CSC/ECE 517 Fall 2014/ch1a 19 mx

Watir

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Introduction

Watir(Web Application Test in Ruby), pronounced as 'water', is an automated test toolkit which uses the Ruby scripting language for automated tests to be developed and run against a web browser. <ref>http://www.httpwatch.com/rubywatir/</ref>It allows users to write tests that are easy to read and maintain, also simple and flexible. Watir was first developed by Bret Pettichord and Paul Rogers. It drives Internet Explorer, Firefox|Firefox, Google Chrome|Chrome, Opera (web browser)|Opera and Safari (web browser)|Safari, and is available as a RubyGems gem, <ref>http://en.wikipedia.org/wiki/Watir</ref> which is a free, open source Ruby library that can test web applications written in any language<ref>https://rubygems.org/gems/watir-classic</ref> and drive a web browser the same way an end user would. It clicks links, fills in forms, presses buttons. Watir can also check results, such as whether expected text appears on the page or not, or whether a control is enabled. <ref>http://watir.com/</ref>

Watir project consists of several smaller projects, including watir-classic, watir-webdriver and watirspec.

Watir-classic

Watir-classic is a Watir driver for automating only Internet Explorer on Windows.<ref>https://github.com/watir/watir-classic</ref>

Install the Gem:

gem install watir-classic

Watir-classic is able to work on Internet Explorer 8, 9 and 10<ref>http://rubydoc.info/gems/watir-classic/3.7.0/frames</ref>, and is supported by Ruby 1.8.7, 1.9.3 and 2.0.0.

Watir-webdriver

Watie-webdriver is an implementation built on WebDriver's Ruby bindings. It supports not only the Internet Explorer, but also namely Firefox, Chrome and Safari.<ref>https://github.com/watir/watir-webdriver</ref>

Install the Gem:<ref>https://rubygems.org/gems/watir-webdriver</ref>

gem install watir-webdriver

Example:

require 'watir-webdriver'
browser = Watir::Browser.new :firefox
browser.goto "http://google.com"
browser.text_field(:name => 'q').set("WebDriver rocks!")
browser.button(:name => 'btnG').click
puts browser.url
browser.close

Watirspec

Watirspec combines best features of Watir RSpec and Ruby for browser-based functional testing.<ref>https://rubygems.org/gems/watirspec</ref>

Install the Gem:

gem install watirspec

Overview

Web Application Testing

Web testing is the name given to software testing that focuses on web applications. Complete testing of a web-based system before going live can help address issues before the system is revealed to the public. Issues such as the security of the web application, the basic functionality of the site, its accessibility to handicapped users and fully able users, as well as readiness for expected traffic and number of users and the ability to survive a massive spike in user traffic, both of which are related to load testing.<ref>http://en.wikipedia.org/wiki/Web_testing</ref>

Checklist:<ref>http://www.softwaretestinghelp.com/web-application-testing/</ref>

• Functionality Testing： Test for all the links in web pages, database connection, forms used in the web pages for submitting or getting information from user, Cookie testing.

• Usability Testing: Test for navigation, contents and other user information for user help.

• Interface Testing: The main interfaces are: Web server and application server interface Application server and Database server interface. Check if all the interactions between these servers are executed properly.

• Compatibility Testing: Compatibility of your web site is very important testing aspect, including Browser compatibility, Operating system compatibility, Mobile browsing and Printing options.

• Performance Testing: Web application should sustain to heavy load. Web performance testing should include both Web Load Testing and Web Stress Testing.

Ruby

Ruby is a dynamic, reflective, object-oriented, general-purpose programming language. It was designed and developed in the mid-1990s by Yukihiro "Matz" Matsumoto in Japan. According to its authors, Ruby was influenced by Perl, Smalltalk, Eiffel, Ada, and Lisp. It supports multiple programming paradigms, including functional, object-oriented, and imperative. It also has a dynamic type system and automatic memory management.<ref>http://en.wikipedia.org/wiki/Ruby_(programming_language)</ref>

Several Features：<ref>http://www.starkdigital.net/ruby-programming</ref>

• Thoroughly object-oriented with inheritance, mixins and metaclasses
• Dynamic typing and duck typing
• Everything is an expression (even statements) and everything is executed imperatively (even declarations)
• Succinct and flexible syntax that minimizes syntactic noise and serves as a foundation for domain-specific languages
• Dynamic reflection and alteration of objects to facilitate metaprogramming
• Lexical closures, iterators and generators, with a unique block syntax
• Literal notation for arrays, hashes, regular expressions and symbols
• Embedding code in strings (interpolation)
• Four levels of variable scope (global, class, instance, and local) denoted by sigils or the lack thereof
• Strict boolean coercion rules (everything is true except false and nil)
• Built-in support for rational numbers, complex numbers and arbitrary-precision arithmetic
• Custom dispatch behavior (through method_missing and const_missing)
• Native threads and cooperative fibers (fibers are 1.9/YARV feature)
• Initial support for Unicode and multiple character encodings (no ICU support)
• Centralized package management through RubyGems
• Large standard library, including modules for YAML, JSON, XML, CGI, OpenSSL, HTTP, FTP, RSS, curses, zlib, and Tk

Installation

Installing Behind an Authenticating Proxy

Watir drivers are packaged as gems, Ruby libraries that can be installed over the internet. If installing behind an authenticating proxy, first set the HTTP_PROXY environment variable:

Windows:

set HTTP_PROXY=http://username:password@your.proxy.com:80

Linux:

export http_proxy=http://username:password@your.proxy.com:80

Install Ruby on Linux

Use your relevant package manager to update or install Ruby with the following at a terminal window:

sudo apt-get install ruby  # for Ubuntu / Debian users
sudo yum install ruby      # for Red Hat / Fedora users

Update RubyGems on Linux

Make sure you have the latest rubygems version 1.3.7 or above installed. Use your relevant package manager to install the latest version with the following at a terminal window:

sudo apt-get install rubygems # for Ubuntu / Debian users
sudo yum install rubygems  # for Red Hat / Fedora users

Install a HTML Inspector

To use Watir effectively, you’ll need to be able to browse through the structure of your application’s HTML pages. These tools help you do that.

