anchor.diff:      expect(unlinkedUnits[0].imports[0].combinators[0].hides, hasLength(2));
       expect(unlinkedUnits[0].imports[0].combinators[0].hides[0], 'Future');
       expect(unlinkedUnits[0].imports[0].combinators[0].hides[1], 'Stream');
  -    if (includeInformative) {
  -      expect(unlinkedUnits[0].imports[0].combinators[0].offset, 0);
  -      expect(unlinkedUnits[0].imports[0].combinators[0].end, 0);
  -    }
  +    expect(unlinkedUnits[0].imports[0].combinators[0].offset, 0);
  +    expect(unlinkedUnits[0].imports[0].combinators[0].end, 0);
     }
   
     test_import_implicit() {
  
positive.code:     String text = 'typedef F();';
      UnlinkedTypedef type = serializeTypedefText(text);
      expect(type.name, 'F');
      if (includeInformative) {
        expect(type.nameOffset, text.indexOf('F'));
      }
      expect(unlinkedUnits[0].publicNamespace.names, hasLength(1));
      expect(
          unlinkedUnits[0].publicNamespace.names[0].kind, ReferenceKind.typedef);
  
negative.code:     String text = 'enum E { v1 }';
      UnlinkedEnum e = serializeEnumText(text);
      expect(e.name, 'E');
      expect(e.nameOffset, text.indexOf('E'));
      expect(e.values, hasLength(1));
      expect(e.values[0].name, 'v1');
      expect(e.values[0].nameOffset, text.indexOf('v1'));
      _assertCodeRange(e.codeRange, 0, 13);
      expect(unlinkedUnits[0].publicNamespace.names, hasLength(1));
      expect(unlinkedUnits[0].publicNamespace.names[0].kind,
          ReferenceKind.classOrEnum);
  