import moize from '../src';

const method = jest.fn(function (one: string, two: string, three: string) {
    return { one, two, three };
});

function transformer(args: string[]) {
    const newKey: string[] = [];

    let index = args.length;

    while (--index) {
        newKey[index - 1] = args[index];
    }

    return newKey;
}

const memoized = moize.transformArgs(transformer)(method);

const foo = 'foo';
const bar = 'bar';
const baz = 'baz';

describe('moize.transformArgs', () => {
    it('limits the args memoized by', () => {
        const resultA = memoized(foo, bar, baz);
        const resultB = memoized(null, bar, baz);

        expect(resultA).toEqual({ one: foo, two: bar, three: baz });
        expect(resultB).toBe(resultA);

        expect(method).toHaveBeenCalledTimes(1);
    });
});