData2) - 1));
     base::PlatformFileInfo file_info2;
     file_util::GetFileInfo(temp_file2_, &file_info2);
     temp_file_modification_time2_ = file_info2.last_modified;

     io_thread_.reset(new base::Thread("BlobRLRequestJobTest Thread"));
     base::Thread::Options options(MessageLoop::TYPE_IO, 0);
     io_thread_->StartWithOptions(options);
   }

   void TearDown() {
     io_thread_.reset(NULL);
   }

   static net::URLRequestJob* BlobURLRequestJobFactory(
       net::URLRequest* request,
       net::NetworkDelegate* network_delegate,
       const std::string& scheme) {
     BlobURLRequestJob* temp = blob_url_request_job_;
     blob_url_request_job_ = NULL;
     return temp;
   }

   BlobURLRequestJobTest()
       : expected_status_code_(0) {
   }

   template <class Method>
   void RunTestOnIOThread(Method method) {
     test_finished_event_ .reset(new base::WaitableEvent(false, false));
     io_thread_->message_loop()->PostTask(
         FROM_HERE, base::Bind(&BlobURLRequestJobTest::MethodWrapper<Method>,
                               base::Unretained(this), method));
     test_finished_event_->Wait();
   }

   void SetUpTest() {
     DCHECK(MessageLoop::current() == io_thread_->message_loop());

     net::URLRequest::Deprecated::RegisterProtocolFactory(
         "blob", &BlobURLRequestJobFactory);
     url_request_delegate_.reset(new MockURLRequestDelegate(this));
   }

   void TearDownTest() {
     DCHECK(MessageLoop::current() == io_thread_->message_loop());

     request_.reset();
     url_request_delegate_.reset();

     DCHECK(!blob_url_request_job_);
     net::URLRequest::Deprecated::RegisterProtocolFactory("blob", NULL);
   }

   void TestFinished() {
     // We unwind the stack prior to finishing up to let stack
     // based objects get deleted.
     DCHECK(MessageLoop::current() == io_thread_->message_loop());
     MessageLoop::current()->PostTask(
         FROM_HERE,
         base::Bind(&BlobURLRequestJobTest::TestFinishedUnwound,
                    base::Unretained(this)));
   }

   void TestFinishedUnwound() {
     TearDownTest();
     test_finished_event_->Signal();
   }

   void PushNextTask(const base::Closure& task) {
     task_stack_.push(std::pair<base::Closure, bool>(task, false));
   }

   void PushNextTaskAsImmediate(const base::Closure& task) {
     task_stack_.push(std::pair<base::Closure, bool>(task, true));
   }

   void ScheduleNextTask() {
     DCHECK(MessageLoop::current() == io_thread_->message_loop());
     if (task_stack_.empty()) {
       TestFinished();
       return;
     }

     base::Closure task = task_stack_.top().first;
     bool immediate = task_stack_.top().second;
     task_stack_.pop();
     if (immediate)
       task.Run();
     else
       MessageLoop::current()->PostTask(FROM_HERE, task);
   }

   void TestSuccessRequest(BlobData* blob_data,
                           const std::string& expected_response) {
     PushNextTask(base::Bind(&BlobURLRequestJobTest::VerifyResponse,
                             base::Unretained(this)));
     expected_status_code_ = 200;
     expected_response_ = expected_response;
     return TestRequest("GET", net::HttpRequestHeaders(), blob_data);
   }

   void TestErrorRequest(BlobData* blob_data,
                         int expected_status_code) {
     PushNextTask(base::Bind(&BlobURLRequestJobTest::VerifyResponse,
                             base::Unretained(this)));
     expected_status_code_ = expected_status_code;
     expected_response_ = "";
     return TestRequest("GET", net::HttpRequestHeaders(), blob_data);
   }

   void TestRequest(const std::string& method,
                    const net::HttpRequestHeaders& extra_headers,
                    BlobData* blob_data) {
     // This test has async steps.
     request_.reset(empty_context_.CreateRequest(
         GURL("blob:blah"), url_request_delegate_.get()));
     request_->set_method(method);
     blob_url_request_job_ = new BlobURLRequestJob(
         request_.get(),
         empty_context_.network_delegate(),
         blob_data,
         base::MessageLoopProxy::current());

     // Start the request.
     if (!extra_headers.IsEmpty())
       request_->SetExtraRequestHeaders(extra_headers);
     request_->Start();

