Package org.hamcrest.text

Class IsEmptyString

  • All Implemented Interfaces:
    Matcher<java.lang.String>, SelfDescribing
    public final class IsEmptyString
extends BaseMatcher<java.lang.String>
    Matches empty Strings (and null).

    • Constructor Detail

      • IsEmptyString

        public IsEmptyString()

    • Method Detail

      • matches

        public boolean matches​(java.lang.Object item)
        Description copied from interface: Matcher
        Evaluates the matcher for argument item.

        This method matches against Object, instead of the generic type T. This is because the caller of the Matcher does not know at runtime what the type is (because of type erasure with Java generics). It is down to the implementations to check the correct type.

        Parameters:
        item - the object against which the matcher is evaluated.
        Returns:
        true if item matches, otherwise false.
        See Also:
        BaseMatcher

      • 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.

      • isEmptyString

        public static Matcher<java.lang.String> isEmptyString()
        Creates a matcher of String that matches when the examined string has zero length.

        For example: 

        assertThat("", isEmptyString())

      • isEmptyOrNullString

        public static Matcher<java.lang.String> isEmptyOrNullString()
        Creates a matcher of String that matches when the examined string is null, or has zero length.

        For example: 

        assertThat(((String)null), isEmptyString())