Integrating Selenium testing infrastructure into Scala Project

Test Automation Using
Selenium
Swati
Email- swati@knoldus.com

History of The Selenium
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Selenium is invent by Jason Huggins
He developed a Javascript library that could drive interactions
with the page, allowing him to automatically rerun tests against
multiple browsers.

Test Automation
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Test automation is the use of software
To set test preconditions.
To control the execution of tests.
To compare the actual outcomes to predicted outcomes.
To report the Execution Status.

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Commonly, test automation involves automating
a manual process already in place that uses a
formalized testing process.

Why and When To Automate?
Frequent regression testing
● Repeated test case Execution is required
● User Acceptance Tests
● Faster Feedback to the developers
● Reduce the Human Effort
● Test same application on multiple environments
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Selenium
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Selenium is a robust set of tools that supports rapid
development of test automation for web-based
applications.
Selenium provides a rich set of testing functions
specifically geared to the needs of testing of a web
application.
Selenium operations are highly flexible, allowing many
options for locating UI elements and comparing
expected test results against actual application
behavior.

Selenium Features
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Supports Cross Browser Testing. The Selenium
tests can be run on multiple browsers.
Allows scripting in several languages like Java,
C#, PHP and Python.
Ajax/CSS support.
Assertion statements provide an efficient way of
comparing expected and actual results.
Inbuilt reporting mechanism.
Selenium is an open source tool

Selenium Components
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Selenium IDE

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Selenium Remote Control

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Selenium Grid

Selenium IDE
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Previously known as Selenium Recorder
Selenium IDE is an integrated development environment
for Selenium tests.
It is implemented as a Firefox extension, and allows you
to record, edit, and replay the test in firefox
Selenium IDE allows you to save tests as HTML, Java,
Ruby scripts, or any other format
It allows you to automatically add assertions to all the
pages.
Allows you to add selenese commands as and when
required

Selence
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Selence special test scripting language for
Selenium.
Selenese provides commands for performing
actions in a browser (click a link, select an
option), and for retrieving data from the
resulting pages.

Selenium IDE Installation
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First download Mozilla Firefox browser.

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Click on the Firefox tab present at the top the browser window.

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In drop down menu click on Add-on.

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Go to add on page of Mozilla Firefox browser

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In the search box of Add on page search the term "Selenium IDE" and
press enter

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Click on more link to the Selenium IDE add-on

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Go to http://docs.seleniumhq.org/download/

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Once installation is done the Mozilla Firefox browser will ask you to
restart the browser.Just Restart it.

Selenium IDE - UI
Start and Stop
Recording

Replay
Toolbar

Editor

Accessor
Area

Selenese
Script
Editor

Selenium Log

Recoding a Selenium Test Case
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Open Firefox that has the IDE installed
Open the base URL of the application to record.
Keep the application in a common base state.
Go To Tools  Selenium IDE and the IDE will be
opened
Now perform the operations on the application as you
are testing the application.
Once you are done with the recording click on the stop
recording button and save the test case through the file
menu. By default it will be saved as a selenese script
(HTML format)

Creating a Test Suite
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In the Selenium IDE you can
create any number of test
cases and save them as test
suite.
To Run the test Suite click on
the “Play entire test suite”
button as shown below.

Test Suite with
Test1 & test2

Running Options
Run a Test Case
Click the Run button to run the currently displayed test case.

Run a Test Suite
Click the Run All button to run all the test cases in the currently loaded test
suite.

Stop and Start
The Pause button can be used to stop the test case while it is running. The
icon of this button then changes to indicate the Resume button. To
continue click Resume.

Adding Assertions to the Script
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Selenese allows multiple ways of checking for UI
elements.

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Verifications and assertions are used to check if

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an element is present somewhere on the page?

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specific text is somewhere on the page?

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specific text is at a specific location on the page?

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Verifications and assertions are not one and the same.

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If an assertion fails, the script will be aborted but if a
verification fails the script will continue.

Assertion Statements
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assertTextPresent
This will assert if the text is present in the page.
assertText
This will assert if a particular element is having the particular text.
assertTitle
This will assert if the page is having a proper title.
assertValue
This will assert if a Text box or check box has a particular value
assertElementPresent
This will assert if a particular UI Element is present in the page.

User Acceptance Testing (UAT)
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User Acceptance Testing (UAT) is the last phase of the software
testing process. During UAT, actual software users test the
software to make sure it can handle required tasks in real world
scenarios, according to specifications.
UAT is one of the final and critical software project procedures
that must occur before newly developed software is rolled out to
the market.
UAT is also known as beta testing, application testing or end
user testing.

Steps Involved in In-House UAT
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Planning: The UAT strategy is outlined during the planning step.
Designing test cases: Test cases are designed to cover all the
functional scenarios of the software in real-world usage.
Executing test cases and documenting: The testing team executes the
designed test cases. All bugs are logged in a testing document with
relevant comments.
Bug fixing: Responding to the bugs found by the testing team, the
software development team makes final adjustments to the code to
make the software bug-free.
Sign-off: When all bugs have been fixed, the testing team indicates
acceptance of the software application. This shows that the application
meets user requirements and is ready to be rolled out in the market.

