test/res.vary.js

   1 'use strict'
   2
   3 var express = require('..');
   4 var request = require('supertest');
   5 var utils = require('./support/utils');
   6
   7 describe('res.vary()', function(){
   8   describe('with no arguments', function(){
   9     it('should throw error', function (done) {
  10       var app = express();
  11
  12       app.use(function (req, res) {
  13         res.vary();
  14         res.end();
  15       });
  16
  17       request(app)
  18       .get('/')
  19       .expect(500, /field.*required/, done)
  20     })
  21   })
  22
  23   describe('with an empty array', function(){
  24     it('should not set Vary', function (done) {
  25       var app = express();
  26
  27       app.use(function (req, res) {
  28         res.vary([]);
  29         res.end();
  30       });
  31
  32       request(app)
  33       .get('/')
  34       .expect(utils.shouldNotHaveHeader('Vary'))
  35       .expect(200, done);
  36     })
  37   })
  38
  39   describe('with an array', function(){
  40     it('should set the values', function (done) {
  41       var app = express();
  42
  43       app.use(function (req, res) {
  44         res.vary(['Accept', 'Accept-Language', 'Accept-Encoding']);
  45         res.end();
  46       });
  47
  48       request(app)
  49       .get('/')
  50       .expect('Vary', 'Accept, Accept-Language, Accept-Encoding')
  51       .expect(200, done);
  52     })
  53   })
  54
  55   describe('with a string', function(){
  56     it('should set the value', function (done) {
  57       var app = express();
  58
  59       app.use(function (req, res) {
  60         res.vary('Accept');
  61         res.end();
  62       });
  63
  64       request(app)
  65       .get('/')
  66       .expect('Vary', 'Accept')
  67       .expect(200, done);
  68     })
  69   })
  70
  71   describe('when the value is present', function(){
  72     it('should not add it again', function (done) {
  73       var app = express();
  74
  75       app.use(function (req, res) {
  76         res.vary('Accept');
  77         res.vary('Accept-Encoding');
  78         res.vary('Accept-Encoding');
  79         res.vary('Accept-Encoding');
  80         res.vary('Accept');
  81         res.end();
  82       });
  83
  84       request(app)
  85       .get('/')
  86       .expect('Vary', 'Accept, Accept-Encoding')
  87       .expect(200, done);
  88     })
  89   })
  90 })