63 lines
2.2 KiB
TypeScript
63 lines
2.2 KiB
TypeScript
import { describe, expect, test } from "bun:test";
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import {
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injectPrecacheManifest,
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PRECACHE_PLACEHOLDER,
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precachePathsFromOutputs,
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VERSION_PLACEHOLDER,
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} from "../src/pwa/precache";
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describe("precachePathsFromOutputs", () => {
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test("maps index.html to /, prefixes assets, drops sourcemaps", () => {
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expect(
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precachePathsFromOutputs(
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["index.html", "chunk-abc123.js", "chunk-abc123.js.map", "./index-def456.css"],
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["inference.worker.js"],
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),
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).toEqual(["./", "chunk-abc123.js", "index-def456.css", "inference.worker.js"]);
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});
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test("deduplicates and sorts", () => {
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expect(precachePathsFromOutputs(["a.js", "a.js"], ["a.js", "./"])).toEqual([
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"./",
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"a.js",
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]);
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});
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});
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describe("injectPrecacheManifest", () => {
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const swSource = `const PRECACHE = JSON.parse(${PRECACHE_PLACEHOLDER});\nconst CACHE = "shell-${VERSION_PLACEHOLDER}";`;
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test("injects a JSON-parseable asset list and the version", () => {
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const result = injectPrecacheManifest(swSource, ["/", "/chunk-abc.js"], "v1abc");
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expect(result).toContain('"shell-v1abc"');
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expect(result).not.toContain("__PRECACHE_MANIFEST__");
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// The injected literal must survive a JS string round-trip back to the array.
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const literal = /JSON\.parse\((".*")\)/.exec(result)?.[1];
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expect(literal).toBeDefined();
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expect(JSON.parse(JSON.parse(literal!))).toEqual(["/", "/chunk-abc.js"]);
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});
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test("throws if a placeholder is missing (bundler mangled the source)", () => {
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expect(() => injectPrecacheManifest("const x = 1;", [], "v1")).toThrow(
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/missing/,
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);
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expect(() =>
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injectPrecacheManifest(`JSON.parse(${PRECACHE_PLACEHOLDER})`, [], "v1"),
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).toThrow(/missing/);
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});
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test("rejects versions that would break the cache name", () => {
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expect(() => injectPrecacheManifest(swSource, [], "bad version!")).toThrow(
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/Invalid cache version/,
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);
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});
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test("the real sw.ts source contains both placeholders", async () => {
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const source = await Bun.file(
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new URL("../src/pwa/sw.ts", import.meta.url).pathname,
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).text();
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expect(source).toContain(PRECACHE_PLACEHOLDER);
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expect(source).toContain(VERSION_PLACEHOLDER);
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});
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});
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