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https://github.com/10h30/odin-javascript-exercises.git
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# Exercise 08 - Calculator
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The goal for this exercise is to create a calculator that does the following:
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add, subtract, get the sum, multiply, get the power, and find the factorial
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In order to do this please fill out each function with your solution. Make sure to return the value so you can test it in Jest! To see the expected value
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take a look at the spec file that houses the Jest test cases.
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In order to do this please fill out each function with your solution. Make sure to return the value so you can test it in Jasmine! To see the expected value
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take a look at the spec file that houses the Jasmine test cases.
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+15
-15
@@ -1,26 +1,26 @@
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const add = function() {
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function add () {
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};
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}
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const subtract = function() {
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function subtract () {
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};
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}
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const sum = function() {
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function sum () {
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};
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}
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const multiply = function() {
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};;
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const power = function() {
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function multiply () {
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};
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}
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const factorial = function() {
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function power() {
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};
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}
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function factorial() {
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}
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module.exports = {
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add,
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@@ -28,5 +28,5 @@ module.exports = {
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sum,
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multiply,
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power,
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factorial
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factorial,
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};
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@@ -1,56 +1,56 @@
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const calculator = require('./calculator');
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const calculator = require ('./calculator.js');
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describe('add', function() {
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it('adds 0 and 0', function() {
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expect(calculator.add(0,0)).toEqual(0);
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});
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test.skip('adds 2 and 2', () => {
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expect(calculator.add(2,2)).toBe(4);
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xit('adds 2 and 2', function() {
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expect(calculator.add(2,2)).toEqual(4);
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});
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test.skip('adds positive numbers', () => {
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expect(calculator.add(2,6)).toBe(8);
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xit('adds positive numbers', function() {
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expect(calculator.add(2,6)).toEqual(8);
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});
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});
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describe('subtract', () => {
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test.skip('subtracts numbers', () => {
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expect(calculator.subtract(10,4)).toBe(6);
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describe('subtract', function() {
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xit('subtracts numbers', function() {
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expect(calculator.subtract(10,4)).toEqual(6);
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});
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});
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describe('sum', () => {
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test.skip('computes the sum of an empty array', () => {
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expect(calculator.sum([])).toBe(0);
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describe('sum', function() {
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xit('computes the sum of an empty array', function() {
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expect(calculator.sum([])).toEqual(0);
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});
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test.skip('computes the sum of an array of one number', () => {
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expect(calculator.sum([7])).toBe(7);
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xit('computes the sum of an array of one number', function() {
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expect(calculator.sum([7])).toEqual(7);
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});
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test.skip('computes the sum of an array of two numbers', () => {
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expect(calculator.sum([7,11])).toBe(18);
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xit('computes the sum of an array of two numbers', function() {
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expect(calculator.sum([7,11])).toEqual(18);
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});
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test.skip('computes the sum of an array of many numbers', () => {
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expect(calculator.sum([1,3,5,7,9])).toBe(25);
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xit('computes the sum of an array of many numbers', function() {
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expect(calculator.sum([1,3,5,7,9])).toEqual(25);
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});
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});
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describe('multiply', () => {
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test.skip('multiplies two numbers', () => {
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expect(calculator.multiply([2,4])).toBe(8);
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describe('multiply', function() {
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xit('multiplies two numbers', function() {
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expect(calculator.multiply([2,4])).toEqual(8);
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});
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test.skip('multiplies several numbers', () => {
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expect(calculator.multiply([2,4,6,8,10,12,14])).toBe(645120);
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xit('multiplies several numbers', function() {
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expect(calculator.multiply([2,4,6,8,10,12,14])).toEqual(645120);
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});
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});
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describe('power', () => {
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test.skip('raises one number to the power of another number', () => {
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expect(calculator.power(4,3)).toBe(64); // 4 to third power is 64
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describe('power', function() {
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xit('raises one number to the power of another number', function() {
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expect(calculator.power(4,3)).toEqual(64); // 4 to third power is 64
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});
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});
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