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XP Programming and Software Testing Services. Blending in Testing with Development

Development teams and Testing teams have long remained at locked horns with each other for responsibilities related to software quality. Of course the only reason is incorrect and insufficient planning at the software conceptualization phase. Various software development workflows have evolved in the recent years to closely integrate software development with testing as a continuous and ongoing activity.

Extreme Programming or better known as XP programming is ready for Agile Testing adopted by software testing companies to integrate with software development. This method is focused on business results which remain dynamic to suit customer expectations at all times. It adopts the approach of continuous testing with immediate modifications and improvements as required.

The entire development team along with the QA teams is responsible for quality of the software. An amazing solution drawing out the best from both the testers and the developers tightly integrating their skills, complementing each other to deliver promising software testing services.

The name itself derives from the fact that it pushes the Testing and Development practices to extreme levels of perfection to achieve the desired results.

Well known Testing Practices for XP Programming

Both Continuous Integration and Test Driven Development hold a special place for software testing companies as also in Extreme Programming. In XP, CI is generally used in combination with automated unit tests developed through TDD. Continuous Integration aims at merges all developer copies of the software into a single version frequently, to smoothen the integration process for the software.

Test Driven Development promotes repetition of very short development cycles where test cases are written with an aim to improvise a functionality. The code is put to test and refactored or corrected repeatedly unless it passes the test.

In XP, CI is used in combination with repeated automated unit tests written through practices of test-driven development verifying them continuously before integrating with the mainline.

The Extreme Programming Life Cycle. Innovative & Integrated Testing

XP Software Testing

The Planning Game

The planning game is integrated at many different levels with an aim to allow the enterprise core teams and the development teams to work seamlessly together to generate business value for further benefits. Once the list of requirements and the features needed to satisfy these are identified, the Developers estimate the time requirements and the details of the teamwork. The schedules of implementations and priority lists are prepared in close co-ordination with the enterprise needs.

        • This is the first phase of Extreme Programming Life Cycle and it is very critical that software testing companies plan this carefully
        • Customers and Users of the system explain their requirements to the Development team to narrate their “stories”
        • The Development Teams convert the stories to features of the system to be and check and iterate with the users to derive a comprehensive product.
        • The Programming team plans for the time and costs of the iterations needed for the exercise

Designing

Designing is the first step for any iteration of XP Programming. This innovative design ensures uniformity in coding styles and formats for compatibility across different team members by using metaphors and naming conventions for components like classes, objects and methods.

Software Class Responsibilities and Collaboration cards are used to allow developers and other members of the project team to exchange ideas and suggestions integrated with the object oriented approach.

This Design style also promotes smaller units of code to provide solutions for problems, to reduce the risk that comes with making changes to the complete system.

Design Principals for XP

Refactoring techniques are implemented with an aim to improve source code maintainability and readability. This is helpful in implementing changes during tests.

Coding

Coding is the backbone of the XP Programming Life Cycle and ensures that the testing philosophy is integrated into this step as a continuous exercise to offer better software testing services.

Coding is focused on developing the code based on collective code ownership and adhering to the predefined metaphors and standards. Pair programming is followed where two programmers work on the same machine with an aim to produce superior quality of code.

Coding Practices for XP

It is also ensured that the efficiency and productivity of the programmers remains at their best by strictly following the 40 hour work weeks and no overtime under any circumstances It goes without saying that continuous integration is observed and the code hence is tested and conflict free at all times.

Testing

Unit & Acceptance Tests

Extreme program integrates testing with the development phase itself rather than indulging in retrospective testing, making the workflows of software testing companies easier. Extreme Programming combines two types of testing to make the testing phase a fool proof and comprehensive.

Unit tests

These are automatically generated tests by the developers to test the functionalities as and when they are written. Unit test typically tests only a single component like a class. They are written using unit testing framework.

Acceptance Tests

These tests are built around the specifications given in by the customers and they test the entire system. When all the tests pass for a given feature, the story or the requirement is cited as complete. This test can be manually run as well as automated as per the discretion of the QA teams

Listening

Feedback

Listening to the Customer, an innovative measure to keep a constant feedback cycle on, is aimed at constantly keeping a check on the customer expectations fulfilment. The developers receive feedbacks from the project manager as well, besides the customer.

Customer feedback is integrated with the Acceptance Tests and the requirements or stories are constantly revised at the end of each test.

Top Mistakes to be avoided by XP Teams and Software Testing Companies

XP practices like continuous integration, TDD and Refactoring makes the extreme programming the most accurate process increasing the chances of near zero defects.

There are mistakes that XP teams make and should be consciously avoided at all times.

  • Trying to ignore unit test and focusing only on acceptance tests and assuming that they are sufficient
  • Not investing in automation for the acceptance tests
  • Initiating customer onboarding with insufficient testing
  • Listening to customers too much and to the extent that the planning loses proper analysis
  • Underestimating the necessity of integration testing and extended sequence testing
  • Not including test activities during Planning Game

In a Nutshell

Extreme programming is a software development ideology based on simple designs, constant communication and feedbacks and the acumen to listen and rectify the problems instantly, with an aim to improvise the accuracies of the software testing services. It works towards bringing developers and testers together with simple practices and workflows and keep development and testing in tune with each other at all times.

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Author: SPEC QA