anchor.diff:  @deprecated
   library analyzer.test.constant_test;
   
  +import 'package:analyzer/src/dart/analysis/experiments.dart';
   import 'package:analyzer/src/dart/element/element.dart';
   import 'package:analyzer/src/generated/constant.dart';
   import 'package:test/test.dart';
  
positive.code: 
  @reflectiveTest
  class ConstantEvaluatorTest extends PubPackageResolutionTest {
    test_bitAnd_int_int() async {
      await _assertValueInt(74 & 42, "74 & 42");
    }
  
negative.code:     await _assertValueInt(6, "2 * 3");
    }
  
    test_tripleShift() async {
      await _assertValueInt(16, "64 >>> 2");
    }
  
    test_truncatingDivide_double_double() async {
      await _assertValueInt(1, "3.2 ~/ 2.3");
    }
  