src/content/browser/loader/resource_loader_unittest.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/browser/loader/resource_loader.h"
   6
   7 #include "base/files/file.h"
   8 #include "base/files/file_util.h"
   9 #include "base/message_loop/message_loop_proxy.h"
  10 #include "base/run_loop.h"
  11 #include "content/browser/browser_thread_impl.h"
  12 #include "content/browser/loader/redirect_to_file_resource_handler.h"
  13 #include "content/browser/loader/resource_loader_delegate.h"
  14 #include "content/public/browser/resource_request_info.h"
  15 #include "content/public/common/resource_response.h"
  16 #include "content/public/test/mock_resource_context.h"
  17 #include "content/public/test/test_browser_thread_bundle.h"
  18 #include "content/test/test_content_browser_client.h"
  19 #include "ipc/ipc_message.h"
  20 #include "net/base/io_buffer.h"
  21 #include "net/base/mock_file_stream.h"
  22 #include "net/base/request_priority.h"
  23 #include "net/cert/x509_certificate.h"
  24 #include "net/ssl/client_cert_store.h"
  25 #include "net/ssl/ssl_cert_request_info.h"
  26 #include "net/url_request/url_request.h"
  27 #include "net/url_request/url_request_job_factory_impl.h"
  28 #include "net/url_request/url_request_test_job.h"
  29 #include "net/url_request/url_request_test_util.h"
  30 #include "storage/common/blob/shareable_file_reference.h"
  31 #include "testing/gtest/include/gtest/gtest.h"
  32
  33 using storage::ShareableFileReference;
  34
  35 namespace content {
  36 namespace {
  37
  38 // Stub client certificate store that returns a preset list of certificates for
  39 // each request and records the arguments of the most recent request for later
  40 // inspection.
  41 class ClientCertStoreStub : public net::ClientCertStore {
  42  public:
  43   ClientCertStoreStub(const net::CertificateList& certs)
  44       : response_(certs),
  45         request_count_(0) {}
  46
  47   virtual ~ClientCertStoreStub() {}
  48
  49   // Returns |cert_authorities| field of the certificate request passed in the
  50   // most recent call to GetClientCerts().
  51   // TODO(ppi): Make the stub independent from the internal representation of
  52   // SSLCertRequestInfo. For now it seems that we cannot neither save the
  53   // scoped_refptr<> (since it is never passed to us) nor copy the entire
  54   // CertificateRequestInfo (since there is no copy constructor).
  55   std::vector<std::string> requested_authorities() {
  56     return requested_authorities_;
  57   }
  58
  59   // Returns the number of calls to GetClientCerts().
  60   int request_count() {
  61     return request_count_;
  62   }
  63
  64   // net::ClientCertStore:
  65   virtual void GetClientCerts(const net::SSLCertRequestInfo& cert_request_info,
  66                               net::CertificateList* selected_certs,
  67                               const base::Closure& callback) OVERRIDE {
  68     ++request_count_;
  69     requested_authorities_ = cert_request_info.cert_authorities;
  70     *selected_certs = response_;
  71     callback.Run();
  72   }
  73
  74  private:
  75   const net::CertificateList response_;
  76   int request_count_;
  77   std::vector<std::string> requested_authorities_;
  78 };
  79
  80 // Arbitrary read buffer size.
  81 const int kReadBufSize = 1024;
  82
  83 // Dummy implementation of ResourceHandler, instance of which is needed to
  84 // initialize ResourceLoader.
  85 class ResourceHandlerStub : public ResourceHandler {
  86  public:
  87   explicit ResourceHandlerStub(net::URLRequest* request)
  88       : ResourceHandler(request),
  89         read_buffer_(new net::IOBuffer(kReadBufSize)),
  90         defer_request_on_will_start_(false),
  91         expect_reads_(true),
  92         cancel_on_read_completed_(false),
  93         defer_eof_(false),
  94         received_on_will_read_(false),
  95         received_eof_(false),
  96         received_response_completed_(false),
  97         total_bytes_downloaded_(0) {
  98   }
  99
 100   // If true, defers the resource load in OnWillStart.
