anchor.diff:  // BSD-style license that can be found in the LICENSE file.
   
   @TestOn('vm')
  -
   import 'dart:io';
   
   import 'package:json_annotation/json_annotation.dart';
  
positive.code:           fail('parse should fail');
          } on CheckedFromJsonException catch (e) {
            final prettyOutput = _prettyPrintCheckedFromJsonException(e);
            printOnFailure(prettyOutput);
            expect(prettyOutput, entry.value);
          }
        });
  
negative.code: - b
  ''': r'''
  line 2, column 1 of file.yaml: Could not create `Config`. Unsupported value for `builders`.
    ╷
  2 │ ┌ - a
  3 │ └ - b
    ╵''',
    r'''
  builders:
    sample:
      defaultEnumTest: bob
  ''': r'''
  line 3, column 22 of file.yaml: Could not create `Builder`. Unsupported value for `defaultEnumTest`. `bob` is not one of the supported values: none, dependents, all_packages, root_package
    ╷
  3 │     defaultEnumTest: bob
    │                      ^^^
    ╵''',
    r'''
  builders:
    a:
      target: 42
    ''': r'''
  line 3, column 13 of file.yaml: Could not create `Builder`. Unsupported value for `target`.
    ╷
  3 │     target: 42
    │             ^^
    ╵''',
    r'''
  builders:
    a:
  