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// Copyright (c) 2011 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/basictypes.h"
#include "base/files/file_path.h"
#include "base/strings/string_util.h"
#include "net/disk_cache/disk_cache_test_base.h"
#include "net/disk_cache/disk_cache_test_util.h"
#include "net/disk_cache/mapped_file.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
// Implementation of FileIOCallback for the tests.
class FileCallbackTest: public disk_cache::FileIOCallback {
public:
FileCallbackTest(int id, MessageLoopHelper* helper, int* max_id)
: id_(id),
helper_(helper),
max_id_(max_id) {
}
virtual ~FileCallbackTest() {}
virtual void OnFileIOComplete(int bytes_copied) OVERRIDE;
private:
int id_;
MessageLoopHelper* helper_;
int* max_id_;
};
void FileCallbackTest::OnFileIOComplete(int bytes_copied) {
if (id_ > *max_id_) {
NOTREACHED();
helper_->set_callback_reused_error(true);
}
helper_->CallbackWasCalled();
}
} // namespace
TEST_F(DiskCacheTest, MappedFile_SyncIO) {
base::FilePath filename = cache_path_.AppendASCII("a_test");
scoped_refptr<disk_cache::MappedFile> file(new disk_cache::MappedFile);
ASSERT_TRUE(CreateCacheTestFile(filename));
ASSERT_TRUE(file->Init(filename, 8192));
char buffer1[20];
char buffer2[20];
CacheTestFillBuffer(buffer1, sizeof(buffer1), false);
base::strlcpy(buffer1, "the data", arraysize(buffer1));
EXPECT_TRUE(file->Write(buffer1, sizeof(buffer1), 8192));
EXPECT_TRUE(file->Read(buffer2, sizeof(buffer2), 8192));
EXPECT_STREQ(buffer1, buffer2);
}
TEST_F(DiskCacheTest, MappedFile_AsyncIO) {
base::FilePath filename = cache_path_.AppendASCII("a_test");
scoped_refptr<disk_cache::MappedFile> file(new disk_cache::MappedFile);
ASSERT_TRUE(CreateCacheTestFile(filename));
ASSERT_TRUE(file->Init(filename, 8192));
int max_id = 0;
MessageLoopHelper helper;
FileCallbackTest callback(1, &helper, &max_id);
char buffer1[20];
char buffer2[20];
CacheTestFillBuffer(buffer1, sizeof(buffer1), false);
base::strlcpy(buffer1, "the data", arraysize(buffer1));
bool completed;
EXPECT_TRUE(file->Write(buffer1, sizeof(buffer1), 1024 * 1024, &callback,
&completed));
int expected = completed ? 0 : 1;
max_id = 1;
helper.WaitUntilCacheIoFinished(expected);
EXPECT_TRUE(file->Read(buffer2, sizeof(buffer2), 1024 * 1024, &callback,
&completed));
if (!completed)
expected++;
helper.WaitUntilCacheIoFinished(expected);
EXPECT_EQ(expected, helper.callbacks_called());
EXPECT_FALSE(helper.callback_reused_error());
EXPECT_STREQ(buffer1, buffer2);
}
TEST_F(DiskCacheTest, MappedFile_MemoryAccess) {
const size_t page_size = 4096;
const size_t buffer_size = 20;
size_t file_sizes[] = { 2 * page_size,
8 * page_size + buffer_size};
bool full_writes[] = { false, true };
for (size_t i = 0; i < arraysize(file_sizes); ++i) {
size_t file_size = file_sizes[i];
for (size_t j = 0; j < arraysize(full_writes); ++j) {
bool full_write = full_writes[j];
base::FilePath filename = cache_path_.AppendASCII("a_test");
scoped_refptr<disk_cache::MappedFile> file(new disk_cache::MappedFile);
ASSERT_TRUE(CreateCacheTestFileWithSize(filename, file_size));
ASSERT_TRUE(file->Init(filename, file_size));
char buffer1[buffer_size];
char buffer2[buffer_size];
CacheTestFillBuffer(buffer1, buffer_size, false);
char* buffer = reinterpret_cast<char*>(file->buffer());
memcpy(buffer, buffer1, buffer_size);
if (full_write) {
for (size_t k = page_size; k <= file_size / 2; k += page_size) {
memcpy(buffer + k, buffer1, buffer_size);
}
}
file->Flush();
file->Read(buffer2, buffer_size, 0);
EXPECT_EQ(0, strncmp(buffer1, buffer2, buffer_size));
if (full_write) {
for (size_t k = page_size; k <= file_size / 2; k += page_size) {
file->Read(buffer2, buffer_size, k);
EXPECT_EQ(0, strncmp(buffer1, buffer2, buffer_size));
}
}
// Checking writes at the end of the file.
memcpy(buffer + file_size - buffer_size, buffer1, buffer_size);
file->Flush();
file->Read(buffer2, buffer_size, file_size - buffer_size);
EXPECT_EQ(0, strncmp(buffer1, buffer2, buffer_size));
file->Flush();
EXPECT_EQ(file_size, file->GetLength());
}
}
}
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