Humans are social animals and this is one of the major reasons why we evolved into one of the most intelligent species on this planet. Social interactions bring forth learning and collective wisdom. This is one of the hallmarks of Agile/Scrum in software development and has revolutionized the way we perceive, develop and test software. There are many variants to Agile/Scrum and the ones which are gaining prominence are Test Driven Development (TDD) and Behavior Driven Development (BDD).
Test-driven development is related to the test-first programming concepts of extreme programming , begun in 1999, but more recently has created more general interest in its own right.
Test-driven development(TDD) is a software development process that relies on the repetition of a very short development cycle: first the developer writes an (initially failing) automated test case that defines a desired improvement or new function, then produces the minimum amount of code to pass that test, and finally refactors the new code to acceptable standards. Kent Beck , who is credited with having developed or ‘red iscovered’ the technique, stated in 2003 that TDD encourages simple designs and inspires confidence.
Behavior-driven development(abbreviated BDD) is a software development process based on test-driven development(TDD).Behavior-driven development combines the general techniques and principles of TDD with ideas from domain-driven design and object-oriented analysis and design to provide software developers and business analysts with shared tools and a shared process to collaborate on software development. Behavior-driven development was developed by Dan North as a response to the issues encountered teaching test-driven development:
At its core, both TDD/BDD focuses on behavioral specification of software units.
- Define a test set for the unit first;
- Then implement the unit;
- Finally verify that the implementation of the unit makes the tests succeed.
This definition is rather non-specific in that it allows tests in terms of high-level software requirements, low-level technical details or anything in between. The original developer of BDD (Dan North) came up with the notion of BDD because he was dissatisfied with the lack of any specification within TDD of what should be tested and how.One way of looking at BDD therefore, is that it is a continued development of TDD which makes more specific choices than TDD.
Behavior-driven development specifies that tests of any unit of software should be specified in terms of the desired behavior of the unit. Borrowing from agile software development the “desired behavior” in this case consists of the requirements set by the business—that is, the desired behavior that has business value for whatever entity commissioned the software unit under construction.Within BDD practice, this is referred to as BDD being an “outside-in” activity
Action Driven Test Automation Framework (ADTF) is a portable software testing automation framework for web applications. It is developed using Selenium2, TestNG, ReportNG and JavaEE to fulfill all the automation needs of TDD/BDD based testing.
ADTF combines the key elements of TDD/BDD into a single framework. The desired behavior of a software unit as described in the key principles of TDD/BDD is captured as actions in ADTF from requirements written in English language.
- ADTF tooling reads a specification document.
- ADTF directly understands completely formal parts of the
ubiquitous language Based on this, the tool breaks each
scenario up into meaningful actions.
- Each individual clause in a scenario is transformed into some sort of parameter for a test for the user story. This part requires project-specific work by the software developers.
- The ADTF framework then executes the test for each scenario, with the parameters from that scenario.
|Next generation generic automation framework||The best of Selenium and TestNG are incorporated in ADTF||Web Interface for test case management and execution|
|Recording||XML driven framework||Web based reporting|
|Easy to manage objects and data||Extendable and easy to maintain||Faster execution|
|No need to customize the script||Customizable Test execution reports||Extendable|
|Easy to create and maintain test suites||Supports automating internationalization testing||Maintainable|
|Easy to manage test cases|
|Change management and Version maintenance made easy|
|Multi browser, Multi-OS testing|
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