61 lines
1.7 KiB
TypeScript
61 lines
1.7 KiB
TypeScript
// @vitest-environment happy-dom
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import { describe, expect, it, vi } from "vitest";
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import { waitForImages } from "../src/index.js";
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function createPendingImage() {
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const image = document.createElement("img");
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Object.defineProperty(image, "complete", {
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configurable: true,
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get: () => false
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});
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return image;
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}
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describe("文档图片就绪等待", () => {
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it("图片正常加载后立即完成", async () => {
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const image = createPendingImage();
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image.decode = vi.fn(() => new Promise(() => undefined));
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document.body.replaceChildren(image);
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const waiting = waitForImages(document, 1_000);
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image.dispatchEvent(new Event("load"));
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await expect(waiting).resolves.toEqual([undefined]);
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});
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it("decode 拒绝且图片已经失败时不会错过 error 状态", async () => {
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let complete = false;
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const image = document.createElement("img");
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Object.defineProperty(image, "complete", {
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configurable: true,
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get: () => complete
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});
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image.decode = vi.fn(async () => {
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complete = true;
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throw new Error("decode failed");
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});
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document.body.replaceChildren(image);
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await expect(waitForImages(document, 1_000)).resolves.toEqual([
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undefined
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]);
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});
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it("图片永不响应时由局部超时结束等待", async () => {
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vi.useFakeTimers();
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try {
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const image = createPendingImage();
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image.decode = vi.fn(() => new Promise(() => undefined));
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document.body.replaceChildren(image);
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const waiting = waitForImages(document, 25);
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await vi.advanceTimersByTimeAsync(25);
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await expect(waiting).resolves.toEqual([undefined]);
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} finally {
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vi.useRealTimers();
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}
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});
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});
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