net/base/file_stream_unittest.cc

   1 // Copyright (c) 2012 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 "net/base/file_stream.h"
   6
   7 #include "base/bind.h"
   8 #include "base/callback.h"
   9 #include "base/file_util.h"
  10 #include "base/files/file.h"
  11 #include "base/message_loop/message_loop.h"
  12 #include "base/message_loop/message_loop_proxy.h"
  13 #include "base/path_service.h"
  14 #include "base/run_loop.h"
  15 #include "base/strings/string_util.h"
  16 #include "base/synchronization/waitable_event.h"
  17 #include "base/test/test_timeouts.h"
  18 #include "base/threading/sequenced_worker_pool.h"
  19 #include "base/threading/thread_restrictions.h"
  20 #include "net/base/capturing_net_log.h"
  21 #include "net/base/io_buffer.h"
  22 #include "net/base/net_errors.h"
  23 #include "net/base/test_completion_callback.h"
  24 #include "testing/gtest/include/gtest/gtest.h"
  25 #include "testing/platform_test.h"
  26
  27 #if defined(OS_ANDROID)
  28 #include "base/test/test_file_util.h"
  29 #endif
  30
  31 namespace net {
  32
  33 namespace {
  34
  35 const char kTestData[] = "0123456789";
  36 const int kTestDataSize = arraysize(kTestData) - 1;
  37
  38 // Creates an IOBufferWithSize that contains the kTestDataSize.
  39 IOBufferWithSize* CreateTestDataBuffer() {
  40   IOBufferWithSize* buf = new IOBufferWithSize(kTestDataSize);
  41   memcpy(buf->data(), kTestData, kTestDataSize);
  42   return buf;
  43 }
  44
  45 }  // namespace
  46
  47 class FileStreamTest : public PlatformTest {
  48  public:
  49   virtual void SetUp() {
  50     PlatformTest::SetUp();
  51
  52     base::CreateTemporaryFile(&temp_file_path_);
  53     base::WriteFile(temp_file_path_, kTestData, kTestDataSize);
  54   }
  55   virtual void TearDown() {
  56     // FileStreamContexts must be asynchronously closed on the file task runner
  57     // before they can be deleted. Pump the RunLoop to avoid leaks.
  58     base::RunLoop().RunUntilIdle();
  59     EXPECT_TRUE(base::DeleteFile(temp_file_path_, false));
  60
  61     PlatformTest::TearDown();
  62   }
  63
  64   const base::FilePath temp_file_path() const { return temp_file_path_; }
  65
  66  private:
  67   base::FilePath temp_file_path_;
  68 };
  69
  70 namespace {
  71
  72 TEST_F(FileStreamTest, OpenExplicitClose) {
  73   TestCompletionCallback callback;
  74   FileStream stream(base::MessageLoopProxy::current());
  75   int flags = base::File::FLAG_OPEN |
  76               base::File::FLAG_READ |
  77               base::File::FLAG_ASYNC;
  78   int rv = stream.Open(temp_file_path(), flags, callback.callback());
  79   EXPECT_EQ(ERR_IO_PENDING, rv);
  80   EXPECT_EQ(OK, callback.WaitForResult());
  81   EXPECT_TRUE(stream.IsOpen());
  82   EXPECT_TRUE(stream.GetFileForTesting().IsValid());
  83   EXPECT_EQ(ERR_IO_PENDING, stream.Close(callback.callback()));
  84   EXPECT_EQ(OK, callback.WaitForResult());
  85   EXPECT_FALSE(stream.IsOpen());
  86   EXPECT_FALSE(stream.GetFileForTesting().IsValid());
  87 }
  88
  89 TEST_F(FileStreamTest, OpenExplicitCloseOrphaned) {
  90   TestCompletionCallback callback;
  91   scoped_ptr<FileStream> stream(new FileStream(
  92       base::MessageLoopProxy::current()));
  93   int flags = base::File::FLAG_OPEN | base::File::FLAG_READ |
  94               base::File::FLAG_ASYNC;
  95   int rv = stream->Open(temp_file_path(), flags, callback.callback());
  96   EXPECT_EQ(ERR_IO_PENDING, rv);
  97   EXPECT_EQ(OK, callback.WaitForResult());
  98   EXPECT_TRUE(stream->IsOpen());
  99   EXPECT_TRUE(stream->GetFileForTesting().IsValid());
 100   EXPECT_EQ(ERR_IO_PENDING, stream->Close(callback.callback()));
 101   stream.reset();
 102   // File isn't actually closed yet.
 103   base::RunLoop runloop;
 104   runloop.RunUntilIdle();
 105   // The file should now be closed, though the callback has not been called.
 106 }
 107
 108 // Test the use of FileStream with a file handle provided at construction.
 109 TEST_F(FileStreamTest, UseFileHandle) {
 110   int rv = 0;
 111   TestCompletionCallback callback;
 112   TestInt64CompletionCallback callback64;
 113   // 1. Test reading with a file handle.
 114   ASSERT_EQ(kTestDataSize,
 115             base::WriteFile(temp_file_path(), kTestData, kTestDataSize));
 116   int flags = base::File::FLAG_OPEN_ALWAYS | base::File::FLAG_READ |
 117               base::File::FLAG_ASYNC;
 118   base::File file(temp_file_path(), flags);
 119
 120   // Seek to the beginning of the file and read.
