Schema.spec.js

'use strict';

var Config = require('../src/Config');
var SchemaController = require('../src/Controllers/SchemaController');
var dd = require('deep-diff');

var config;

var hasAllPODobject = () => {
  var obj = new Parse.Object('HasAllPOD');
  obj.set('aNumber', 5);
  obj.set('aString', 'string');
  obj.set('aBool', true);
  obj.set('aDate', new Date());
  obj.set('aObject', {k1: 'value', k2: true, k3: 5});
  obj.set('aArray', ['contents', true, 5]);
  obj.set('aGeoPoint', new Parse.GeoPoint({latitude: 0, longitude: 0}));
  obj.set('aFile', new Parse.File('f.txt', { base64: 'V29ya2luZyBhdCBQYXJzZSBpcyBncmVhdCE=' }));
  return obj;
};

describe('SchemaController', () => {
  beforeEach(() => {
    config = new Config('test');
  });

  it('can validate one object', (done) => {
    config.database.loadSchema().then((schema) => {
      return schema.validateObject('TestObject', {a: 1, b: 'yo', c: false});
    }).then((schema) => {
      done();
    }, (error) => {
      jfail(error);
      done();
    });
  });

  it('can validate one object with dot notation', (done) => {
    config.database.loadSchema().then((schema) => {
      return schema.validateObject('TestObjectWithSubDoc', {x: false, y: 'YY', z: 1, 'aObject.k1': 'newValue'});
    }).then((schema) => {
      done();
    }, (error) => {
      jfail(error);
      done();
    });
  });

  it('can validate two objects in a row', (done) => {
    config.database.loadSchema().then((schema) => {
      return schema.validateObject('Foo', {x: true, y: 'yyy', z: 0});
    }).then((schema) => {
      return schema.validateObject('Foo', {x: false, y: 'YY', z: 1});
    }).then((schema) => {
      done();
    });
  });

  it('rejects inconsistent types', (done) => {
    config.database.loadSchema().then((schema) => {
      return schema.validateObject('Stuff', {bacon: 7});
    }).then((schema) => {
      return schema.validateObject('Stuff', {bacon: 'z'});
    }).then(() => {
      fail('expected invalidity');
      done();
    }, done);
  });

  it('updates when new fields are added', (done) => {
    config.database.loadSchema().then((schema) => {
      return schema.validateObject('Stuff', {bacon: 7});
    }).then((schema) => {
      return schema.validateObject('Stuff', {sausage: 8});
    }).then((schema) => {
      return schema.validateObject('Stuff', {sausage: 'ate'});
    }).then(() => {
      fail('expected invalidity');
      done();
    }, done);
  });

  it('class-level permissions test find', (done) => {
    config.database.loadSchema().then((schema) => {
      // Just to create a valid class
      return schema.validateObject('Stuff', {foo: 'bar'});
    }).then((schema) => {
      return schema.setPermissions('Stuff', {
        'find': {}
      });
    }).then((schema) => {
      var query = new Parse.Query('Stuff');
      return query.find();
    }).then((results) => {
      fail('Class permissions should have rejected this query.');
      done();
    }, (e) => {
      done();
    });
  });

  it('class-level permissions test user', (done) => {
    var user;
    createTestUser().then((u) => {
      user = u;
      return config.database.loadSchema();
    }).then((schema) => {
      // Just to create a valid class
      return schema.validateObject('Stuff', {foo: 'bar'});
    }).then((schema) => {
      var find = {};
      find[user.id] = true;
      return schema.setPermissions('Stuff', {
        'find': find
      });
    }).then((schema) => {
      var query = new Parse.Query('Stuff');
      return query.find();
    }).then((results) => {
      done();
    }, (e) => {
      fail('Class permissions should have allowed this query.');
      done();
    });
  });

