import { Task } from '../../src';
/**
 * Dummy task lets us set expectations for (eventual) calls to {@link Task#execute} by
 * the task scheduler.
 *
 * It also (and more importantly) allows us to retrieve the promises given to the
 * task scheduler, letting a testcase wait until the scheduler makes a particular call.
 */
export default class MockTask implements Task {
    private promises;
    private resolvers;
    private callCount;
    private shutdownCallCount;
    constructor();
    execute(): Promise<boolean>;
    shutdown(): void;
    getCallResult(callNumber: number): Promise<boolean>;
    /**
     * Set result of a particular call.
     *
     * If `result` is a string, call will throw an Error with that message.
     * If `result` is a boolean, call will resolve to that value.
     * If `result` is a function, it will be called to obtain a boolean or string.
     */
    setCallResult(callNumber: number, result?: boolean | string | Function): void;
    private addDelayedPromise;
    getShutdownCallCount(): number;
}