Test Case Design and Techniques Questions

Comprehensive knowledge and practical application of formal test design techniques used to derive effective and efficient test cases from requirements. Topics include boundary value analysis, equivalence partitioning, decision table testing, and state transition testing. Candidates should be able to design positive test cases for expected behavior, negative test cases for invalid inputs and error handling, and boundary tests for minimum and maximum values and off by one conditions. Interviewers may ask candidates to map requirements to test cases, create decision tables for combinatorial logic, model state machines for behavior driven by state, select representative inputs to maximize defect detection while reducing redundancy, and write clear, maintainable test steps with preconditions and cleanup.