@Test
    void testSearchChainToStringVeryShort() {
        assertEquals("chain 'test' [s1]", new Chain<>(new ComponentId("test"), createSearchers(1)).toString());
    }
Tests basic search chain functionality - creation, inheritance and ordering

@author bratseth
container-search/src/test/java/com/yahoo/search/searchchain/test/SearchChainTestCase.java