org.hamcrest

Class CustomTypeSafeMatcher<T>

java.lang.Object

org.hamcrest.BaseMatcher<T>

org.hamcrest.TypeSafeMatcher<T>

org.hamcrest.CustomTypeSafeMatcher<T>

Type Parameters:

T - The type of object being matched

All Implemented Interfaces:

Matcher<T>, SelfDescribing

public abstract class CustomTypeSafeMatcher<T>
extends TypeSafeMatcher<T>

Utility class for writing one off matchers. For example:

 Matcher<String> aNonEmptyString = new CustomTypeSafeMatcher<String>("a non empty string") {
   public boolean matchesSafely(String string) {
     return !string.isEmpty();
   }
   public void describeMismatchSafely(String string, Description mismatchDescription) {
     mismatchDescription.appendText("was empty");
   }
 };
 

This is a variant of CustomMatcher that first type checks the argument being matched. By the time #matchesSafely(T) is is called the argument is guaranteed to be non-null and of the correct type.

Author:

Neil Dunn

Constructor Summary

Constructors

Constructor and Description
CustomTypeSafeMatcher(String description)

Method Summary

Methods

Modifier and Type	Method and Description
void	describeTo(Description description) Generates a description of the object.

Methods inherited from class org.hamcrest.TypeSafeMatcher

describeMismatch, describeMismatchSafely, matches, matchesSafely

Methods inherited from class org.hamcrest.BaseMatcher

_dont_implement_Matcher___instead_extend_BaseMatcher_, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

CustomTypeSafeMatcher

public CustomTypeSafeMatcher(String description)

Method Detail

describeTo

public final void describeTo(Description description)

Description copied from interface: SelfDescribing

Generates a description of the object. The description may be part of a a description of a larger object of which this is just a component, so it should be worded appropriately.

Parameters:

description - The description to be built or appended to.