 121   scoped_ptr<FileStream> read_stream(
 122       new FileStream(file.Pass(), base::MessageLoopProxy::current()));
 123   ASSERT_EQ(ERR_IO_PENDING,
 124             read_stream->Seek(base::File::FROM_BEGIN, 0,
 125                               callback64.callback()));
 126   ASSERT_EQ(0, callback64.WaitForResult());
 127   // Read into buffer and compare.
 128   scoped_refptr<IOBufferWithSize> read_buffer =
 129       new IOBufferWithSize(kTestDataSize);
 130   rv = read_stream->Read(read_buffer.get(), kTestDataSize, callback.callback());
 131   ASSERT_EQ(kTestDataSize, callback.GetResult(rv));
 132   ASSERT_EQ(0, memcmp(kTestData, read_buffer->data(), kTestDataSize));
 133   read_stream.reset();
 134
 135   // 2. Test writing with a file handle.
 136   base::DeleteFile(temp_file_path(), false);
 137   flags = base::File::FLAG_OPEN_ALWAYS | base::File::FLAG_WRITE |
 138           base::File::FLAG_ASYNC;
 139   file.Initialize(temp_file_path(), flags);
 140
 141   scoped_ptr<FileStream> write_stream(
 142       new FileStream(file.Pass(), base::MessageLoopProxy::current()));
 143   ASSERT_EQ(ERR_IO_PENDING,
 144             write_stream->Seek(base::File::FROM_BEGIN, 0,
 145                                callback64.callback()));
 146   ASSERT_EQ(0, callback64.WaitForResult());
 147   scoped_refptr<IOBufferWithSize> write_buffer = CreateTestDataBuffer();
 148   rv = write_stream->Write(write_buffer.get(), kTestDataSize,
 149                            callback.callback());
 150   ASSERT_EQ(kTestDataSize, callback.GetResult(rv));
 151   write_stream.reset();
 152
 153   // Read into buffer and compare to make sure the handle worked fine.
 154   ASSERT_EQ(kTestDataSize,
 155             base::ReadFile(temp_file_path(), read_buffer->data(),
 156                            kTestDataSize));
 157   ASSERT_EQ(0, memcmp(kTestData, read_buffer->data(), kTestDataSize));
 158 }
 159
 160 TEST_F(FileStreamTest, UseClosedStream) {
 161   int rv = 0;
 162   TestCompletionCallback callback;
 163   TestInt64CompletionCallback callback64;
 164
 165   FileStream stream(base::MessageLoopProxy::current());
 166
 167   EXPECT_FALSE(stream.IsOpen());
 168
 169   // Try seeking...
 170   rv = stream.Seek(base::File::FROM_BEGIN, 5, callback64.callback());
 171   EXPECT_EQ(ERR_UNEXPECTED, callback64.GetResult(rv));
 172
 173   // Try reading...
 174   scoped_refptr<IOBufferWithSize> buf = new IOBufferWithSize(10);
 175   rv = stream.Read(buf, buf->size(), callback.callback());
 176   EXPECT_EQ(ERR_UNEXPECTED, callback.GetResult(rv));
 177 }
 178
 179 TEST_F(FileStreamTest, Read) {
 180   int64 file_size;
 181   EXPECT_TRUE(base::GetFileSize(temp_file_path(), &file_size));
 182
 183   FileStream stream(base::MessageLoopProxy::current());
 184   int flags = base::File::FLAG_OPEN | base::File::FLAG_READ |
 185               base::File::FLAG_ASYNC;
 186   TestCompletionCallback callback;
 187   int rv = stream.Open(temp_file_path(), flags, callback.callback());
 188   EXPECT_EQ(OK, callback.GetResult(rv));
 189
 190   int total_bytes_read = 0;
 191
 192   std::string data_read;
 193   for (;;) {
 194     scoped_refptr<IOBufferWithSize> buf = new IOBufferWithSize(4);
 195     rv = stream.Read(buf.get(), buf->size(), callback.callback());
 196     rv = callback.GetResult(rv);
 197     EXPECT_LE(0, rv);
 198     if (rv <= 0)
 199       break;
 200     total_bytes_read += rv;
 201     data_read.append(buf->data(), rv);
 202   }
 203   EXPECT_EQ(file_size, total_bytes_read);
 204   EXPECT_EQ(kTestData, data_read);
 205 }
 206
 207 TEST_F(FileStreamTest, Read_EarlyDelete) {
 208   int64 file_size;
 209   EXPECT_TRUE(base::GetFileSize(temp_file_path(), &file_size));
 210
 211   scoped_ptr<FileStream> stream(
 212       new FileStream(base::MessageLoopProxy::current()));
 213   int flags = base::File::FLAG_OPEN | base::File::FLAG_READ |
 214               base::File::FLAG_ASYNC;
 215   TestCompletionCallback callback;
 216   int rv = stream->Open(temp_file_path(), flags, callback.callback());
 217   EXPECT_EQ(ERR_IO_PENDING, rv);
 218   EXPECT_EQ(OK, callback.WaitForResult());
 219
 220   scoped_refptr<IOBufferWithSize> buf = new IOBufferWithSize(4);
 221   rv = stream->Read(buf.get(), buf->size(), callback.callback());
 222   stream.reset();  // Delete instead of closing it.
