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| 1 'use strict'; | |
| 2 | |
| 3 if (self.importScripts) { | |
| 4 self.importScripts('/resources/testharness.js'); | |
| 5 } | |
| 6 | |
| 7 test(() => { | |
| 8 | |
| 9 new CountQueuingStrategy({ highWaterMark: 4 }); | |
| 10 | |
| 11 }, 'Can construct a CountQueuingStrategy with a valid high water mark'); | |
| 12 | |
| 13 test(() => { | |
| 14 | |
| 15 for (const highWaterMark of [-Infinity, NaN, 'foo', {}, () => {}]) { | |
| 16 const strategy = new CountQueuingStrategy({ highWaterMark }); | |
| 17 assert_equals(strategy.highWaterMark, highWaterMark, `${highWaterMark} gets
set correctly`); | |
| 18 } | |
| 19 | |
| 20 }, 'Can construct a CountQueuingStrategy with any value as its high water mark')
; | |
| 21 | |
| 22 test(() => { | |
| 23 | |
| 24 const highWaterMark = 1; | |
| 25 const highWaterMarkObjectGetter = { | |
| 26 get highWaterMark() { return highWaterMark; } | |
| 27 }; | |
| 28 const error = new Error('wow!'); | |
| 29 const highWaterMarkObjectGetterThrowing = { | |
| 30 get highWaterMark() { throw error; } | |
| 31 }; | |
| 32 | |
| 33 assert_throws({ name: 'TypeError' }, () => new CountQueuingStrategy(), 'constr
uction fails with undefined'); | |
| 34 assert_throws({ name: 'TypeError' }, () => new CountQueuingStrategy(null), 'co
nstruction fails with null'); | |
| 35 assert_throws({ name: 'Error' }, () => new CountQueuingStrategy(highWaterMarkO
bjectGetterThrowing), | |
| 36 'construction fails with an object with a throwing highWaterMark getter'); | |
| 37 | |
| 38 // Should not fail: | |
| 39 new CountQueuingStrategy('potato'); | |
| 40 new CountQueuingStrategy({}); | |
| 41 new CountQueuingStrategy(highWaterMarkObjectGetter); | |
| 42 | |
| 43 }, 'CountQueuingStrategy constructor behaves as expected with strange arguments'
); | |
| 44 | |
| 45 | |
| 46 test(() => { | |
| 47 | |
| 48 const thisValue = null; | |
| 49 const chunk = { | |
| 50 get byteLength() { | |
| 51 throw new TypeError('shouldn\'t be called'); | |
| 52 } | |
| 53 }; | |
| 54 | |
| 55 assert_equals(CountQueuingStrategy.prototype.size.call(thisValue, chunk), 1); | |
| 56 | |
| 57 }, 'CountQueuingStrategy.prototype.size should work generically on its this and
its arguments'); | |
| 58 | |
| 59 test(() => { | |
| 60 | |
| 61 const size = 1024; | |
| 62 const chunk = { byteLength: size }; | |
| 63 const chunkGetter = { | |
| 64 get byteLength() { return size; } | |
| 65 }; | |
| 66 const error = new Error('wow!'); | |
| 67 const chunkGetterThrowing = { | |
| 68 get byteLength() { throw error; } | |
| 69 }; | |
| 70 | |
| 71 assert_equals(CountQueuingStrategy.prototype.size(), 1, 'size returns 1 with u
ndefined'); | |
| 72 assert_equals(CountQueuingStrategy.prototype.size(null), 1, 'size returns 1 wi
th null'); | |
| 73 assert_equals(CountQueuingStrategy.prototype.size('potato'), 1, 'size returns
1 with non-object type'); | |
| 74 assert_equals(CountQueuingStrategy.prototype.size({}), 1, 'size returns 1 with
empty object'); | |
| 75 assert_equals(CountQueuingStrategy.prototype.size(chunk), 1, 'size returns 1 w
ith a chunk'); | |
| 76 assert_equals(CountQueuingStrategy.prototype.size(chunkGetter), 1, 'size retur
ns 1 with chunk getter'); | |
| 77 assert_equals(CountQueuingStrategy.prototype.size(chunkGetterThrowing), 1, | |
| 78 'size returns 1 with chunk getter that throws'); | |
| 79 | |
| 80 }, 'CountQueuingStrategy size behaves as expected with strange arguments'); | |
| 81 | |
| 82 test(() => { | |
| 83 | |
| 84 const strategy = new CountQueuingStrategy({ highWaterMark: 4 }); | |
| 85 | |
| 86 assert_object_equals(Object.getOwnPropertyDescriptor(strategy, 'highWaterMark'
), | |
| 87 { value: 4, writable: true, enumerable: true, configurable: true }, | |
| 88 'highWaterMark property should be a data property with the value passed the
constructor'); | |
| 89 assert_equals(typeof strategy.size, 'function'); | |
| 90 | |
| 91 }, 'CountQueuingStrategy instances have the correct properties'); | |
| 92 | |
| 93 test(() => { | |
| 94 | |
| 95 const strategy = new CountQueuingStrategy({ highWaterMark: 4 }); | |
| 96 assert_equals(strategy.highWaterMark, 4); | |
| 97 | |
| 98 strategy.highWaterMark = 10; | |
| 99 assert_equals(strategy.highWaterMark, 10); | |
| 100 | |
| 101 strategy.highWaterMark = 'banana'; | |
| 102 assert_equals(strategy.highWaterMark, 'banana'); | |
| 103 | |
| 104 }, 'CountQueuingStrategy\'s highWaterMark property can be set to anything'); | |
| 105 | |
| 106 done(); | |
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