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cache.js
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cache.js
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"use strict";
const path = require("path");
const { promises: fs } = require("fs");
const rimraf = require("rimraf");
const { default: stripAnsi } = require("../../../vendors/strip-ansi.js");
const runPrettier = require("../run-prettier.js");
function resolveDir(dir) {
return path.join(__dirname, "..", dir);
}
describe("--cache option", () => {
const dir = resolveDir("cli/cache");
const defaultCacheFile = path.join(
dir,
"node_modules/.cache/prettier/.prettier-cache"
);
let contentA;
let contentB;
beforeAll(async () => {
contentA = await fs.readFile(path.join(dir, "a.js"), "utf8");
contentB = await fs.readFile(path.join(dir, "b.js"), "utf8");
});
afterEach(async () => {
rimraf.sync(path.join(dir, "node_modules"));
await fs.writeFile(path.join(dir, "a.js"), contentA);
await fs.writeFile(path.join(dir, "b.js"), contentB);
});
it("creates default cache file named `node_modules/.cache/prettier/.prettier-cache`", async () => {
await expect(fs.stat(defaultCacheFile)).rejects.toHaveProperty(
"code",
"ENOENT"
);
await runPrettier(dir, ["--cache", "."]);
await expect(fs.stat(defaultCacheFile)).resolves.not.toThrowError();
});
it("does'nt format when cache is available", async () => {
const { stdout: firstStdout } = await runPrettier(dir, [
"--cache",
"--write",
".",
]);
expect(stripAnsi(firstStdout).split("\n").filter(Boolean)).toEqual(
expect.arrayContaining([
expect.stringMatching(/^a\.js .+ms$/),
expect.stringMatching(/^b\.js .+ms$/),
])
);
const { stdout: secondStdout } = await runPrettier(dir, [
"--cache",
"--write",
".",
]);
expect(stripAnsi(secondStdout).split("\n").filter(Boolean)).toEqual(
expect.arrayContaining([
expect.stringMatching(/^a\.js .+ms \(cached\)$/),
expect.stringMatching(/^b\.js .+ms \(cached\)$/),
])
);
});
it("re-formats when a file has been updated.", async () => {
const { stdout: firstStdout } = await runPrettier(dir, [
"--cache",
"--write",
".",
]);
expect(stripAnsi(firstStdout).split("\n").filter(Boolean)).toEqual(
expect.arrayContaining([
expect.stringMatching(/^a\.js .+ms$/),
expect.stringMatching(/^b\.js .+ms$/),
])
);
// Update `a.js`
await fs.writeFile(path.join(dir, "a.js"), "const a = `a`;");
const { stdout: secondStdout } = await runPrettier(dir, [
"--cache",
"--write",
".",
]);
expect(stripAnsi(secondStdout).split("\n").filter(Boolean)).toEqual(
// the cache of `b.js` is only available.
expect.arrayContaining([
expect.stringMatching(/^a\.js .+ms$/),
expect.stringMatching(/^b\.js .+ms \(cached\)$/),
])
);
});
it("re-formats when options has been updated.", async () => {
const { stdout: firstStdout } = await runPrettier(dir, [
"--cache",
"--write",
".",
]);
expect(stripAnsi(firstStdout).split("\n").filter(Boolean)).toEqual(
expect.arrayContaining([
expect.stringMatching(/^a\.js .+ms$/),
expect.stringMatching(/^b\.js .+ms$/),
])
);
const { stdout: secondStdout } = await runPrettier(dir, [
"--cache",
"--write",
"--trailing-comma",
"all",
".",
]);
expect(stripAnsi(secondStdout).split("\n").filter(Boolean)).toEqual(
expect.arrayContaining([
expect.stringMatching(/^a\.js .+ms$/),
expect.stringMatching(/^b\.js .+ms$/),
])
);
});
it("removes cache file when run Prettier without `--cache` option", async () => {
await runPrettier(dir, ["--cache", "--write", "."]);
await expect(fs.stat(defaultCacheFile)).resolves.not.toThrowError();
await runPrettier(dir, ["--write", "."]);
await expect(fs.stat(defaultCacheFile)).rejects.toThrowError();
});
});