"Wanted but Not Invoked" in Mockito

Date: 2023-06-23

This tutorial explains Mockito's "Wanted but Not Invoked" error in Java unit testing. Mockito creates mock objects to simulate dependencies, allowing isolated testing. The error arises when a mocked method, expected to be called, isn't. This indicates a mismatch between expected and actual code behavior. The article details how to identify and resolve this error by reviewing test code, verifying method invocations, and ensuring proper interaction with mock objects. Understanding Mockito's verify, verifyZeroInteractions, and verifyNoMoreInteractions methods is crucial for preventing this error and writing robust tests.

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