net: Move data reading functionalities from UploadElement to UploadElementReader

net/base/upload_file_element_reader_unittest.cc

+// 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 "net/base/upload_file_element_reader.h"
+
+#include "base/file_util.h"
+#include "base/scoped_temp_dir.h"
+#include "net/base/net_errors.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/platform_test.h"
+
+namespace net {
+
+class UploadFileElementReaderTest : public PlatformTest {
+ protected:
+  virtual void SetUp() OVERRIDE {
+    const char kData[] = "123456789abcdefghi";
+    bytes_.assign(kData, kData + arraysize(kData));
+
+    ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
+
+    ASSERT_TRUE(file_util::CreateTemporaryFileInDir(temp_dir_.path(),
+                                                    &temp_file_path_));
+    ASSERT_EQ(
+        static_cast<int>(bytes_.size()),
+        file_util::WriteFile(temp_file_path_, &bytes_[0], bytes_.size()));
+
+    reader_.reset(new UploadFileElementReader(
+        temp_file_path_, 0, kuint64max, base::Time()));
+    ASSERT_EQ(OK, reader_->InitSync());
+    EXPECT_EQ(bytes_.size(), reader_->GetContentLength());
+    EXPECT_EQ(bytes_.size(), reader_->BytesRemaining());
+    EXPECT_FALSE(reader_->IsInMemory());
+  }
+
+  std::vector<char> bytes_;
+  scoped_ptr<UploadElementReader> reader_;
+  ScopedTempDir temp_dir_;
+  FilePath temp_file_path_;
+};
+
+TEST_F(UploadFileElementReaderTest, ReadPartially) {
+  const size_t kHalfSize = bytes_.size() / 2;
+  std::vector<char> buf(kHalfSize);
+  EXPECT_EQ(static_cast<int>(buf.size()),
+            reader_->ReadSync(&buf[0], buf.size()));
+  EXPECT_EQ(bytes_.size() - buf.size(), reader_->BytesRemaining());
+  bytes_.resize(kHalfSize);  // Resize to compare.
+  EXPECT_EQ(bytes_, buf);
+}
+
+TEST_F(UploadFileElementReaderTest, ReadAll) {
+  std::vector<char> buf(bytes_.size());
+  EXPECT_EQ(static_cast<int>(buf.size()),
+            reader_->ReadSync(&buf[0], buf.size()));
+  EXPECT_EQ(0U, reader_->BytesRemaining());
+  EXPECT_EQ(bytes_, buf);
+  // Try to read again.
+  EXPECT_EQ(0, reader_->ReadSync(&buf[0], buf.size()));
+}
+
+TEST_F(UploadFileElementReaderTest, ReadTooMuch) {
+  const size_t kTooLargeSize = bytes_.size() * 2;
+  std::vector<char> buf(kTooLargeSize);
+  EXPECT_EQ(static_cast<int>(bytes_.size()),
+            reader_->ReadSync(&buf[0], buf.size()));
+  EXPECT_EQ(0U, reader_->BytesRemaining());
+  buf.resize(bytes_.size());  // Resize to compare.
+  EXPECT_EQ(bytes_, buf);
+}
+
+TEST_F(UploadFileElementReaderTest, Range) {
+  const uint64 kOffset = 2;
+  const uint64 kLength = bytes_.size() - kOffset * 3;
+  reader_.reset(new UploadFileElementReader(
+      temp_file_path_, kOffset, kLength, base::Time()));
+  ASSERT_EQ(OK, reader_->InitSync());
+  EXPECT_EQ(kLength, reader_->GetContentLength());
+  EXPECT_EQ(kLength, reader_->BytesRemaining());
+  std::vector<char> buf(kLength);
+  EXPECT_EQ(static_cast<int>(kLength),
+            reader_->ReadSync(&buf[0], kLength));
+  const std::vector<char> expected(bytes_.begin() + kOffset,
+                                   bytes_.begin() + kOffset + kLength);
+  EXPECT_EQ(expected, buf);
+}
+
+TEST_F(UploadFileElementReaderTest, FileChanged) {
+  base::PlatformFileInfo info;
+  ASSERT_TRUE(file_util::GetFileInfo(temp_file_path_, &info));
+
+  // Expect one second before the actual modification time to simulate change.
+  const base::Time expected_modification_time =
+      info.last_modified - base::TimeDelta::FromSeconds(1);
+  reader_.reset(new UploadFileElementReader(
+      temp_file_path_, 0, kuint64max, expected_modification_time));
+  EXPECT_EQ(ERR_UPLOAD_FILE_CHANGED, reader_->InitSync());
+}
+
+TEST_F(UploadFileElementReaderTest, WrongPath) {
+  const FilePath wrong_path(FILE_PATH_LITERAL("wrong_path"));
+  reader_.reset(new UploadFileElementReader(
+      wrong_path, 0, kuint64max, base::Time()));
+  ASSERT_EQ(OK, reader_->InitSync());
+  EXPECT_EQ(0U, reader_->GetContentLength());
+  EXPECT_EQ(0U, reader_->BytesRemaining());
+}
+
+}  // namespace net