Package org.hamcrest.text

Class IsBlankString

java.lang.Object
org.hamcrest.BaseMatcher<String>
org.hamcrest.TypeSafeMatcher<String>
org.hamcrest.text.IsBlankString
All Implemented Interfaces:
Matcher<String>, SelfDescribing
public final class IsBlankString extends TypeSafeMatcher<String>
Matches blank Strings (and null).

  • Field Details

    • BLANK_INSTANCE

      private static final IsBlankString BLANK_INSTANCE

    • NULL_OR_BLANK_INSTANCE

      private static final Matcher<String> NULL_OR_BLANK_INSTANCE

    • REGEX_WHITESPACE

      private static final Pattern REGEX_WHITESPACE

  • Constructor Details

    • IsBlankString

      private IsBlankString()

  • Method Details

    • matchesSafely

      public boolean matchesSafely(String 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<String>

    • 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.

    • blankString

      public static Matcher<String> blankString()
      Creates a matcher of String that matches when the examined string contains zero or more whitespace characters and nothing else. For example: 
      assertThat("  ", is(blankString()))

    • blankOrNullString

      public static Matcher<String> blankOrNullString()
      Creates a matcher of String that matches when the examined string is null, or contains zero or more whitespace characters and nothing else. For example: 
      assertThat(((String)null), is(blankOrNullString()))