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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 "net/disk_cache/disk_cache_test_util.h"
#include "base/logging.h"
#include "base/file_util.h"
#include "base/message_loop_proxy.h"
#include "base/path_service.h"
#include "net/base/net_errors.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;
namespace {
FilePath BuildCachePath(const std::string& name) {
FilePath path;
PathService::Get(base::DIR_TEMP, &path); // Ignore return value;
path = path.AppendASCII(name);
if (!file_util::PathExists(path))
file_util::CreateDirectory(path);
return path;
}
} // namespace.
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';
}
FilePath GetCacheFilePath() {
return BuildCachePath("cache_test");
}
bool CreateCacheTestFile(const FilePath& name) {
int flags = base::PLATFORM_FILE_CREATE_ALWAYS |
base::PLATFORM_FILE_READ |
base::PLATFORM_FILE_WRITE;
scoped_refptr<disk_cache::File> file(new disk_cache::File(
base::CreatePlatformFile(name, flags, NULL, NULL)));
if (!file->IsValid())
return false;
file->SetLength(4 * 1024 * 1024);
return true;
}
bool DeleteCache(const FilePath& path) {
disk_cache::DeleteCache(path, false);
return true;
}
bool CopyTestCache(const std::string& name) {
FilePath path;
PathService::Get(base::DIR_SOURCE_ROOT, &path);
path = path.AppendASCII("net");
path = path.AppendASCII("data");
path = path.AppendASCII("cache_tests");
path = path.AppendASCII(name);
FilePath dest = GetCacheFilePath();
if (!DeleteCache(dest))
return false;
return file_util::CopyDirectory(path, dest, false);
}
bool CheckCacheIntegrity(const FilePath& path, bool new_eviction) {
scoped_ptr<disk_cache::BackendImpl> cache(new disk_cache::BackendImpl(
path, base::MessageLoopProxy::current(), NULL));
if (!cache.get())
return false;
if (new_eviction)
cache->SetNewEviction();
cache->SetFlags(disk_cache::kNoRandom);
if (cache->SyncInit() != net::OK)
return false;
return cache->SelfCheck() >= 0;
}
ScopedTestCache::ScopedTestCache() : path_(GetCacheFilePath()) {
bool result = DeleteCache(path_);
DCHECK(result);
}
ScopedTestCache::ScopedTestCache(const std::string& name)
: path_(BuildCachePath(name)) {
bool result = DeleteCache(path_);
DCHECK(result);
}
ScopedTestCache::~ScopedTestCache() {
file_util::Delete(path(), true);
}
// -----------------------------------------------------------------------
MessageLoopHelper::MessageLoopHelper()
: num_callbacks_(0),
num_iterations_(0),
last_(0),
completed_(false),
callback_reused_error_(false),
callbacks_called_(0) {
}
MessageLoopHelper::~MessageLoopHelper() {
}
bool MessageLoopHelper::WaitUntilCacheIoFinished(int num_callbacks) {
if (num_callbacks == callbacks_called_)
return true;
ExpectCallbacks(num_callbacks);
// Create a recurrent timer of 50 mS.
if (!timer_.IsRunning())
timer_.Start(FROM_HERE, TimeDelta::FromMilliseconds(50), this,
&MessageLoopHelper::TimerExpired);
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() {
CHECK_LE(callbacks_called_, num_callbacks_);
if (callbacks_called_ == num_callbacks_) {
completed_ = true;
MessageLoop::current()->Quit();
} else {
// Not finished yet. See if we have to abort.
if (last_ == callbacks_called_)
num_iterations_++;
else
last_ = callbacks_called_;
if (40 == num_iterations_)
MessageLoop::current()->Quit();
}
}
// -----------------------------------------------------------------------
CallbackTest::CallbackTest(MessageLoopHelper* helper,
bool reuse)
: helper_(helper),
reuse_(reuse ? 0 : 1) {
}
CallbackTest::~CallbackTest() {
}
// 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 (reuse_) {
DCHECK_EQ(1, reuse_);
if (2 == reuse_)
helper_->set_callback_reused_error(true);
reuse_++;
}
helper_->CallbackWasCalled();
}
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