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streams-queuing.js
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streams-queuing.js
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import { test, testThrows, summary } from './helpers.js';
console.log('CountQueuingStrategy / ByteLengthQueuingStrategy Tests\n');
const cqs = new CountQueuingStrategy({ highWaterMark: 5 });
test('CQS highWaterMark', cqs.highWaterMark, 5);
test('CQS size returns function', typeof cqs.size, 'function');
test('CQS size() returns 1', cqs.size(), 1);
test('CQS size(anything) returns 1', cqs.size({ byteLength: 1024 }), 1);
const cqs0 = new CountQueuingStrategy({ highWaterMark: 0 });
test('CQS highWaterMark 0', cqs0.highWaterMark, 0);
const cqs_large = new CountQueuingStrategy({ highWaterMark: 1024 });
test('CQS highWaterMark 1024', cqs_large.highWaterMark, 1024);
test('CQS size is same function each access', cqs.size === cqs.size, true);
test('CQS size is same across instances', cqs.size === cqs_large.size, true);
test('CQS size.name', cqs.size.name, 'size');
test('CQS size.length', cqs.size.length, 0);
testThrows('CQS requires new', () => CountQueuingStrategy({ highWaterMark: 1 }));
testThrows('CQS requires options', () => new CountQueuingStrategy());
testThrows('CQS requires highWaterMark', () => new CountQueuingStrategy({}));
testThrows('CQS rejects null', () => new CountQueuingStrategy(null));
testThrows('CQS rejects non-object', () => new CountQueuingStrategy(5));
test('CQS typeof', typeof CountQueuingStrategy, 'function');
const blqs = new ByteLengthQueuingStrategy({ highWaterMark: 1024 });
test('BLQS highWaterMark', blqs.highWaterMark, 1024);
test('BLQS size returns function', typeof blqs.size, 'function');
test('BLQS size with byteLength', blqs.size({ byteLength: 256 }), 256);
test('BLQS size with byteLength 0', blqs.size({ byteLength: 0 }), 0);
test('BLQS size with no byteLength', blqs.size({}), undefined);
test('BLQS size.name', blqs.size.name, 'size');
test('BLQS size.length', blqs.size.length, 1);
testThrows('BLQS size with undefined', () => blqs.size());
testThrows('BLQS size with null', () => blqs.size(null));
const blqs0 = new ByteLengthQueuingStrategy({ highWaterMark: 0 });
test('BLQS highWaterMark 0', blqs0.highWaterMark, 0);
test('BLQS size is same function each access', blqs.size === blqs.size, true);
test('BLQS size is same across instances', blqs.size === blqs0.size, true);
testThrows('BLQS requires new', () => ByteLengthQueuingStrategy({ highWaterMark: 1 }));
testThrows('BLQS requires options', () => new ByteLengthQueuingStrategy());
testThrows('BLQS requires highWaterMark', () => new ByteLengthQueuingStrategy({}));
test('BLQS typeof', typeof ByteLengthQueuingStrategy, 'function');
test('CQS size !== BLQS size', cqs.size !== blqs.size, true);
test('CQS toStringTag', Object.prototype.toString.call(cqs), '[object CountQueuingStrategy]');
test('BLQS toStringTag', Object.prototype.toString.call(blqs), '[object ByteLengthQueuingStrategy]');
const cqs_str = new CountQueuingStrategy({ highWaterMark: '10' });
test('CQS highWaterMark string coercion', cqs_str.highWaterMark, 10);
const blqs_str = new ByteLengthQueuingStrategy({ highWaterMark: '256' });
test('BLQS highWaterMark string coercion', blqs_str.highWaterMark, 256);
test('CQS highWaterMark false coercion', new CountQueuingStrategy({ highWaterMark: false }).highWaterMark, 0);
test('CQS highWaterMark true coercion', new CountQueuingStrategy({ highWaterMark: true }).highWaterMark, 1);
const cqs_frac = new CountQueuingStrategy({ highWaterMark: 2.5 });
test('CQS fractional highWaterMark', cqs_frac.highWaterMark, 2.5);
const buf = new Uint8Array([1, 2, 3, 4]);
test('BLQS size with Uint8Array', blqs.size(buf), 4);
testThrows('BLQS size propagates getter throw', () => {
blqs.size({
get byteLength() {
throw new Error('boom');
}
});
});
summary();

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Storage Handle
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streams-queuing.js (3 KB)

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