  it('class-level permissions test get', (done) => {
    var obj;
    createTestUser()
    .then(user => {
      return config.database.loadSchema()
      // Create a valid class
      .then(schema => schema.validateObject('Stuff', {foo: 'bar'}))
      .then(schema => {
        var find = {};
        var get = {};
        get[user.id] = true;
        return schema.setPermissions('Stuff', {
          'create': {'*': true},
          'find': find,
          'get': get
        });
      }).then((schema) => {
        obj = new Parse.Object('Stuff');
        obj.set('foo', 'bar');
        return obj.save();
      }).then((o) => {
        obj = o;
        var query = new Parse.Query('Stuff');
        return query.find();
      }).then((results) => {
        fail('Class permissions should have rejected this query.');
        done();
      }, (e) => {
        var query = new Parse.Query('Stuff');
        return query.get(obj.id).then((o) => {
          done();
        }, (e) => {
          fail('Class permissions should have allowed this get query');
          done();
        });
      });
    });
  });

  it('can add classes without needing an object', done => {
    config.database.loadSchema()
    .then(schema => schema.addClassIfNotExists('NewClass', {
      foo: {type: 'String'}
    }))
    .then(actualSchema => {
      const expectedSchema = {
        className: 'NewClass',
        fields: {
          objectId: { type: 'String' },
          updatedAt: { type: 'Date' },
          createdAt: { type: 'Date' },
          ACL: { type: 'ACL' },
          foo: { type: 'String' },
        },
        classLevelPermissions: {
          find: { '*': true },
          get: { '*': true },
          create: { '*': true },
          update: { '*': true },
          delete: { '*': true },
          addField: { '*': true },
        },
      }
      expect(dd(actualSchema, expectedSchema)).toEqual(undefined);
      done();
    })
    .catch(error => {
      fail('Error creating class: ' + JSON.stringify(error));
    });
  });

  it('will fail to create a class if that class was already created by an object', done => {
    config.database.loadSchema()
      .then(schema => {
        schema.validateObject('NewClass', { foo: 7 })
          .then(() => schema.reloadData())
          .then(() => schema.addClassIfNotExists('NewClass', {
            foo: { type: 'String' }
          }))
          .catch(error => {
            expect(error.code).toEqual(Parse.Error.INVALID_CLASS_NAME);
            expect(error.message).toEqual('Class NewClass already exists.');
            done();
          });
      });
  });

  it('will resolve class creation races appropriately', done => {
    // If two callers race to create the same schema, the response to the
    // race loser should be the same as if they hadn't been racing.
    config.database.loadSchema()
    .then(schema => {
      var p1 = schema.addClassIfNotExists('NewClass', {foo: {type: 'String'}});
      var p2 = schema.addClassIfNotExists('NewClass', {foo: {type: 'String'}});
      Promise.race([p1, p2])
      .then(actualSchema => {
        const expectedSchema = {
          className: 'NewClass',
          fields: {
            objectId: { type: 'String' },
            updatedAt: { type: 'Date' },
            createdAt: { type: 'Date' },
            ACL: { type: 'ACL' },
            foo: { type: 'String' },
          },
          classLevelPermissions: {
            find: { '*': true },
            get: { '*': true },
            create: { '*': true },
            update: { '*': true },
            delete: { '*': true },
            addField: { '*': true },
          },
        }
        expect(dd(actualSchema, expectedSchema)).toEqual(undefined);
      });
      Promise.all([p1,p2])
      .catch(error => {
        expect(error.code).toEqual(Parse.Error.INVALID_CLASS_NAME);
        expect(error.message).toEqual('Class NewClass already exists.');
        done();
      });
    });
  });

  it('refuses to create classes with invalid names', done => {
    config.database.loadSchema()
    .then(schema => {
      schema.addClassIfNotExists('_InvalidName', {foo: {type: 'String'}})
      .catch(error => {
        expect(error.error).toEqual(
          'Invalid classname: _InvalidName, classnames can only have alphanumeric characters and _, and must start with an alpha character '
        );
        done();
      });
    });
  });

