org.mockito.internal.stubbing.defaultanswers

Class ReturnsEmptyValues

java.lang.Object

org.mockito.internal.stubbing.defaultanswers.ReturnsEmptyValues

All Implemented Interfaces:

Serializable, Answer<Object>

public class ReturnsEmptyValues
extends Object
implements Answer<Object>, Serializable

Default answer of every Mockito mock.

• Returns appropriate primitive for primitive-returning methods
• Returns consistent values for primitive wrapper classes (e.g. int-returning method returns 0 and Integer-returning method returns 0, too)
• Returns empty collection for collection-returning methods (works for most commonly used collection types)
• Returns description of mock for toString() method
• Returns zero if references are equals otherwise non-zero for Comparable#compareTo(T other) method (see issue 184)
• Returns an java.util.Optional#empty() empty Optional for Optional. Similarly for primitive optional variants.
• Returns an java.util.stream.Stream#empty() empty Stream for Stream. Similarly for primitive stream variants.
• Returns an java.time.Duration.ZERO zero Duration for empty Duration and java.time.Period.ZERO zero Period for empty Period.
• Returns null for everything else

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ReturnsEmptyValues()

Method Summary

Modifier and Type	Method and Description
Object	answer(InvocationOnMock invocation)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ReturnsEmptyValues

public ReturnsEmptyValues()

Method Detail

answer

public Object answer(InvocationOnMock invocation)

Specified by:

answer in interface Answer<Object>

Parameters:

invocation - the invocation on the mock.

Returns:

the value to be returned