/**
 * 创建可以被控制 promise，以便于在一条 timeline 上对测试流程上进行控制
 * 可参考 components/button/src/index.spec.tsx 中 async action loading with delay 部分
 */
export interface ControlledPromise<T = unknown, PT = T | undefined> {
    promise: Promise<PT>;
    resolve: (result?: PT) => Promise<PT>;
    reject: (error?: any) => Promise<PT>;
}
export declare function createControlledPromise<T = void>(): ControlledPromise<T>;
export declare function clearDocumentBody(): void;
export declare function mockGetBoundingClientRect($el: HTMLElement, rect?: Partial<DOMRect>): void;
export declare function mockElementPropValue($el: HTMLElement, propName: keyof HTMLElement, value: unknown): void;
export declare function mockElementProps($el: HTMLElement, props: Record<string, unknown>): void;
export declare class DOMRectMock {
    x: number;
    y: number;
    width: number;
    height: number;
    top: number;
    bottom: number;
    left: number;
    right: number;
    constructor(options: Partial<DOMRect>);
    toJSON(): string;
}
export declare function createDOMRectMock(options: Partial<DOMRect>): DOMRectMock;