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e98ff6c984
Add tests to ensure that:
1. First `byteLength` isn't larger than `maxByteLength`.
2. Then `OrdinaryCreateFromConstructor` is called.
3. And finally `Create{Shared}ByteDataBlock` is called.
39 lines
1.3 KiB
JavaScript
39 lines
1.3 KiB
JavaScript
// Copyright (C) 2024 André Bargull. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-sharedarraybuffer-length
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description: >
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Throws a RangeError if the requested Data Block is too large.
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info: |
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SharedArrayBuffer ( length [ , options ] )
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...
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4. Return ? AllocateSharedArrayBuffer(NewTarget, byteLength, requestedMaxByteLength).
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AllocateSharedArrayBuffer ( constructor, byteLength [ , maxByteLength ] )
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...
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7. Let block be ? CreateSharedByteDataBlock(allocLength).
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...
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CreateSharedByteDataBlock ( size )
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1. Let db be a new Shared Data Block value consisting of size bytes. If it is
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impossible to create such a Shared Data Block, throw a RangeError exception.
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features: [SharedArrayBuffer, resizable-arraybuffer]
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---*/
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assert.throws(RangeError, function() {
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// Allocating 7 PiB should fail with a RangeError.
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// Math.pow(1024, 5) = 1125899906842624
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new SharedArrayBuffer(0, {maxByteLength: 7 * 1125899906842624});
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}, "`maxByteLength` option is 7 PiB");
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assert.throws(RangeError, function() {
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// Allocating almost 8 PiB should fail with a RangeError.
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// Math.pow(2, 53) = 9007199254740992
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new SharedArrayBuffer(0, {maxByteLength: 9007199254740992 - 1});
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}, "`maxByteLength` option is Math.pow(2, 53) - 1");
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