Method mockFlush

packages/common/http/test/fetch_spec.ts:723–749

(
    status: number,
    statusText: string,
    body?: string | Blob,
    headers?: Record<string, string>,
  )

  };

  mockFlush(
    status: number,
    statusText: string,
    body?: string | Blob,
    headers?: Record<string, string>,
  ): void {
    this.clearWarningTimeout?.();
    if (typeof body === 'string') {
      this.response.setupBodyStream(body);
    } else {
      this.response.setBody(body);
    }
    const response = new Response(this.response.stream, {
      statusText,
      headers: {...this.response.headers, ...(headers ?? {})},
    });

    // Have to be set outside the constructor because it might throw
    // RangeError: init["status"] must be in the range of 200 to 599, inclusive
    Object.defineProperty(response, 'status', {value: status});

    if (this.response.url) {
      // url is readonly
      Object.defineProperty(response, 'url', {value: this.response.url});
    }
    this.resolve(response);
  }

  mockProgressEvent(loaded: number): void {
    this.response.progress.push(loaded);