Class IsEmptyCollection<E>

  • All Implemented Interfaces:
    Matcher<java.util.Collection<? extends E>>, SelfDescribing

    public class IsEmptyCollection<E>
    extends TypeSafeMatcher<java.util.Collection<? extends E>>
    Tests if collection is empty.
    • Constructor Detail

      • IsEmptyCollection

        public IsEmptyCollection()
    • Method Detail

      • matchesSafely

        public boolean matchesSafely​(java.util.Collection<? extends E> item)
        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.util.Collection<? extends E>>
      • describeMismatchSafely

        public void describeMismatchSafely​(java.util.Collection<? extends E> item,
                                           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.util.Collection<? 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.
      • empty

        public static <E> Matcher<java.util.Collection<? extends E>> empty()
        Creates a matcher for Collections matching examined collections whose isEmpty method returns true.

        For example:

        assertThat(new ArrayList<String>(), is(empty()))
      • emptyCollectionOf

        public static <E> Matcher<java.util.Collection<E>> emptyCollectionOf​(java.lang.Class<E> type)
        Creates a matcher for Collections matching examined collections whose isEmpty method returns true.

        For example:

        assertThat(new ArrayList<String>(), is(emptyCollectionOf(String.class)))
        Parameters:
        type - the type of the collection's content