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  * Copyright (c) 2007 Mockito contributors
  * This program is made available under the terms of the MIT License.
 package org.mockito.configuration;
Use it to configure Mockito. For now there are not many configuration options but it may change in future.

In most cases you don't really need to configure Mockito. For example in case of working with legacy code, when you might want to have different 'mocking style' this interface might be helpful. A reason of configuring Mockito might be if you disagree with the org.mockito.internal.stubbing.defaultanswers.ReturnsEmptyValues unstubbed mocks return.

To configure Mockito create exactly org.mockito.configuration.MockitoConfiguration class that implements this interface.

Configuring Mockito is completely optional - nothing happens if there isn't any org.mockito.configuration.MockitoConfiguration on the classpath.

org.mockito.configuration.MockitoConfiguration must implement IMockitoConfiguration or extend DefaultMockitoConfiguration

Mockito will store single instance of org.mockito.configuration.MockitoConfiguration per thread (using ThreadLocal). For sanity of your tests, don't make the implementation stateful.

If you have comments on Mockito configuration feature don't hesitate to write to

@SuppressWarnings("deprecation")//supressed until ReturnValues are removed
public interface IMockitoConfiguration {


Please use getDefaultAnswer()


1. Leave the implementation of getReturnValues() method empty - it's not going to be used anyway.

2. Implement getDefaultAnswer() instead.

In rare cases your code might not compile with recent deprecation & changes. Very sorry for inconvenience but it had to be done in order to keep framework consistent.

See javadoc org.mockito.ReturnValues for info why this method was deprecated

Allows configuring the default return values of unstubbed invocations

See javadoc for IMockitoConfiguration

    ReturnValues getReturnValues();
Allows configuring the default answers of unstubbed invocations

See javadoc for IMockitoConfiguration


Configures annotations for mocks

See javadoc for IMockitoConfiguration

This should be turned on unless you're a Mockito developer and you wish to have verbose (read: messy) stack traces that only few understand (eg: Mockito developers)

See javadoc for IMockitoConfiguration

if Mockito should clean stack traces
    boolean cleansStackTrace();
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