     // Completion is async.
   }

   void VerifyResponse() {
     EXPECT_TRUE(request_->status().is_success());
     EXPECT_EQ(expected_status_code_,
               request_->response_headers()->response_code());
     EXPECT_STREQ(expected_response_.c_str(),
                  url_request_delegate_->response_data().c_str());
     TestFinished();
   }

   // Test Cases ---------------------------------------------------------------

   void TestGetSimpleDataRequest() {
     scoped_refptr<BlobData> blob_data(new BlobData());
     blob_data->AppendData(kTestData1);
     TestSuccessRequest(blob_data, kTestData1);
   }

   void TestGetSimpleFileRequest() {
     scoped_refptr<BlobData> blob_data(new BlobData());
     blob_data->AppendFile(temp_file1_, 0, -1, base::Time());
     TestSuccessRequest(blob_data, kTestFileData1);
   }

   void TestGetLargeFileRequest() {
     scoped_refptr<BlobData> blob_data(new BlobData());
     FilePath large_temp_file = temp_dir_.path().AppendASCII("LargeBlob.dat");
     std::string large_data;
     large_data.reserve(kBufferSize * 5);
     for (int i = 0; i < kBufferSize * 5; ++i)
       large_data.append(1, static_cast<char>(i % 256));
     ASSERT_EQ(static_cast<int>(large_data.size()),
               file_util::WriteFile(large_temp_file, large_data.data(),
                                    large_data.size()));
     blob_data->AppendFile(large_temp_file, 0, -1, base::Time());
     TestSuccessRequest(blob_data, large_data);
   }

   void TestGetNonExistentFileRequest() {
     FilePath non_existent_file =
         temp_file1_.InsertBeforeExtension(FILE_PATH_LITERAL("-na"));
     scoped_refptr<BlobData> blob_data(new BlobData());
     blob_data->AppendFile(non_existent_file, 0, -1, base::Time());
     TestErrorRequest(blob_data, 404);
   }

   void TestGetChangedFileRequest() {
     scoped_refptr<BlobData> blob_data(new BlobData());
     base::Time old_time =
         temp_file_modification_time1_ - base::TimeDelta::FromSeconds(10);
     blob_data->AppendFile(temp_file1_, 0, 3, old_time);
     TestErrorRequest(blob_data, 404);
   }

   void TestGetSlicedFileRequest() {
     scoped_refptr<BlobData> blob_data(new BlobData());
     blob_data->AppendFile(temp_file1_, 2, 4, temp_file_modification_time1_);
     std::string result(kTestFileData1 + 2, 4);
     TestSuccessRequest(blob_data, result);
   }

   scoped_refptr<BlobData> BuildComplicatedData(std::string* expected_result) {
     scoped_refptr<BlobData> blob_data(new BlobData());
     blob_data->AppendData(kTestData1 + 1, 2);
     blob_data->AppendFile(temp_file1_, 2, 3, temp_file_modification_time1_);
     blob_data->AppendData(kTestData2 + 3, 4);
     blob_data->AppendFile(temp_file2_, 4, 5, temp_file_modification_time2_);
     *expected_result = std::string(kTestData1 + 1, 2);
     *expected_result += std::string(kTestFileData1 + 2, 3);
     *expected_result += std::string(kTestData2 + 3, 4);
     *expected_result += std::string(kTestFileData2 + 4, 5);
     return blob_data;
   }

   void TestGetComplicatedDataAndFileRequest() {
     std::string result;
     scoped_refptr<BlobData> blob_data = BuildComplicatedData(&result);
     TestSuccessRequest(blob_data, result);
   }

   void TestGetRangeRequest1() {
     std::string result;
     scoped_refptr<BlobData> blob_data = BuildComplicatedData(&result);
     net::HttpRequestHeaders extra_headers;
     extra_headers.SetHeader(net::HttpRequestHeaders::kRange, "bytes=5-10");
     PushNextTask(base::Bind(&BlobURLRequestJobTest::VerifyResponse,
                             base::Unretained(this)));
     expected_status_code_ = 206;
     expected_response_ = result.substr(5, 10 - 5 + 1);
     return TestRequest("GET", extra_headers, blob_data);
   }

