Mocking android method in Junit test

Question

I am trying to create some JUnit tests for my Android app.

In the app I have the following method, which I am trying to get tested:

public void checkBoxAction(View v) { CheckBox cb = (CheckBox) v; Boolean isChecked = cb.isChecked(); //Do stuff }

I am using Mockito and I have got this far:

// ... CheckBox dummyV = new CheckBox(mMockContext); Mockito.when(dummyV.isChecked()).thenReturn(true); item.checkBoxAction(dummyV); // ...

But when I run the test I get error:

java.lang.RuntimeException: Method isChecked in android.widget.CompoundButton not mocked...

I think the problem is that in the method checkBoxAction, the isChecked method is not executed on v, but on other object. Is this assumption correct? Is this the problem? And how can I fix it? Or there is something else?

ok, added as an answer. If it works please mark it as accepted — Juan Cruz Soler
– Juan Cruz Soler, Commented Jul 7, 2016 at 13:20

Juan Cruz Soler · Accepted Answer · 2016-07-07 13:20:39Z

1

You should mock the CheckBox if you want to use Mockito.when, try:

CheckBox dummyV = mock(CheckBox.class);

answered Jul 7, 2016 at 13:20

Juan Cruz Soler

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