Question

I have the below code

public void testInitializeButtons() {
        model.initializeButtons();
        verify(controller, times(1)).sendMessage(
                eq(new Message(eq(Model.OutgoingMessageTypes.BUTTON_STATUSES_CHANGED),
                        eq(new ButtonStatus(anyBoolean(), eq(false), eq(false), eq(false), eq(false))),
                        anyObject())));
    }

which throws the following exception

org.mockito.exceptions.misusing.InvalidUseOfMatchersException: 
Invalid use of argument matchers!
1 matchers expected, 9 recorded.
This exception may occur if matchers are combined with raw values:
    //incorrect:
    someMethod(anyObject(), "raw String");
When using matchers, all arguments have to be provided by matchers.
For example:
    //correct:
    someMethod(anyObject(), eq("String by matcher"));

For more info see javadoc for Matchers class.
    at se.cambiosys.client.medicalrecords.model.MedicalRecordPanelModelTest.testInitializeButtons(MedicalRecordPanelModelTest.java:88)

Can someone point to me how to write the test correctly?

Answer 1

You can’t do that: eq() can be used only for the mocked method parameters, not inside other objects (like you did in the constructor of Message).
I see three options:

• Write a custom matcher
• Use an ArgumentCaptor, and test the properties of the Message with asserts()
• Implement equals() in the Message class in order to test equality with another Message, based upon the fields you actually want to verify.