   void TestGetRangeRequest2() {
     std::string result;
     scoped_refptr<BlobData> blob_data = BuildComplicatedData(&result);
     net::HttpRequestHeaders extra_headers;
     extra_headers.SetHeader(net::HttpRequestHeaders::kRange, "bytes=-10");
     PushNextTask(base::Bind(&BlobURLRequestJobTest::VerifyResponse,
                             base::Unretained(this)));
     expected_status_code_ = 206;
     expected_response_ = result.substr(result.length() - 10);
     return TestRequest("GET", extra_headers, blob_data);
   }

   void TestExtraHeaders() {
     scoped_refptr<BlobData> blob_data(new BlobData());
     blob_data->set_content_type(kTestContentType);
     blob_data->set_content_disposition(kTestContentDisposition);
     blob_data->AppendData(kTestData1);
     PushNextTask(
         base::Bind(&BlobURLRequestJobTest::VerifyResponseForTestExtraHeaders,
                    base::Unretained(this)));
     TestRequest("GET", net::HttpRequestHeaders(), blob_data);
   }

   void VerifyResponseForTestExtraHeaders() {
     EXPECT_TRUE(request_->status().is_success());
     EXPECT_EQ(request_->response_headers()->response_code(), 200);
     EXPECT_STREQ(url_request_delegate_->response_data().c_str(), kTestData1);
     std::string content_type;
     EXPECT_TRUE(request_->response_headers()->GetMimeType(&content_type));
     EXPECT_STREQ(content_type.c_str(), kTestContentType);
     void* iter = NULL;
     std::string content_disposition;
     EXPECT_TRUE(request_->response_headers()->EnumerateHeader(
         &iter, "Content-Disposition", &content_disposition));
     EXPECT_STREQ(content_disposition.c_str(), kTestContentDisposition);
     TestFinished();
   }

  private:
   ScopedTempDir temp_dir_;
   FilePath temp_file1_;
   FilePath temp_file2_;
   base::Time temp_file_modification_time1_;
   base::Time temp_file_modification_time2_;
   scoped_ptr<base::Thread> io_thread_;
   static BlobURLRequestJob* blob_url_request_job_;

   scoped_ptr<base::WaitableEvent> test_finished_event_;
   std::stack<std::pair<base::Closure, bool> > task_stack_;
   net::URLRequestContext empty_context_;
   scoped_ptr<net::URLRequest> request_;
   scoped_ptr<MockURLRequestDelegate> url_request_delegate_;
   int expected_status_code_;
   std::string expected_response_;
 };

 // static
 BlobURLRequestJob* BlobURLRequestJobTest::blob_url_request_job_ = NULL;

 TEST_F(BlobURLRequestJobTest, TestGetSimpleDataRequest) {
   RunTestOnIOThread(&BlobURLRequestJobTest::TestGetSimpleDataRequest);
 }

 TEST_F(BlobURLRequestJobTest, TestGetSimpleFileRequest) {
   RunTestOnIOThread(&BlobURLRequestJobTest::TestGetSimpleFileRequest);
 }

 TEST_F(BlobURLRequestJobTest, TestGetLargeFileRequest) {
   RunTestOnIOThread(&BlobURLRequestJobTest::TestGetLargeFileRequest);
 }

 TEST_F(BlobURLRequestJobTest, TestGetSlicedFileRequest) {
   RunTestOnIOThread(&BlobURLRequestJobTest::TestGetSlicedFileRequest);
 }

 TEST_F(BlobURLRequestJobTest, TestGetNonExistentFileRequest) {
   RunTestOnIOThread(&BlobURLRequestJobTest::TestGetNonExistentFileRequest);
 }

 TEST_F(BlobURLRequestJobTest, TestGetChangedFileRequest) {
   RunTestOnIOThread(&BlobURLRequestJobTest::TestGetChangedFileRequest);
 }

 TEST_F(BlobURLRequestJobTest, TestGetComplicatedDataAndFileRequest) {
   RunTestOnIOThread(
       &BlobURLRequestJobTest::TestGetComplicatedDataAndFileRequest);
 }

 TEST_F(BlobURLRequestJobTest, TestGetRangeRequest1) {
   RunTestOnIOThread(&BlobURLRequestJobTest::TestGetRangeRequest1);
 }

 TEST_F(BlobURLRequestJobTest, TestGetRangeRequest2) {
   RunTestOnIOThread(&BlobURLRequestJobTest::TestGetRangeRequest2);
 }

 TEST_F(BlobURLRequestJobTest, TestExtraHeaders) {
   RunTestOnIOThread(&BlobURLRequestJobTest::TestExtraHeaders);
 }

