Package org.hamcrest.collection

Class IsEmptyIterable<E>

java.lang.Object
org.hamcrest.BaseMatcher<T>
org.hamcrest.TypeSafeMatcher<Iterable<? extends E>>
org.hamcrest.collection.IsEmptyIterable<E>
All Implemented Interfaces:
Matcher<Iterable<? extends E>>, SelfDescribing
public class IsEmptyIterable<E> extends TypeSafeMatcher<Iterable<? extends E>>
Tests if collection is empty.

  • Constructor Details

    • IsEmptyIterable

      public IsEmptyIterable()

  • Method Details

    • matchesSafely

      public boolean matchesSafely(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<Iterable<? extends E>>

    • describeMismatchSafely

      public void describeMismatchSafely(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<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<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<Iterable<E>> emptyIterableOf(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