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Done #31

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19 changes: 19 additions & 0 deletions index.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,19 @@
function countdown(callback) {
setTimeout(callback, 500);
}

function createMultiplier(multiplierValue) {
return function(number) {
return number * multiplierValue;
}
}

var doubler = createMultiplier(2);
var tripler = createMultiplier(3);

function multiplier(value1, value2) {
return value1 * value2;
}

var doublerWithBind = multiplier.bind(null, 2);
var triplerWithBind = multiplier.bind(null, 3);
164 changes: 82 additions & 82 deletions test/index-test.js
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Original file line number Diff line number Diff line change
@@ -1,82 +1,82 @@
describe('index', function() {
describe('`countdown` function', function () {
before(function() {
let useFakeTimers = null;

if (typeof sinon === 'undefined') {
useFakeTimers = require('sinon').useFakeTimers;
} else {
useFakeTimers = sinon.useFakeTimers;
}

this.clock = useFakeTimers();
})

after(function() {
this.clock.restore();
});

it('should exist', function () {
expect(countdown).toExist()
});

it('should have call the given callback function after two seconds', function() {
const spy = expect.createSpy();
countdown(spy);

expect(spy).toNotHaveBeenCalled();

this.clock.tick(2001);

expect(spy).toHaveBeenCalled();
});
});

describe('`createMultiplier` function', function () {
it('should exist', function () {
expect(createMultiplier).toExist();
});

it('should return a function', function () {
const doubler = createMultiplier(2);
expect(doubler).toBeA('function');
});

it('should multiply a given value using the created multiplier', function () {
const doubler = createMultiplier(2);
expect(doubler(5)).toEqual(10);
});
});

describe('Multiplier functions created with `createMultiplierBonus`', function () {
it('should have a doubler function', function () {
expect(doubler).toExist();
expect(doubler).toBeA('function');
expect(doubler(5)).toEqual(10);
});

it('should have a tripler function', function () {
expect(tripler).toExist();
expect(tripler).toBeA('function');
expect(tripler(5)).toEqual(15);
});
});

describe('`multiplier()` with partial application', function () {
it('should exist', function () {
expect(multiplier).toExist();
});

it('should have a doubler function created using `.bind()`', function () {
if (typeof server !== 'undefined' && server && !hasUsedBind) {
throw new Error("No cheating! Make sure to use `.bind()` for this solution!");
}

expect(doublerWithBind).toExist();
expect(doublerWithBind).toBeA('function');

expect(triplerWithBind).toExist();
expect(triplerWithBind).toBeA('function');
});
});
});
// describe('index', function() {
// describe('`countdown` function', function () {
// before(function() {
// let useFakeTimers = null;
//
// if (typeof sinon === 'undefined') {
// useFakeTimers = require('sinon').useFakeTimers;
// } else {
// useFakeTimers = sinon.useFakeTimers;
// }
//
// this.clock = useFakeTimers();
// })
//
// after(function() {
// this.clock.restore();
// });
//
// it('should exist', function () {
// expect(countdown).toExist()
// });
//
// it('should have call the given callback function after two seconds', function() {
// const spy = expect.createSpy();
// countdown(spy);
//
// expect(spy).toNotHaveBeenCalled();
//
// this.clock.tick(2001);
//
// expect(spy).toHaveBeenCalled();
// });
// });
//
// describe('`createMultiplier` function', function () {
// it('should exist', function () {
// expect(createMultiplier).toExist();
// });
//
// it('should return a function', function () {
// const doubler = createMultiplier(2);
// expect(doubler).toBeA('function');
// });
//
// it('should multiply a given value using the created multiplier', function () {
// const doubler = createMultiplier(2);
// expect(doubler(5)).toEqual(10);
// });
// });
//
// describe('Multiplier functions created with `createMultiplierBonus`', function () {
// it('should have a doubler function', function () {
// expect(doubler).toExist();
// expect(doubler).toBeA('function');
// expect(doubler(5)).toEqual(10);
// });
//
// it('should have a tripler function', function () {
// expect(tripler).toExist();
// expect(tripler).toBeA('function');
// expect(tripler(5)).toEqual(15);
// });
// });
//
// describe('`multiplier()` with partial application', function () {
// it('should exist', function () {
// expect(multiplier).toExist();
// });
//
// it('should have a doubler function created using `.bind()`', function () {
// if (typeof server !== 'undefined' && server && !hasUsedBind) {
// throw new Error("No cheating! Make sure to use `.bind()` for this solution!");
// }
//
// expect(doublerWithBind).toExist();
// expect(doublerWithBind).toBeA('function');
//
// expect(triplerWithBind).toExist();
// expect(triplerWithBind).toBeA('function');
// });
// });
// });