Importance of UAT
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UAT is important because it helps demonstrate that required
business functions are operating in a manner suited to realworld circumstances and usage.
UAT is an effective process with a high rate of return for those
who take the time to implement and follow its discipline.

Common Problem in Web Testing
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Record/replay is not reusable, is fragile.

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Managing test cases.

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UI changesmake tests brittle.

ScalaTest Using Selenium
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ScalaTest 2.0 includes a domain specific language (DSL) for writing
browser-based tests using Selenium.
To use ScalaTest's Selenium DSL, you'll first need to add Selenium to
your project dependencies. For example, in your sbt build you might
add:
libraryDependencies += "org.seleniumhq.selenium" % "seleniumjava" % "2.23.1" % "test->default"

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Mix trait WebBrowser into your test class.This trait provides the DSL
in its entirety except for one missing piece : an implicit
org.openqa.selenium.WebDriver

Element Locator
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ID: id=foo

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Name: name=foo

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First ID, then name: identifier=foo

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DOM: document.forms[‘myform’].myDropdown

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XPath: xpath=//table[@id='table1']//tr[4]/td[2]

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Link Text: link=sometext

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CSS Selector: css=a[href=“#id3”]

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Sensible defaults, e.g. xpath if starts with //

Example of UAT
class BlogSpec extends FlatSpec with ShouldMatchers with
WebBrowser {
implicit val webDriver: WebDriver = new HtmlUnitDriver
val host = "http://localhost:9000/"
"The blog app home page" should "have the correct title" in {
go to (host + "index.html")
pageTitle should be ("Awesome Blog")
}
}

Terms of Test Cases
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Navigation:
You can ask the browser to retrieve a page (go to a URL) like this:
go to "http://www.artima.com"

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Checking input element values:
textField("q").value should be ("Cheese!")
textArea("body").value should be ("I saw something cool today!")

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Implicit wait :
implicitlyWait(Span(10, Seconds))

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Cleaning up:
To close all windows, and exit the driver, use quit:
quit()

Test Code of Autocomplete
Functionality
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Define the autocomplete test code in a trait so that it will be use by all the test class which extends this trait :
trait Reattempt {
def attemptOrReattempAutoComplete(func: By => WebElement, selector: String, searchText: String,Text: String, startWithCount:
Int, maxNumberOfRetries: Int = 5): Unit = {
if (startWithCount <= maxNumberOfRetries && searchText.length > 0) {
func(By.cssSelector(selector)).clear
func(By.cssSelector(selector)).sendKeys(searchText)
try {
if(searchText == Text) {
func(By.cssSelector(“refrence of div where this search text element present")).click
} else {
func(By.cssSelector("refrence of div where this search text element presen")).sendKeys(Keys.ARROW_UP)
}
} catch {
case e: TimeoutException => attemptOrReattempAutoComplete(func, selector, searchText.substring(0, searchText.length 1),Text: String, startWithCount + 1, maxNumberOfRetries)
case e: ElementNotVisibleException => attemptOrReattempAutoComplete(func, selector, searchText.substring(0,
searchText.length - 1), Text: String, startWithCount + 1, maxNumberOfRetries)
}
}
}
}

Sequentially Running Test
To run the whole test cases sequentially we
have to put this line in build.sbt
“parallelExecution in Test := false
concurrentRestrictions in Global += Tags.limit(Tags.Test, 1)
parallelExecution in ScctPlugin.ScctTest := false”

Command For Run Acceptace Test
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To run single test
sbt “test-only packageName.className”

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To run whole test
sbt test

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To check the coverage report
sbt scct:test

Selenium Test in Headless Mode
with Xvfb
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➢

Follow the following steps to configure Xvfb
(Virtual Framebuffer) to run test cases:
install Xvfb on ubuntu using following
command :
sudo apt-get install xvfb

➢

Create .sh file in root /etc/init.d/ folder and
paste the following script code in the script (.sh)
file:

XVFB=/usr/bin/Xvfb
XVFBARGS=":1 -screen 0 1024x768x24 +extension GLX +render -noreset -nolisten tcp"
PIDFILE=/var/run/xvfb.pid
case "$1" in
start)
echo -n "Starting virtual X frame buffer: Xvfb"
start-stop-daemon --start --quiet --pidfile $PIDFILE --make-pidfile --background --exec $XVFB -- $XVFBARGS
echo "."
;;
stop)
echo -n "Stopping virtual X frame buffer: Xvfb"
start-stop-daemon --stop --quiet --pidfile $PIDFILE
echo "."
;;
restart)
$0 stop
$0 start
;;
*)
echo "Usage: /etc/init.d/xvfb {start|stop|restart}"
exit 1
esac

exit 0

Selenium Test in Headless Mode
with Xvfb
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Now,open the terminal and go to your project
and run :
Xvfb :1 -screen 0 1920x1080x24 +extension
GLX +render -noreset -nolisten tcp

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and open another tab of terminal and go to your
project and run :
export DISPLAY=:1
sbt test

Integrating Selenium testing infrastructure into Scala Project

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