 101   void set_defer_request_on_will_start(bool defer_request_on_will_start) {
 102     defer_request_on_will_start_ = defer_request_on_will_start;
 103   }
 104
 105   // If true, expect OnWillRead / OnReadCompleted pairs for handling
 106   // data. Otherwise, expect OnDataDownloaded.
 107   void set_expect_reads(bool expect_reads) { expect_reads_ = expect_reads; }
 108
 109   // If true, cancel the request in OnReadCompleted by returning false.
 110   void set_cancel_on_read_completed(bool cancel_on_read_completed) {
 111     cancel_on_read_completed_ = cancel_on_read_completed;
 112   }
 113
 114   // If true, cancel the request in OnReadCompleted by returning false.
 115   void set_defer_eof(bool defer_eof) { defer_eof_ = defer_eof; }
 116
 117   const GURL& start_url() const { return start_url_; }
 118   ResourceResponse* response() const { return response_.get(); }
 119   bool received_response_completed() const {
 120     return received_response_completed_;
 121   }
 122   const net::URLRequestStatus& status() const { return status_; }
 123   int total_bytes_downloaded() const { return total_bytes_downloaded_; }
 124
 125   void Resume() {
 126     controller()->Resume();
 127   }
 128
 129   // ResourceHandler implementation:
 130   virtual bool OnUploadProgress(uint64 position, uint64 size) OVERRIDE {
 131     NOTREACHED();
 132     return true;
 133   }
 134
 135   virtual bool OnRequestRedirected(const net::RedirectInfo& redirect_info,
 136                                    ResourceResponse* response,
 137                                    bool* defer) OVERRIDE {
 138     NOTREACHED();
 139     return true;
 140   }
 141
 142   virtual bool OnResponseStarted(ResourceResponse* response,
 143                                  bool* defer) OVERRIDE {
 144     EXPECT_FALSE(response_.get());
 145     response_ = response;
 146     return true;
 147   }
 148
 149   virtual bool OnWillStart(const GURL& url, bool* defer) OVERRIDE {
 150     EXPECT_TRUE(start_url_.is_empty());
 151     start_url_ = url;
 152     *defer = defer_request_on_will_start_;
 153     return true;
 154   }
 155
 156   virtual bool OnBeforeNetworkStart(const GURL& url, bool* defer) OVERRIDE {
 157     return true;
 158   }
 159
 160   virtual bool OnWillRead(scoped_refptr<net::IOBuffer>* buf,
 161                           int* buf_size,
 162                           int min_size) OVERRIDE {
 163     EXPECT_TRUE(expect_reads_);
 164     EXPECT_FALSE(received_on_will_read_);
 165     EXPECT_FALSE(received_eof_);
 166     EXPECT_FALSE(received_response_completed_);
 167
 168     *buf = read_buffer_;
 169     *buf_size = kReadBufSize;
 170     received_on_will_read_ = true;
 171     return true;
 172   }
 173
 174   virtual bool OnReadCompleted(int bytes_read, bool* defer) OVERRIDE {
 175     EXPECT_TRUE(received_on_will_read_);
 176     EXPECT_TRUE(expect_reads_);
 177     EXPECT_FALSE(received_response_completed_);
 178
 179     if (bytes_read == 0) {
 180       received_eof_ = true;
 181       if (defer_eof_) {
 182         defer_eof_ = false;
 183         *defer = true;
 184       }
 185     }
 186
 187     // Need another OnWillRead() call before seeing an OnReadCompleted().
