What is Test Approach? Different Techniques and Types
A test approach is the test strategy implementation of a project which defines how testing would be carried out, defines the strategy which needs to be implemented and executed, to carry out a particular task.
Test approach has two techniques:
- Proactive -tests are designed as early as possible in order to find and fix the defects.
- Reactive – test design comes after software or system has been produced
Usually, Proactive test approach is followed. Proactive test approach and effective test strategy makes life easier of the tester.
Through test approach, it is easy to identify:
- What is the scope and objective of the testing process?
- What needs to be considered and tested?
- How to test?
- How much to test?
Typical approaches/strategies include:
- Focusing testing on the most critical functionality (risk based)
- Stochastic or Monkey testing using random or statistical information (tool).Operational profiles
- Failure based (error guessing and fault attack) ,Experience-based
- check-list based and quality characteristic-based
Process- or standard-compliant approaches
- Industry-specific standards (Eg. medical, aviation)
- Various agile methodologies
Dynamic and heuristic approaches
- such as exploratory testing (more reactive approach than pre-planned approach)
- Execution and evaluation are concurrent tasks
- Test coverage is driven primarily by the advice and guidance of technology and/or business
- domain experts outside the test team
- Includes reuse of existing test material, extensive automation of functional regression tests, and standard test suites
Selecting a Test approaches/ strategy
Approach is selected considering the context:
- Risk of failure of the project, hazards to the product and
- risks of product failure to humans, the environment and the company
- Skills and experience of the people in the proposed
- techniques, tools and methods
- The objective of the testing endeavor and the mission of the testing team
- Regulatory aspects, such as external and internal regulations for the development process
- The nature of the product and the business