@stryker-mutator/core/dist/test/unit/child-proxy/id-generator.spec.js

The extendable JavaScript mutation testing framework

import { expect } from 'chai';
import { IdGenerator } from '../../../src/child-proxy/id-generator.js';
describe(IdGenerator.name, () => {
    let idGenerator;
    beforeEach(() => {
        idGenerator = new IdGenerator();
    });
    it('should return 0 on first call to `next`', async () => {
        const workerId = idGenerator.next();
        expect(workerId).eq(0);
    });
    it('should increment `workerId` on calling `next`', async () => {
        const workerId = idGenerator.next();
        const nextWorkerId = idGenerator.next();
        expect(nextWorkerId - workerId).eq(1);
    });
});
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