  it('refuses to add fields with invalid names', done => {
    config.database.loadSchema()
    .then(schema => schema.addClassIfNotExists('NewClass', {'0InvalidName': {type: 'String'}}))
    .catch(error => {
      expect(error.code).toEqual(Parse.Error.INVALID_KEY_NAME);
      expect(error.error).toEqual('invalid field name: 0InvalidName');
      done();
    });
  });

  it('refuses to explicitly create the default fields for custom classes', done => {
    config.database.loadSchema()
    .then(schema => schema.addClassIfNotExists('NewClass', {objectId: {type: 'String'}}))
    .catch(error => {
      expect(error.code).toEqual(136);
      expect(error.error).toEqual('field objectId cannot be added');
      done();
    });
  });

  it('refuses to explicitly create the default fields for non-custom classes', done => {
    config.database.loadSchema()
    .then(schema => schema.addClassIfNotExists('_Installation', {localeIdentifier: {type: 'String'}}))
    .catch(error => {
      expect(error.code).toEqual(136);
      expect(error.error).toEqual('field localeIdentifier cannot be added');
      done();
    });
  });

  it('refuses to add fields with invalid types', done => {
    config.database.loadSchema()
    .then(schema => schema.addClassIfNotExists('NewClass', {
      foo: {type: 7}
    }))
    .catch(error => {
      expect(error.code).toEqual(Parse.Error.INVALID_JSON);
      expect(error.error).toEqual('invalid JSON');
      done();
    });
  });

  it('refuses to add fields with invalid pointer types', done => {
    config.database.loadSchema()
    .then(schema => schema.addClassIfNotExists('NewClass', {
      foo: {type: 'Pointer'}
    }))
    .catch(error => {
      expect(error.code).toEqual(135);
      expect(error.error).toEqual('type Pointer needs a class name');
      done();
    });
  });

  it('refuses to add fields with invalid pointer target', done => {
    config.database.loadSchema()
    .then(schema => schema.addClassIfNotExists('NewClass', {
      foo: {type: 'Pointer', targetClass: 7},
    }))
    .catch(error => {
      expect(error.code).toEqual(Parse.Error.INVALID_JSON);
      expect(error.error).toEqual('invalid JSON');
      done();
    });
  });

  it('refuses to add fields with invalid Relation type', done => {
    config.database.loadSchema()
    .then(schema => schema.addClassIfNotExists('NewClass', {
      foo: {type: 'Relation', uselessKey: 7},
    }))
    .catch(error => {
      expect(error.code).toEqual(135);
      expect(error.error).toEqual('type Relation needs a class name');
      done();
    });
  });

  it('refuses to add fields with invalid relation target', done => {
    config.database.loadSchema()
    .then(schema => schema.addClassIfNotExists('NewClass', {
      foo: {type: 'Relation', targetClass: 7},
    }))
    .catch(error => {
      expect(error.code).toEqual(Parse.Error.INVALID_JSON);
      expect(error.error).toEqual('invalid JSON');
      done();
    });
  });

  it('refuses to add fields with uncreatable pointer target class', done => {
    config.database.loadSchema()
    .then(schema => schema.addClassIfNotExists('NewClass', {
      foo: {type: 'Pointer', targetClass: 'not a valid class name'},
    }))
    .catch(error => {
      expect(error.code).toEqual(Parse.Error.INVALID_CLASS_NAME);
      expect(error.error).toEqual('Invalid classname: not a valid class name, classnames can only have alphanumeric characters and _, and must start with an alpha character ');
      done();
    });
  });

  it('refuses to add fields with uncreatable relation target class', done => {
    config.database.loadSchema()
    .then(schema => schema.addClassIfNotExists('NewClass', {
      foo: {type: 'Relation', targetClass: 'not a valid class name'},
    }))
    .catch(error => {
      expect(error.code).toEqual(Parse.Error.INVALID_CLASS_NAME);
      expect(error.error).toEqual('Invalid classname: not a valid class name, classnames can only have alphanumeric characters and _, and must start with an alpha character ');
      done();
    });
  });

