Black box Testing Techniques?
System testing usesbox testing . There are 4 techniques in Black box
- Boundary Value Analysis ( )
- Equivalence Class Partitions ( )
- Decision Tables ( )
- State Transition Diagrams ( )
Boundary Value Analysis (BVA): BVA takes care about the size in software testing
For example: Testing Password Field, Password field should be minimum 4 chars and maximum 8 chars. BVA for this is
Equivalence Class Partitions (ECP): ECP takes care about the Type in software testing.
For example: Testing username Field, User name should be combination of Capital letters and numbers.
Note: If ouris related to a field, the testers are using BVA and ECP techniques because exhaustive testing is impossible from testing principles
Decision Tables: If our test related to an operation with alternative expectations, the testers are using DT techniques.
For example: If login user name and password are correct, next window will appear. If any one of user name or password is are wrong, error window should open. So here we have 2 alternatives like Next window and error window.
State Transition Diagrams (STD): If a test related to an operation with no alternative expectations, the testers are using state transition diagrams.