 223   if (rv < 0) {
 224     EXPECT_EQ(ERR_IO_PENDING, rv);
 225     // The callback should not be called if the request is cancelled.
 226     base::RunLoop().RunUntilIdle();
 227     EXPECT_FALSE(callback.have_result());
 228   } else {
 229     EXPECT_EQ(std::string(kTestData, rv), std::string(buf->data(), rv));
 230   }
 231 }
 232
 233 TEST_F(FileStreamTest, Read_FromOffset) {
 234   int64 file_size;
 235   EXPECT_TRUE(base::GetFileSize(temp_file_path(), &file_size));
 236
 237   FileStream stream(base::MessageLoopProxy::current());
 238   int flags = base::File::FLAG_OPEN | base::File::FLAG_READ |
 239               base::File::FLAG_ASYNC;
 240   TestCompletionCallback callback;
 241   int rv = stream.Open(temp_file_path(), flags, callback.callback());
 242   EXPECT_EQ(ERR_IO_PENDING, rv);
 243   EXPECT_EQ(OK, callback.WaitForResult());
 244
 245   TestInt64CompletionCallback callback64;
 246   const int64 kOffset = 3;
 247   rv = stream.Seek(base::File::FROM_BEGIN, kOffset, callback64.callback());
 248   ASSERT_EQ(ERR_IO_PENDING, rv);
 249   int64 new_offset = callback64.WaitForResult();
 250   EXPECT_EQ(kOffset, new_offset);
 251
 252   int total_bytes_read = 0;
 253
 254   std::string data_read;
 255   for (;;) {
 256     scoped_refptr<IOBufferWithSize> buf = new IOBufferWithSize(4);
 257     rv = stream.Read(buf.get(), buf->size(), callback.callback());
 258     if (rv == ERR_IO_PENDING)
 259       rv = callback.WaitForResult();
 260     EXPECT_LE(0, rv);
 261     if (rv <= 0)
 262       break;
 263     total_bytes_read += rv;
 264     data_read.append(buf->data(), rv);
 265   }
 266   EXPECT_EQ(file_size - kOffset, total_bytes_read);
 267   EXPECT_EQ(kTestData + kOffset, data_read);
 268 }
 269
 270 TEST_F(FileStreamTest, SeekAround) {
 271   FileStream stream(base::MessageLoopProxy::current());
 272   int flags = base::File::FLAG_OPEN | base::File::FLAG_ASYNC |
 273               base::File::FLAG_READ;
 274   TestCompletionCallback callback;
 275   int rv = stream.Open(temp_file_path(), flags, callback.callback());
 276   EXPECT_EQ(ERR_IO_PENDING, rv);
 277   EXPECT_EQ(OK, callback.WaitForResult());
 278
 279   TestInt64CompletionCallback callback64;
 280
 281   const int64 kOffset = 3;
 282   rv = stream.Seek(base::File::FROM_BEGIN, kOffset, callback64.callback());
 283   ASSERT_EQ(ERR_IO_PENDING, rv);
 284   int64 new_offset = callback64.WaitForResult();
 285   EXPECT_EQ(kOffset, new_offset);
 286
 287   rv = stream.Seek(base::File::FROM_CURRENT, kOffset, callback64.callback());
 288   ASSERT_EQ(ERR_IO_PENDING, rv);
 289   new_offset = callback64.WaitForResult();
 290   EXPECT_EQ(2 * kOffset, new_offset);
 291
 292   rv = stream.Seek(base::File::FROM_CURRENT, -kOffset, callback64.callback());
 293   ASSERT_EQ(ERR_IO_PENDING, rv);
 294   new_offset = callback64.WaitForResult();
 295   EXPECT_EQ(kOffset, new_offset);
 296
 297   const int kTestDataLen = arraysize(kTestData) - 1;
 298
 299   rv = stream.Seek(base::File::FROM_END, -kTestDataLen, callback64.callback());
 300   ASSERT_EQ(ERR_IO_PENDING, rv);
 301   new_offset = callback64.WaitForResult();
 302   EXPECT_EQ(0, new_offset);
 303 }
 304
 305 TEST_F(FileStreamTest, Write) {
 306   FileStream stream(base::MessageLoopProxy::current());
 307   int flags = base::File::FLAG_CREATE_ALWAYS | base::File::FLAG_WRITE |
 308               base::File::FLAG_ASYNC;
 309   TestCompletionCallback callback;
 310   int rv = stream.Open(temp_file_path(), flags, callback.callback());
 311   EXPECT_EQ(OK, callback.GetResult(rv));
 312
 313   int64 file_size;
 314   EXPECT_TRUE(base::GetFileSize(temp_file_path(), &file_size));
 315   EXPECT_EQ(0, file_size);
 316
 317   scoped_refptr<IOBuffer> buf = CreateTestDataBuffer();
 318   rv = stream.Write(buf.get(), kTestDataSize, callback.callback());
 319   rv = callback.GetResult(rv);
 320   EXPECT_EQ(kTestDataSize, rv);
 321
 322   EXPECT_TRUE(base::GetFileSize(temp_file_path(), &file_size));
 323   EXPECT_EQ(kTestDataSize, file_size);
 324
 325   std::string data_read;
 326   EXPECT_TRUE(base::ReadFileToString(temp_file_path(), &data_read));
 327   EXPECT_EQ(kTestData, data_read);
 328 }
 329
 330 TEST_F(FileStreamTest, Write_EarlyDelete) {
 331   scoped_ptr<FileStream> stream(
 332       new FileStream(base::MessageLoopProxy::current()));
