test('class constructor: on weekends, throws exceptions', () => {
        const alwaysSunday = () => SUNDAY;
        const verifier = makeVerifier([], alwaysSunday);
        expect(() => verifier.verify('anything')).toThrow("It's the weekend!");
    });

    test('class constructor: on weekdays, with no rules, passes', () => {
        const alwaysMonday = () => MONDAY;
        const verifier = makeVerifier([], alwaysMonday);
        const result = verifier.verify('anything');
        expect(result.length).toBe(0);
    });
});