  it('refuses to add fields with unknown types', done => {
    config.database.loadSchema()
    .then(schema => schema.addClassIfNotExists('NewClass', {
      foo: {type: 'Unknown'},
    }))
    .catch(error => {
      expect(error.code).toEqual(Parse.Error.INCORRECT_TYPE);
      expect(error.error).toEqual('invalid field type: Unknown');
      done();
    });
  });

  it('will create classes', done => {
    config.database.loadSchema()
    .then(schema => schema.addClassIfNotExists('NewClass', {
      aNumber: {type: 'Number'},
      aString: {type: 'String'},
      aBool: {type: 'Boolean'},
      aDate: {type: 'Date'},
      aObject: {type: 'Object'},
      aArray: {type: 'Array'},
      aGeoPoint: {type: 'GeoPoint'},
      aFile: {type: 'File'},
      aPointer: {type: 'Pointer', targetClass: 'ThisClassDoesNotExistYet'},
      aRelation: {type: 'Relation', targetClass: 'NewClass'},
    }))
    .then(actualSchema => {
      const expectedSchema = {
        className: 'NewClass',
        fields: {
          objectId: { type: 'String' },
          updatedAt: { type: 'Date' },
          createdAt: { type: 'Date' },
          ACL: { type: 'ACL' },
          aString: { type: 'String' },
          aNumber: { type: 'Number' },
          aString: { type: 'String' },
          aBool: { type: 'Boolean' },
          aDate: { type: 'Date' },
          aObject: { type: 'Object' },
          aArray: { type: 'Array' },
          aGeoPoint: { type: 'GeoPoint' },
          aFile: { type: 'File' },
          aPointer: { type: 'Pointer', targetClass: 'ThisClassDoesNotExistYet' },
          aRelation: { type: 'Relation', targetClass: 'NewClass' },
        },
        classLevelPermissions: {
          find: { '*': true },
          get: { '*': true },
          create: { '*': true },
          update: { '*': true },
          delete: { '*': true },
          addField: { '*': true },
        },
      }
      expect(dd(actualSchema, expectedSchema)).toEqual(undefined);
      done();
    });
  });

  it('creates the default fields for non-custom classes', done => {
    config.database.loadSchema()
    .then(schema => schema.addClassIfNotExists('_Installation', {
      foo: {type: 'Number'},
    }))
    .then(actualSchema => {
      const expectedSchema = {
        className: '_Installation',
        fields: {
          objectId: { type: 'String' },
          updatedAt: { type: 'Date' },
          createdAt: { type: 'Date' },
          ACL: { type: 'ACL' },
          foo: { type: 'Number' },
          installationId: { type: 'String' },
          deviceToken: { type: 'String' },
          channels: { type: 'Array' },
          deviceType: { type: 'String' },
          pushType: { type: 'String' },
          GCMSenderId: { type: 'String' },
          timeZone: { type: 'String' },
          localeIdentifier: { type: 'String' },
          badge: { type: 'Number' },
          appVersion: { type: 'String' },
          appName: { type: 'String' },
          appIdentifier: { type: 'String' },
          parseVersion: { type: 'String' },
        },
        classLevelPermissions: {
          find: { '*': true },
          get: { '*': true },
          create: { '*': true },
          update: { '*': true },
          delete: { '*': true },
          addField: { '*': true },
        },
      }
      expect(dd(actualSchema, expectedSchema)).toEqual(undefined);
      done();
    });
  });

  it('creates non-custom classes which include relation field', done => {
    config.database.loadSchema()
    .then(schema => schema.addClassIfNotExists('_Role', {}))
    .then(actualSchema => {
      const expectedSchema = {
        className: '_Role',
        fields: {
          objectId: { type: 'String' },
          updatedAt: { type: 'Date' },
          createdAt: { type: 'Date' },
          ACL: { type: 'ACL' },
          name: { type: 'String' },
          users: { type: 'Relation', targetClass: '_User' },
          roles: { type: 'Relation', targetClass: '_Role' },
        },
        classLevelPermissions: {
          find: { '*': true },
          get: { '*': true },
          create: { '*': true },
          update: { '*': true },
          delete: { '*': true },
          addField: { '*': true },
        },
      };
      expect(dd(actualSchema, expectedSchema)).toEqual(undefined);
      done();
    });
  });

