Config config = Config.fromKv("protocol", "p1", "host", "1.2.3.4", "port", "1010", "path", "path1", "ext2", "impl1");
UrlHolder holder = new UrlHolder();
holder.setUrl(config);
String echo = ext.echo(holder, "haha");
assertEquals("Ext2Impl1-echo", echo);
}
@Test
public void test_urlHolder_getAdaptiveExtension_noExtension() throws Exception {