 333   int flags = base::File::FLAG_CREATE_ALWAYS | base::File::FLAG_WRITE |
 334               base::File::FLAG_ASYNC;
 335   TestCompletionCallback callback;
 336   int rv = stream->Open(temp_file_path(), flags, callback.callback());
 337   EXPECT_EQ(ERR_IO_PENDING, rv);
 338   EXPECT_EQ(OK, callback.WaitForResult());
 339
 340   int64 file_size;
 341   EXPECT_TRUE(base::GetFileSize(temp_file_path(), &file_size));
 342   EXPECT_EQ(0, file_size);
 343
 344   scoped_refptr<IOBufferWithSize> buf = CreateTestDataBuffer();
 345   rv = stream->Write(buf.get(), buf->size(), callback.callback());
 346   stream.reset();
 347   if (rv < 0) {
 348     EXPECT_EQ(ERR_IO_PENDING, rv);
 349     // The callback should not be called if the request is cancelled.
 350     base::RunLoop().RunUntilIdle();
 351     EXPECT_FALSE(callback.have_result());
 352   } else {
 353     EXPECT_TRUE(base::GetFileSize(temp_file_path(), &file_size));
 354     EXPECT_EQ(file_size, rv);
 355   }
 356 }
 357
 358 TEST_F(FileStreamTest, Write_FromOffset) {
 359   int64 file_size;
 360   EXPECT_TRUE(base::GetFileSize(temp_file_path(), &file_size));
 361
 362   FileStream stream(base::MessageLoopProxy::current());
 363   int flags = base::File::FLAG_OPEN | base::File::FLAG_WRITE |
 364               base::File::FLAG_ASYNC;
 365   TestCompletionCallback callback;
 366   int rv = stream.Open(temp_file_path(), flags, callback.callback());
 367   EXPECT_EQ(ERR_IO_PENDING, rv);
 368   EXPECT_EQ(OK, callback.WaitForResult());
 369
 370   TestInt64CompletionCallback callback64;
 371   const int64 kOffset = 0;
 372   rv = stream.Seek(base::File::FROM_END, kOffset, callback64.callback());
 373   ASSERT_EQ(ERR_IO_PENDING, rv);
 374   int64 new_offset = callback64.WaitForResult();
 375   EXPECT_EQ(kTestDataSize, new_offset);
 376
 377   int total_bytes_written = 0;
 378
 379   scoped_refptr<IOBufferWithSize> buf = CreateTestDataBuffer();
 380   scoped_refptr<DrainableIOBuffer> drainable =
 381       new DrainableIOBuffer(buf.get(), buf->size());
 382   while (total_bytes_written != kTestDataSize) {
 383     rv = stream.Write(drainable.get(), drainable->BytesRemaining(),
 384                       callback.callback());
 385     if (rv == ERR_IO_PENDING)
 386       rv = callback.WaitForResult();
 387     EXPECT_LT(0, rv);
 388     if (rv <= 0)
 389       break;
 390     drainable->DidConsume(rv);
 391     total_bytes_written += rv;
 392   }
 393   EXPECT_TRUE(base::GetFileSize(temp_file_path(), &file_size));
 394   EXPECT_EQ(file_size, kTestDataSize * 2);
 395 }
 396
 397 TEST_F(FileStreamTest, BasicReadWrite) {
 398   int64 file_size;
 399   EXPECT_TRUE(base::GetFileSize(temp_file_path(), &file_size));
 400
 401   scoped_ptr<FileStream> stream(
 402       new FileStream(base::MessageLoopProxy::current()));
 403   int flags = base::File::FLAG_OPEN | base::File::FLAG_READ |
 404               base::File::FLAG_WRITE | base::File::FLAG_ASYNC;
 405   TestCompletionCallback callback;
 406   int rv = stream->Open(temp_file_path(), flags, callback.callback());
 407   EXPECT_EQ(ERR_IO_PENDING, rv);
 408   EXPECT_EQ(OK, callback.WaitForResult());
 409
 410   int64 total_bytes_read = 0;
 411
 412   std::string data_read;
 413   for (;;) {
 414     scoped_refptr<IOBufferWithSize> buf = new IOBufferWithSize(4);
 415     rv = stream->Read(buf.get(), buf->size(), callback.callback());
 416     if (rv == ERR_IO_PENDING)
 417       rv = callback.WaitForResult();
 418     EXPECT_LE(0, rv);
 419     if (rv <= 0)
 420       break;
 421     total_bytes_read += rv;
 422     data_read.append(buf->data(), rv);
 423   }
 424   EXPECT_EQ(file_size, total_bytes_read);
 425   EXPECT_TRUE(data_read == kTestData);
 426
 427   int total_bytes_written = 0;
 428
 429   scoped_refptr<IOBufferWithSize> buf = CreateTestDataBuffer();
 430   scoped_refptr<DrainableIOBuffer> drainable =
 431       new DrainableIOBuffer(buf.get(), buf->size());
 432   while (total_bytes_written != kTestDataSize) {
 433     rv = stream->Write(drainable.get(), drainable->BytesRemaining(),
 434                        callback.callback());
 435     if (rv == ERR_IO_PENDING)
 436       rv = callback.WaitForResult();
 437     EXPECT_LT(0, rv);
 438     if (rv <= 0)
 439       break;
