708 lines
22 KiB
JavaScript
708 lines
22 KiB
JavaScript
// Copyright IBM Corp. 2016. All Rights Reserved.
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// Node module: strong-error-handler
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// This file is licensed under the MIT License.
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// License text available at https://opensource.org/licenses/MIT
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'use strict';
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var cloneAllProperties = require('../lib/clone.js');
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var debug = require('debug')('test');
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var expect = require('chai').expect;
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var express = require('express');
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var strongErrorHandler = require('..');
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var supertest = require('supertest');
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var util = require('util');
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describe('strong-error-handler', function() {
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before(setupHttpServerAndClient);
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beforeEach(resetRequestHandler);
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it('sets nosniff header', function(done) {
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givenErrorHandlerForError();
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request.get('/')
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.expect('X-Content-Type-Options', 'nosniff')
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.expect(500, done);
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});
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it('handles response headers already sent', function(done) {
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givenErrorHandlerForError();
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var handler = _requestHandler;
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_requestHandler = function(req, res, next) {
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res.end('empty');
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process.nextTick(function() {
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handler(req, res, next);
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});
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};
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request.get('/').expect(200, 'empty', done);
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});
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context('status code', function() {
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it('converts non-error "err.status" to 500', function(done) {
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givenErrorHandlerForError(new ErrorWithProps({status: 200}));
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request.get('/').expect(500, done);
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});
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it('converts non-error "err.statusCode" to 500', function(done) {
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givenErrorHandlerForError(new ErrorWithProps({statusCode: 200}));
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request.get('/').expect(500, done);
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});
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it('uses the value from "err.status"', function(done) {
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givenErrorHandlerForError(new ErrorWithProps({status: 404}));
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request.get('/').expect(404, done);
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});
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it('uses the value from "err.statusCode"', function(done) {
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givenErrorHandlerForError(new ErrorWithProps({statusCode: 404}));
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request.get('/').expect(404, done);
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});
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it('prefers "err.statusCode" over "err.status"', function(done) {
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givenErrorHandlerForError(new ErrorWithProps({
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statusCode: 400,
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status: 404,
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}));
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request.get('/').expect(400, done);
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});
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it('handles error from `res.statusCode`', function(done) {
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givenErrorHandlerForError();
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var handler = _requestHandler;
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_requestHandler = function(req, res, next) {
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res.statusCode = 507;
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handler(req, res, next);
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};
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request.get('/').expect(
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507,
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{error: {statusCode: 507, message: 'Insufficient Storage'}},
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done);
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});
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});
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context('logging', function() {
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var logs;
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beforeEach(redirectConsoleError);
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afterEach(restoreConsoleError);
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it('logs by default', function(done) {
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givenErrorHandlerForError(new Error(), {
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// explicitly set to undefined to prevent givenErrorHandlerForError
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// from disabling this option
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log: undefined,
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});
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request.get('/').end(function(err) {
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if (err) return done(err);
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expect(logs).to.have.length(1);
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done();
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});
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});
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it('honours options.log=false', function(done) {
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givenErrorHandlerForError(new Error(), {log: false});
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request.get('/api').end(function(err) {
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if (err) return done(err);
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expect(logs).to.have.length(0);
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done();
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});
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});
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it('honours options.log=true', function(done) {
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givenErrorHandlerForError(new Error(), {log: true});
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request.get('/api').end(function(err) {
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if (err) return done(err);
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expect(logs).to.have.length(1);
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done();
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});
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});
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it('includes relevant information in the log message', function(done) {
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givenErrorHandlerForError(new TypeError('ERROR-NAME'), {log: true});
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request.get('/api').end(function(err) {
