testSequencer.js

const Sequencer = require('@jest/test-sequencer').default;

class CustomSequencer extends Sequencer {
	sort(tests) {
		// Test structure information
		// https://github.com/facebook/jest/blob/6b8b1404a1d9254e7d5d90a8934087a9c9899dab/packages/jest-runner/src/types.ts#L17-L21
		const copyTests = Array.from(tests);
		return copyTests.sort((testA, testB) => {
			// TODO: Remove @jest/test-sequencer
			// `auth-unit-test` currently causes intended side-effects related to `Credentials`
			// which is causing other tests to fail. As a temporary change, we are ordering the tests
			// alphabetically but putting `auth-unit-test` at the end to ensure no other tests
			// are affected.
			if (testA.path.includes('auth-unit-test.ts')) {
				return 1;
			} else if (testB.path.includes('auth-unit-test.ts')) {
				return -1;
			}
			return testA.path > testB.path ? 1 : -1;
		});
	}
}

module.exports = CustomSequencer;