anchor.diff:          '''
   fff() => 42;
   ''');
  -  }
  -
  -  test_convertToExpressionBody_wrong_already() async {
  -    resolveTestUnit('''
  -fff() => 42;
  -''');
  -    await assertNoAssistAt(
  -        'fff()', DartAssistKind.CONVERT_INTO_EXPRESSION_BODY);
  -  }
  -
  -  test_convertToExpressionBody_wrong_moreThanOneStatement() async {
  -    resolveTestUnit('''
  -fff() {
  -  var v = 42;
  -  return v;
  -}
  -''');
  -    await assertNoAssistAt(
  -        'fff()', DartAssistKind.CONVERT_INTO_EXPRESSION_BODY);
  -  }
  -
  -  test_convertToExpressionBody_wrong_noEnclosingFunction() async {
  -    resolveTestUnit('''
  -var V = 42;
  -''');
  -    await assertNoAssistAt('V = ', DartAssistKind.CONVERT_INTO_EXPRESSION_BODY);
  -  }
  -
  -  test_convertToExpressionBody_wrong_noReturn() async {
  -    resolveTestUnit('''
  -fff() {
  -  var v = 42;
  -}
  -''');
  -    await assertNoAssistAt(
  -        'fff()', DartAssistKind.CONVERT_INTO_EXPRESSION_BODY);
  -  }
  -
  -  test_convertToExpressionBody_wrong_noReturnValue() async {
  -    resolveTestUnit('''
  -fff() {
  -  return;
  -}
  -''');
  -    await assertNoAssistAt(
  -        'fff()', DartAssistKind.CONVERT_INTO_EXPRESSION_BODY);
     }
   
     test_convertToFieldParameter_BAD_additionalUse() async {
  
positive.code: ''');
    }
  
    test_convertToIsNot_OK_childOfIs_left() async {
      resolveTestUnit('''
  main(p) {
  
negative.code: ''');
    }
  
    test_importAddShow_BAD_hasShow() async {
      resolveTestUnit('''
  import 'dart:math' show PI;
  