Databricks Certification Databricks-Certified-Professional-Data-Engineer Question # 23 Topic 3 Discussion

A unit test is designed to verify the correctness of a small, isolated piece of code, typically a single function. Testing a mathematical function that calculates the area under a curve is an example of a unit test because it is testing a specific, individual function to ensure it operates as expected.

References:

Software Testing Fundamentals: Unit Testing