 188     received_on_will_read_ = false;
 189
 190     return !cancel_on_read_completed_;
 191   }
 192
 193   virtual void OnResponseCompleted(const net::URLRequestStatus& status,
 194                                    const std::string& security_info,
 195                                    bool* defer) OVERRIDE {
 196     EXPECT_FALSE(received_response_completed_);
 197     if (status.is_success() && expect_reads_)
 198       EXPECT_TRUE(received_eof_);
 199
 200     received_response_completed_ = true;
 201     status_ = status;
 202   }
 203
 204   virtual void OnDataDownloaded(int bytes_downloaded) OVERRIDE {
 205     EXPECT_FALSE(expect_reads_);
 206     total_bytes_downloaded_ += bytes_downloaded;
 207   }
 208
 209  private:
 210   scoped_refptr<net::IOBuffer> read_buffer_;
 211
 212   bool defer_request_on_will_start_;
 213   bool expect_reads_;
 214   bool cancel_on_read_completed_;
 215   bool defer_eof_;
 216
 217   GURL start_url_;
 218   scoped_refptr<ResourceResponse> response_;
 219   bool received_on_will_read_;
 220   bool received_eof_;
 221   bool received_response_completed_;
 222   net::URLRequestStatus status_;
 223   int total_bytes_downloaded_;
 224 };
 225
 226 // Test browser client that captures calls to SelectClientCertificates and
 227 // records the arguments of the most recent call for later inspection.
 228 class SelectCertificateBrowserClient : public TestContentBrowserClient {
 229  public:
 230   SelectCertificateBrowserClient() : call_count_(0) {}
 231
 232   virtual void SelectClientCertificate(
 233       int render_process_id,
 234       int render_view_id,
 235       const net::HttpNetworkSession* network_session,
 236       net::SSLCertRequestInfo* cert_request_info,
 237       const base::Callback<void(net::X509Certificate*)>& callback) OVERRIDE {
 238     ++call_count_;
 239     passed_certs_ = cert_request_info->client_certs;
 240   }
 241
 242   int call_count() {
 243     return call_count_;
 244   }
 245
 246   net::CertificateList passed_certs() {
 247     return passed_certs_;
 248   }
 249
 250  private:
 251   net::CertificateList passed_certs_;
 252   int call_count_;
 253 };
 254
 255 class ResourceContextStub : public MockResourceContext {
 256  public:
 257   explicit ResourceContextStub(net::URLRequestContext* test_request_context)
 258       : MockResourceContext(test_request_context) {}
 259
 260   virtual scoped_ptr<net::ClientCertStore> CreateClientCertStore() OVERRIDE {
 261     return dummy_cert_store_.Pass();
 262   }
 263
 264   void SetClientCertStore(scoped_ptr<net::ClientCertStore> store) {
 265     dummy_cert_store_ = store.Pass();
 266   }
 267
 268  private:
 269   scoped_ptr<net::ClientCertStore> dummy_cert_store_;
 270 };
 271
 272 // Fails to create a temporary file with the given error.
 273 void CreateTemporaryError(
 274     base::File::Error error,
 275     const CreateTemporaryFileStreamCallback& callback) {
 276   base::MessageLoop::current()->PostTask(
 277       FROM_HERE,
 278       base::Bind(callback, error, base::Passed(scoped_ptr<net::FileStream>()),
 279                  scoped_refptr<ShareableFileReference>()));
 280 }
 281
 282 }  // namespace
 283
 284 class ResourceLoaderTest : public testing::Test,
 285                            public ResourceLoaderDelegate {
 286  protected:
 287   ResourceLoaderTest()
 288     : thread_bundle_(content::TestBrowserThreadBundle::IO_MAINLOOP),
 289       resource_context_(&test_url_request_context_),
 290       raw_ptr_resource_handler_(NULL),
 291       raw_ptr_to_request_(NULL) {
 292     job_factory_.SetProtocolHandler(
 293         "test", net::URLRequestTestJob::CreateProtocolHandler());
 294     test_url_request_context_.set_job_factory(&job_factory_);
 295   }
 296
 297   GURL test_url() const {
 298     return net::URLRequestTestJob::test_url_1();
 299   }
 300
 301   std::string test_data() const {
 302     return net::URLRequestTestJob::test_data_1();
 303   }
 304
 305   virtual scoped_ptr<ResourceHandler> WrapResourceHandler(
 306       scoped_ptr<ResourceHandlerStub> leaf_handler,
 307       net::URLRequest* request) {
