test.js

const {Builder, By, Key, until, assert} = require('selenium-webdriver');

let driver = new Builder()
    .forBrowser('chrome')
    .build();

driver.get('http://mujomusic.net/WDV321/Selenium/index.html')
  .then(_ =>
driver.getTitle().then(function(title) {
var expectedTitle = "Selenium Form Test";
var actualTitle = driver.getTitle();
  if(expectedTitle === title){
      console.log("Title is Correct");
  }
  else{
      console.log("Title is Wrong");
  }
}))
  .then(_ =>
driver.findElement(By.id('quantityInput')).sendKeys('-5', Key.TAB))
  .then(_ =>
driver.findElement(By.name('submit')).click())
  .then(_ =>
driver.findElement(By.id('quantityInput')).clear())
  .then(_ =>
driver.findElement(By.id('quantityInput')).sendKeys('0', Key.TAB))
  .then(_ =>
driver.findElement(By.name('submit')).click())
  .then(_ =>
driver.findElement(By.id('quantityInput')).clear())
  .then(_ =>
driver.findElement(By.id('quantityInput')).sendKeys('56', Key.TAB))
  .then(_ =>
driver.findElement(By.name('submit')).click())
  .then(_ =>
driver.findElement(By.id('quantityInput')).clear())
  .then(_ =>
driver.findElement(By.id('quantityInput')).sendKeys('100', Key.TAB))
  .then(_ =>
driver.findElement(By.name('submit')).click())
  .then(_ =>
driver.findElement(By.id('quantityInput')).clear())
  .then(_ =>
driver.findElement(By.id('quantityInput')).sendKeys('106', Key.TAB))
  .then(_ =>
driver.findElement(By.name('submit')).click())