 }  // namespace webkit_blob
	// 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 <stack>
	#include <utility>

	#include "base/bind.h"
	#include "base/bind_helpers.h"
	#include "base/file_path.h"
	#include "base/file_util.h"
	#include "base/memory/ref_counted.h"
	#include "base/memory/scoped_ptr.h"
	#include "base/message_loop_proxy.h"
	#include "base/scoped_temp_dir.h"
	#include "base/synchronization/waitable_event.h"
	#include "base/threading/thread.h"
	#include "base/time.h"
	#include "net/base/file_stream.h"
	#include "net/base/io_buffer.h"
	#include "net/base/net_errors.h"
	#include "net/http/http_request_headers.h"
	#include "net/http/http_response_headers.h"
	#include "net/url_request/url_request.h"
	#include "net/url_request/url_request_context.h"
	#include "net/url_request/url_request_error_job.h"
	#include "testing/gtest/include/gtest/gtest.h"
	#include "webkit/blob/blob_data.h"
	#include "webkit/blob/blob_url_request_job.h"

	namespace webkit_blob {

	static const int kBufferSize = 1024;
	static const char kTestData1[] = "Hello";
	static const char kTestData2[] = "Here it is data.";
	static const char kTestFileData1[] = "0123456789";
	static const char kTestFileData2[] = "This is sample file.";
	static const char kTestContentType[] = "foo/bar";
	static const char kTestContentDisposition[] = "attachment; filename=foo.txt";

	class BlobURLRequestJobTest : public testing::Test {
	public:

	// Test Harness -------------------------------------------------------------
	// TODO(jianli): share this test harness with AppCacheURLRequestJobTest

	class MockURLRequestDelegate : public net::URLRequest::Delegate {
	public:
	explicit MockURLRequestDelegate(BlobURLRequestJobTest* test)
	: test_(test),
	received_data_(new net::IOBuffer(kBufferSize)) {
	}

	virtual void OnResponseStarted(net::URLRequest* request) {
	if (request->status().is_success()) {
	EXPECT_TRUE(request->response_headers());
	ReadSome(request);
	} else {
	RequestComplete();
	}
	}

	virtual void OnReadCompleted(net::URLRequest* request, int bytes_read) {
	if (bytes_read > 0)
	ReceiveData(request, bytes_read);
	else
	RequestComplete();
	}

	const std::string& response_data() const { return response_data_; }

	private:
	void ReadSome(net::URLRequest* request) {
	if (!request->is_pending()) {
	RequestComplete();
	return;
	}

	int bytes_read = 0;
	if (!request->Read(received_data_.get(), kBufferSize, &bytes_read)) {
	if (!request->status().is_io_pending()) {
	RequestComplete();
	}
	return;
	}

	ReceiveData(request, bytes_read);
	}

	void ReceiveData(net::URLRequest* request, int bytes_read) {
	if (bytes_read) {
	response_data_.append(received_data_->data(),
	static_cast<size_t>(bytes_read));
	ReadSome(request);
	} else {
	RequestComplete();
	}
	}

	void RequestComplete() {
	test_->ScheduleNextTask();
	}

	BlobURLRequestJobTest* test_;
	scoped_refptr<net::IOBuffer> received_data_;
	std::string response_data_;
	};

	// Helper class run a test on our io_thread. The io_thread
	// is spun up once and reused for all tests.
	template <class Method>
	void MethodWrapper(Method method) {
	SetUpTest();
	(this->*method)();
	}

	void SetUp() {
	ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());

	temp_file1_ = temp_dir_.path().AppendASCII("BlobFile1.dat");
	ASSERT_EQ(static_cast<int>(arraysize(kTestFileData1) - 1),
	file_util::WriteFile(temp_file1_, kTestFileData1,
	arraysize(kTestFileData1) - 1));
	base::PlatformFileInfo file_info1;
	file_util::GetFileInfo(temp_file1_, &file_info1);
	temp_file_modification_time1_ = file_info1.last_modified;

	temp_file2_ = temp_dir_.path().AppendASCII("BlobFile2.dat");
	ASSERT_EQ(static_cast<int>(arraysize(kTestFileData2) - 1),
	file_util::WriteFile(temp_file2_, kTestFileData2,
	arraysize(kTestFileData2) - 1));
	base::PlatformFileInfo file_info2;
	file_util::GetFileInfo(temp_file2_, &file_info2);
	temp_file_modification_time2_ = file_info2.last_modified;