 308     return leaf_handler.PassAs<ResourceHandler>();
 309   }
 310
 311   virtual void SetUp() OVERRIDE {
 312     const int kRenderProcessId = 1;
 313     const int kRenderViewId = 2;
 314
 315     scoped_ptr<net::URLRequest> request(
 316         resource_context_.GetRequestContext()->CreateRequest(
 317             test_url(),
 318             net::DEFAULT_PRIORITY,
 319             NULL /* delegate */,
 320             NULL /* cookie_store */));
 321     raw_ptr_to_request_ = request.get();
 322     ResourceRequestInfo::AllocateForTesting(request.get(),
 323                                             RESOURCE_TYPE_MAIN_FRAME,
 324                                             &resource_context_,
 325                                             kRenderProcessId,
 326                                             kRenderViewId,
 327                                             MSG_ROUTING_NONE,
 328                                             false);
 329     scoped_ptr<ResourceHandlerStub> resource_handler(
 330         new ResourceHandlerStub(request.get()));
 331     raw_ptr_resource_handler_ = resource_handler.get();
 332     loader_.reset(new ResourceLoader(
 333         request.Pass(),
 334         WrapResourceHandler(resource_handler.Pass(), raw_ptr_to_request_),
 335         this));
 336   }
 337
 338   // ResourceLoaderDelegate:
 339   virtual ResourceDispatcherHostLoginDelegate* CreateLoginDelegate(
 340       ResourceLoader* loader,
 341       net::AuthChallengeInfo* auth_info) OVERRIDE {
 342     return NULL;
 343   }
 344   virtual bool HandleExternalProtocol(ResourceLoader* loader,
 345                                       const GURL& url) OVERRIDE {
 346     return false;
 347   }
 348   virtual void DidStartRequest(ResourceLoader* loader) OVERRIDE {}
 349   virtual void DidReceiveRedirect(ResourceLoader* loader,
 350                                   const GURL& new_url) OVERRIDE {}
 351   virtual void DidReceiveResponse(ResourceLoader* loader) OVERRIDE {}
 352   virtual void DidFinishLoading(ResourceLoader* loader) OVERRIDE {}
 353
 354   content::TestBrowserThreadBundle thread_bundle_;
 355
 356   net::URLRequestJobFactoryImpl job_factory_;
 357   net::TestURLRequestContext test_url_request_context_;
 358   ResourceContextStub resource_context_;
 359
 360   // The ResourceLoader owns the URLRequest and the ResourceHandler.
 361   ResourceHandlerStub* raw_ptr_resource_handler_;
 362   net::URLRequest* raw_ptr_to_request_;
 363   scoped_ptr<ResourceLoader> loader_;
 364 };
 365
 366 // Verifies if a call to net::UrlRequest::Delegate::OnCertificateRequested()
 367 // causes client cert store to be queried for certificates and if the returned
 368 // certificates are correctly passed to the content browser client for
 369 // selection.
 370 TEST_F(ResourceLoaderTest, ClientCertStoreLookup) {
 371   // Set up the test client cert store.
 372   net::CertificateList dummy_certs(1, scoped_refptr<net::X509Certificate>(
 373       new net::X509Certificate("test", "test", base::Time(), base::Time())));
 374   scoped_ptr<ClientCertStoreStub> test_store(
 375       new ClientCertStoreStub(dummy_certs));
 376   EXPECT_EQ(0, test_store->request_count());
 377
 378   // Ownership of the |test_store| is about to be turned over to ResourceLoader.
 379   // We need to keep raw pointer copies to access these objects later.
 380   ClientCertStoreStub* raw_ptr_to_store = test_store.get();
 381   resource_context_.SetClientCertStore(
 382       test_store.PassAs<net::ClientCertStore>());
 383
 384   // Prepare a dummy certificate request.
 385   scoped_refptr<net::SSLCertRequestInfo> cert_request_info(
 386       new net::SSLCertRequestInfo());
 387   std::vector<std::string> dummy_authority(1, "dummy");
 388   cert_request_info->cert_authorities = dummy_authority;
 389
 390   // Plug in test content browser client.
 391   SelectCertificateBrowserClient test_client;
 392   ContentBrowserClient* old_client = SetBrowserClientForTesting(&test_client);
 393
 394   // Everything is set up. Trigger the resource loader certificate request event
 395   // and run the message loop.
