@dannybster/coco-the-bear-http-errors/test/error-handler-tests.js

A collection of error objects that represent http response objects for CoCo The Bear.

const errorHandler = require('../src/error-handler');
const module401 = require('../src/401-unauthorized-error');
const module404 = require('../src/404-not-found-error');
const module503 = require('../src/503-service-unavailable-error');
const testUtils = require('@dannybster/coco-the-bear-test-utils');

const errorModules = [
  {
    name: 'UNAUTHORIZED',
    status: 401,
    module: module401,
  },
  {
    name: 'NOT FOUND',
    status: 404,
    module: module404,
  },
  {
    name: 'SERVICE UNAVAILABLE',
    status: 503,
    module: module503,
  },
];

describe('error-handler.js', function () {
  describe('If the error handler is called with a non http error', function () {
    it('It should call next with the error.', function testNonHTTPErrorCallsNextOnly(done) {
      const error = new Error('A non HTTP error.');
      errorHandler(error, null, null, testUtils.assertCalledOnce((err) => {
        err.should.eql(error);
        done();
      }));
    });
  });

  errorModules.forEach((errorModule) => {
    describe(`If the error handler is called with a HTTP ${errorModule.name} error`, function () {
      it(`it should respond with an HTTP ${errorModule.status} and the specified response body.`, function testHandle404() {
        const responseBody = { error: errorModule.status };
        const error = errorModule.module.createError('An error', {}, responseBody);
        const res = testUtils.createMockResponse();

        errorHandler(error, null, res, null);

        res.parameters.should.eql({
          status: errorModule.status,
          json: responseBody,
        });
      });
    });
  });
});