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res.vary.js
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res.vary.js
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var express = require('../')
, should = require('should');
function response() {
var res = Object.create(express.response);
res._headers = {};
return res;
}
describe('res.vary()', function(){
describe('with no arguments', function(){
it('should not set Vary', function(){
var res = response();
res.vary();
should.not.exist(res.get('Vary'));
})
})
describe('with an empty array', function(){
it('should not set Vary', function(){
var res = response();
res.vary([]);
should.not.exist(res.get('Vary'));
})
})
describe('with an array', function(){
it('should set the values', function(){
var res = response();
res.vary(['Accept', 'Accept-Language', 'Accept-Encoding']);
res.get('Vary').should.equal('Accept, Accept-Language, Accept-Encoding');
})
})
describe('with a string', function(){
it('should set the value', function(){
var res = response();
res.vary('Accept');
res.get('Vary').should.equal('Accept');
})
})
describe('when the value is present', function(){
it('should not add it again', function(){
var res = response();
res.vary('Accept');
res.vary('Accept-Encoding');
res.vary('Accept-Encoding');
res.vary('Accept-Encoding');
res.vary('Accept');
res.get('Vary').should.equal('Accept, Accept-Encoding');
})
})
})