 396   loader_->OnCertificateRequested(raw_ptr_to_request_, cert_request_info.get());
 397   base::RunLoop().RunUntilIdle();
 398
 399   // Restore the original content browser client.
 400   SetBrowserClientForTesting(old_client);
 401
 402   // Check if the test store was queried against correct |cert_authorities|.
 403   EXPECT_EQ(1, raw_ptr_to_store->request_count());
 404   EXPECT_EQ(dummy_authority, raw_ptr_to_store->requested_authorities());
 405
 406   // Check if the retrieved certificates were passed to the content browser
 407   // client.
 408   EXPECT_EQ(1, test_client.call_count());
 409   EXPECT_EQ(dummy_certs, test_client.passed_certs());
 410 }
 411
 412 // Verifies if a call to net::URLRequest::Delegate::OnCertificateRequested()
 413 // on a platform with a NULL client cert store still calls the content browser
 414 // client for selection.
 415 TEST_F(ResourceLoaderTest, ClientCertStoreNull) {
 416   // Prepare a dummy certificate request.
 417   scoped_refptr<net::SSLCertRequestInfo> cert_request_info(
 418       new net::SSLCertRequestInfo());
 419   std::vector<std::string> dummy_authority(1, "dummy");
 420   cert_request_info->cert_authorities = dummy_authority;
 421
 422   // Plug in test content browser client.
 423   SelectCertificateBrowserClient test_client;
 424   ContentBrowserClient* old_client = SetBrowserClientForTesting(&test_client);
 425
 426   // Everything is set up. Trigger the resource loader certificate request event
 427   // and run the message loop.
 428   loader_->OnCertificateRequested(raw_ptr_to_request_, cert_request_info.get());
 429   base::RunLoop().RunUntilIdle();
 430
 431   // Restore the original content browser client.
 432   SetBrowserClientForTesting(old_client);
 433
 434   // Check if the SelectClientCertificate was called on the content browser
 435   // client.
 436   EXPECT_EQ(1, test_client.call_count());
 437   EXPECT_EQ(net::CertificateList(), test_client.passed_certs());
 438 }
 439
 440 TEST_F(ResourceLoaderTest, ResumeCancelledRequest) {
 441   raw_ptr_resource_handler_->set_defer_request_on_will_start(true);
 442
 443   loader_->StartRequest();
 444   loader_->CancelRequest(true);
 445   static_cast<ResourceController*>(loader_.get())->Resume();
 446 }
 447
 448 // Tests that no invariants are broken if a ResourceHandler cancels during
 449 // OnReadCompleted.
 450 TEST_F(ResourceLoaderTest, CancelOnReadCompleted) {
 451   raw_ptr_resource_handler_->set_cancel_on_read_completed(true);
 452
 453   loader_->StartRequest();
 454   base::RunLoop().RunUntilIdle();
 455
 456   EXPECT_EQ(test_url(), raw_ptr_resource_handler_->start_url());
 457   EXPECT_TRUE(raw_ptr_resource_handler_->received_response_completed());
 458   EXPECT_EQ(net::URLRequestStatus::CANCELED,
 459             raw_ptr_resource_handler_->status().status());
 460 }
 461
 462 // Tests that no invariants are broken if a ResourceHandler defers EOF.
