forked from Ivasoft/mattermost-mobile
fab4c1a216
* Detox/E2E: Add custom test sequencer * Fix lint * Added explicit dev dependency on sequencer
32 lines
1.1 KiB
JavaScript
32 lines
1.1 KiB
JavaScript
// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
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// See LICENSE.txt for license information.
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const Sequencer = require('@jest/test-sequencer').default;
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class CustomSequencer extends Sequencer {
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/**
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* Select tests for shard requested via --shard=shardIndex/shardCount
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* Sharding is applied before sorting
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*/
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shard(tests, {shardIndex, shardCount}) {
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const shardSize = Math.ceil(tests.length / shardCount);
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const shardStart = shardSize * (shardIndex - 1);
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const shardEnd = shardSize * shardIndex;
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return [...tests].sort((a, b) => (a.path > b.path ? 1 : -1)).slice(shardStart, shardEnd);
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}
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/**
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* Sort test to determine order of execution
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* Sorting is applied after sharding
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*/
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sort(tests) {
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// Test structure information
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// https://github.com/facebook/jest/blob/6b8b1404a1d9254e7d5d90a8934087a9c9899dab/packages/jest-runner/src/types.ts#L17-L21
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const copyTests = Array.from(tests);
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return copyTests.sort((testA, testB) => (testA.path > testB.path ? 1 : -1));
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}
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}
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module.exports = CustomSequencer;
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