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if (err) return done(err);
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var msg = logs[0];
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// the request method
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expect(msg).to.contain('GET');
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// the request path
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expect(msg).to.contain('/api');
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// the error name & message
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expect(msg).to.contain('TypeError: ERROR-NAME');
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// the stack
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expect(msg).to.contain(__filename);
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done();
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});
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});
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it('handles array argument', function(done) {
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givenErrorHandlerForError(
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[new TypeError('ERR1'), new Error('ERR2')],
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{log: true});
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request.get('/api').end(function(err) {
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if (err) return done(err);
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var msg = logs[0];
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// the request method
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expect(msg).to.contain('GET');
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// the request path
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expect(msg).to.contain('/api');
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// the error name & message for all errors
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expect(msg).to.contain('TypeError: ERR1');
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expect(msg).to.contain('Error: ERR2');
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// verify that stacks are included too
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expect(msg).to.contain(__filename);
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done();
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});
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});
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it('handles non-Error argument', function(done) {
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givenErrorHandlerForError('STRING ERROR', {log: true});
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request.get('/').end(function(err) {
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if (err) return done(err);
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var msg = logs[0];
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expect(msg).to.contain('STRING ERROR');
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done();
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});
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});
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var _consoleError = console.error;
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function redirectConsoleError() {
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logs = [];
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console.error = function() {
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var msg = util.format.apply(util, arguments);
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logs.push(msg);
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};
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}
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function restoreConsoleError() {
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console.error = _consoleError;
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logs = [];
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}
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});
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context('JSON response', function() {
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it('contains all error properties when debug=true', function(done) {
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var error = new ErrorWithProps({
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message: 'a test error message',
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details: 'some details',
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extra: 'sensitive data',
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});
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givenErrorHandlerForError(error, {debug: true});
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requestJson().end(function(err, res) {
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if (err) return done(err);
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var expectedData = {
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statusCode: 500,
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message: 'a test error message',
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name: 'ErrorWithProps',
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details: 'some details',
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extra: 'sensitive data',
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stack: error.stack,
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};
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expect(res.body).to.have.property('error');
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expect(res.body.error).to.eql(expectedData);
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done();
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});
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});
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it('contains non-enumerable Error properties when debug=true',
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function(done) {
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var error = new Error('a test error message');
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givenErrorHandlerForError(error, {debug: true});
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requestJson().end(function(err, res) {
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if (err) return done(err);
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expect(res.body).to.have.property('error');
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var resError = res.body.error;
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expect(resError).to.have.property('name', 'Error');
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expect(resError).to.have.property('message',
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'a test error message');
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expect(resError).to.have.property('stack', error.stack);
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done();
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});
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});
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it('should allow setting safe fields when status=5xx', function(done) {
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var error = new ErrorWithProps({
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name: 'Error',
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safeField: 'SAFE',
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unsafeField: 'UNSAFE',
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});
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givenErrorHandlerForError(error, {
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safeFields: ['safeField'],
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});
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requestJson().end(function(err, res) {
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if (err) return done(err);
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expect(res.body).to.have.property('error');
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expect(res.body.error).to.have.property('safeField', 'SAFE');
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expect(res.body.error).not.to.have.property('unsafeField');
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done();
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});
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});
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it('should allow setting safe fields when status=4xx', function(done) {