 440     drainable->DidConsume(rv);
 441     total_bytes_written += rv;
 442   }
 443
 444   stream.reset();
 445
 446   EXPECT_TRUE(base::GetFileSize(temp_file_path(), &file_size));
 447   EXPECT_EQ(kTestDataSize * 2, file_size);
 448 }
 449
 450 TEST_F(FileStreamTest, BasicWriteRead) {
 451   int64 file_size;
 452   EXPECT_TRUE(base::GetFileSize(temp_file_path(), &file_size));
 453
 454   scoped_ptr<FileStream> stream(
 455       new FileStream(base::MessageLoopProxy::current()));
 456   int flags = base::File::FLAG_OPEN | base::File::FLAG_READ |
 457               base::File::FLAG_WRITE | base::File::FLAG_ASYNC;
 458   TestCompletionCallback callback;
 459   int rv = stream->Open(temp_file_path(), flags, callback.callback());
 460   EXPECT_EQ(ERR_IO_PENDING, rv);
 461   EXPECT_EQ(OK, callback.WaitForResult());
 462
 463   TestInt64CompletionCallback callback64;
 464   rv = stream->Seek(base::File::FROM_END, 0, callback64.callback());
 465   ASSERT_EQ(ERR_IO_PENDING, rv);
 466   int64 offset = callback64.WaitForResult();
 467   EXPECT_EQ(offset, file_size);
 468
 469   int total_bytes_written = 0;
 470
 471   scoped_refptr<IOBufferWithSize> buf = CreateTestDataBuffer();
 472   scoped_refptr<DrainableIOBuffer> drainable =
 473       new DrainableIOBuffer(buf.get(), buf->size());
 474   while (total_bytes_written != kTestDataSize) {
 475     rv = stream->Write(drainable.get(), drainable->BytesRemaining(),
 476                        callback.callback());
 477     if (rv == ERR_IO_PENDING)
 478       rv = callback.WaitForResult();
 479     EXPECT_LT(0, rv);
 480     if (rv <= 0)
 481       break;
 482     drainable->DidConsume(rv);
 483     total_bytes_written += rv;
 484   }
 485
 486   EXPECT_EQ(kTestDataSize, total_bytes_written);
 487
 488   rv = stream->Seek(base::File::FROM_BEGIN, 0, callback64.callback());
 489   ASSERT_EQ(ERR_IO_PENDING, rv);
 490   offset = callback64.WaitForResult();
 491   EXPECT_EQ(0, offset);
 492
 493   int total_bytes_read = 0;
 494
 495   std::string data_read;
 496   for (;;) {
 497     scoped_refptr<IOBufferWithSize> buf = new IOBufferWithSize(4);
 498     rv = stream->Read(buf.get(), buf->size(), callback.callback());
 499     if (rv == ERR_IO_PENDING)
 500       rv = callback.WaitForResult();
 501     EXPECT_LE(0, rv);
 502     if (rv <= 0)
 503       break;
 504     total_bytes_read += rv;
 505     data_read.append(buf->data(), rv);
 506   }
 507   stream.reset();
 508
 509   EXPECT_TRUE(base::GetFileSize(temp_file_path(), &file_size));
 510   EXPECT_EQ(kTestDataSize * 2, file_size);
 511
 512   EXPECT_EQ(kTestDataSize * 2, total_bytes_read);
 513   const std::string kExpectedFileData =
 514       std::string(kTestData) + std::string(kTestData);
 515   EXPECT_EQ(kExpectedFileData, data_read);
 516 }
 517
 518 class TestWriteReadCompletionCallback {
 519  public:
 520   TestWriteReadCompletionCallback(FileStream* stream,
 521                                   int* total_bytes_written,
 522                                   int* total_bytes_read,
 523                                   std::string* data_read)
 524       : result_(0),
 525         have_result_(false),
 526         waiting_for_result_(false),
 527         stream_(stream),
 528         total_bytes_written_(total_bytes_written),
 529         total_bytes_read_(total_bytes_read),
 530         data_read_(data_read),
 531         callback_(base::Bind(&TestWriteReadCompletionCallback::OnComplete,
 532                              base::Unretained(this))),
 533         test_data_(CreateTestDataBuffer()),
 534         drainable_(new DrainableIOBuffer(test_data_.get(), kTestDataSize)) {}
 535
 536   int WaitForResult() {
 537     DCHECK(!waiting_for_result_);
 538     while (!have_result_) {
 539       waiting_for_result_ = true;
 540       base::RunLoop().Run();
 541       waiting_for_result_ = false;
 542     }
 543     have_result_ = false;  // auto-reset for next callback
 544     return result_;
 545   }
 546
 547   const CompletionCallback& callback() const { return callback_; }
 548
 549  private:
 550   void OnComplete(int result) {
 551     DCHECK_LT(0, result);
 552     *total_bytes_written_ += result;
 553
 554     int rv;
 555
 556     if (*total_bytes_written_ != kTestDataSize) {
 557       // Recurse to finish writing all data.
