@Test
public void delta() {

  ContextURL contextURL = ContextURLParser.parse(URI.create("http://host/service/$metadata#Customers/$delta"));
  assertTrue(contextURL.isDelta());
  assertNull(contextURL.getSelectList());
  assertNull(contextURL.getNavOrPropertyPath());
  assertFalse(contextURL.isEntity());
  contextURL = ContextURLParser.parse(URI.create("http://host/service/$metadata#Customers/$deletedLink"));
  assertTrue(contextURL.isDeltaDeletedLink());
  assertNull(contextURL.getSelectList());
  assertNull(contextURL.getNavOrPropertyPath());
  assertFalse(contextURL.isEntity());
  contextURL = ContextURLParser.parse(URI.create("http://host/service/$metadata#Customers/$link"));
  assertTrue(contextURL.isDeltaLink());
  assertNull(contextURL.getSelectList());
  assertNull(contextURL.getNavOrPropertyPath());
  assertFalse(contextURL.isEntity());
  contextURL = ContextURLParser.parse(URI.create("http://host/service/$metadata#Customers/$deletedEntity"));
  assertTrue(contextURL.isDeltaDeletedEntity());
  assertNull(contextURL.getSelectList());
  assertNull(contextURL.getNavOrPropertyPath());
  assertFalse(contextURL.isEntity());
}