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var error = new ErrorWithProps({
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name: 'Error',
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statusCode: 422,
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safeField: 'SAFE',
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unsafeField: 'UNSAFE',
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});
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givenErrorHandlerForError(error, {
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safeFields: ['safeField'],
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});
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requestJson().end(function(err, res) {
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if (err) return done(err);
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expect(res.body).to.have.property('error');
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expect(res.body.error).to.have.property('safeField', 'SAFE');
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expect(res.body.error).not.to.have.property('unsafeField');
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done();
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});
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});
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it('contains subset of properties when status=4xx', function(done) {
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var error = new ErrorWithProps({
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name: 'ValidationError',
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message: 'The model instance is not valid.',
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statusCode: 422,
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details: 'some details',
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extra: 'sensitive data',
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});
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givenErrorHandlerForError(error);
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requestJson().end(function(err, res) {
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if (err) return done(err);
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expect(res.body).to.have.property('error');
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expect(res.body.error).to.eql({
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name: 'ValidationError',
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message: 'The model instance is not valid.',
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statusCode: 422,
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details: 'some details',
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// notice the property "extra" is not included
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});
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done();
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});
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});
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it('contains only safe info when status=5xx', function(done) {
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// Mock an error reported by fs.readFile
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var error = new ErrorWithProps({
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name: 'Error',
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message: 'ENOENT: no such file or directory, open "/etc/passwd"',
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errno: -2,
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code: 'ENOENT',
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syscall: 'open',
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path: '/etc/password',
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});
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givenErrorHandlerForError(error);
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requestJson().end(function(err, res) {
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if (err) return done(err);
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expect(res.body).to.have.property('error');
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expect(res.body.error).to.eql({
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statusCode: 500,
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message: 'Internal Server Error',
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});
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done();
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});
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});
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it('handles array argument as 500 when debug=false', function(done) {
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var errors = [new Error('ERR1'), new Error('ERR2'), 'ERR STRING'];
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givenErrorHandlerForError(errors);
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requestJson().expect(500).end(function(err, res) {
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if (err) return done(err);
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expect(res.body).to.eql({
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error: {
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statusCode: 500,
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message: 'Internal Server Error',
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},
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});
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done();
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});
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});
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it('returns all array items when debug=true', function(done) {
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var testError = new ErrorWithProps({
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message: 'expected test error',
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statusCode: 400,
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});
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var anotherError = new ErrorWithProps({
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message: 'another expected error',
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statusCode: 500,
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});
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var errors = [testError, anotherError, 'ERR STRING'];
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givenErrorHandlerForError(errors, {debug: true});
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requestJson().expect(500).end(function(err, res) {
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if (err) return done(err);
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var data = res.body.error;
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expect(data).to.have.property('message').that.match(/multiple errors/);
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var expectTestError = getExpectedErrorData(testError);
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delete expectTestError.statusCode;
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var expectAnotherError = getExpectedErrorData(anotherError);
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delete expectAnotherError.statusCode;
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var expectedDetails = [
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expectTestError,
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expectAnotherError,
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'ERR STRING',
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];
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expect(data).to.have.property('details').to.eql(expectedDetails);
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done();
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});
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});
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it('handles non-Error argument as 500 when debug=false', function(done) {
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givenErrorHandlerForError('Error Message', {debug: false});
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requestJson().expect(500).end(function(err, res) {
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if (err) return done(err);
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expect(res.body.error).to.eql({
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statusCode: 500,