	io_thread_.reset(new base::Thread("BlobRLRequestJobTest Thread"));
	base::Thread::Options options(MessageLoop::TYPE_IO, 0);
	io_thread_->StartWithOptions(options);
	}

	void TearDown() {
	io_thread_.reset(NULL);
	}

	static net::URLRequestJob* BlobURLRequestJobFactory(
	net::URLRequest* request,
	net::NetworkDelegate* network_delegate,
	const std::string& scheme) {
	BlobURLRequestJob* temp = blob_url_request_job_;
	blob_url_request_job_ = NULL;
	return temp;
	}

	BlobURLRequestJobTest()
	: expected_status_code_(0) {
	}

	template <class Method>
	void RunTestOnIOThread(Method method) {
	test_finished_event_ .reset(new base::WaitableEvent(false, false));
	io_thread_->message_loop()->PostTask(
	FROM_HERE, base::Bind(&BlobURLRequestJobTest::MethodWrapper<Method>,
	base::Unretained(this), method));
	test_finished_event_->Wait();
	}

	void SetUpTest() {
	DCHECK(MessageLoop::current() == io_thread_->message_loop());

	net::URLRequest::Deprecated::RegisterProtocolFactory(
	"blob", &BlobURLRequestJobFactory);
	url_request_delegate_.reset(new MockURLRequestDelegate(this));
	}

	void TearDownTest() {
	DCHECK(MessageLoop::current() == io_thread_->message_loop());

	request_.reset();
	url_request_delegate_.reset();

	DCHECK(!blob_url_request_job_);
	net::URLRequest::Deprecated::RegisterProtocolFactory("blob", NULL);
	}

	void TestFinished() {
	// We unwind the stack prior to finishing up to let stack
	// based objects get deleted.
	DCHECK(MessageLoop::current() == io_thread_->message_loop());
	MessageLoop::current()->PostTask(
	FROM_HERE,
	base::Bind(&BlobURLRequestJobTest::TestFinishedUnwound,
	base::Unretained(this)));
	}

	void TestFinishedUnwound() {
	TearDownTest();
	test_finished_event_->Signal();
	}

	void PushNextTask(const base::Closure& task) {
	task_stack_.push(std::pair<base::Closure, bool>(task, false));
	}

	void PushNextTaskAsImmediate(const base::Closure& task) {
	task_stack_.push(std::pair<base::Closure, bool>(task, true));
	}

	void ScheduleNextTask() {
	DCHECK(MessageLoop::current() == io_thread_->message_loop());
	if (task_stack_.empty()) {
	TestFinished();
	return;
	}

	base::Closure task = task_stack_.top().first;
	bool immediate = task_stack_.top().second;
	task_stack_.pop();
	if (immediate)
	task.Run();
	else
	MessageLoop::current()->PostTask(FROM_HERE, task);
	}

	void TestSuccessRequest(BlobData* blob_data,
	const std::string& expected_response) {
	PushNextTask(base::Bind(&BlobURLRequestJobTest::VerifyResponse,
	base::Unretained(this)));
	expected_status_code_ = 200;
	expected_response_ = expected_response;
	return TestRequest("GET", net::HttpRequestHeaders(), blob_data);
	}

	void TestErrorRequest(BlobData* blob_data,
	int expected_status_code) {
	PushNextTask(base::Bind(&BlobURLRequestJobTest::VerifyResponse,
	base::Unretained(this)));
	expected_status_code_ = expected_status_code;
	expected_response_ = "";
	return TestRequest("GET", net::HttpRequestHeaders(), blob_data);
	}

	void TestRequest(const std::string& method,
	const net::HttpRequestHeaders& extra_headers,
	BlobData* blob_data) {
	// This test has async steps.
	request_.reset(empty_context_.CreateRequest(
	GURL("blob:blah"), url_request_delegate_.get()));
	request_->set_method(method);
	blob_url_request_job_ = new BlobURLRequestJob(
	request_.get(),
	empty_context_.network_delegate(),
	blob_data,
	base::MessageLoopProxy::current());

	// Start the request.
	if (!extra_headers.IsEmpty())
	request_->SetExtraRequestHeaders(extra_headers);
	request_->Start();

