Add write and read/write support to FileStream (renamed from FileInputStream)...

net/base/file_input_stream_unittest.cc

-// Copyright (c) 2008 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 "base/file_util.h"
-#include "base/path_service.h"
-#include "base/platform_test.h"
-#include "net/base/file_input_stream.h"
-#include "net/base/net_errors.h"
-#include "net/base/test_completion_callback.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-static const char kTestData[] = "0123456789";
-
-class FileInputStreamTest : public PlatformTest {
- public:
-  virtual void SetUp() {
-    PlatformTest::SetUp();
-
-    file_util::CreateTemporaryFileName(&temp_file_path_);
-    file_util::WriteFile(temp_file_path_, kTestData, arraysize(kTestData)-1);
-  }
-  virtual void TearDown() {
-    file_util::Delete(temp_file_path_, false);
-
-    PlatformTest::TearDown();
-  }
-  const std::wstring temp_file_path() const { return temp_file_path_; }
- private:
-  std::wstring temp_file_path_;
-};
-
-TEST_F(FileInputStreamTest, BasicOpenClose) {
-  net::FileInputStream stream;
-  int rv = stream.Open(temp_file_path(), false);
-  EXPECT_EQ(net::OK, rv);
-}
-
-TEST_F(FileInputStreamTest, UseClosedStream) {
-  net::FileInputStream stream;
-
-  EXPECT_FALSE(stream.IsOpen());
-
-  // Try seeking...
-  int64 new_offset = stream.Seek(net::FROM_BEGIN, 5);
-  EXPECT_EQ(net::ERR_UNEXPECTED, new_offset);
-
-  // Try available...
-  int64 avail = stream.Available();
-  EXPECT_EQ(net::ERR_UNEXPECTED, avail);
-
-  // Try reading...
-  char buf[10];
-  int rv = stream.Read(buf, sizeof(buf), NULL);
-  EXPECT_EQ(net::ERR_UNEXPECTED, rv);
-}
-
-TEST_F(FileInputStreamTest, BasicRead) {
-  int64 file_size;
-  bool ok = file_util::GetFileSize(temp_file_path(), &file_size);
-  EXPECT_TRUE(ok);
-
-  net::FileInputStream stream;
-  int rv = stream.Open(temp_file_path(), false);
-  EXPECT_EQ(net::OK, rv);
-
-  int64 total_bytes_avail = stream.Available();
-  EXPECT_EQ(file_size, total_bytes_avail);
-
-  int64 total_bytes_read = 0;
-
-  std::string data_read;
-  for (;;) {
-    char buf[4];
-    rv = stream.Read(buf, sizeof(buf), NULL);
-    EXPECT_LE(0, rv);
-    if (rv <= 0)
-      break;
-    total_bytes_read += rv;
-    data_read.append(buf, rv);
-  }
-  EXPECT_EQ(file_size, total_bytes_read);
-  EXPECT_TRUE(data_read == kTestData);
-}
-
-TEST_F(FileInputStreamTest, AsyncRead) {
-  int64 file_size;
-  bool ok = file_util::GetFileSize(temp_file_path(), &file_size);
-  EXPECT_TRUE(ok);
-
-  net::FileInputStream stream;
-  int rv = stream.Open(temp_file_path(), true);
-  EXPECT_EQ(net::OK, rv);
-
-  int64 total_bytes_avail = stream.Available();
-  EXPECT_EQ(file_size, total_bytes_avail);
-
-  TestCompletionCallback callback;
-
-  int64 total_bytes_read = 0;
-
-  std::string data_read;
-  for (;;) {
-    char buf[4];
-    rv = stream.Read(buf, sizeof(buf), &callback);
-    if (rv == net::ERR_IO_PENDING)
-      rv = callback.WaitForResult();
-    EXPECT_LE(0, rv);
-    if (rv <= 0)
-      break;
-    total_bytes_read += rv;
-    data_read.append(buf, rv);
-  }
-  EXPECT_EQ(file_size, total_bytes_read);
-  EXPECT_TRUE(data_read == kTestData);
-}
-
-TEST_F(FileInputStreamTest, BasicRead_FromOffset) {
-  int64 file_size;
-  bool ok = file_util::GetFileSize(temp_file_path(), &file_size);
-  EXPECT_TRUE(ok);
-
-  net::FileInputStream stream;
-  int rv = stream.Open(temp_file_path(), false);
-  EXPECT_EQ(net::OK, rv);
-
-  const int64 kOffset = 3;
-  int64 new_offset = stream.Seek(net::FROM_BEGIN, kOffset);
-  EXPECT_EQ(kOffset, new_offset);
-
-  int64 total_bytes_avail = stream.Available();
-  EXPECT_EQ(file_size - kOffset, total_bytes_avail);
-
-  int64 total_bytes_read = 0;
-
-  std::string data_read;
-  for (;;) {
-    char buf[4];
-    rv = stream.Read(buf, sizeof(buf), NULL);
-    EXPECT_LE(0, rv);
-    if (rv <= 0)
-      break;
-    total_bytes_read += rv;
-    data_read.append(buf, rv);
-  }
-  EXPECT_EQ(file_size - kOffset, total_bytes_read);
-  EXPECT_TRUE(data_read == kTestData + kOffset);
-}
-
-TEST_F(FileInputStreamTest, AsyncRead_FromOffset) {
-  int64 file_size;
-  bool ok = file_util::GetFileSize(temp_file_path(), &file_size);
-  EXPECT_TRUE(ok);
-
-  net::FileInputStream stream;
-  int rv = stream.Open(temp_file_path(), true);
-  EXPECT_EQ(net::OK, rv);
-
-  const int64 kOffset = 3;
-  int64 new_offset = stream.Seek(net::FROM_BEGIN, kOffset);
-  EXPECT_EQ(kOffset, new_offset);
-
-  int64 total_bytes_avail = stream.Available();
-  EXPECT_EQ(file_size - kOffset, total_bytes_avail);
-
-  TestCompletionCallback callback;
-
-  int64 total_bytes_read = 0;
-
-  std::string data_read;
-  for (;;) {
-    char buf[4];
-    rv = stream.Read(buf, sizeof(buf), &callback);
-    if (rv == net::ERR_IO_PENDING)
-      rv = callback.WaitForResult();
-    EXPECT_LE(0, rv);
-    if (rv <= 0)
-      break;
-    total_bytes_read += rv;
-    data_read.append(buf, rv);
-  }
-  EXPECT_EQ(file_size - kOffset, total_bytes_read);
-  EXPECT_TRUE(data_read == kTestData + kOffset);
-}
-
-TEST_F(FileInputStreamTest, SeekAround) {
-  net::FileInputStream stream;
-  int rv = stream.Open(temp_file_path(), true);
-  EXPECT_EQ(net::OK, rv);
-
-  const int64 kOffset = 3;
-  int64 new_offset = stream.Seek(net::FROM_BEGIN, kOffset);
-  EXPECT_EQ(kOffset, new_offset);
-
-  new_offset = stream.Seek(net::FROM_CURRENT, kOffset);
-  EXPECT_EQ(2 * kOffset, new_offset);
-
-  new_offset = stream.Seek(net::FROM_CURRENT, -kOffset);
-  EXPECT_EQ(kOffset, new_offset);
-
-  const int kTestDataLen = arraysize(kTestData) - 1;
-
-  new_offset = stream.Seek(net::FROM_END, -kTestDataLen);
-  EXPECT_EQ(0, new_offset);
-}