Final answer:
Boundary value analysis, equivalence partitioning, and path testing are all appropriate test case design techniques for WebApp component-level testing.
Step-by-step explanation:
The appropriate test case design techniques for WebApp component-level testing are boundary value analysis, equivalence partitioning, and path testing.
Boundary value analysis involves testing the input values at the upper and lower boundaries of their valid ranges. This technique helps identify potential issues related to boundary conditions.
Equivalence partitioning divides the input values into groups or partitions that are expected to exhibit similar behavior. This technique helps reduce the number of test cases required to achieve thorough coverage.
Path testing focuses on examining the execution paths within the component. This technique helps verify that different paths through the code are functioning correctly.