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// Copyright (c) 2006-2008 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 "net/disk_cache/disk_cache_test_util.h"
#include "net/disk_cache/mapped_file.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
int g_cache_tests_max_id;
volatile int g_cache_tests_received;
volatile bool g_cache_tests_error;
// Implementation of FileIOCallback for the tests.
class FileCallbackTest: public disk_cache::FileIOCallback {
public:
explicit FileCallbackTest(int id) : id_(id), reuse_(0) {}
explicit FileCallbackTest(int id, bool reuse)
: id_(id), reuse_(reuse_ ? 0 : 1) {}
~FileCallbackTest() {}
virtual void OnFileIOComplete(int bytes_copied);
private:
int id_;
int reuse_;
};
void FileCallbackTest::OnFileIOComplete(int bytes_copied) {
if (id_ > g_cache_tests_max_id) {
NOTREACHED();
g_cache_tests_error = true;
} else if (reuse_) {
DCHECK(1 == reuse_);
if (2 == reuse_)
g_cache_tests_error = true;
reuse_++;
}
g_cache_tests_received++;
}
// Wait up to 2 secs without callbacks, or until we receive expected callbacks.
void WaitForCallbacks(int expected) {
if (!expected)
return;
int iterations = 0;
int last = 0;
while (iterations < 40) {
SleepEx(50, TRUE);
if (expected == g_cache_tests_received)
return;
if (last == g_cache_tests_received)
iterations++;
else
iterations = 0;
}
}
} // namespace
TEST(DiskCacheTest, MappedFile_SyncIO) {
std::wstring filename = GetCachePath();
file_util::AppendToPath(&filename, L"a_test");
scoped_refptr<disk_cache::MappedFile> file(new disk_cache::MappedFile);
ASSERT_TRUE(CreateCacheTestFile(filename.c_str()));
ASSERT_TRUE(file->Init(filename, 8192));
char buffer1[20];
char buffer2[20];
CacheTestFillBuffer(buffer1, sizeof(buffer1), false);
strcpy_s(buffer1, "the data");
EXPECT_TRUE(file->Write(buffer1, sizeof(buffer1), 8192));
EXPECT_TRUE(file->Read(buffer2, sizeof(buffer2), 8192));
EXPECT_STREQ(buffer1, buffer2);
}
TEST(DiskCacheTest, MappedFile_AsyncIO) {
std::wstring filename = GetCachePath();
file_util::AppendToPath(&filename, L"a_test");
scoped_refptr<disk_cache::MappedFile> file(new disk_cache::MappedFile);
ASSERT_TRUE(CreateCacheTestFile(filename.c_str()));
ASSERT_TRUE(file->Init(filename, 8192));
FileCallbackTest callback(1);
g_cache_tests_error = false;
g_cache_tests_max_id = 0;
g_cache_tests_received = 0;
char buffer1[20];
char buffer2[20];
CacheTestFillBuffer(buffer1, sizeof(buffer1), false);
strcpy_s(buffer1, "the data");
bool completed;
EXPECT_TRUE(file->Write(buffer1, sizeof(buffer1), 1024 * 1024, &callback,
&completed));
int expected = completed ? 0 : 1;
g_cache_tests_max_id = 1;
WaitForCallbacks(expected);
EXPECT_TRUE(file->Read(buffer2, sizeof(buffer2), 1024 * 1024, &callback,
&completed));
if (!completed)
expected++;
WaitForCallbacks(expected);
EXPECT_EQ(expected, g_cache_tests_received);
EXPECT_FALSE(g_cache_tests_error);
EXPECT_STREQ(buffer1, buffer2);
}
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