@Test
void mapNameSpaceExact() {

    NameSpaceMapping oneNsMapping = NameSpaceMappingBuilder.of("a.b","").withExact(true);
    List<NameSpaceMapping> oneMapping = Collections.singletonList(oneNsMapping);
    SimpleNameSpaceMapper snsm = new SimpleNameSpaceMapper(oneMapping);
    assertEquals(snsm.mapNameSpace("a.b"),"");
    assertEquals(snsm.mapNameSpace("a.b.c"),"a.b.c");
    assertEquals(snsm.mapNameSpace("a.d"),"a.d");
    assertEquals(snsm.mapNameSpace(""),"");
}