@Test
public void testGetExcerptWhenReferrerIsUnavailable() throws Exception {

	Mockito.when(
		_http.URLtoString(_SOURCE_URI)
	).thenThrow(
		IOException.class
	);
	execute();
	verifyFault(
		PingbackMethodImpl.SOURCE_URI_DOES_NOT_EXIST,
		"Error accessing source URI");
}