 463 TEST_F(ResourceLoaderTest, DeferEOF) {
 464   raw_ptr_resource_handler_->set_defer_eof(true);
 465
 466   loader_->StartRequest();
 467   base::RunLoop().RunUntilIdle();
 468
 469   EXPECT_EQ(test_url(), raw_ptr_resource_handler_->start_url());
 470   EXPECT_FALSE(raw_ptr_resource_handler_->received_response_completed());
 471
 472   raw_ptr_resource_handler_->Resume();
 473   base::RunLoop().RunUntilIdle();
 474
 475   EXPECT_TRUE(raw_ptr_resource_handler_->received_response_completed());
 476   EXPECT_EQ(net::URLRequestStatus::SUCCESS,
 477             raw_ptr_resource_handler_->status().status());
 478 }
 479
 480 class ResourceLoaderRedirectToFileTest : public ResourceLoaderTest {
 481  public:
 482   ResourceLoaderRedirectToFileTest()
 483       : file_stream_(NULL),
 484         redirect_to_file_resource_handler_(NULL) {
 485   }
 486
 487   base::FilePath temp_path() const { return temp_path_; }
 488   ShareableFileReference* deletable_file() const {
 489     return deletable_file_.get();
 490   }
 491   net::testing::MockFileStream* file_stream() const { return file_stream_; }
 492   RedirectToFileResourceHandler* redirect_to_file_resource_handler() const {
 493     return redirect_to_file_resource_handler_;
 494   }
 495
 496   void ReleaseLoader() {
 497     file_stream_ = NULL;
 498     deletable_file_ = NULL;
 499     loader_.reset();
 500   }
 501
 502   virtual scoped_ptr<ResourceHandler> WrapResourceHandler(
 503       scoped_ptr<ResourceHandlerStub> leaf_handler,
 504       net::URLRequest* request) OVERRIDE {
 505     leaf_handler->set_expect_reads(false);
 506
 507     // Make a temporary file.
 508     CHECK(base::CreateTemporaryFile(&temp_path_));
 509     int flags = base::File::FLAG_WRITE | base::File::FLAG_TEMPORARY |
 510                 base::File::FLAG_CREATE_ALWAYS | base::File::FLAG_ASYNC;
 511     base::File file(temp_path_, flags);
 512     CHECK(file.IsValid());
 513
 514     // Create mock file streams and a ShareableFileReference.
 515     scoped_ptr<net::testing::MockFileStream> file_stream(
 516         new net::testing::MockFileStream(file.Pass(),
 517                                          base::MessageLoopProxy::current()));
 518     file_stream_ = file_stream.get();
 519     deletable_file_ = ShareableFileReference::GetOrCreate(
 520         temp_path_,
 521         ShareableFileReference::DELETE_ON_FINAL_RELEASE,
 522         BrowserThread::GetMessageLoopProxyForThread(
 523             BrowserThread::FILE).get());
 524
 525     // Inject them into the handler.
 526     scoped_ptr<RedirectToFileResourceHandler> handler(
 527         new RedirectToFileResourceHandler(
 528             leaf_handler.PassAs<ResourceHandler>(), request));
 529     redirect_to_file_resource_handler_ = handler.get();
 530     handler->SetCreateTemporaryFileStreamFunctionForTesting(
 531         base::Bind(&ResourceLoaderRedirectToFileTest::PostCallback,
 532                    base::Unretained(this),
 533                    base::Passed(file_stream.PassAs<net::FileStream>())));
 534     return handler.PassAs<ResourceHandler>();
 535   }
 536
 537  private:
 538   void PostCallback(
 539       scoped_ptr<net::FileStream> file_stream,
 540       const CreateTemporaryFileStreamCallback& callback) {
 541     base::MessageLoop::current()->PostTask(
 542         FROM_HERE,
 543         base::Bind(callback, base::File::FILE_OK,
 544                    base::Passed(&file_stream), deletable_file_));
 545   }
 546
 547   base::FilePath temp_path_;
 548   scoped_refptr<ShareableFileReference> deletable_file_;
 549   // These are owned by the ResourceLoader.
 550   net::testing::MockFileStream* file_stream_;
 551   RedirectToFileResourceHandler* redirect_to_file_resource_handler_;
 552 };
 553
 554 // Tests that a RedirectToFileResourceHandler works and forwards everything
 555 // downstream.
 556 TEST_F(ResourceLoaderRedirectToFileTest, Basic) {
 557   // Run it to completion.
 558   loader_->StartRequest();
 559   base::RunLoop().RunUntilIdle();
 560
 561   // Check that the handler forwarded all information to the downstream handler.
 562   EXPECT_EQ(temp_path(),
 563             raw_ptr_resource_handler_->response()->head.download_file_path);
 564   EXPECT_EQ(test_url(), raw_ptr_resource_handler_->start_url());
 565   EXPECT_TRUE(raw_ptr_resource_handler_->received_response_completed());
 566   EXPECT_EQ(net::URLRequestStatus::SUCCESS,
 567             raw_ptr_resource_handler_->status().status());
 568   EXPECT_EQ(test_data().size(), static_cast<size_t>(
 569       raw_ptr_resource_handler_->total_bytes_downloaded()));
 570
 571   // Check that the data was written to the file.
