JUnit: java.lang.NullPointerException: Cannot invoke “[Ljava.lang.Class;.clone()” because ” .parameterTypes” is null

Problem: If you are launching JUnit test and returns next error:

java.lang.NullPointerException: Cannot invoke "[Ljava.lang.Class;.clone()" because " .parameterTypes" is null

Solution: The problem is that you are mocking a java.lang.* object.

Explanation: Mockito is based on java.lang.* so you can’t mock it.

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