org.hamcrest.collection

Class IsEmptyIterable<E>

java.lang.Object

org.hamcrest.BaseMatcher<T>

org.hamcrest.TypeSafeMatcher<java.lang.Iterable<? extends E>>

org.hamcrest.collection.IsEmptyIterable<E>

All Implemented Interfaces:

Matcher<java.lang.Iterable<? extends E>>, SelfDescribing

public class IsEmptyIterable<E>
extends TypeSafeMatcher<java.lang.Iterable<? extends E>>

Tests if collection is empty.

Constructor Summary

Constructors

Constructor and Description
IsEmptyIterable()

Method Summary

Modifier and Type	Method and Description
void	describeMismatchSafely(java.lang.Iterable<? extends E> iter, Description mismatchDescription) Subclasses should override this.
void	describeTo(Description description) Generates a description of the object.
static <E> Matcher<java.lang.Iterable<? extends E>>	emptyIterable() Creates a matcher for Iterables matching examined iterables that yield no items.
static <E> Matcher<java.lang.Iterable<E>>	emptyIterableOf(java.lang.Class<E> unusedToForceReturnType) Creates a matcher for Iterables matching examined iterables that yield no items.
boolean	matchesSafely(java.lang.Iterable<? extends E> iterable) Subclasses should implement this.

Methods inherited from class org.hamcrest.TypeSafeMatcher

describeMismatch, matches

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

IsEmptyIterable

public IsEmptyIterable()

Method Detail

matchesSafely

public boolean matchesSafely(java.lang.Iterable<? extends E> iterable)

Description copied from class: TypeSafeMatcher

Subclasses should implement this. The item will already have been checked for the specific type and will never be null.

Specified by:

matchesSafely in class TypeSafeMatcher<java.lang.Iterable<? extends E>>

describeMismatchSafely

public void describeMismatchSafely(java.lang.Iterable<? extends E> iter,
                                   Description mismatchDescription)

Description copied from class: TypeSafeMatcher

Subclasses should override this. The item will already have been checked for the specific type and will never be null.

Overrides:

describeMismatchSafely in class TypeSafeMatcher<java.lang.Iterable<? extends E>>

describeTo

public 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.

emptyIterable

public static <E> Matcher<java.lang.Iterable<? extends E>> emptyIterable()

Creates a matcher for Iterables matching examined iterables that yield no items. For example:

assertThat(new ArrayList<String>(), is(emptyIterable()))

emptyIterableOf

public static <E> Matcher<java.lang.Iterable<E>> emptyIterableOf(java.lang.Class<E> unusedToForceReturnType)

Creates a matcher for Iterables matching examined iterables that yield no items. For example:

assertThat(new ArrayList<String>(), is(emptyIterableOf(String.class)))

Parameters:

unusedToForceReturnType - the type of the iterable's content