 572   std::string contents;
 573   ASSERT_TRUE(base::ReadFileToString(temp_path(), &contents));
 574   EXPECT_EQ(test_data(), contents);
 575
 576   // Release the loader and the saved reference to file. The file should be gone
 577   // now.
 578   ReleaseLoader();
 579   base::RunLoop().RunUntilIdle();
 580   EXPECT_FALSE(base::PathExists(temp_path()));
 581 }
 582
 583 // Tests that RedirectToFileResourceHandler handles errors in creating the
 584 // temporary file.
 585 TEST_F(ResourceLoaderRedirectToFileTest, CreateTemporaryError) {
 586   // Swap out the create temporary function.
 587   redirect_to_file_resource_handler()->
 588       SetCreateTemporaryFileStreamFunctionForTesting(
 589           base::Bind(&CreateTemporaryError, base::File::FILE_ERROR_FAILED));
 590
 591   // Run it to completion.
 592   loader_->StartRequest();
 593   base::RunLoop().RunUntilIdle();
 594
 595   // To downstream, the request was canceled.
 596   EXPECT_TRUE(raw_ptr_resource_handler_->received_response_completed());
 597   EXPECT_EQ(net::URLRequestStatus::CANCELED,
 598             raw_ptr_resource_handler_->status().status());
 599   EXPECT_EQ(0, raw_ptr_resource_handler_->total_bytes_downloaded());
 600 }
 601
 602 // Tests that RedirectToFileResourceHandler handles synchronous write errors.
 603 TEST_F(ResourceLoaderRedirectToFileTest, WriteError) {
 604   file_stream()->set_forced_error(net::ERR_FAILED);
 605
 606   // Run it to completion.
 607   loader_->StartRequest();
 608   base::RunLoop().RunUntilIdle();
 609
 610   // To downstream, the request was canceled sometime after it started, but
 611   // before any data was written.
 612   EXPECT_EQ(temp_path(),
 613             raw_ptr_resource_handler_->response()->head.download_file_path);
 614   EXPECT_EQ(test_url(), raw_ptr_resource_handler_->start_url());
 615   EXPECT_TRUE(raw_ptr_resource_handler_->received_response_completed());
 616   EXPECT_EQ(net::URLRequestStatus::CANCELED,
 617             raw_ptr_resource_handler_->status().status());
 618   EXPECT_EQ(0, raw_ptr_resource_handler_->total_bytes_downloaded());
 619
 620   // Release the loader. The file should be gone now.
 621   ReleaseLoader();
 622   base::RunLoop().RunUntilIdle();
 623   EXPECT_FALSE(base::PathExists(temp_path()));
 624 }
 625
 626 // Tests that RedirectToFileResourceHandler handles asynchronous write errors.
 627 TEST_F(ResourceLoaderRedirectToFileTest, WriteErrorAsync) {
 628   file_stream()->set_forced_error_async(net::ERR_FAILED);
 629
 630   // Run it to completion.
 631   loader_->StartRequest();
 632   base::RunLoop().RunUntilIdle();
 633
 634   // To downstream, the request was canceled sometime after it started, but
 635   // before any data was written.
 636   EXPECT_EQ(temp_path(),
 637             raw_ptr_resource_handler_->response()->head.download_file_path);
 638   EXPECT_EQ(test_url(), raw_ptr_resource_handler_->start_url());
 639   EXPECT_TRUE(raw_ptr_resource_handler_->received_response_completed());
 640   EXPECT_EQ(net::URLRequestStatus::CANCELED,
 641             raw_ptr_resource_handler_->status().status());
 642   EXPECT_EQ(0, raw_ptr_resource_handler_->total_bytes_downloaded());
 643
 644   // Release the loader. The file should be gone now.
 645   ReleaseLoader();
 646   base::RunLoop().RunUntilIdle();
 647   EXPECT_FALSE(base::PathExists(temp_path()));
 648 }
 649
 650 // Tests that RedirectToFileHandler defers completion if there are outstanding
 651 // writes and accounts for errors which occur in that time.
