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112 lines
3.6 KiB
C++
112 lines
3.6 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NET_DISK_CACHE_DISK_CACHE_TEST_UTIL_H_
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#define NET_DISK_CACHE_DISK_CACHE_TEST_UTIL_H_
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#include <stddef.h>
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#include <stdint.h>
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#include <string>
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#include "base/files/file_path.h"
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#include "base/macros.h"
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#include "base/run_loop.h"
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#include "base/timer/timer.h"
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#include "build/build_config.h"
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// Re-creates a given test file inside the cache test folder.
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bool CreateCacheTestFile(const base::FilePath& name);
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// Deletes all file son the cache.
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bool DeleteCache(const base::FilePath& path);
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// Fills buffer with random values (may contain nulls unless no_nulls is true).
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void CacheTestFillBuffer(char* buffer, size_t len, bool no_nulls);
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// Generates a random key of up to 200 bytes.
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std::string GenerateKey(bool same_length);
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// Returns true if the cache is not corrupt. Assumes blockfile cache.
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// |max_size|, if non-zero, will be set as its size.
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bool CheckCacheIntegrity(const base::FilePath& path,
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bool new_eviction,
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int max_size,
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uint32_t mask);
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// -----------------------------------------------------------------------
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// Simple helper to deal with the message loop on a test.
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class MessageLoopHelper {
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public:
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MessageLoopHelper();
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~MessageLoopHelper();
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// Run the message loop and wait for num_callbacks before returning. Returns
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// false if we are waiting to long. Each callback that will be waited on is
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// required to call CallbackWasCalled() to indicate when it was called.
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bool WaitUntilCacheIoFinished(int num_callbacks);
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// True if a given callback was called more times than it expected.
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bool callback_reused_error() const { return callback_reused_error_; }
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void set_callback_reused_error(bool error) {
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callback_reused_error_ = error;
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}
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int callbacks_called() const { return callbacks_called_; }
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// Report that a callback was called. Each callback that will be waited on
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// via WaitUntilCacheIoFinished() is expected to call this method to
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// indicate when it has been executed.
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void CallbackWasCalled() { ++callbacks_called_; }
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private:
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// Sets the number of callbacks that can be received so far.
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void ExpectCallbacks(int num_callbacks) {
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num_callbacks_ = num_callbacks;
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num_iterations_ = last_ = 0;
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completed_ = false;
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}
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// Called periodically to test if WaitUntilCacheIoFinished should return.
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void TimerExpired();
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std::unique_ptr<base::RunLoop> run_loop_;
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int num_callbacks_;
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int num_iterations_;
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int last_;
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bool completed_;
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// True if a callback was called/reused more than expected.
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bool callback_reused_error_;
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int callbacks_called_;
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DISALLOW_COPY_AND_ASSIGN(MessageLoopHelper);
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};
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// -----------------------------------------------------------------------
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// Simple callback to process IO completions from the cache. It allows tests
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// with multiple simultaneous IO operations.
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class CallbackTest {
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public:
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// Creates a new CallbackTest object. When the callback is called, it will
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// update |helper|. If |reuse| is false and a callback is called more than
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// once, or if |reuse| is true and a callback is called more than twice, an
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// error will be reported to |helper|.
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CallbackTest(MessageLoopHelper* helper, bool reuse);
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~CallbackTest();
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void Run(int result);
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int last_result() const { return last_result_; }
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private:
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MessageLoopHelper* helper_;
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int reuse_;
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int last_result_;
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DISALLOW_COPY_AND_ASSIGN(CallbackTest);
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};
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#endif // NET_DISK_CACHE_DISK_CACHE_TEST_UTIL_H_
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