 558       int total_bytes_written = 0, total_bytes_read = 0;
 559       std::string data_read;
 560       TestWriteReadCompletionCallback callback(
 561           stream_, &total_bytes_written, &total_bytes_read, &data_read);
 562       rv = stream_->Write(
 563           drainable_.get(), drainable_->BytesRemaining(), callback.callback());
 564       DCHECK_EQ(ERR_IO_PENDING, rv);
 565       rv = callback.WaitForResult();
 566       drainable_->DidConsume(total_bytes_written);
 567       *total_bytes_written_ += total_bytes_written;
 568       *total_bytes_read_ += total_bytes_read;
 569       *data_read_ += data_read;
 570     } else {  // We're done writing all data.  Start reading the data.
 571       TestInt64CompletionCallback callback64;
 572       EXPECT_EQ(ERR_IO_PENDING,
 573                 stream_->Seek(base::File::FROM_BEGIN, 0,
 574                               callback64.callback()));
 575       {
 576         base::MessageLoop::ScopedNestableTaskAllower allow(
 577             base::MessageLoop::current());
 578         EXPECT_LE(0, callback64.WaitForResult());
 579       }
 580
 581       TestCompletionCallback callback;
 582       for (;;) {
 583         scoped_refptr<IOBufferWithSize> buf = new IOBufferWithSize(4);
 584         rv = stream_->Read(buf.get(), buf->size(), callback.callback());
 585         if (rv == ERR_IO_PENDING) {
 586           base::MessageLoop::ScopedNestableTaskAllower allow(
 587               base::MessageLoop::current());
 588           rv = callback.WaitForResult();
 589         }
 590         EXPECT_LE(0, rv);
 591         if (rv <= 0)
 592           break;
 593         *total_bytes_read_ += rv;
 594         data_read_->append(buf->data(), rv);
 595       }
 596     }
 597
 598     result_ = *total_bytes_written_;
 599     have_result_ = true;
 600     if (waiting_for_result_)
 601       base::MessageLoop::current()->Quit();
 602   }
 603
 604   int result_;
 605   bool have_result_;
 606   bool waiting_for_result_;
 607   FileStream* stream_;
 608   int* total_bytes_written_;
 609   int* total_bytes_read_;
 610   std::string* data_read_;
 611   const CompletionCallback callback_;
 612   scoped_refptr<IOBufferWithSize> test_data_;
 613   scoped_refptr<DrainableIOBuffer> drainable_;
 614
 615   DISALLOW_COPY_AND_ASSIGN(TestWriteReadCompletionCallback);
 616 };
 617
 618 TEST_F(FileStreamTest, WriteRead) {
 619   int64 file_size;
 620   EXPECT_TRUE(base::GetFileSize(temp_file_path(), &file_size));
 621
 622   scoped_ptr<FileStream> stream(
 623       new FileStream(base::MessageLoopProxy::current()));
 624   int flags = base::File::FLAG_OPEN | base::File::FLAG_READ |
 625               base::File::FLAG_WRITE | base::File::FLAG_ASYNC;
 626   TestCompletionCallback open_callback;
 627   int rv = stream->Open(temp_file_path(), flags, open_callback.callback());
 628   EXPECT_EQ(ERR_IO_PENDING, rv);
 629   EXPECT_EQ(OK, open_callback.WaitForResult());
 630
 631   TestInt64CompletionCallback callback64;
 632   EXPECT_EQ(ERR_IO_PENDING,
 633             stream->Seek(base::File::FROM_END, 0, callback64.callback()));
 634   EXPECT_EQ(file_size, callback64.WaitForResult());
 635
 636   int total_bytes_written = 0;
 637   int total_bytes_read = 0;
 638   std::string data_read;
 639   TestWriteReadCompletionCallback callback(stream.get(), &total_bytes_written,
 640                                            &total_bytes_read, &data_read);
 641
 642   scoped_refptr<IOBufferWithSize> buf = CreateTestDataBuffer();
 643   rv = stream->Write(buf.get(), buf->size(), callback.callback());
 644   if (rv == ERR_IO_PENDING)
 645     rv = callback.WaitForResult();
 646   EXPECT_LT(0, rv);
 647   EXPECT_EQ(kTestDataSize, total_bytes_written);
 648
 649   stream.reset();
 650
 651   EXPECT_TRUE(base::GetFileSize(temp_file_path(), &file_size));
 652   EXPECT_EQ(kTestDataSize * 2, file_size);
 653
 654   EXPECT_EQ(kTestDataSize * 2, total_bytes_read);
 655   const std::string kExpectedFileData =
 656       std::string(kTestData) + std::string(kTestData);
 657   EXPECT_EQ(kExpectedFileData, data_read);
 658 }
 659
 660 class TestWriteCloseCompletionCallback {
 661  public:
 662   TestWriteCloseCompletionCallback(FileStream* stream, int* total_bytes_written)
 663       : result_(0),
 664         have_result_(false),
 665         waiting_for_result_(false),
 666         stream_(stream),
 667         total_bytes_written_(total_bytes_written),
 668         callback_(base::Bind(&TestWriteCloseCompletionCallback::OnComplete,
 669                              base::Unretained(this))),
 670         test_data_(CreateTestDataBuffer()),
 671         drainable_(new DrainableIOBuffer(test_data_.get(), kTestDataSize)) {}
 672
 673   int WaitForResult() {
 674     DCHECK(!waiting_for_result_);
 675     while (!have_result_) {
 676       waiting_for_result_ = true;
 677       base::RunLoop().Run();
 678       waiting_for_result_ = false;
 679     }
 680     have_result_ = false;  // auto-reset for next callback
 681     return result_;
 682   }
 683
 684   const CompletionCallback& callback() const { return callback_; }
 685
 686  private:
 687   void OnComplete(int result) {
 688     DCHECK_LT(0, result);
 689     *total_bytes_written_ += result;
 690
 691     int rv;
 692
 693     if (*total_bytes_written_ != kTestDataSize) {
 694       // Recurse to finish writing all data.
