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// Copyright 2013 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.
#ifndef SQL_TEST_SCOPED_ERROR_IGNORER_H_
#define SQL_TEST_SCOPED_ERROR_IGNORER_H_
#include <set>
#include "base/macros.h"
#include "sql/connection.h"
// This is not strictly necessary for the operation of ScopedErrorIgnorer, but
// the class is not useful without the SQLite error codes.
#include "third_party/sqlite/sqlite3.h"
// TODO(shess): sql::test:: seems like it could be in order for this.
namespace sql {
// sql::Connection and sql::Statement treat most SQLite errors as
// fatal in debug mode. The intention is to catch inappropriate uses
// of SQL before the code is shipped to production. This makes it
// challenging to write tests for things like recovery from
// corruption. This scoper can be used to ignore selected errors
// during a test. Errors are ignored globally (on all connections).
//
// Since errors can be very context-dependent, the class is pedantic -
// specific errors must be ignored, and every error ignored must be
// seen.
//
// NOTE(shess): There are still fatal error cases this does not
// address. If your test is handling database errors and you're
// hitting a case not handled, contact me.
class ScopedErrorIgnorer {
public:
ScopedErrorIgnorer();
~ScopedErrorIgnorer();
// Add an error to ignore. Extended error codes can be ignored
// specifically, or the base code can ignore an entire group
// (SQLITE_IOERR_* versus SQLITE_IOERR).
void IgnoreError(int err);
// Allow containing test to check if the errors were encountered.
// Failure to call results in ADD_FAILURE() in destructor.
bool CheckIgnoredErrors();
// Record an error and check if it should be ignored.
bool ShouldIgnore(int err);
// Expose sqlite3_libversion_number() so that clients don't have to add a
// dependency on third_party/sqlite.
static int SQLiteLibVersionNumber();
private:
// Storage for callback passed to Connection::SetErrorIgnorer().
Connection::ErrorIgnorerCallback callback_;
// Record whether CheckIgnoredErrors() has been called.
bool checked_;
// Errors to ignore.
std::set<int> ignore_errors_;
// Errors which have been ignored.
std::set<int> errors_ignored_;
DISALLOW_COPY_AND_ASSIGN(ScopedErrorIgnorer);
};
} // namespace sql
#endif // SQL_TEST_SCOPED_ERROR_IGNORER_H_
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