| 1 | 'use strict';
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| 2 |
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| 3 | const assert = require('assert');
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| 4 | const CachePolicy = require('..');
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| 5 |
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| 6 | describe('Vary', function() {
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| 7 | it('Basic', function() {
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| 8 | const policy = new CachePolicy({headers:{'weather': 'nice'}}, {headers:{'cache-control':'max-age=5','vary':'weather'}});
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| 9 |
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| 10 | assert(policy.satisfiesWithoutRevalidation({headers:{'weather': 'nice'}}));
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| 11 | assert(!policy.satisfiesWithoutRevalidation({headers:{'weather': 'bad'}}));
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| 12 | });
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| 13 |
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| 14 | it("* doesn't match", function() {
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| 15 | const policy = new CachePolicy({headers:{'weather': 'ok'}}, {headers:{'cache-control':'max-age=5','vary':'*'}});
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| 16 |
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| 17 | assert(!policy.satisfiesWithoutRevalidation({headers:{'weather': 'ok'}}));
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| 18 | });
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| 19 |
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| 20 | it("* is stale", function() {
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| 21 | const policy1 = new CachePolicy({headers:{'weather': 'ok'}}, {headers:{'cache-control':'public,max-age=99', 'vary':'*'}});
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| 22 | const policy2 = new CachePolicy({headers:{'weather': 'ok'}}, {headers:{'cache-control':'public,max-age=99', 'vary':'weather'}});
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| 23 |
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| 24 | assert(policy1.stale());
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| 25 | assert(!policy2.stale());
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| 26 | });
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| 27 |
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| 28 | it('Values are case-sensitive', function() {
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| 29 | const policy = new CachePolicy({headers:{'weather': 'BAD'}}, {headers:{'cache-control':'max-age=5','vary':'Weather'}});
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| 30 |
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| 31 | assert(policy.satisfiesWithoutRevalidation({headers:{'weather': 'BAD'}}));
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| 32 | assert(!policy.satisfiesWithoutRevalidation({headers:{'weather': 'bad'}}));
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| 33 | });
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| 34 |
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| 35 | it('Irrelevant headers ignored', function() {
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| 36 | const policy = new CachePolicy({headers:{'weather': 'nice'}}, {headers:{'cache-control':'max-age=5','vary':'moon-phase'}});
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| 37 |
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| 38 | assert(policy.satisfiesWithoutRevalidation({headers:{'weather': 'bad'}}));
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| 39 | assert(policy.satisfiesWithoutRevalidation({headers:{'sun': 'shining'}}));
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| 40 | assert(!policy.satisfiesWithoutRevalidation({headers:{'moon-phase': 'full'}}));
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| 41 | });
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| 42 |
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| 43 | it('Absence is meaningful', function() {
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| 44 | const policy = new CachePolicy({headers:{'weather': 'nice'}}, {headers:{'cache-control':'max-age=5','vary':'moon-phase, weather'}});
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| 45 |
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| 46 | assert(policy.satisfiesWithoutRevalidation({headers:{'weather': 'nice'}}));
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| 47 | assert(!policy.satisfiesWithoutRevalidation({headers:{'weather': 'nice', 'moon-phase': ''}}));
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| 48 | assert(!policy.satisfiesWithoutRevalidation({headers:{}}));
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| 49 | });
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| 50 |
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| 51 | it('All values must match', function() {
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| 52 | const policy = new CachePolicy({headers:{'sun': 'shining', 'weather': 'nice'}}, {headers:{'cache-control':'max-age=5','vary':'weather, sun'}});
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| 53 |
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| 54 | assert(policy.satisfiesWithoutRevalidation({headers:{'sun': 'shining', 'weather': 'nice'}}));
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| 55 | assert(!policy.satisfiesWithoutRevalidation({headers:{'sun': 'shining', 'weather': 'bad'}}));
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| 56 | });
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| 57 |
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| 58 | it('Whitespace is OK', function() {
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| 59 | const policy = new CachePolicy({headers:{'sun': 'shining', 'weather': 'nice'}}, {headers:{'cache-control':'max-age=5','vary':' weather , sun '}});
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| 60 |
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| 61 | assert(policy.satisfiesWithoutRevalidation({headers:{'sun': 'shining', 'weather': 'nice'}}));
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| 62 | assert(!policy.satisfiesWithoutRevalidation({headers:{'weather': 'nice'}}));
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| 63 | assert(!policy.satisfiesWithoutRevalidation({headers:{'sun': 'shining'}}));
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| 64 | });
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| 65 |
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| 66 | it('Order is irrelevant', function() {
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| 67 | const policy1 = new CachePolicy({headers:{'sun': 'shining', 'weather': 'nice'}}, {headers:{'cache-control':'max-age=5','vary':'weather, sun'}});
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| 68 | const policy2 = new CachePolicy({headers:{'sun': 'shining', 'weather': 'nice'}}, {headers:{'cache-control':'max-age=5','vary':'sun, weather'}});
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| 69 |
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| 70 | assert(policy1.satisfiesWithoutRevalidation({headers:{'weather': 'nice', 'sun': 'shining'}}));
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| 71 | assert(policy1.satisfiesWithoutRevalidation({headers:{'sun': 'shining', 'weather': 'nice'}}));
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| 72 | assert(policy2.satisfiesWithoutRevalidation({headers:{'weather': 'nice', 'sun': 'shining'}}));
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| 73 | assert(policy2.satisfiesWithoutRevalidation({headers:{'sun': 'shining', 'weather': 'nice'}}));
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| 74 | });
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| 75 | });
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