 695       int total_bytes_written = 0;
 696       TestWriteCloseCompletionCallback callback(stream_, &total_bytes_written);
 697       rv = stream_->Write(
 698           drainable_.get(), drainable_->BytesRemaining(), callback.callback());
 699       DCHECK_EQ(ERR_IO_PENDING, rv);
 700       rv = callback.WaitForResult();
 701       drainable_->DidConsume(total_bytes_written);
 702       *total_bytes_written_ += total_bytes_written;
 703     }
 704
 705     result_ = *total_bytes_written_;
 706     have_result_ = true;
 707     if (waiting_for_result_)
 708       base::MessageLoop::current()->Quit();
 709   }
 710
 711   int result_;
 712   bool have_result_;
 713   bool waiting_for_result_;
 714   FileStream* stream_;
 715   int* total_bytes_written_;
 716   const CompletionCallback callback_;
 717   scoped_refptr<IOBufferWithSize> test_data_;
 718   scoped_refptr<DrainableIOBuffer> drainable_;
 719
 720   DISALLOW_COPY_AND_ASSIGN(TestWriteCloseCompletionCallback);
 721 };
 722
 723 TEST_F(FileStreamTest, WriteClose) {
 724   int64 file_size;
 725   EXPECT_TRUE(base::GetFileSize(temp_file_path(), &file_size));
 726
 727   scoped_ptr<FileStream> stream(
 728       new FileStream(base::MessageLoopProxy::current()));
 729   int flags = base::File::FLAG_OPEN | base::File::FLAG_READ |
 730               base::File::FLAG_WRITE | base::File::FLAG_ASYNC;
 731   TestCompletionCallback open_callback;
 732   int rv = stream->Open(temp_file_path(), flags, open_callback.callback());
 733   EXPECT_EQ(ERR_IO_PENDING, rv);
 734   EXPECT_EQ(OK, open_callback.WaitForResult());
 735
 736   TestInt64CompletionCallback callback64;
 737   EXPECT_EQ(ERR_IO_PENDING,
 738             stream->Seek(base::File::FROM_END, 0, callback64.callback()));
 739   EXPECT_EQ(file_size, callback64.WaitForResult());
 740
 741   int total_bytes_written = 0;
 742   TestWriteCloseCompletionCallback callback(stream.get(), &total_bytes_written);
 743
 744   scoped_refptr<IOBufferWithSize> buf = CreateTestDataBuffer();
 745   rv = stream->Write(buf.get(), buf->size(), callback.callback());
 746   if (rv == ERR_IO_PENDING)
 747     total_bytes_written = callback.WaitForResult();
 748   EXPECT_LT(0, total_bytes_written);
 749   EXPECT_EQ(kTestDataSize, total_bytes_written);
 750
 751   stream.reset();
 752
 753   EXPECT_TRUE(base::GetFileSize(temp_file_path(), &file_size));
 754   EXPECT_EQ(kTestDataSize * 2, file_size);
 755 }
 756
 757 TEST_F(FileStreamTest, OpenAndDelete) {
 758   scoped_refptr<base::SequencedWorkerPool> pool(
 759       new base::SequencedWorkerPool(1, "StreamTest"));
 760
 761   bool prev = base::ThreadRestrictions::SetIOAllowed(false);
 762   scoped_ptr<FileStream> stream(new FileStream(pool.get()));
 763   int flags = base::File::FLAG_OPEN | base::File::FLAG_WRITE |
 764               base::File::FLAG_ASYNC;
 765   TestCompletionCallback open_callback;
 766   int rv = stream->Open(temp_file_path(), flags, open_callback.callback());
 767   EXPECT_EQ(ERR_IO_PENDING, rv);
 768
 769   // Delete the stream without waiting for the open operation to be
 770   // complete. Should be safe.