	// Completion is async.
	}

	void VerifyResponse() {
	EXPECT_TRUE(request_->status().is_success());
	EXPECT_EQ(expected_status_code_,
	request_->response_headers()->response_code());
	EXPECT_STREQ(expected_response_.c_str(),
	url_request_delegate_->response_data().c_str());
	TestFinished();
	}

	// Test Cases ---------------------------------------------------------------

	void TestGetSimpleDataRequest() {
	scoped_refptr<BlobData> blob_data(new BlobData());
	blob_data->AppendData(kTestData1);
	TestSuccessRequest(blob_data, kTestData1);
	}

	void TestGetSimpleFileRequest() {
	scoped_refptr<BlobData> blob_data(new BlobData());
	blob_data->AppendFile(temp_file1_, 0, -1, base::Time());
	TestSuccessRequest(blob_data, kTestFileData1);
	}

	void TestGetLargeFileRequest() {
	scoped_refptr<BlobData> blob_data(new BlobData());
	FilePath large_temp_file = temp_dir_.path().AppendASCII("LargeBlob.dat");
	std::string large_data;
	large_data.reserve(kBufferSize * 5);
	for (int i = 0; i < kBufferSize * 5; ++i)
	large_data.append(1, static_cast<char>(i % 256));
	ASSERT_EQ(static_cast<int>(large_data.size()),
	file_util::WriteFile(large_temp_file, large_data.data(),
	large_data.size()));
	blob_data->AppendFile(large_temp_file, 0, -1, base::Time());
	TestSuccessRequest(blob_data, large_data);
	}

	void TestGetNonExistentFileRequest() {
	FilePath non_existent_file =
	temp_file1_.InsertBeforeExtension(FILE_PATH_LITERAL("-na"));
	scoped_refptr<BlobData> blob_data(new BlobData());
	blob_data->AppendFile(non_existent_file, 0, -1, base::Time());
	TestErrorRequest(blob_data, 404);
	}

	void TestGetChangedFileRequest() {
	scoped_refptr<BlobData> blob_data(new BlobData());
	base::Time old_time =
	temp_file_modification_time1_ - base::TimeDelta::FromSeconds(10);
	blob_data->AppendFile(temp_file1_, 0, 3, old_time);
	TestErrorRequest(blob_data, 404);
	}

	void TestGetSlicedFileRequest() {
	scoped_refptr<BlobData> blob_data(new BlobData());
	blob_data->AppendFile(temp_file1_, 2, 4, temp_file_modification_time1_);
	std::string result(kTestFileData1 + 2, 4);
	TestSuccessRequest(blob_data, result);
	}

	scoped_refptr<BlobData> BuildComplicatedData(std::string* expected_result) {
	scoped_refptr<BlobData> blob_data(new BlobData());
	blob_data->AppendData(kTestData1 + 1, 2);
	blob_data->AppendFile(temp_file1_, 2, 3, temp_file_modification_time1_);
	blob_data->AppendData(kTestData2 + 3, 4);
	blob_data->AppendFile(temp_file2_, 4, 5, temp_file_modification_time2_);
	*expected_result = std::string(kTestData1 + 1, 2);
	*expected_result += std::string(kTestFileData1 + 2, 3);
	*expected_result += std::string(kTestData2 + 3, 4);
	*expected_result += std::string(kTestFileData2 + 4, 5);
	return blob_data;
	}

	void TestGetComplicatedDataAndFileRequest() {
	std::string result;
	scoped_refptr<BlobData> blob_data = BuildComplicatedData(&result);
	TestSuccessRequest(blob_data, result);
	}

	void TestGetRangeRequest1() {
	std::string result;
	scoped_refptr<BlobData> blob_data = BuildComplicatedData(&result);
	net::HttpRequestHeaders extra_headers;
	extra_headers.SetHeader(net::HttpRequestHeaders::kRange, "bytes=5-10");
	PushNextTask(base::Bind(&BlobURLRequestJobTest::VerifyResponse,
	base::Unretained(this)));
	expected_status_code_ = 206;
	expected_response_ = result.substr(5, 10 - 5 + 1);
	return TestRequest("GET", extra_headers, blob_data);
	}

	void TestGetRangeRequest2() {
	std::string result;
	scoped_refptr<BlobData> blob_data = BuildComplicatedData(&result);
	net::HttpRequestHeaders extra_headers;
	extra_headers.SetHeader(net::HttpRequestHeaders::kRange, "bytes=-10");
	PushNextTask(base::Bind(&BlobURLRequestJobTest::VerifyResponse,
	base::Unretained(this)));
	expected_status_code_ = 206;
	expected_response_ = result.substr(result.length() - 10);
	return TestRequest("GET", extra_headers, blob_data);
	}