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message: 'Internal Server Error',
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});
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done();
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});
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});
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it('returns non-Error argument in message when debug=true', function(done) {
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givenErrorHandlerForError('Error Message', {debug: true});
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requestJson().expect(500).end(function(err, res) {
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if (err) return done(err);
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expect(res.body.error).to.eql({
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statusCode: 500,
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message: 'Error Message',
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});
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done();
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});
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});
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function requestJson(url) {
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return request.get(url || '/')
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.set('Accept', 'text/plain')
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.expect('Content-Type', /^application\/json/);
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}
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});
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context('HTML response', function() {
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it('contains all error properties when debug=true', function(done) {
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var error = new ErrorWithProps({
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message: 'a test error message',
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details: 'some details',
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extra: 'sensitive data',
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});
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error.statusCode = 500;
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givenErrorHandlerForError(error, {debug: true});
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requestHTML()
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.expect(500)
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.expect(/<title>ErrorWithProps<\/title>/)
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.expect(/500(.*?)a test error message/)
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.expect(/extra(.*?)sensitive data/)
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.expect(/details(.*?)some details/)
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.expect(/id="stacktrace"(.*?)ErrorWithProps: a test error message/,
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done);
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});
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it('contains subset of properties when status=4xx', function(done) {
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var error = new ErrorWithProps({
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name: 'ValidationError',
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message: 'The model instance is not valid.',
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statusCode: 422,
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details: 'some details',
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extra: 'sensitive data',
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});
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givenErrorHandlerForError(error, {debug: false});
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requestHTML()
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.end(function(err, res) {
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expect(res.statusCode).to.eql(422);
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var body = res.error.text;
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expect(body).to.match(/some details/);
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expect(body).to.not.match(/sensitive data/);
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expect(body).to.match(/<title>ValidationError<\/title>/);
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expect(body).to.match(/422(.*?)The model instance is not valid./);
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done();
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});
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});
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it('contains only safe info when status=5xx', function(done) {
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// Mock an error reported by fs.readFile
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var error = new ErrorWithProps({
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name: 'Error',
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message: 'ENOENT: no such file or directory, open "/etc/passwd"',
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errno: -2,
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code: 'ENOENT',
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syscall: 'open',
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path: '/etc/password',
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});
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givenErrorHandlerForError(error);
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requestHTML()
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.end(function(err, res) {
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expect(res.statusCode).to.eql(500);
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var body = res.error.text;
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expect(body).to.not.match(/\/etc\/password/);
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expect(body).to.not.match(/-2/);
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expect(body).to.not.match(/ENOENT/);
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// only have the following
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expect(body).to.match(/<title>Internal Server Error<\/title>/);
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expect(body).to.match(/500(.*?)Internal Server Error/);
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done();
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});
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});
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function requestHTML(url) {
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return request.get(url || '/')
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.set('Accept', 'text/html')
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.expect('Content-Type', /^text\/html/);
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}
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});
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context('XML response', function() {
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it('contains all error properties when debug=true', function(done) {
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var error = new ErrorWithProps({
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message: 'a test error message',
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details: 'some details',
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extra: 'sensitive data',
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});
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error.statusCode = 500;
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givenErrorHandlerForError(error, {debug: true});
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requestXML()
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.expect(500)
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.expect(/<statusCode>500<\/statusCode>/)
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.expect(/<name>ErrorWithProps<\/name>/)
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.expect(/<message>a test error message<\/message>/)
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.expect(/<details>some details<\/details>/)
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.expect(/<extra>sensitive data<\/extra>/)
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.expect(/<stack>ErrorWithProps: a test error message(.*?)/, done);
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});
