Package org.hamcrest

Class BaseMatcher<T>

java.lang.Object

org.hamcrest.BaseMatcher<T>

All Implemented Interfaces:

Matcher<T>, SelfDescribing

Direct Known Subclasses:

AnyOf, CustomMatcher, DescribedAs, DiagnosingMatcher, Is, IsAnything, IsEqual, IsIn, IsNot, IsNull, IsSame, TypeSafeDiagnosingMatcher, TypeSafeMatcher

public abstract class BaseMatcher<T>
extends java.lang.Object
implements Matcher<T>

BaseClass for all Matcher implementations.

See Also:

Matcher

Constructor Summary

Constructors

Constructor	Description
BaseMatcher()

Method Summary

Modifier and Type	Method	Description
void	_dont_implement_Matcher___instead_extend_BaseMatcher_()	Deprecated.
void	describeMismatch(java.lang.Object item, Description description)	Generate a description of why the matcher has not accepted the item.
protected static boolean	isNotNull(java.lang.Object actual, Description mismatch)	Useful null-check method.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.hamcrest.Matcher

matches

Methods inherited from interface org.hamcrest.SelfDescribing

describeTo

Constructor Detail

BaseMatcher

public BaseMatcher()

Method Detail

_dont_implement_Matcher___instead_extend_BaseMatcher_

@Deprecated
public final void _dont_implement_Matcher___instead_extend_BaseMatcher_()

Deprecated.

Description copied from interface: Matcher

This method simply acts a friendly reminder not to implement Matcher directly and instead extend BaseMatcher. It's easy to ignore JavaDoc, but a bit harder to ignore compile errors .

Specified by:

_dont_implement_Matcher___instead_extend_BaseMatcher_ in interface Matcher<T>

See Also:

Matcher._dont_implement_Matcher___instead_extend_BaseMatcher_()

describeMismatch

public void describeMismatch(java.lang.Object item,
                             Description description)

Description copied from interface: Matcher

Generate a description of why the matcher has not accepted the item. The description will be part of a larger description of why a matching failed, so it should be concise. This method assumes that matches(item) is false, but will not check this.

Specified by:

describeMismatch in interface Matcher<T>

Parameters:

item - The item that the Matcher has rejected.

description - The description to be built or appended to.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

isNotNull

protected static boolean isNotNull(java.lang.Object actual,
                                   Description mismatch)

Useful null-check method. Writes a mismatch description if the actual object is null

Parameters:

actual - the object to check

mismatch - where to write the mismatch description, if any

Returns:

false iff the actual object is null