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65 lines
3.1 KiB
65 lines
3.1 KiB
'use strict';
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const assert = require('assert');
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const CachePolicy = require('..');
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const simpleRequest = {method:'GET',headers:{host:'www.w3c.org'},url:'/Protocols/rfc2616/rfc2616-sec14.html'};
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const simpleRequestBut = overrides=>Object.assign({},simpleRequest,overrides);
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const cacheableResponse = {headers:{'cache-control':'max-age=111'}};
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const etaggedResponse = {headers:Object.assign({'etag':'"123456789"'},cacheableResponse.headers)};
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const lastModifiedResponse = {headers:Object.assign({'last-modified':'Tue, 15 Nov 1994 12:45:26 GMT'},cacheableResponse.headers)};
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const multiValidatorResponse = {headers:Object.assign({},etaggedResponse.headers,lastModifiedResponse.headers)};
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const alwaysVariableResponse = {headers:Object.assign({'vary':'*'},cacheableResponse.headers)};
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describe('Can be revalidated?', function() {
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it('ok if method changes to HEAD',function(){
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const cache = new CachePolicy(simpleRequest,etaggedResponse);
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assert(cache.validationRequest(simpleRequestBut({method:'HEAD'})));
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});
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it('not if method mismatch (other than HEAD)',function(){
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const cache = new CachePolicy(simpleRequest,etaggedResponse);
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assert(!cache.validationRequest(simpleRequestBut({method:'POST'})));
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});
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it('not if url mismatch',function(){
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const cache = new CachePolicy(simpleRequest,etaggedResponse);
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assert(!cache.validationRequest(simpleRequestBut({url:'/yomomma'})));
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});
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it('not if host mismatch',function(){
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const cache = new CachePolicy(simpleRequest,etaggedResponse);
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assert(!cache.validationRequest(simpleRequestBut({headers:{host:'www.w4c.org'}})))
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});
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it('not if vary fields prevent',function(){
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const cache = new CachePolicy(simpleRequest,alwaysVariableResponse);
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assert(!cache.validationRequest(simpleRequest));
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});
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it('when entity tag validator is present', function() {
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const cache = new CachePolicy(simpleRequest, etaggedResponse);
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assert(cache.validationRequest(simpleRequest));
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});
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it('when last-modified validator is present', function() {
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const cache = new CachePolicy(simpleRequest, lastModifiedResponse);
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assert(cache.validationRequest(simpleRequest));
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});
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it('not without validators', function() {
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const cache = new CachePolicy(simpleRequest, cacheableResponse);
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assert(!cache.validationRequest(simpleRequest));
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})
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});
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describe('Validation request', function(){
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it('must contain any etag',function(){
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const cache = new CachePolicy(simpleRequest,multiValidatorResponse);
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const expected = multiValidatorResponse.headers.etag;
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const actual = cache.validationRequest(simpleRequest).headers['if-none-match'];
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assert.equal(actual,expected);
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});
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it('should send the Last-Modified value',function(){
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const cache = new CachePolicy(simpleRequest,multiValidatorResponse);
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const expected = multiValidatorResponse.headers['last-modified'];
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const actual = cache.validationRequest(simpleRequest).headers['if-modified-since'];
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assert.equal(actual,expected);
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});
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});
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