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it('contains subset of properties when status=4xx', function(done) {
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var error = new ErrorWithProps({
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name: 'ValidationError',
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message: 'The model instance is not valid.',
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statusCode: 422,
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details: 'some details',
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extra: 'sensitive data',
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});
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givenErrorHandlerForError(error, {debug: false});
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requestXML()
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.end(function(err, res) {
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expect(res.statusCode).to.eql(422);
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var body = res.error.text;
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expect(body).to.match(/<details>some details<\/details>/);
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expect(body).to.not.match(/<extra>sensitive data<\/extra>/);
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expect(body).to.match(/<name>ValidationError<\/name>/);
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expect(body).to.match(
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/<message>The model instance is not valid.<\/message>/
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);
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done();
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});
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});
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it('contains only safe info when status=5xx', function(done) {
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// Mock an error reported by fs.readFile
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var error = new ErrorWithProps({
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name: 'Error',
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message: 'ENOENT: no such file or directory, open "/etc/passwd"',
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errno: -2,
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code: 'ENOENT',
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syscall: 'open',
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path: '/etc/password',
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});
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givenErrorHandlerForError(error);
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requestXML()
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.end(function(err, res) {
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expect(res.statusCode).to.eql(500);
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var body = res.error.text;
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expect(body).to.not.match(/\/etc\/password/);
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expect(body).to.not.match(/-2/);
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expect(body).to.not.match(/ENOENT/);
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// only have the following
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expect(body).to.match(/<statusCode>500<\/statusCode>/);
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expect(body).to.match(/<message>Internal Server Error<\/message>/);
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done();
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});
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});
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function requestXML(url) {
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return request.get(url || '/')
|
|
.set('Accept', 'text/xml')
|
|
.expect('Content-Type', /^text\/xml/);
|
|
}
|
|
});
|
|
|
|
context('Content Negotiation', function() {
|
|
it('defaults to json without options', function(done) {
|
|
givenErrorHandlerForError(new Error('Some error'), {});
|
|
request.get('/')
|
|
.set('Accept', '*/*')
|
|
.expect('Content-Type', /^application\/json/, done);
|
|
});
|
|
|
|
it('honors accepted content-type', function(done) {
|
|
givenErrorHandlerForError(new Error('Some error'), {
|
|
defaultType: 'application/json',
|
|
});
|
|
request.get('/')
|
|
.set('Accept', 'text/html')
|
|
.expect('Content-Type', /^text\/html/, done);
|
|
});
|
|
|
|
it('honors order of accepted content-type', function(done) {
|
|
givenErrorHandlerForError(new Error('Some error'), {
|
|
defaultType: 'text/html',
|
|
});
|
|
request.get('/')
|
|
// `application/json` will be used because its provided first
|
|
.set('Accept', 'application/json, text/html')
|
|
.expect('Content-Type', /^application\/json/, done);
|
|
});
|
|
|
|
it('honors order of accepted content-types of text/html', function(done) {
|
|
givenErrorHandlerForError(new Error('Some error'), {
|
|
defaultType: 'application/json',
|
|
});
|
|
request.get('/')
|
|
// text/html will be used because its provided first
|
|
.set('Accept', 'text/html, application/json')
|
|
.expect('Content-Type', /^text\/html/, done);
|
|
});
|
|
|
|
it('picks first supported type upon multiple accepted', function(done) {
|
|
givenErrorHandlerForError(new Error('Some error'), {
|
|
defaultType: 'application/json',
|
|
});
|
|
request.get('/')
|
|
.set('Accept', '*/*, not-supported, text/html, application/json')
|
|
.expect('Content-Type', /^text\/html/, done);
|
|
});
|
|
|
|
it('falls back for unsupported option.defaultType', function(done) {
|
|
givenErrorHandlerForError(new Error('Some error'), {
|
|
defaultType: 'unsupported',
|
|
});
|
|
request.get('/')
|
|
.set('Accept', '*/*')
|
|
.expect('Content-Type', /^application\/json/, done);
|
|
});
|
|
|
|
it('returns defaultType for unsupported type', function(done) {
|
|
givenErrorHandlerForError(new Error('Some error'), {
|
|
defaultType: 'text/html',
|
|
});
|
|
request.get('/')
|
|
.set('Accept', 'unsupported/type')
|
|
.expect('Content-Type', /^text\/html/, done);
|
|
});
|
|
|
|
it('supports query _format', function(done) {
|
|
givenErrorHandlerForError(new Error('Some error'), {
|
|
defaultType: 'text/html',
|
|
});
|
|
request.get('/?_format=html')
|
|
.set('Accept', 'application/json')
|
|
.expect('Content-Type', /^text\/html/, done);
|
|
});
|
|
});
|
|
});
|
|
|
|
var app, _requestHandler, request;
|
|
function resetRequestHandler() {
|
|
_requestHandler = null;
|
|
}
|
|
|
|
function givenErrorHandlerForError(error, options) {
|
|
if (!error) error = new Error('an error');
|
|
|
|
if (!options) options = {};
|
|
if (!('log' in options)) {
|
|
// Disable logging to console by default, so that we don't spam
|
|
// console output. One can use "DEBUG=strong-error-handler" when
|
|
// troubleshooting.
|
|
options.log = false;
|
|
}
|
|
|
|
var handler = strongErrorHandler(options);
|
|
_requestHandler = function(req, res, next) {
|
|
debug('Invoking strong-error-handler');
|
|
handler(error, req, res, next);
|
|
};
|
|
}
|
|
|
|
function setupHttpServerAndClient(done) {
|
|
app = express();
|
|
app.use(function(req, res, next) {
|
|
if (!_requestHandler) {
|
|
var msg = 'Error handler middleware was not setup in this test';
|
|
console.error(msg);
|
|
res.statusCode = 500;
|
|
res.setHeader('Content-Type', 'text/plain; charset=utf-8');
|
|
res.end(msg);
|
|
return;
|
|
}
|
|
_requestHandler(req, res, warnUnhandledError);
|
|
});
|
|
|
|
app.listen(0, function() {
|
|
var url = 'http://127.0.0.1:' + this.address().port;
|
|
debug('Test server listening on %s', url);
|
|
request = supertest(app);
|
|
done();
|
|
})
|
|
.once('error', function(err) {
|
|
debug('Cannot setup HTTP server: %s', err.stack);
|
|
done(err);
|
|
});
|
|
}
|
|
|
|
function warnUnhandledError(err) {
|
|
console.log('unexpected: strong-error-handler called next with '
|
|
(err && (err.stack || err)) || 'no error');
|
|
res.statusCode = 500;
|
|
res.setHeader('Content-Type', 'text/plain; charset=utf-8');
|
|
res.end(err ?
|
|
'Unhandled strong-error-handler error:\n' + (err.stack || err) :
|
|
'The error was silently discared by strong-error-handler');
|
|
}
|
|
|
|
function ErrorWithProps(props) {
|
|
this.name = props.name || 'ErrorWithProps';
|
|
for (var p in props) {
|
|
this[p] = props[p];
|
|
}
|
|
|
|
if (Error.captureStackTrace) {
|
|
// V8 (Chrome, Opera, Node)
|
|
Error.captureStackTrace(this, this.constructor);
|
|
}
|
|
}
|
|
util.inherits(ErrorWithProps, Error);
|
|
|
|
function getExpectedErrorData(err) {
|
|
var data = {};
|
|
cloneAllProperties(data, err);
|
|
return data;
|
|
}
|