forked from jestjs/jest
/
shard.test.ts
86 lines (69 loc) · 2.06 KB
/
shard.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 * as path from 'path';
import runJest from '../runJest';
test('--shard=1/1', () => {
const result = runJest('shard', ['--shard=1/1', '--listTests']);
const paths = result.stdout
.split('\n')
.filter(Boolean)
.map(file => path.basename(file))
.sort();
expect(paths).toEqual(['1.test.js', '2.test.js', '3.test.js']);
});
test('--shard=1/2', () => {
const result = runJest('shard', ['--shard=1/2', '--listTests']);
const paths = result.stdout
.split('\n')
.filter(Boolean)
.map(file => path.basename(file))
.sort();
expect(paths).toEqual(['2.test.js', '3.test.js']);
});
test('--shard=2/2', () => {
const result = runJest('shard', ['--shard=2/2', '--listTests']);
const paths = result.stdout
.split('\n')
.filter(Boolean)
.map(file => path.basename(file));
expect(paths).toEqual(['1.test.js']);
});
test('--shard=4/4', () => {
const result = runJest('shard', ['--shard=4/4', '--listTests']);
const paths = result.stdout
.split('\n')
.filter(Boolean)
.map(file => path.basename(file));
// project only has 3 files
// shards > 3 are empty
expect(paths).toEqual([]);
});
test('--shard=1/2 custom non-sharding test sequencer', () => {
const result = runJest('shard', [
'--shard=1/2',
'--listTests',
'--testSequencer=./no-sharding-test-sequencer.js',
]);
expect(result).toMatchObject({
failed: true,
stderr: expect.stringMatching(
/Shard (.*) requested, but test sequencer (.*) in (.*) has no shard method./,
),
});
});
test('--shard=1/2 custom sharding test sequencer', () => {
const result = runJest('shard', [
'--shard=1/2',
'--listTests',
'--testSequencer=./sharding-test-sequencer.js',
]);
const paths = result.stdout
.split('\n')
.filter(Boolean)
.map(file => path.basename(file));
expect(paths).toEqual(['3.test.js']);
});