final FessXpathTransformer transformer = new FessXpathTransformer();
        final URL value = transformer.getURL("http://example.com/", "://cdn.example.com/file.js");
        assertNotNull(value);
        assertEquals("http://cdn.example.com/file.js", value.toExternalForm());
    }

    @Test
    public void test_getURL_withRelativePath() throws Exception {