	void TestExtraHeaders() {
	scoped_refptr<BlobData> blob_data(new BlobData());
	blob_data->set_content_type(kTestContentType);
	blob_data->set_content_disposition(kTestContentDisposition);
	blob_data->AppendData(kTestData1);
	PushNextTask(
	base::Bind(&BlobURLRequestJobTest::VerifyResponseForTestExtraHeaders,
	base::Unretained(this)));
	TestRequest("GET", net::HttpRequestHeaders(), blob_data);
	}

	void VerifyResponseForTestExtraHeaders() {
	EXPECT_TRUE(request_->status().is_success());
	EXPECT_EQ(request_->response_headers()->response_code(), 200);
	EXPECT_STREQ(url_request_delegate_->response_data().c_str(), kTestData1);
	std::string content_type;
	EXPECT_TRUE(request_->response_headers()->GetMimeType(&content_type));
	EXPECT_STREQ(content_type.c_str(), kTestContentType);
	void* iter = NULL;
	std::string content_disposition;
	EXPECT_TRUE(request_->response_headers()->EnumerateHeader(
	&iter, "Content-Disposition", &content_disposition));
	EXPECT_STREQ(content_disposition.c_str(), kTestContentDisposition);
	TestFinished();
	}

	private:
	ScopedTempDir temp_dir_;
	FilePath temp_file1_;
	FilePath temp_file2_;
	base::Time temp_file_modification_time1_;
	base::Time temp_file_modification_time2_;
	scoped_ptr<base::Thread> io_thread_;
	static BlobURLRequestJob* blob_url_request_job_;

	scoped_ptr<base::WaitableEvent> test_finished_event_;
	std::stack<std::pair<base::Closure, bool> > task_stack_;
	net::URLRequestContext empty_context_;
	scoped_ptr<net::URLRequest> request_;
	scoped_ptr<MockURLRequestDelegate> url_request_delegate_;
	int expected_status_code_;
	std::string expected_response_;
	};

	// static
	BlobURLRequestJob* BlobURLRequestJobTest::blob_url_request_job_ = NULL;

	TEST_F(BlobURLRequestJobTest, TestGetSimpleDataRequest) {
	RunTestOnIOThread(&BlobURLRequestJobTest::TestGetSimpleDataRequest);
	}

	TEST_F(BlobURLRequestJobTest, TestGetSimpleFileRequest) {
	RunTestOnIOThread(&BlobURLRequestJobTest::TestGetSimpleFileRequest);
	}

	TEST_F(BlobURLRequestJobTest, TestGetLargeFileRequest) {
	RunTestOnIOThread(&BlobURLRequestJobTest::TestGetLargeFileRequest);
	}

	TEST_F(BlobURLRequestJobTest, TestGetSlicedFileRequest) {
	RunTestOnIOThread(&BlobURLRequestJobTest::TestGetSlicedFileRequest);
	}

	TEST_F(BlobURLRequestJobTest, TestGetNonExistentFileRequest) {
	RunTestOnIOThread(&BlobURLRequestJobTest::TestGetNonExistentFileRequest);
	}

	TEST_F(BlobURLRequestJobTest, TestGetChangedFileRequest) {
	RunTestOnIOThread(&BlobURLRequestJobTest::TestGetChangedFileRequest);
	}

	TEST_F(BlobURLRequestJobTest, TestGetComplicatedDataAndFileRequest) {
	RunTestOnIOThread(
	&BlobURLRequestJobTest::TestGetComplicatedDataAndFileRequest);
	}

	TEST_F(BlobURLRequestJobTest, TestGetRangeRequest1) {
	RunTestOnIOThread(&BlobURLRequestJobTest::TestGetRangeRequest1);
	}

	TEST_F(BlobURLRequestJobTest, TestGetRangeRequest2) {
	RunTestOnIOThread(&BlobURLRequestJobTest::TestGetRangeRequest2);
	}

	TEST_F(BlobURLRequestJobTest, TestExtraHeaders) {
	RunTestOnIOThread(&BlobURLRequestJobTest::TestExtraHeaders);
	}

	} // namespace webkit_blob