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