How to verify multiple method calls with different params

java mockito
Brad picture Brad · Dec 14, 2011 · Viewed 85.5k times · Source

I have the following method that I wish to verify behaviour on.

public void methodToTest(Exception e, ActionErrors errors) {
    ...

    errors.add("exception.message", 
            ActionMessageFactory.createErrorMessage(e.toString()));

    errors.add("exception.detail",
            ActionMessageFactory.createErrorMessage(e.getStackTrace()[0].toString()));

    ...
}

In my @Test class I was hoping to do something like this to verify that errors.add() is called with "exception.message" and again with "exception.detail"

verify(errors).add(eq("exception.message"), any(ActionError.class));
verify(errors).add(eq("exception.detail"), any(ActionError.class));

however Mockito complains as follows

Argument(s) are different! Wanted:
actionErrors.add(
    "exception.message",
    <any>
);

Actual invocation has different arguments:
actionErrors.add(
    "exception.detail",
    org.apache.struts.action.ActionError@38063806
);

How can I tell Mockito to check for both values?

Answer

Brad picture Brad · Dec 14, 2011

Further reading has led me to try using ArgumentCaptors and the following works, although much more verbose than I would like.

ArgumentCaptor<String> argument = ArgumentCaptor.forClass(String.class);

verify(errors, atLeastOnce()).add(argument.capture(), any(ActionMessage.class));

List<String> values = argument.getAllValues();

assertTrue(values.contains("exception.message"));
assertTrue(values.contains("exception.detail"));

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