73 lines
2.3 KiB
JavaScript
73 lines
2.3 KiB
JavaScript
const { AbortController, AbortSignal } = require("../index.js");
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describe("AbortSignal", function () {
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it("should implement EventTarget", function () {
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const controller = new AbortController();
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const signal = controller.signal;
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const unusedHandler = jest.fn();
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const handler = jest.fn();
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const event = { type: "abort", target: signal };
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signal.onabort = jest.fn();
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signal.addEventListener("abort", handler);
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signal.addEventListener("abort", unusedHandler);
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signal.removeEventListener("abort", unusedHandler);
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signal.dispatchEvent("abort", event);
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expect(unusedHandler).not.toBeCalled();
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expect(handler).toBeCalledTimes(1);
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expect(handler).toBeCalledWith(event);
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expect(signal.onabort).toBeCalledTimes(1);
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expect(signal.onabort).toBeCalledWith(event);
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jest.clearAllMocks();
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signal.dispatchEvent("abort", event);
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expect(unusedHandler).not.toBeCalled();
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expect(handler).toBeCalledTimes(1);
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expect(handler).toBeCalledWith(event);
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expect(signal.onabort).toBeCalledTimes(1);
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expect(signal.onabort).toBeCalledWith(event);
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jest.clearAllMocks();
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signal.dispatchEvent("unknown", event);
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expect(unusedHandler).not.toBeCalled();
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expect(handler).not.toBeCalled();
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expect(signal.onabort).not.toBeCalled();
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});
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it("should implement throwIfAborted", function () {
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const controller = new AbortController();
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const signal = controller.signal;
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expect(() => signal.throwIfAborted()).not.toThrowError();
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controller.abort();
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expect(() => signal.throwIfAborted()).toThrowError(new Error("AbortError"));
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});
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});
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describe("Static methods", () => {
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jest.useFakeTimers();
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jest.spyOn(global, "setTimeout");
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it("should implement abort", function () {
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const signal = AbortSignal.abort();
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expect(signal.aborted).toBe(true);
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expect(signal.reason).toEqual(new Error("AbortError"));
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});
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it("should implement timeout", function () {
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const signal = AbortSignal.timeout(1000);
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expect(setTimeout).toHaveBeenCalledTimes(1);
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expect(setTimeout).toHaveBeenLastCalledWith(expect.any(Function), 1000);
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expect(signal.aborted).toBe(false);
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expect(signal.reason).toBeUndefined();
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jest.runAllTimers();
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expect(signal.aborted).toBe(true);
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expect(signal.reason).toEqual(new Error("TimeoutError"));
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});
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});
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