Mockito offers a one-size-fits-all mehtod to create mocks of (non-final) classes and interfaces.
Dependency mock = Mockito.mock(Dependency.class);
This creates a mock instance of
Dependency regardless of whether
Dependency is a interface or class.
It is then possible to stub method calls to that mock using the Mockito.when(x).thenReturn(y) notation.
So that calls to
Dependency.possiblyBuggyMethod() simply return
There is another notation that is discouraged in most use cases as it is not typesafe.