package com.atlassian.plugin.descriptors;
   
   import com.atlassian.plugin.ModuleDescriptor;
   import org.junit.Test;
   
   import static org.junit.Assert.assertEquals;
   import static org.mockito.Mockito.mock;
   import static org.mockito.Mockito.when;
   
  /**
   * Responsible for testing that the <tt>hashCode</tt> contract defined by
   * {@link com.atlassian.plugin.ModuleDescriptor#hashCode()} is fulfilled by the
   * {@link ModuleDescriptors.HashCodeBuilder} class.
   *
   * @since 2.8.0
   */
  public class TestModuleDescriptorsHashCodeBuilder {
  
      @Test
      public void testTheHashCodeOfADescriptorWithANullCompleteKeyShouldBeZero() {
          final ModuleDescriptor descriptor = mock(ModuleDescriptor.class);
          when(descriptor.getCompleteKey()).thenReturn(null);
  
          assertEquals(new ModuleDescriptors.HashCodeBuilder().descriptor(descriptor).toHashCode(), 0);
      }
  
      @Test
      public void testTheHashCodeOfADescriptorWithANonNullCompleteKeyIsEqualToTheHashCodeOfTheCompleteKey() {
          final ModuleDescriptor descriptor = mock(ModuleDescriptor.class);
          when(descriptor.getCompleteKey()).thenReturn("test-plugin:test-key");
  
          assertEquals(new ModuleDescriptors.HashCodeBuilder().descriptor(descriptor).toHashCode(),
                  descriptor.getCompleteKey().hashCode());
      }
  }