import {
    mmyyDateFormatValidation,
} from './mmyy-date-format.validation';

describe('mmyyDateFormatValidation', () => {
    const runMmyyDateFormatValidTest = ({
        dateValue,
        expectedToBeValid,
    }: {
        dateValue: string,
        expectedToBeValid: boolean,
    }) => {
        test(`Expect ${dateValue} to be ${
            expectedToBeValid ? 'valid' : 'invalid'
        }`, () => {
            const result = mmyyDateFormatValidation(dateValue);
            if (expectedToBeValid) {
                expect(result).toBeNull();
            } else {
                expect(result.mmyyDateFormatValidation).toBe(true);
            }
        });
    };

    const invalidDateValues = [
        `1020`,
        `09-20`,
        `10 20`,
        `1/20`,
        `13/20`,
        `21/20`,
        `-1/20`,
    ];
    invalidDateValues
        .forEach((dateValue) => runMmyyDateFormatValidTest({
            dateValue,
            expectedToBeValid: false,
        }));

    const validDateValues = [
        `10/20`,
        `12/20`,
        `01/20`,
        null,
    ];
    validDateValues
        .forEach((dateValue) => runMmyyDateFormatValidTest({
            dateValue,
            expectedToBeValid: true,
        }));
});