String decoded = new String(BaseEncoding.base64().decode(encoded), StandardCharsets.UTF_8);

        assertEquals(originalString, decoded);
    }

    public void test_facet_constants() {
        // Test that the constants are available
        assertNotNull(Constants.FACET_FIELD_PREFIX);
        assertNotNull(Constants.FACET_QUERY_PREFIX);
        assertEquals("field:", Constants.FACET_FIELD_PREFIX);