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hasteMapSize.test.ts
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hasteMapSize.test.ts
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/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
import {tmpdir} from 'os';
import * as path from 'path';
import {realpathSync} from 'graceful-fs';
import HasteMap from 'jest-haste-map';
import {cleanup, writeFiles} from '../Utils';
const DIR = path.resolve(realpathSync.native(tmpdir()), 'haste_map_size');
beforeEach(() => {
cleanup(DIR);
writeFiles(DIR, {
'file.js': '"abc"',
});
});
afterEach(() => cleanup(DIR));
const options = {
extensions: ['js'],
forceNodeFilesystemAPI: true,
id: 'tmp',
ignorePattern: / ^/,
maxWorkers: 2,
mocksPattern: '',
platforms: [],
retainAllFiles: true,
rootDir: DIR,
roots: [DIR],
useWatchman: false,
watch: false,
};
test('reports the correct file size', async () => {
const hasteMap = await HasteMap.create(options);
const hasteFS = (await hasteMap.build()).hasteFS;
expect(hasteFS.getSize(path.join(DIR, 'file.js'))).toBe(5);
});
test('updates the file size when a file changes', async () => {
const hasteMap = await HasteMap.create({...options, watch: true});
await hasteMap.build();
writeFiles(DIR, {
'file.js': '"asdf"',
});
const {hasteFS} = await new Promise(resolve =>
hasteMap.once('change', resolve),
);
hasteMap.end();
expect(hasteFS.getSize(path.join(DIR, 'file.js'))).toBe(6);
});