1. Black Box Test Design Techniques
- Specification Based
- Experience Based
2. White-box or Structural Test design techniques
Black-box testing techniques
These includes specification-based and experienced-based techniques. These use external descriptions of the software, including specifications, requirements, and design to derive test cases. These tests can be functional or non-functional, though usually functional. Tester needs not to have any knowledge of internal structure or code of software under test.
Specification-based techniques:
- Equivalence partitioning
- Boundary value analysis
- Use case testing
- Decision tables
- Cause-effect graph
- State transition testing
- Classification tree method
- Pair-wise testing
From ISTQB Syllabus:
Common features of specification-based techniques:
- Models, either formal or informal, are used for the specification of the problem to be solved, the software or its components.
- From these models test cases can be derived systematically.
Experienced-based techniques:
- Error Guessing
- Exploratory Testing
Read Unscripted testing Approaches for the above.
From ISTQB Syllabus:
Common features of experience-based techniques:
- The knowledge and experience of people are used to derive the test cases.
- Knowledge of testers, developers, users and other stakeholders about the software, its
usage and its environment. - Knowledge about likely defects and their distribution.
White-box techniques
Also referred as structure-based techniques. These are based on the internal structure of the component. Tester must have knowledge of internal structure or code of software under test.
Structural or structure-based techniques includes:
- Statement testing
- Condition testing
- LCSAJ (loop testing)
- Path testing
- Decision testing/branch testing
From ISTQB Syllabus:
Common features of structure-based techniques:
- Information about how the software is constructed is used to derive the test cases, for example, code and design.
- The extent of coverage of the software can be measured for existing test cases, and further test cases can be derived systematically to increase coverage.
Recent Comments