package com.google.code.beanmatchers;
   
   import static java.util.Arrays.asList;
   
   import java.util.List;
   import org.hamcrest.Description;
   
   public class HasValidBeanHashCodeForMatcher<T> extends AbstractBeanHashCodeMatcher<T> {
     private final List<String> properties;
  
    HasValidBeanHashCodeForMatcher(TypeBasedValueGenerator valueGenerator, String... properties) {
      super(valueGenerator);
      this.properties = asList(properties);
    }
  
    @Override
    protected boolean matchesSafely(Class<T> beanType, Description mismatchDescription) {
      return super.hashCodeIsInfluencedByProperties(
          new JavaBean(beanType), properties, mismatchDescription);
    }
  
    @Override
    public void describeTo(Description description) {
      description.appendText("bean with the properties ");
      description.appendValue(properties);
      description.appendText(" influencing hashCode");
    }
  }