import moize from '../src';

type Arg = {
    one: number;
    two: {
        deep: number;
    };
};

const method = jest.fn(function ({ one, two }: Arg) {
    return [one, two.deep];
});

const memoized = moize.shallow(method);

describe('moize.shallow', () => {
    it('should memoized based on the shallow values', () => {
        const two = { deep: 2 };

        const resultA = memoized({ one: 1, two });
        const resultB = memoized({ one: 1, two });

        expect(resultA).toEqual([1, 2]);
        expect(resultA).toBe(resultB);

        expect(method).toHaveBeenCalledTimes(1);

        const resultC = memoized({ one: 1, two: { ...two } });

        expect(resultC).toEqual(resultA);
        expect(resultC).not.toBe(resultA);

        expect(method).toHaveBeenCalledTimes(2);
    });
});