@Test
public void testValidateBusinessObjectDefinitionKeyBusinessObjectDefinitionKeyIsNull()
{

    // Try to validate a null business object definition key.
    try
    {
        businessObjectDefinitionHelper.validateBusinessObjectDefinitionKey(null);
        fail();
    }
    catch (IllegalArgumentException e)
    {
        assertEquals("A business object definition key must be specified.", e.getMessage());
    }
}