Today I am going to discuss Testing Techniques- Pairwise Testing. “Generate less number of combination with more test coverage.
What is Pairwise Technique?
- A black-box test design technique in which test cases are designed to execute all possible discrete combinations of each pair of input parameters
- Pairwise testing technique can dramatically reduce the number of combinations to be covered but remains very effective in terms of fault detection
Now let’s learn how to apply Pairwise Testing by this example.
Let’s take an example –
Suppose, we have a web app with one page that we have to do the Cross browser testing (CBT) e.g for IE, Chrome, Firefox, Opera, Safari and Cross OS testing with Windows, Mac, Ubuntu. We have another parameter like HTTP 1, HTTP 2 and resolution HD, NonHD(low resolution).
So Normal combination – 5*3*2*2 = 60
To perform 60 Test cases we will need about 180 minutes(assuming 3 minutes per Test Case).
Let’s take this example in the Pairwise Testing.
We will use the Pairwiser-tool for combination to generate.
Need for Pairwiser tool
- Web-based easy to use.
- Generate the combination and export to excel.
- Generate the Test case and export to JIRA directly.
- You can apply the constraint to the input parameter.
Input in the Pairwiser Tool
- Input 1 – CBT : IE, Chrome , Firefox , Safari , Opera
- Input 2 – Cross OS: Windows, Mac OSX, Ubuntu
- Input 3 – Protocol : HTTP1 , HTTP2
- Input 4 – Resolution: HD, NonHD
Create a New Test Plan in – https://inductive.no/pairwiser-tool/
Added input Parameters and Constraints
More IE – Constraints
Navigate to Generate Test Case – Only 15 Test Cases \m/ 🙂
Time in Test Cases Now
Test Cases = 15
Time per Test = 3 minutes
Total Time = 45 Minutes only before it was 3 hour
Lets Analysis the coverage, the Results
Test Cases Generation – Template
Test Cases – Copy to JIRA or Excel
That’s All Folks
In the Form of Slides
This is series of the API Testing using postman First
- Part 0 –API testing tutorials – Getting Started
- Part 1 – API testing using Postman – Part 1
- Part 2-API testing using postman – Part 2(Running in Jenkins)
- Part 3 – API testing using postman – Part 3: Environments & Pre-request Script basics
In this series, We going to learn about the create a Test Suite in the Python. Let’s not waste much of the time lets start as quickly as possible.
Things you know before.
1. Selenium – Testing Framework
2. Python – Basic Python Syntax. – Please install it before proceeding.
3. Brain 😛
About Selenium :
Installing Python bindings for Selenium
Go to Command prompt or Terminal in the Mac and Type.
Make sure pip is installed on your system.(If not you can install it using this link here)
pip install selenium
It will install the python binding for the selenium to your system.
Step 1 : Running Selenium Server and Install Python Selenium bindings
Let’s run the Selenium Server that listens to our command/Test cases written python and execute them in the browser. Make sure java is installed on your system and its available in the path. If not follow this tutorial. And set up to path here
Download – Selenium server here.
Run the Selenium Server with this command.
java -jar selenium-server-standalone-3.x.x.jar
You will see something like this on the command line.
Selenium Server is up and Running.
Step 2 : Creating a Basic Test in the Selenium with Python and Run it.
Create a File in the Pycharm ( Python Editor) e.g I have made a Folder structure for the upcoming tutorials also. So This part is Part 1 and I have one file HelloWorld.py that will have the code for the First Test case in python.
In the File, we are going
1. Import the selenium web driver.
2. Create a driver object from FirefoxDriver Class and Open the Borwser.
3. Use get method to go to the URL.
4. Assert the title and Close the Brower.
Run the Test by
from selenium import webdriver
driver = webdriver.Firefox()
assert "Python" in driver.title
File run using python:
So we have successfully run our first Test, Let’s move to the other Tutorial in the Next Part2.
Hope to see you guys in the next part.