/**
 * Copyright 2022 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { Logger } from 'opr-core';
/** A launcher for a local, empty instance of Postgres for testing. */
export interface PostgresTestingLauncherOptions {
    postgresBinaryPath?: string;
    postgresInitDbPath?: string;
    postgresPsqlPath?: string;
    dbPath?: string;
    postgresPort?: number;
    dbName?: string;
    logger?: Logger;
}
export declare class PostgresTestingLauncher {
    private readonly postgresBinaryPath?;
    private readonly postgresInitDbPath?;
    private readonly postgresPsqlPath?;
    private readonly requestedPostgresPort?;
    private readonly dbPath;
    private readonly dbName;
    private isShutDown;
    private isShuttingDown;
    private postgresProcess?;
    private postgresActivePort?;
    private stdoutData;
    private stderrData;
    private logger;
    constructor(options?: PostgresTestingLauncherOptions);
    private findPostgres;
    getPort(): number | undefined;
    isPostgresAvailable(): boolean;
    private startPostgres;
    getStdoutLog(): string;
    getStderrLog(): string;
    private initDb;
    start(): Promise<void>;
    shutdown(): void;
}
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