@Test
public void testValidateGlobalAttributeDefinitionKeyMissingRequiredParameters()
{

    // Try to call the method under test.
    try
    {
        globalAttributeDefinitionHelper.validateGlobalAttributeDefinitionKey(null);
        fail();
    }
    catch (IllegalArgumentException e)
    {
        assertEquals("A global attribute definition key must be specified.", e.getMessage());
    }
    // Verify the external calls.
    verifyNoMoreInteractions(alternateKeyHelper);
}