  it('creates non-custom classes which include pointer field', done => {
    config.database.loadSchema()
    .then(schema => schema.addClassIfNotExists('_Session', {}))
    .then(actualSchema => {
      const expectedSchema = {
        className: '_Session',
        fields: {
          objectId: { type: 'String' },
          updatedAt: { type: 'Date' },
          createdAt: { type: 'Date' },
          restricted: { type: 'Boolean' },
          user: { type: 'Pointer', targetClass: '_User' },
          installationId: { type: 'String' },
          sessionToken: { type: 'String' },
          expiresAt: { type: 'Date' },
          createdWith: { type: 'Object' },
          ACL: { type: 'ACL' },
        },
        classLevelPermissions: {
          find: { '*': true },
          get: { '*': true },
          create: { '*': true },
          update: { '*': true },
          delete: { '*': true },
          addField: { '*': true },
        },
      };
      expect(dd(actualSchema, expectedSchema)).toEqual(undefined);
      done();
    });
  });

  it('refuses to create two geopoints', done => {
    config.database.loadSchema()
    .then(schema => schema.addClassIfNotExists('NewClass', {
      geo1: {type: 'GeoPoint'},
      geo2: {type: 'GeoPoint'}
    }))
    .catch(error => {
      expect(error.code).toEqual(Parse.Error.INCORRECT_TYPE);
      expect(error.error).toEqual('currently, only one GeoPoint field may exist in an object. Adding geo2 when geo1 already exists.');
      done();
    });
  });

  it('can check if a class exists', done => {
    config.database.loadSchema()
    .then(schema => {
      return schema.addClassIfNotExists('NewClass', {})
      .then(() => {
        schema.hasClass('NewClass')
        .then(hasClass => {
          expect(hasClass).toEqual(true);
          done();
        })
        .catch(fail);

        schema.hasClass('NonexistantClass')
        .then(hasClass => {
          expect(hasClass).toEqual(false);
          done();
        })
        .catch(fail);
      })
      .catch(error => {
        fail('Couldn\'t create class');
        jfail(error);
      });
    })
    .catch(error => fail('Couldn\'t load schema'));
  });

  it('refuses to delete fields from invalid class names', done => {
    config.database.loadSchema()
    .then(schema => schema.deleteField('fieldName', 'invalid class name'))
    .catch(error => {
      expect(error.code).toEqual(Parse.Error.INVALID_CLASS_NAME);
      done();
    });
  });

  it('refuses to delete invalid fields', done => {
    config.database.loadSchema()
    .then(schema => schema.deleteField('invalid field name', 'ValidClassName'))
    .catch(error => {
      expect(error.code).toEqual(Parse.Error.INVALID_KEY_NAME);
      done();
    });
  });

  it('refuses to delete the default fields', done => {
    config.database.loadSchema()
    .then(schema => schema.deleteField('installationId', '_Installation'))
    .catch(error => {
      expect(error.code).toEqual(136);
      expect(error.message).toEqual('field installationId cannot be changed');
      done();
    });
  });

  it('refuses to delete fields from nonexistant classes', done => {
    config.database.loadSchema()
    .then(schema => schema.deleteField('field', 'NoClass'))
    .catch(error => {
      expect(error.code).toEqual(Parse.Error.INVALID_CLASS_NAME);
      expect(error.message).toEqual('Class NoClass does not exist.');
      done();
    });
  });

  it('refuses to delete fields that dont exist', done => {
    hasAllPODobject().save()
    .then(() => config.database.loadSchema())
    .then(schema => schema.deleteField('missingField', 'HasAllPOD'))
    .fail(error => {
      expect(error.code).toEqual(255);
      expect(error.message).toEqual('Field missingField does not exist, cannot delete.');
      done();
    });
  });

