abort-signal.js 2.3 KB

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  1. const { AbortController, AbortSignal } = require("../index.js");
  2. describe("AbortSignal", function () {
  3. it("should implement EventTarget", function () {
  4. const controller = new AbortController();
  5. const signal = controller.signal;
  6. const unusedHandler = jest.fn();
  7. const handler = jest.fn();
  8. const event = { type: "abort", target: signal };
  9. signal.onabort = jest.fn();
  10. signal.addEventListener("abort", handler);
  11. signal.addEventListener("abort", unusedHandler);
  12. signal.removeEventListener("abort", unusedHandler);
  13. signal.dispatchEvent("abort", event);
  14. expect(unusedHandler).not.toBeCalled();
  15. expect(handler).toBeCalledTimes(1);
  16. expect(handler).toBeCalledWith(event);
  17. expect(signal.onabort).toBeCalledTimes(1);
  18. expect(signal.onabort).toBeCalledWith(event);
  19. jest.clearAllMocks();
  20. signal.dispatchEvent("abort", event);
  21. expect(unusedHandler).not.toBeCalled();
  22. expect(handler).toBeCalledTimes(1);
  23. expect(handler).toBeCalledWith(event);
  24. expect(signal.onabort).toBeCalledTimes(1);
  25. expect(signal.onabort).toBeCalledWith(event);
  26. jest.clearAllMocks();
  27. signal.dispatchEvent("unknown", event);
  28. expect(unusedHandler).not.toBeCalled();
  29. expect(handler).not.toBeCalled();
  30. expect(signal.onabort).not.toBeCalled();
  31. });
  32. it("should implement throwIfAborted", function () {
  33. const controller = new AbortController();
  34. const signal = controller.signal;
  35. expect(() => signal.throwIfAborted()).not.toThrowError();
  36. controller.abort();
  37. expect(() => signal.throwIfAborted()).toThrowError(new Error("AbortError"));
  38. });
  39. });
  40. describe("Static methods", () => {
  41. jest.useFakeTimers();
  42. jest.spyOn(global, "setTimeout");
  43. it("should implement abort", function () {
  44. const signal = AbortSignal.abort();
  45. expect(signal.aborted).toBe(true);
  46. expect(signal.reason).toEqual(new Error("AbortError"));
  47. });
  48. it("should implement timeout", function () {
  49. const signal = AbortSignal.timeout(1000);
  50. expect(setTimeout).toHaveBeenCalledTimes(1);
  51. expect(setTimeout).toHaveBeenLastCalledWith(expect.any(Function), 1000);
  52. expect(signal.aborted).toBe(false);
  53. expect(signal.reason).toBeUndefined();
  54. jest.runAllTimers();
  55. expect(signal.aborted).toBe(true);
  56. expect(signal.reason).toEqual(new Error("TimeoutError"));
  57. });
  58. });