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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 "net/disk_cache/disk_cache_test_util.h"
#include "base/file_util.h"
#include "base/path_service.h"
#include "net/disk_cache/backend_impl.h"
#include "net/disk_cache/cache_util.h"
#include "net/disk_cache/file.h"
using base::Time;
using base::TimeDelta;
std::string GenerateKey(bool same_length) {
char key[200];
CacheTestFillBuffer(key, sizeof(key), same_length);
key[199] = '\0';
return std::string(key);
}
void CacheTestFillBuffer(char* buffer, size_t len, bool no_nulls) {
static bool called = false;
if (!called) {
called = true;
int seed = static_cast<int>(Time::Now().ToInternalValue());
srand(seed);
}
for (size_t i = 0; i < len; i++) {
buffer[i] = static_cast<char>(rand());
if (!buffer[i] && no_nulls)
buffer[i] = 'g';
}
if (len && !buffer[0])
buffer[0] = 'g';
}
std::wstring GetCachePath() {
std::wstring path;
PathService::Get(base::DIR_TEMP, &path);
file_util::AppendToPath(&path, L"cache_test");
if (!file_util::PathExists(path))
file_util::CreateDirectory(path);
return path;
}
bool CreateCacheTestFile(const wchar_t* name) {
using namespace disk_cache;
int flags = base::PLATFORM_FILE_CREATE_ALWAYS |
base::PLATFORM_FILE_READ |
base::PLATFORM_FILE_WRITE;
scoped_refptr<File> file(new File(
base::CreatePlatformFile(name, flags, NULL)));
if (!file->IsValid())
return false;
file->SetLength(4 * 1024 * 1024);
return true;
}
bool DeleteCache(const wchar_t* path) {
disk_cache::DeleteCache(path, false);
return true;
}
bool CheckCacheIntegrity(const std::wstring& path) {
scoped_ptr<disk_cache::BackendImpl> cache(new disk_cache::BackendImpl(path));
if (!cache.get())
return false;
if (!cache->Init())
return false;
return cache->SelfCheck() >= 0;
}
// -----------------------------------------------------------------------
int g_cache_tests_max_id = 0;
volatile int g_cache_tests_received = 0;
volatile bool g_cache_tests_error = 0;
// On the actual callback, increase the number of tests received and check for
// errors (an unexpected test received)
void CallbackTest::RunWithParams(const Tuple1<int>& params) {
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++;
}
// -----------------------------------------------------------------------
MessageLoopHelper::MessageLoopHelper()
: num_callbacks_(0),
num_iterations_(0),
last_(0),
completed_(false) {
// Create a recurrent timer of 50 mS.
timer_.Start(
TimeDelta::FromMilliseconds(50), this, &MessageLoopHelper::TimerExpired);
}
bool MessageLoopHelper::WaitUntilCacheIoFinished(int num_callbacks) {
if (num_callbacks == g_cache_tests_received)
return true;
ExpectCallbacks(num_callbacks);
MessageLoop::current()->Run();
return completed_;
}
// Quits the message loop when all callbacks are called or we've been waiting
// too long for them (2 secs without a callback).
void MessageLoopHelper::TimerExpired() {
if (g_cache_tests_received > num_callbacks_) {
NOTREACHED();
} else if (g_cache_tests_received == num_callbacks_) {
completed_ = true;
MessageLoop::current()->Quit();
} else {
// Not finished yet. See if we have to abort.
if (last_ == g_cache_tests_received)
num_iterations_++;
else
last_ = g_cache_tests_received;
if (40 == num_iterations_)
MessageLoop::current()->Quit();
}
}
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