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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /js/src/tests/non262/ArrayBuffer/slice-species.js | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/tests/non262/ArrayBuffer/slice-species.js')
-rw-r--r-- | js/src/tests/non262/ArrayBuffer/slice-species.js | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/js/src/tests/non262/ArrayBuffer/slice-species.js b/js/src/tests/non262/ArrayBuffer/slice-species.js new file mode 100644 index 0000000000..6f025d162c --- /dev/null +++ b/js/src/tests/non262/ArrayBuffer/slice-species.js @@ -0,0 +1,180 @@ +const tests = [ + [Int8Array, [9, 10, 11, 12, 13, 14, 15, 16]], + [Uint8Array, [9, 10, 11, 12, 13, 14, 15, 16]], + [Uint8ClampedArray, [9, 10, 11, 12, 13, 14, 15, 16]], + [Int16Array, [5, 6, 7, 8]], + [Uint16Array, [5, 6, 7, 8]], + [Int32Array, [3, 4]], + [Uint32Array, [3, 4]], + [Float32Array, [3, 4]], + [Float64Array, [2]], +]; + +let logs = []; +for (let [ctor, answer] of tests) { + let arr = new ctor([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]); + + let proxyProto = new Proxy({}, { + get(that, name) { + throw new Error("unexpected prop access"); + } + }); + + class MyArrayBuffer extends ArrayBuffer {} + + arr.buffer.constructor = new Proxy({}, { + get(that, name) { + if (name == Symbol.species) { + logs.push("get @@species"); + let C = new Proxy(function(...args) { + logs.push("call ctor"); + return new MyArrayBuffer(...args); + }, { + get(that, name) { + logs.push("get ctor." + String(name)); + if (name == "prototype") { + return proxyProto; + } + throw new Error("unexpected prop access"); + } + }); + return C; + } + throw new Error("unexpected prop access"); + } + }); + + logs.length = 0; + let buf = arr.buffer.slice(8, 16); + assertEq(buf.constructor, MyArrayBuffer); + assertDeepEq(logs, ["get @@species", "get ctor.prototype", "call ctor"]); + assertDeepEq([...new ctor(buf)], answer); + + + // modified @@species + let a = arr.buffer; + a.constructor = { + [Symbol.species]: MyArrayBuffer + }; + let b = a.slice(8, 16); + assertEq(b.constructor, MyArrayBuffer); + assertDeepEq([...new ctor(b)], answer); + + class MyArrayBufferWithSpecies extends ArrayBuffer { + get [Symbol.species]() { + return MyArrayBufferWithSpecies; + } + } + a = arr.buffer; + a.constructor = MyArrayBufferWithSpecies; + b = a.slice(8, 16); + assertEq(b.constructor, MyArrayBufferWithSpecies); + assertDeepEq([...new ctor(b)], answer); + + // no @@species + a = arr.buffer; + a.constructor = { + [Symbol.species]: undefined + }; + b = a.slice(8, 16); + assertEq(b.constructor, ArrayBuffer); + assertDeepEq([...new ctor(b)], answer); + + a = arr.buffer; + a.constructor = { + [Symbol.species]: null + }; + b = a.slice(8, 16); + assertEq(b.constructor, ArrayBuffer); + assertDeepEq([...new ctor(b)], answer); + + // invalid @@species + for (let species of [0, 1.1, true, false, "a", /a/, Symbol.iterator, [], {}]) { + a = arr.buffer; + a.constructor = { + [Symbol.species]: species + }; + assertThrowsInstanceOf(() => a.slice(8, 16), TypeError); + } + + // undefined constructor + a = arr.buffer; + a.constructor = undefined; + b = a.slice(8, 16); + assertEq(b.constructor, ArrayBuffer); + assertDeepEq([...new ctor(b)], answer); + + // invalid constructor + for (let ctor of [null, 0, 1.1, true, false, "a", Symbol.iterator]) { + a = arr.buffer; + a.constructor = ctor; + assertThrowsInstanceOf(() => a.slice(8, 16), TypeError); + } + + // @@species from different global + let g = newGlobal(); + g.eval("var MyArrayBuffer = class MyArrayBuffer extends ArrayBuffer {};"); + a = arr.buffer; + a.constructor = { + [Symbol.species]: g.MyArrayBuffer + }; + b = a.slice(8, 16); + assertEq(b.constructor, g.MyArrayBuffer); + assertDeepEq([...new ctor(b)], answer); + + a = arr.buffer; + a.constructor = { + [Symbol.species]: g.ArrayBuffer + }; + b = a.slice(8, 16); + assertEq(b.constructor, g.ArrayBuffer); + assertDeepEq([...new ctor(b)], answer); + + // constructor from different global + g.eval(` +var MyArrayBufferWithSpecies = class MyArrayBufferWithSpecies extends ArrayBuffer { + get [Symbol.species]() { + return MyArrayBufferWithSpecies; + } +}; +`); + a = arr.buffer; + a.constructor = g.MyArrayBufferWithSpecies; + b = a.slice(8, 16); + assertEq(b.constructor, g.MyArrayBufferWithSpecies); + assertDeepEq([...new ctor(b)], answer); + + g.eval(` +var arr = new ${ctor.name}([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]); +var a = arr.buffer; +`); + b = ArrayBuffer.prototype.slice.call(g.a, 8, 16); + assertEq(b.constructor, g.ArrayBuffer); + assertDeepEq([...new ctor(b)], answer); + + // running in different global + b = g.a.slice(8, 16); + assertEq(b.constructor, g.ArrayBuffer); + assertDeepEq([...new ctor(b)], answer); + + // subclasses + // not-modified @@species + a = new MyArrayBuffer(16); + b = a.slice(8, 16); + assertEq(b.constructor, MyArrayBuffer); + + // modified @@species + class MyArrayBuffer2 extends ArrayBuffer { + } + class MyArrayBuffer3 extends ArrayBuffer { + static get [Symbol.species]() { + return MyArrayBuffer2; + } + } + a = new MyArrayBuffer3(16); + b = a.slice(8, 16); + assertEq(b.constructor, MyArrayBuffer2); +} + +if (typeof reportCompare === 'function') + reportCompare(0,0,"OK"); |