40 lines
1.0 KiB
JavaScript
40 lines
1.0 KiB
JavaScript
const Sequencer = require('@jest/test-sequencer').default;
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const sortByPath = (test1, test2) => {
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if (test1.path < test2.path) {
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return -1;
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}
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if (test1.path > test2.path) {
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return 1;
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}
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return 0;
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};
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class ParallelCISequencer extends Sequencer {
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constructor() {
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super();
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this.ciNodeIndex = Number(process.env.CI_NODE_INDEX || '1');
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this.ciNodeTotal = Number(process.env.CI_NODE_TOTAL || '1');
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}
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sort(tests) {
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const sortedTests = [...tests].sort(sortByPath);
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const testsForThisRunner = this.distributeAcrossCINodes(sortedTests);
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console.log(`CI_NODE_INDEX: ${this.ciNodeIndex}`);
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console.log(`CI_NODE_TOTAL: ${this.ciNodeTotal}`);
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console.log(`Total number of tests: ${tests.length}`);
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console.log(`Total number of tests for this runner: ${testsForThisRunner.length}`);
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return testsForThisRunner;
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}
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distributeAcrossCINodes(tests) {
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return tests.filter((test, index) => {
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return index % this.ciNodeTotal === this.ciNodeIndex - 1;
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});
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}
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}
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module.exports = ParallelCISequencer;
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