secsan/test/shuffle.test.ts

import { expect, test } from 'vitest';
import { buildNameMap } from '../src/shuffle';

test('shuffle does not include matching pairs', () => {
    const names = Array(10)
        .fill(null)
        .map((_, i) => `Test ${i}`);
    for (let i = 0; i < 50000; i++) {
        const shuffled = buildNameMap(names);
        for (const pair of shuffled) {
            expect(pair[0]).not.toBe(pair[1]);
        }
    }
});