  it('drops related collection when deleting relation field', done => {
    var obj1 = hasAllPODobject();
    obj1.save()
      .then(savedObj1 => {
        var obj2 = new Parse.Object('HasPointersAndRelations');
        obj2.set('aPointer', savedObj1);
        var relation = obj2.relation('aRelation');
        relation.add(obj1);
        return obj2.save();
      })
      .then(() => config.database.collectionExists('_Join:aRelation:HasPointersAndRelations'))
      .then(exists => {
        if (!exists) {
          fail('Relation collection ' +
            'should exist after save.');
        }
      })
      .then(() => config.database.loadSchema())
      .then(schema => schema.deleteField('aRelation', 'HasPointersAndRelations', config.database))
      .then(() => config.database.collectionExists('_Join:aRelation:HasPointersAndRelations'))
      .then(exists => {
        if (exists) {
          fail('Relation collection should not exist after deleting relation field.');
        }
        done();
      }, error => {
        jfail(error);
        done();
      });
  });

  it('can delete relation field when related _Join collection not exist', done => {
    config.database.loadSchema()
    .then(schema => {
      schema.addClassIfNotExists('NewClass', {
        relationField: {type: 'Relation', targetClass: '_User'}
      })
      .then(actualSchema => {
        const expectedSchema = {
          className: 'NewClass',
          fields: {
            objectId: { type: 'String' },
            updatedAt: { type: 'Date' },
            createdAt: { type: 'Date' },
            ACL: { type: 'ACL' },
            relationField: { type: 'Relation', targetClass: '_User' },
          },
          classLevelPermissions: {
            find: { '*': true },
            get: { '*': true },
            create: { '*': true },
            update: { '*': true },
            delete: { '*': true },
            addField: { '*': true },
          },
        };
        expect(dd(actualSchema, expectedSchema)).toEqual(undefined);
      })
      .then(() => config.database.collectionExists('_Join:relationField:NewClass'))
      .then(exist => {
        on_db('postgres', () => {
          // We create the table when creating the column
          expect(exist).toEqual(true);
        }, () => {
          expect(exist).toEqual(false);
        });
        
      })
      .then(() => schema.deleteField('relationField', 'NewClass', config.database))
      .then(() => schema.reloadData())
      .then(() => {
        const expectedSchema = {
          objectId: { type: 'String' },
          updatedAt: { type: 'Date' },
          createdAt: { type: 'Date' },
          ACL: { type: 'ACL' },
        };
        expect(dd(schema.data.NewClass, expectedSchema)).toEqual(undefined);
        done();
      });
    });
  });

  it('can delete string fields and resave as number field', done => {
    Parse.Object.disableSingleInstance();
    var obj1 = hasAllPODobject();
    var obj2 = hasAllPODobject();
    var p = Parse.Object.saveAll([obj1, obj2])
    .then(() => config.database.loadSchema())
    .then(schema => schema.deleteField('aString', 'HasAllPOD', config.database))
    .then(() => new Parse.Query('HasAllPOD').get(obj1.id))
    .then(obj1Reloaded => {
      expect(obj1Reloaded.get('aString')).toEqual(undefined);
      obj1Reloaded.set('aString', ['not a string', 'this time']);
      obj1Reloaded.save()
      .then(obj1reloadedAgain => {
        expect(obj1reloadedAgain.get('aString')).toEqual(['not a string', 'this time']);
        return new Parse.Query('HasAllPOD').get(obj2.id);
      })
      .then(obj2reloaded => {
        expect(obj2reloaded.get('aString')).toEqual(undefined);
        done();
        Parse.Object.enableSingleInstance();
      });
    })
    .catch(error => {
      jfail(error);
      done();
    });
  });

