Add return value that adds variables together for the add function. Add return value that subtracts variables for the subtract function.

rhawkenson · rhawkenson · commit 726ff8bb8ba1 · 2020-07-21T15:52:52.000-05:00
diff --git a/calculator/calculator.js b/calculator/calculator.js
@@ -1,13 +1,17 @@
-function add () {
-	
+function add (num1, num2) {
+	return num1 + num2;
 }
 
-function subtract () {
-	
+function subtract (num1, num2) {
+	return num1 - num2;
 }
 
-function sum () {
-	
+function sum (arr) {
+	let total = 0;
+	for (let i=0; i<arr.length-1; i++){
+		total += arr[i];
+		return total;
+	} 
 }
 
 function multiply () {
diff --git a/calculator/calculator.spec.js b/calculator/calculator.spec.js
@@ -5,35 +5,35 @@ describe('add', function() {
 		expect(calculator.add(0,0)).toEqual(0);
 	});
 
-	xit('adds 2 and 2', function() {
+	it('adds 2 and 2', function() {
 		expect(calculator.add(2,2)).toEqual(4);
 	});
 
-	xit('adds positive numbers', function() {
+	it('adds positive numbers', function() {
 		expect(calculator.add(2,6)).toEqual(8);
 	});
 });
 
 describe('subtract', function() {
-	xit('subtracts numbers', function() {
+	it('subtracts numbers', function() {
 		expect(calculator.subtract(10,4)).toEqual(6);
 	});
 });
 
 describe('sum', function() {
-	xit('computes the sum of an empty array', function() {
+	it('computes the sum of an empty array', function() {
 		expect(calculator.sum([])).toEqual(0);
 	});
 
-	xit('computes the sum of an array of one number', function() {
+	it('computes the sum of an array of one number', function() {
 		expect(calculator.sum([7])).toEqual(7);
 	});
 
-	xit('computes the sum of an array of two numbers', function() {
+	it('computes the sum of an array of two numbers', function() {
 		expect(calculator.sum([7,11])).toEqual(18);
 	});
 
-	xit('computes the sum of an array of many numbers', function() {
+	it('computes the sum of an array of many numbers', function() {
 		expect(calculator.sum([1,3,5,7,9])).toEqual(25);
 	});
 });
