Package org.hamcrest

Class BaseMatcher<T>

java.lang.Object
org.hamcrest.BaseMatcher<T>
Type Parameters:
T - The Matcher type.
All Implemented Interfaces:
Matcher<T>, SelfDescribing
Direct Known Subclasses:
AnyOf, CustomMatcher, DescribedAs, DiagnosingMatcher, Is, IsAnything, IsEqual, IsIn, IsNot, IsNull, IsSame, TypeSafeDiagnosingMatcher, TypeSafeMatcher
public abstract class BaseMatcher<T> extends Object implements Matcher<T>
BaseClass for all Matcher implementations.
See Also:

  • Constructor Details

    • BaseMatcher

      public BaseMatcher()
      Default constructor.

  • Method Details

    • _dont_implement_Matcher___instead_extend_BaseMatcher_

      @Deprecated public final void _dont_implement_Matcher___instead_extend_BaseMatcher_()
      Deprecated.
      Description copied from interface: Matcher
      This method simply acts a friendly reminder not to implement Matcher directly and instead extend BaseMatcher. It's easy to ignore JavaDoc, but a bit harder to ignore compile errors .
      Specified by:
      _dont_implement_Matcher___instead_extend_BaseMatcher_ in interface Matcher<T>
      See Also:

    • describeMismatch

      public void describeMismatch(Object item, Description description)
      Description copied from interface: Matcher
      Generate a description of why the matcher has not accepted the item. The description will be part of a larger description of why a matching failed, so it should be concise. This method assumes that matches(item) is false, but will not check this.
      Specified by:
      describeMismatch in interface Matcher<T>
      Parameters:
      item - The item that the Matcher has rejected.
      description - The description to be built or appended to.

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • isNotNull

      protected static boolean isNotNull(Object actual, Description mismatch)
      Useful null-check method. Writes a mismatch description if the actual object is null
      Parameters:
      actual - the object to check
      mismatch - where to write the mismatch description, if any
      Returns:
      false iff the actual object is null