graphql-mocks/highlight/utils/validate.js

Tools for setting up graphql test resolvers

'use strict';

Object.defineProperty(exports, '__esModule', {
  value: true
});

var isTypeReference = require('./is-type-reference.js');

var isFieldReference = require('./is-field-reference.js');

var getTypeForReference = require('./get-type-for-reference.js');

var getFieldForReference = require('./get-field-for-reference.js');

function validate(schema, reference) {
  const referenceAsJSON = JSON.stringify(reference);

  if (!isTypeReference.isTypeReference(reference) && !isFieldReference.isFieldReference(reference)) {
    return new Error(`Reference ${referenceAsJSON} is not a valid type reference \`"TypeName"\` or valid field reference \`["TypeName", "fieldName"]\``);
  }

  if (isTypeReference.isTypeReference(reference) && !getTypeForReference.getTypeForReference(schema, reference)) {
    return new Error(`Type Reference ${referenceAsJSON} could not be found in the GraphQLSchema`);
  }

  if (isFieldReference.isFieldReference(reference) && !getFieldForReference.getFieldForReference(schema, reference)) {
    return new Error(`Field Reference ${referenceAsJSON} could not be found in the GraphQLSchema`);
  }

  return null;
}

class ValidationError extends Error {
  constructor(errors) {
    const mapped = errors.map(error => ` * ${error.message}`).join('\n');
    const message = `References failed validation with errors:\n${mapped}`;
    super(message);
  }

}

exports.ValidationError = ValidationError;
exports.validate = validate;
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