How does testing work in Agile/Scrum methodology?

Key Principles of Agile Testing

• Testing is continuous throughout the sprint
• Testers are part of the development team
• Early and frequent feedback
• Collaboration between developers and testers
• Test automation is emphasized
• Focus on preventing defects, not just finding them

Testing Activities in Scrum

Sprint Planning:

• Review user stories and acceptance criteria
• Identify testable scenarios
• Estimate testing effort
• Plan test automation tasks

During Sprint:

• Write test cases based on user stories
• Perform continuous testing as features are developed
• Collaborate with developers on test scenarios
• Automate regression tests
• Participate in daily standups
• Update test documentation

Sprint Review/Demo:

• Demonstrate tested features to stakeholders
• Validate acceptance criteria are met
• Gather feedback

Sprint Retrospective:

• Discuss what went well in testing
• Identify testing improvements
• Plan process enhancements

Agile Testing Quadrants

Q1: Technology-Facing, Supporting Development

• Unit tests
• Component tests

Q2: Business-Facing, Supporting Development

• Functional tests
• Story tests
• Prototypes

Q3: Business-Facing, Critiquing Product

• Exploratory testing
• Usability testing
• UAT

Q4: Technology-Facing, Critiquing Product

• Performance testing
• Security testing
• Load testing

Definition of Done (DoD)

• Code is written and reviewed
• Unit tests are written and passing
• Integration tests are passing
• Acceptance criteria are met
• No critical/major bugs
• Documentation is updated
• Feature is deployed to test environment

Benefits of Agile Testing

• Early defect detection
• Faster feedback cycles
• Better collaboration
• Continuous improvement
• Higher quality deliverables