ValidationError GraphQL

test.js

import { GraphQLError } from 'graphql';

class ValidationError extends GraphQLError {
  constructor(errors) {
    super('The request is invalid.');
    this.state = errors.reduce((result, error) => {
      if (Object.prototype.hasOwnProperty.call(result, error.key)) {
        result[error.key].push(error.message);
      } else {
        result[error.key] = [error.message];
      }
      return result;
    }, {});
  }
}

export default ValidationError;

// However, this Jest test currently fails

describe("Errors", () => {
  it("should check equality on state", done => {
    expect(new ValidationError([{ key: "key", message: "test" }])).not.toEqual(
      new ValidationError()
    );
    done();
  });
});


```
  ● Errors › should check equality on state

    expect(received).not.toEqual(expected)

    Expected value to not equal:
      [GraphQLError: The request is invalid.]
    Received:
      [GraphQLError: The request is invalid.]

       5 |     expect(
       6 |       new ValidationError([{ key: "key", message: "test" }])
    >  7 |     ).not.toEqual(new ValidationError);
       8 |     done();
       9 |   });
      10 | });

      at Object.done (__test__/modules/Errors.test.js:7:9)
```


// gross workaround

class ValidationError extends GraphQLError {
  constructor(errors=[]) {
    let state = errors.reduce((result, error) => {
      if (Object.prototype.hasOwnProperty.call(result, error.key)) {
        result[error.key].push(error.message);
      } else {
        result[error.key] = [error.message];
      }
      return result;
    }, {});
    super("The request is invalid. " + JSON.stringify(state));
    this.state = state;
  }
}