 771   stream.reset();
 772
 773   // Force an operation through the pool.
 774   scoped_ptr<FileStream> stream2(new FileStream(pool.get()));
 775   TestCompletionCallback open_callback2;
 776   rv = stream2->Open(temp_file_path(), flags, open_callback2.callback());
 777   EXPECT_EQ(OK, open_callback2.GetResult(rv));
 778   stream2.reset();
 779
 780   pool->Shutdown();
 781
 782   // open_callback won't be called.
 783   base::RunLoop().RunUntilIdle();
 784   EXPECT_FALSE(open_callback.have_result());
 785   base::ThreadRestrictions::SetIOAllowed(prev);
 786 }
 787
 788 // Verify that Write() errors are mapped correctly.
 789 TEST_F(FileStreamTest, WriteError) {
 790   // Try opening file as read-only and then writing to it using FileStream.
 791   uint32 flags = base::File::FLAG_OPEN | base::File::FLAG_READ |
 792                  base::File::FLAG_ASYNC;
 793
 794   base::File file(temp_file_path(), flags);
 795   ASSERT_TRUE(file.IsValid());
 796
 797   scoped_ptr<FileStream> stream(
 798   new FileStream(file.Pass(), base::MessageLoopProxy::current()));
 799
 800   scoped_refptr<IOBuffer> buf = new IOBuffer(1);
 801   buf->data()[0] = 0;
 802
 803   TestCompletionCallback callback;
 804   int rv = stream->Write(buf.get(), 1, callback.callback());
 805   if (rv == ERR_IO_PENDING)
 806     rv = callback.WaitForResult();
 807   EXPECT_LT(rv, 0);
 808
 809   stream.reset();
 810   base::RunLoop().RunUntilIdle();
 811 }
 812
 813 // Verify that Read() errors are mapped correctly.
 814 TEST_F(FileStreamTest, ReadError) {
 815   // Try opening file for write and then reading from it using FileStream.
 816   uint32 flags = base::File::FLAG_OPEN | base::File::FLAG_WRITE |
 817                  base::File::FLAG_ASYNC;
 818
 819   base::File file(temp_file_path(), flags);
 820   ASSERT_TRUE(file.IsValid());
 821
 822   scoped_ptr<FileStream> stream(
 823   new FileStream(file.Pass(), base::MessageLoopProxy::current()));
 824
 825   scoped_refptr<IOBuffer> buf = new IOBuffer(1);
 826   TestCompletionCallback callback;
 827   int rv = stream->Read(buf.get(), 1, callback.callback());
 828   if (rv == ERR_IO_PENDING)
 829     rv = callback.WaitForResult();
 830   EXPECT_LT(rv, 0);
 831
 832   stream.reset();
 833   base::RunLoop().RunUntilIdle();
 834 }
 835
 836 #if defined(OS_ANDROID)
 837 TEST_F(FileStreamTest, ContentUriRead) {
 838   base::FilePath test_dir;
 839   PathService::Get(base::DIR_SOURCE_ROOT, &test_dir);
 840   test_dir = test_dir.AppendASCII("net");
 841   test_dir = test_dir.AppendASCII("data");
 842   test_dir = test_dir.AppendASCII("file_stream_unittest");
 843   ASSERT_TRUE(base::PathExists(test_dir));
 844   base::FilePath image_file = test_dir.Append(FILE_PATH_LITERAL("red.png"));
 845
 846   // Insert the image into MediaStore. MediaStore will do some conversions, and
 847   // return the content URI.
 848   base::FilePath path = file_util::InsertImageIntoMediaStore(image_file);
 849   EXPECT_TRUE(path.IsContentUri());
 850   EXPECT_TRUE(base::PathExists(path));
 851   int64 file_size;
 852   EXPECT_TRUE(base::GetFileSize(path, &file_size));
 853   EXPECT_LT(0, file_size);
 854
 855   FileStream stream(base::MessageLoopProxy::current());
 856   int flags = base::File::FLAG_OPEN | base::File::FLAG_READ |
 857               base::File::FLAG_ASYNC;
 858   TestCompletionCallback callback;
 859   int rv = stream.Open(path, flags, callback.callback());
 860   EXPECT_EQ(ERR_IO_PENDING, rv);
 861   EXPECT_EQ(OK, callback.WaitForResult());
 862
 863   int total_bytes_read = 0;
 864
 865   std::string data_read;
 866   for (;;) {
 867     scoped_refptr<IOBufferWithSize> buf = new IOBufferWithSize(4);
 868     rv = stream.Read(buf.get(), buf->size(), callback.callback());
 869     if (rv == ERR_IO_PENDING)
 870       rv = callback.WaitForResult();
 871     EXPECT_LE(0, rv);
 872     if (rv <= 0)
 873       break;
 874     total_bytes_read += rv;
 875     data_read.append(buf->data(), rv);
 876   }
 877   EXPECT_EQ(file_size, total_bytes_read);
 878 }
 879 #endif
 880
 881 }  // namespace
 882
 883 }  // namespace net