 652 TEST_F(ResourceLoaderRedirectToFileTest, DeferCompletion) {
 653   // Program the MockFileStream to error asynchronously, but throttle the
 654   // callback.
 655   file_stream()->set_forced_error_async(net::ERR_FAILED);
 656   file_stream()->ThrottleCallbacks();
 657
 658   // Run it as far as it will go.
 659   loader_->StartRequest();
 660   base::RunLoop().RunUntilIdle();
 661
 662   // At this point, the request should have completed.
 663   EXPECT_EQ(net::URLRequestStatus::SUCCESS,
 664             raw_ptr_to_request_->status().status());
 665
 666   // However, the resource loader stack is stuck somewhere after receiving the
 667   // response.
 668   EXPECT_EQ(temp_path(),
 669             raw_ptr_resource_handler_->response()->head.download_file_path);
 670   EXPECT_EQ(test_url(), raw_ptr_resource_handler_->start_url());
 671   EXPECT_FALSE(raw_ptr_resource_handler_->received_response_completed());
 672   EXPECT_EQ(0, raw_ptr_resource_handler_->total_bytes_downloaded());
 673
 674   // Now, release the floodgates.
 675   file_stream()->ReleaseCallbacks();
 676   base::RunLoop().RunUntilIdle();
 677
 678   // Although the URLRequest was successful, the leaf handler sees a failure
 679   // because the write never completed.
 680   EXPECT_TRUE(raw_ptr_resource_handler_->received_response_completed());
 681   EXPECT_EQ(net::URLRequestStatus::CANCELED,
 682             raw_ptr_resource_handler_->status().status());
 683
 684   // Release the loader. The file should be gone now.
 685   ReleaseLoader();
 686   base::RunLoop().RunUntilIdle();
 687   EXPECT_FALSE(base::PathExists(temp_path()));
 688 }
 689
 690 // Tests that a RedirectToFileResourceHandler behaves properly when the
 691 // downstream handler defers OnWillStart.
 692 TEST_F(ResourceLoaderRedirectToFileTest, DownstreamDeferStart) {
 693   // Defer OnWillStart.
 694   raw_ptr_resource_handler_->set_defer_request_on_will_start(true);
 695
 696   // Run as far as we'll go.
 697   loader_->StartRequest();
 698   base::RunLoop().RunUntilIdle();
 699
 700   // The request should have stopped at OnWillStart.
 701   EXPECT_EQ(test_url(), raw_ptr_resource_handler_->start_url());
 702   EXPECT_FALSE(raw_ptr_resource_handler_->response());
 703   EXPECT_FALSE(raw_ptr_resource_handler_->received_response_completed());
 704   EXPECT_EQ(0, raw_ptr_resource_handler_->total_bytes_downloaded());
 705
 706   // Now resume the request. Now we complete.
 707   raw_ptr_resource_handler_->Resume();
 708   base::RunLoop().RunUntilIdle();
 709
 710   // Check that the handler forwarded all information to the downstream handler.
 711   EXPECT_EQ(temp_path(),
 712             raw_ptr_resource_handler_->response()->head.download_file_path);
 713   EXPECT_EQ(test_url(), raw_ptr_resource_handler_->start_url());
 714   EXPECT_TRUE(raw_ptr_resource_handler_->received_response_completed());
 715   EXPECT_EQ(net::URLRequestStatus::SUCCESS,
 716             raw_ptr_resource_handler_->status().status());
 717   EXPECT_EQ(test_data().size(), static_cast<size_t>(
 718       raw_ptr_resource_handler_->total_bytes_downloaded()));
 719
 720   // Check that the data was written to the file.
 721   std::string contents;
 722   ASSERT_TRUE(base::ReadFileToString(temp_path(), &contents));
 723   EXPECT_EQ(test_data(), contents);
 724
 725   // Release the loader. The file should be gone now.
 726   ReleaseLoader();
 727   base::RunLoop().RunUntilIdle();
 728   EXPECT_FALSE(base::PathExists(temp_path()));
 729 }
 730
 731 }  // namespace content