Agile Testing - Methodologies

Agile is an iterative development methodology, where the entire project team participates in all the activities. The requirements evolve as the iterations progress, through collaboration between the customer and the self-organizing teams. As Coding and Testing are done interactively and incrementally, during the course of development, the end-product would be of quality and ensures customer requirements.

Every iteration results in an integrated working product increment and is delivered for User Acceptance Testing. The customer feedback thus obtained would be an input to the next / subsequent Iterations.

Continuous Integration, Continuous Quality

Continuous Integration is the key for Agile Development success. Integrate frequently, at least daily such that you are ready for a release as and when required. Testing in Agile becomes an essential component of all the phases of the development, ensuring continuous quality of the product. Constant feedback from everyone involved in the project adds to the quality of the product.

In Agile, communication is given utmost importance and the customer requests are received as and when necessary. This gives the satisfaction to the customer that all the inputs are considered and working quality product is available throughout the development.

Agile Methodologies

There are several Agile Methodologies that support Agile Development. The Agile Methodologies include −

Scrum

Scrum is an Agile development method that emphasizes on team-centric approach. It advocates participation of the entire team in all the project development activities.

XP

eXtreme Programming is customer-centric and focuses on constantly changing requirements. With frequent releases and customer feedback, the end-product will be of quality meeting customer requirements that are made clearer during the process.

Crystal

Crystal is based on chartering, cyclic delivery and wrap up.

Chartering involves forming a development team, carrying out a preliminary feasibility analysis, arriving at an initial plan and the development methodology.
Cyclic Delivery with two or more delivery cycles focuses on the development phase and final integrated product delivery.
During Wrap up, deployment into the user environment, post-deployment reviews and reflections are performed.

FDD

Feature Driven Development (FDD) involves designing and building features. The difference between FDD and other Agile Development Methodologies is that the features are developed in specific and short phases separately.

DSDM

Dynamic Software Development Method (DSDM) is based on Rapid Application Development (RAD) and is aligned to the Agile Framework. DSDM focuses on frequent delivery of the product, involving users actively and empowering the teams to make quick decisions.

Lean Software Development

In Lean Software Development, focus is on eliminating waste and giving value to the customer. This results in rapid development and product of value.

Waste includes partially done work, irrelevant work, features that are not used by the customer, defects, etc. that add to delays in delivery.

The Lean Principles are −

Eliminate Waste
Amplify Learning
Delay Commitment
Empower the Team
Deliver Fast
Build Integrity in
See the Whole

Kanban

Kanban focuses on managing work with an emphasis on just-in-time (JIT) delivery, while not overloading the team members. The tasks are displayed for all the participants to see and for the Team Members to pull work from a queue.

Kanban is based on −

Kanban Board (Visual and Persistent across the Development)
Work-in-progress (WIP) Limit
Lead Time