org.elasticsearch.test

Class EqualsHashCodeTestUtils

java.lang.Object

org.elasticsearch.test.EqualsHashCodeTestUtils

public class EqualsHashCodeTestUtils
extends java.lang.Object

Utility class that encapsulates standard checks and assertions around testing the equals() and hashCode() methods of objects that implement them.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	EqualsHashCodeTestUtils.CopyFunction<T> A function that makes a copy of its input argument
static interface	EqualsHashCodeTestUtils.MutateFunction<T> A function that creates a copy of its input argument that is different from its input in exactly one aspect (e.g.

Constructor Summary

Constructors

Constructor and Description
EqualsHashCodeTestUtils()

Method Summary

Modifier and Type	Method and Description
static <T> void	checkEqualsAndHashCode(T original, EqualsHashCodeTestUtils.CopyFunction<T> copyFunction) Perform common equality and hashCode checks on the input object
static <T> void	checkEqualsAndHashCode(T original, EqualsHashCodeTestUtils.CopyFunction<T> copyFunction, EqualsHashCodeTestUtils.MutateFunction<T> mutationFunction) Perform common equality and hashCode checks on the input object

Methods inherited from class java.lang.Object

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

Constructor Detail

EqualsHashCodeTestUtils

public EqualsHashCodeTestUtils()

Method Detail

checkEqualsAndHashCode

public static <T> void checkEqualsAndHashCode(T original,
                                              EqualsHashCodeTestUtils.CopyFunction<T> copyFunction)

Perform common equality and hashCode checks on the input object

Parameters:

original - the object under test

copyFunction - a function that creates a deep copy of the input object

checkEqualsAndHashCode

public static <T> void checkEqualsAndHashCode(T original,
                                              EqualsHashCodeTestUtils.CopyFunction<T> copyFunction,
                                              EqualsHashCodeTestUtils.MutateFunction<T> mutationFunction)

Perform common equality and hashCode checks on the input object

Parameters:

original - the object under test

copyFunction - a function that creates a deep copy of the input object

mutationFunction - a function that creates a copy of the input object that is different from the input in one aspect. The output of this call is used to check that it is not equal() to the input object