Mock constructor with mockito

java, junit, mockito

Solution

UPDATE: since since version 3.5.0, Mockito can do this without PowerMockito.

You can use PowerMock to mock constructors.

If you can't use PowerMock for some reason, the most workable solution is to inject a factory to whatever class contains this method. You would then use the factory to create your `GeneraIDParaEntidadCliente` object and mock the factory.

Problem

I want to mock a constructor into method. ``` public String generaID() { GeneraIDParaEntidadCliente aux = new GeneraIDParaEntidadCliente(nombre, registro); entidad.setID(aux.generaID); } ``` In my test I want do something like this : ``` when(new GeneraIDParaEntidadCliente(anyString(), any(Entidad.class)).thenReturn(generaIdMock) ``` but give me this error `org.mockito.exceptions.misusing.InvalidUseOfMatchersException:` Any idea why?

Original source

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