• On Firefox, use Firebug
• On Internet Explorer, use the IE Developer Toolbar

Installing or Updating RubyGems

While updating RubyGems, or installing any of the gems, you can use the following additional flags:

--no-rdoc --no-ri

For example:

gem update --system --no-rdoc --no-ri
gem install watir --no-rdoc --no-ri

Make It Run

All examples are designed to work on the live Watir demo form: http://bit.ly/watir-example.

Run in .rb

First of all, let's see how to conduct the test in ruby on rails.<ref>http://watir.com/examples/</ref>

You can require Ruby Watir gem first via the -rubygems command line option or by using the RUBYOPT environment variable. You can also require it manually in your script:

require 'rubygems'

Including Watir gem to drive Internet Explorer on Windows

require 'watir'

Including Watir-WebDriver gem to drive Firefox/Chrome on Windows/Mac/Linux

require 'watir-webdriver'

Starting a new browser & and going to our site

browser = Watir::Browser.new
browser.goto 'http://bit.ly/watir-example'

Setting a text field

browser.text_field(:name => 'entry.0.single').set 'Watir'

Setting a multi-line text box

browser.text_field(:name => 'entry.1.single').set "I come here from Australia. \n The weather is great here."

Setting and clearing a radio button

browser.radio(:value => 'Watir').set
browser.radio(:value => 'Watir').clear

Setting and clearing check boxes

browser.checkbox(:value => 'Ruby').set
browser.checkbox(:value => 'Python').set
browser.checkbox(:value => 'Python').clear

Clearing, getting and selecting selection list values

browser.select_list(:name => 'entry.6.single').clear
puts browser.select_list(:name => 'entry.6.single').options
browser.select_list(:name => 'entry.6.single').select 'Chrome'

Clicking a button

browser.button(:name => 'submit').click

Checking for text in a page

puts browser.text.include? 'Your response has been recorded.'

Checking the title of a page

puts browser.title == 'Thanks!'

Run in Rspec

RSpec is a Behaviour-Driven Development tool for Ruby programmers. BDD is an approach to software development that combines Test-Driven Development, Domain Driven Design, and Acceptance Test-Driven Planning. RSpec helps you do the TDD part of that equation, focusing on the documentation and design aspects of TDD. The following code demonstrates using Watir and a basic RSpec example.<ref>http://watir.com/frameworks/</ref> More Info.

1. Install

gem install rspec

2. Example

rspec test_spec.rb

will execute the following rspec example:

test_spec.rb

require "rubygems"
require "rspec"
require "watir-webdriver"
 
describe "google.com" do
  let(:browser) { @browser ||= Watir::Browser.new :firefox } 
  before { browser.goto "http://google.com" } 
  after { browser.close }
 
  it "should search for watir" do
    browser.text_field(:name => "q").set "watir"
    browser.button.click 
    browser.div(:id => "resultStats").wait_until_present
    browser.title.should == "watir - Google Search"
  end
end

Run in Cucumber

Cucumber lets software development teams describe how software should behave in plain text. The text is written in a business-readable domain-specific language and serves as documentation, automated tests and development-aid – all rolled into one format.<ref>http://watir.com/frameworks/</ref> More Info.

1. Install

gem install cucumber

2. Example

cucumber features

will execute the following cucumber feature: features/example.feature

Feature: Search In order to use Google users must be able to search for content 
Scenario: Search for a term
Given I have entered "watir" into the query
When I click "search"
Then I should see some results

features/step_definitions/example_steps.rb

require "watir-webdriver"
require "rspec/expectations"
 
Given /^I have entered "([^"]*)" into the query$/ do |term|
  @browser ||= Watir::Browser.new :firefox
  @browser.goto "google.com"
  @browser.text_field(:name => "q").set term
end
 
When /^I click "([^"]*)"$/ do |button_name|
  @browser.button.click
end
 
Then /^I should see some results$/ do
  @browser.div(:id => "resultStats").wait_until_present
  @browser.div(:id => "resultStats").should exist 
  @browser.close
end

Comparison with Other Tools

There are some other framworks will do similar work as watir does, for example, Cucmber, Capybara and RSpec. But in comparison, they have different features and are usually used in conjecture.

Put simply, Watir is a browser driver. Lightweight and simple to use, Watir excels at automating modern browsers. Built in Ruby, it does not have an IDE of it's own, but it works well with other testing frameworks and solutions in the Ruby ecosystem.

Cucumber lets software development teams describe how software should behave in plain english, it is designed to allow you to execute automated integration tests. It is a tool for implementing Behavior Driven Development.It can work nicely in conjecture with Capybara and RSpec.

Capybara is a library written in the Ruby programming language which makes it easy to simulate how a user interacts with your application. It can talk with many different drivers which execute tests through the same clean and simple interface, including Selenium, Webkit or pure Ruby drivers.<ref>http://jnicklas.github.io/capybara/</ref>

RSpec helps you do the TDD(Test-Driven Development) part of the whole development (combines Test-Driven Development, Domain Driven Design, and Acceptance Test-Driven Planning), focusing on the documentation and design aspects of TDD. A combination of RSpec and Watir makes really readable test scripts.<ref>http://www.ibmwcs.com/2010/08/testing-with-rspec-cucumber-selenium.html</ref>

Reference

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