  it('can delete pointer fields and resave as string', done => {
    Parse.Object.disableSingleInstance();
    var obj1 = new Parse.Object('NewClass');
    obj1.save()
    .then(() => {
      obj1.set('aPointer', obj1);
      return obj1.save();
    })
    .then(obj1 => {
      expect(obj1.get('aPointer').id).toEqual(obj1.id);
    })
    .then(() => config.database.loadSchema())
    .then(schema => schema.deleteField('aPointer', 'NewClass', config.database))
    .then(() => new Parse.Query('NewClass').get(obj1.id))
    .then(obj1 => {
      expect(obj1.get('aPointer')).toEqual(undefined);
      obj1.set('aPointer', 'Now a string');
      return obj1.save();
    })
    .then(obj1 => {
      expect(obj1.get('aPointer')).toEqual('Now a string');
      done();
      Parse.Object.enableSingleInstance();
    });
  });

  it('can merge schemas', done => {
    expect(SchemaController.buildMergedSchemaObject({
      _id: 'SomeClass',
      someType: { type: 'Number' }
    }, {
      newType: {type: 'Number'}
    })).toEqual({
      someType: {type: 'Number'},
      newType: {type: 'Number'},
    });
    done();
  });

  it('can merge deletions', done => {
    expect(SchemaController.buildMergedSchemaObject({
      _id: 'SomeClass',
      someType: { type: 'Number' },
      outDatedType: { type: 'String' },
    },{
      newType: {type: 'GeoPoint'},
      outDatedType: {__op: 'Delete'},
    })).toEqual({
      someType: {type: 'Number'},
      newType: {type: 'GeoPoint'},
    });
    done();
  });

  it('ignore default field when merge with system class', done => {
    expect(SchemaController.buildMergedSchemaObject({
      _id: '_User',
      username: { type: 'String' },
      password: { type: 'String' },
      email: { type: 'String' },
      emailVerified: { type: 'Boolean' },
    },{
      emailVerified: { type: 'String' },
      customField: { type: 'String' },
    })).toEqual({
      customField: { type: 'String' }
    });
    done();
  });

  it('yields a proper schema mismatch error (#2661)', done => {
    let anObject = new Parse.Object('AnObject');
    let anotherObject = new Parse.Object('AnotherObject');
    let someObject = new Parse.Object('SomeObject');
    Parse.Object.saveAll([anObject, anotherObject, someObject]).then(() => {
      anObject.set('pointer', anotherObject);
      return anObject.save();
    }).then(() => {
      anObject.set('pointer', someObject);
      return anObject.save();
    }).then(() => {
      fail('shoud not save correctly');
      done();
    }, (err) => {
      expect(err instanceof Parse.Error).toBeTruthy();
      expect(err.message).toEqual('schema mismatch for AnObject.pointer; expected Pointer<AnotherObject> but got Pointer<SomeObject>')
      done();
    });
  });

  it('yields a proper schema mismatch error bis (#2661)', done => {
    let anObject = new Parse.Object('AnObject');
    let someObject = new Parse.Object('SomeObject');
    Parse.Object.saveAll([anObject, someObject]).then(() => {
      anObject.set('number', 1);
      return anObject.save();
    }).then(() => {
      anObject.set('number', someObject);
      return anObject.save();
    }).then(() => {
      fail('shoud not save correctly');
      done();
    }, (err) => {
      expect(err instanceof Parse.Error).toBeTruthy();
      expect(err.message).toEqual('schema mismatch for AnObject.number; expected Number but got Pointer<SomeObject>')
      done();
    });
  });

  it('yields a proper schema mismatch error ter (#2661)', done => {
    let anObject = new Parse.Object('AnObject');
    let someObject = new Parse.Object('SomeObject');
    Parse.Object.saveAll([anObject, someObject]).then(() => {
      anObject.set('pointer', someObject);
      return anObject.save();
    }).then(() => {
      anObject.set('pointer', 1);
      return anObject.save();
    }).then(() => {
      fail('shoud not save correctly');
      done();
    }, (err) => {
      expect(err instanceof Parse.Error).toBeTruthy();
      expect(err.message).toEqual('schema mismatch for AnObject.pointer; expected Pointer<SomeObject> but got Number')
      done();
    });
  });
});