mirror of https://github.com/webpack/webpack.git
55 lines
1.9 KiB
JavaScript
55 lines
1.9 KiB
JavaScript
function abortable(fn) {
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return new Promise((resolve) => {
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const timeoutId = setTimeout(() => {
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fn = undefined;
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resolve('Promise resolved after delay');
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clearTimeout(timeoutId);
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}, 1000);
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return fn();
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});
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}
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it("should set fetchPriority", async () => {
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abortable(() => import(/* webpackFetchPriority: "high" */ "./a"));
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expect(document.head._children).toHaveLength(4);
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const script1 = document.head._children[2];
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expect(script1._attributes.fetchpriority).toBe("high");
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abortable(() => import(/* webpackFetchPriority: "low" */ "./b"));
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expect(document.head._children).toHaveLength(5);
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const script2 = document.head._children[4];
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expect(script2._attributes.fetchpriority).toBe("low");
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abortable(() => import(/* webpackFetchPriority: "low" */ "./c"));
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expect(document.head._children).toHaveLength(6);
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const script3 = document.head._children[5];
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expect(script3._attributes.fetchpriority).toBe("low");
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abortable(() => import(/* webpackPrefetch: 20, webpackFetchPriority: "auto" */ "./c"));
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abortable(() => import("./d"))
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expect(document.head._children).toHaveLength(7);
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const script4 = document.head._children[6];
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expect(script4._attributes.fetchpriority).toBeUndefined();
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abortable(() => import(/* webpackPrefetch: -20 */ "./d3"));
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expect(document.head._children).toHaveLength(8);
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const script5 = document.head._children[7];
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expect(script5._attributes.fetchpriority).toBeUndefined();
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const condition = true;
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if (!condition) {
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abortable( () => import(/* webpackFetchPriority: "high", webpackChunkName: "one" */ "./e"));
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expect(document.head._children).toHaveLength(9);
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const script6 = document.head._children[8];
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expect(script6._attributes.fetchpriority).toBe("high");
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} else {
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abortable(() => import(/* webpackFetchPriority: "low", webpackChunkName: "two" */ "./e"));
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expect(document.head._children).toHaveLength(9);
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const script6 = document.head._children[8];
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expect(script6._attributes.fetchpriority).toBe("low");
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}
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});
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