package com.atlassian.plugins.rest.common.expand.resolver;
   
   import com.atlassian.plugins.rest.common.expand.ExpandConstraint;
   import com.atlassian.plugins.rest.common.expand.parameter.Indexes;
   import static org.junit.Assert.*;
   import org.junit.Before;
   import org.junit.Test;
   
   /**
   * Testing {@link ExpandConstraintEntityExpanderResolver}
   */
  public class ExpandConstraintEntityExpanderResolverTest
  {
      private ExpandConstraintEntityExpanderResolver resolver;
  
      @Before
      public void setUp() throws Exception
      {
          resolver = new ExpandConstraintEntityExpanderResolver();
      }
  
      @Test
      public void testHasExpanderWithNullClass()
      {
          try
          {
              final Class clazz = null;
              resolver.hasExpander(clazz);
              fail();
          }
          catch (NullPointerException e)
          {
              // expected
          }
      }
  
      @Test
      public void testGetExpanderWithNullClass()
      {
          try
          {
              final Class clazz = null;
              resolver.getExpander(clazz);
              fail();
          }
          catch (NullPointerException e)
          {
              // expected
          }
      }
  
      @Test
      public void testHasExpanderWithClassForObjectWithNoConstraintMethod()
      {
          assertFalse(resolver.hasExpander(Object.class));
      }
  
      @Test
      public void testGetExpanderWithClassForObjectWithNoConstraintMethod()
      {
          assertNull(resolver.getExpander(Object.class));
      }
  
      @Test
      public void testHasExpanderWithClassForClassWithConstraintMethod()
      {
          assertTrue(resolver.hasExpander(ClassWithConstraintMethod.class));
      }
  
      @Test
      public void testGetExpanderWithClassForClassWithConstraintMethod()
      {
          assertNotNull(resolver.getExpander(ClassWithConstraintMethod.class));
      }
  
      public static class ClassWithConstraintMethod
      {
          @ExpandConstraint
          public void expand(Indexes indexes)
          {
          }
      }
  }