Testing Fundamentals - Testing Types and Levels
You wrote an integration test for two modules, but the test fails with a null pointer error. What is the most likely cause?
You wrote an integration test for two modules, but the test fails with a null pointer error. What is the most likely cause?
medium📝 Debug Q14 of 15
Step-by-Step Solution
Solution:
Step 1: Analyze null pointer error in integration
Null pointer errors usually happen when one module expects data from another but receives nothing or null.Step 2: Connect error to module interaction
If modules are not properly connected or data is missing, integration test fails with null pointer.Final Answer:
Modules are not properly connected or data is missing between them -> Option AQuick Check:
Null pointer = missing data between modules [OK]
Quick Trick: Null pointer in integration means missing connection/data [OK]
Common Mistakes:
- Assuming unit tests guarantee integration success
- Blaming system testing for integration errors
- Ignoring environment issues unrelated to null pointers
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