package mockit;
   
   import static org.junit.jupiter.api.Assertions.assertEquals;
   import static org.junit.jupiter.api.Assertions.assertTrue;
   
   import edu.umd.cs.findbugs.annotations.NonNull;
   
   import java.util.Date;
   
  import org.junit.jupiter.api.Test;
  
  /**
   * The Class NaturalOrderingTest.
   */
  final class NaturalOrderingTest {
  
      /**
       * Verify standard comparable behavior in mocked class.
       *
       * @param a
       *            the a
       * @param b
       *            the b
       */
      @Test
      void verifyStandardComparableBehaviorInMockedClass(@Mocked Date a, @Mocked Date b) {
          // noinspection EqualsWithItself
          assertEquals(0, a.compareTo(a));
          // noinspection EqualsWithItself
          assertEquals(0, b.compareTo(b));
  
          int aXb = a.compareTo(b);
          assertTrue(aXb != 0);
  
          int bXa = b.compareTo(a);
          assertTrue(bXa != 0);
  
          assertEquals(aXb, -bXa);
      }
  
      /**
       * The Class ComparableClass.
       */
      @SuppressWarnings("ComparableImplementedButEqualsNotOverridden")
      static final class ComparableClass implements Comparable<String> {
  
          /** The value. */
          final String value;
  
          /**
           * Instantiates a new comparable class.
           *
           * @param value
           *            the value
           */
          ComparableClass(String value) {
              this.value = value;
          }
  
          @Override
          public int compareTo(@NonNull String s) {
              return value.compareTo(s);
          }
      }
  
      /**
       * Mock override of compare to method.
       *
       * @param a
       *            the a
       * @param b
       *            the b
       */
      @Test
      void mockOverrideOfCompareToMethod(@Mocked final ComparableClass a, @Mocked final ComparableClass b) {
          new Expectations() {
              {
                  a.compareTo(null);
                  result = 5;
                  a.compareTo(anyString);
                  result = 123;
              }
          };
  
          new Expectations() {
              {
                  b.compareTo("test");
                  result = -50;
              }
          };
  
          assertEquals(5, a.compareTo(null));
          assertEquals(123, a.compareTo("test"));
          assertEquals(-50, b.compareTo("test"));
      }
  
      /**
       * Mock override of compare to method in JRE class.
       *
      * @param a
      *            the a
      * @param b
      *            the b
      */
     @Test
     void mockOverrideOfCompareToMethodInJREClass(@Mocked final Date a, @Mocked final Date b) {
         new Expectations() {
             {
                 a.compareTo(b);
                 result = 5;
             }
         };
 
         assertEquals(5, a.compareTo(b));
         assertTrue(b.compareTo(a) != 0);
 
         new Verifications() {
             {
                 a.compareTo((Date) any);
                 b.compareTo(a);
             }
         };
     }
 }