tdd/index.js at master · sont85/tdd · GitHub

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var doubler = function(a, b) {
	if (typeof a === "function") {
    return a() + a() + b() + b();
  } else if (typeof a === "object") {
  	return a.x1 + a.x1 + a.x2 + a.x2
  } else {
  	return a + a + b + b
  }
}
console.assert(doubler(4,2) ===12);
console.assert(doubler(1,3) ===8);
console.assert(doubler(-1,3) ===4);

console.assert(doubler("a", "b") === "aabb");
console.assert(doubler("coding", "rocks") === "codingcodingrocksrocks");


function m3() { return 3; }
function m4() { return 4; }
function m2() { return 2; }
function m1() { return 1; }

console.assert(doubler(m4, m2) === 12);
console.assert(doubler(m1, m3) === 8);


function m3() { return 3; }
function m4() { return 4; }
function m2() { return 2; }
function m1() { return 1; }

console.assert(doubler(m4, m2) === 12);
console.assert(doubler(m1, m3) === 8);

function objectsEqual(a , b) {
	return a.z + a.t === b.t + b.z
 }

var a = { z: 42 , t: 7 }, b = { t: 7, z: 42 }

console.assert(objectsEqual(a, b));
console.assert(objectsEqual(b, a));

objectsEqual(doubler({x1: 1, x2: 4}), {x1: 2, x2: 8});
objectsEqual(doubler({x1: -4, x2: 0}), {x1: -8, x2: 0});