To refactor, or not to refactor

isLeapYear.js

// Refactor step 7, still don't like it, f*ck it, just use native function
function isLeapYear(year) {
         return new Date(year, 2-1, 29).getDate() == 29;
}

jasmineFake.js

// Create a Jasmine fake
function describe(testName, tests) {
    console.clear();
    console.info('Name: %s - Start: %s', testName, new Date);
         expect.nr=0;
         expect.errors=0;
         tests();
    if (expect.errors == 0) console.info('All %s tests OK', expect.nr);
    else console.error('%s of %s tests failed', expect.errors, expect.nr);
}
function expect(x) {
    return {
        toBe: function(y) {
            if (x===y)  console.info("- %s: OK", expect.nr++);
            else console.error("- %s: Error", expect.nr++), expect.errors++;
        }
    };
}

unitTests.js

// Unit test
function unitTests() {
    describe("leapYear tests", function() {
        expect(isLeapYear(1900)).toBe(false);
        expect(isLeapYear(1971)).toBe(false);
        expect(isLeapYear(1972)).toBe(true);
        expect(isLeapYear(2000)).toBe(true);
        expect(isLeapYear(2003)).toBe(false);
    });
}