Package org.hamcrest.collection

Class IsCollectionWithSize<E>

java.lang.Object

org.hamcrest.BaseMatcher<Collection<? extends E>>

org.hamcrest.TypeSafeDiagnosingMatcher<Collection<? extends E>>

org.hamcrest.FeatureMatcher<Collection<? extends E>,Integer>

org.hamcrest.collection.IsCollectionWithSize<E>

Type Parameters:

E - the collection element type

All Implemented Interfaces:

Matcher<Collection<? extends E>>, SelfDescribing

public class IsCollectionWithSize<E>
extends FeatureMatcher<Collection<? extends E>,Integer>

Matches if collection size satisfies a nested matcher.

Constructor Summary

Constructors

Constructor	Description
IsCollectionWithSize(Matcher<? super Integer> sizeMatcher)	Constructor, best called from hasSize(int) or hasSize(Matcher).

Method Summary

Modifier and Type	Method	Description
protected Integer	featureValueOf(Collection<? extends E> actual)	Implement this to extract the interesting feature.
static <E> Matcher<Collection<? extends E>>	hasSize(int size)	Creates a matcher for Collections that matches when the size() method returns a value equal to the specified size.
static <E> Matcher<Collection<? extends E>>	hasSize(Matcher<? super Integer> sizeMatcher)	Creates a matcher for Collections that matches when the size() method returns a value that satisfies the specified matcher.

Methods inherited from class org.hamcrest.FeatureMatcher

describeTo, matchesSafely

Methods inherited from class org.hamcrest.TypeSafeDiagnosingMatcher

describeMismatch, matches

Methods inherited from class org.hamcrest.BaseMatcher

_dont_implement_Matcher___instead_extend_BaseMatcher_, isNotNull, toString

Methods inherited from class java.lang.Object

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

Constructor Details

IsCollectionWithSize

public IsCollectionWithSize(Matcher<? super Integer> sizeMatcher)

Constructor, best called from hasSize(int) or hasSize(Matcher).

Parameters:

sizeMatcher - the expected size

Method Details

featureValueOf

protected Integer featureValueOf(Collection<? extends E> actual)

Description copied from class: FeatureMatcher

Implement this to extract the interesting feature.

Specified by:

featureValueOf in class FeatureMatcher<Collection<? extends E>,Integer>

Parameters:

actual - the target object

Returns:

the feature to be matched

hasSize

public static <E> Matcher<Collection<? extends E>> hasSize(Matcher<? super Integer> sizeMatcher)

Creates a matcher for Collections that matches when the size() method returns a value that satisfies the specified matcher. For example:

assertThat(Arrays.asList("foo", "bar"), hasSize(equalTo(2)))

Type Parameters:

E - the matcher type.

Parameters:

sizeMatcher - a matcher for the size of an examined Collection

Returns:

The matcher.

hasSize

public static <E> Matcher<Collection<? extends E>> hasSize(int size)

Creates a matcher for Collections that matches when the size() method returns a value equal to the specified size. For example:

assertThat(Arrays.asList("foo", "bar"), hasSize(2))

Type Parameters:

E - the matcher type.

Parameters:

size - the expected size of an examined Collection

Returns:

The matcher.