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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /js/src/tests/non262/class/classPrototype.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | js/src/tests/non262/class/classPrototype.js | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/js/src/tests/non262/class/classPrototype.js b/js/src/tests/non262/class/classPrototype.js new file mode 100644 index 0000000000..0d2296037c --- /dev/null +++ b/js/src/tests/non262/class/classPrototype.js @@ -0,0 +1,65 @@ +// The prototype of a class is a non-writable, non-configurable, non-enumerable data property. +class a { constructor() { } } +let b = class { constructor() { } }; +for (let test of [a,b]) { + var protoDesc = Object.getOwnPropertyDescriptor(test, "prototype"); + assertEq(protoDesc.writable, false); + assertEq(protoDesc.configurable, false); + assertEq(protoDesc.enumerable, false); + + var prototype = protoDesc.value; + assertEq(typeof prototype, "object"); + assertEq(Object.getPrototypeOf(prototype), Object.prototype); + assertEq(Object.isExtensible(prototype), true); + + var desiredPrototype = {}; + Object.defineProperty(desiredPrototype, "constructor", { writable: true, + configurable: true, + enumerable: false, + value: test }); + assertDeepEq(prototype, desiredPrototype); +} + +// As such, it should by a TypeError to try and overwrite "prototype" with a +// static member. The only way to try is with a computed property name; the rest +// are early errors. +assertThrowsInstanceOf(() => eval(` + class a { + constructor() { }; + static ["prototype"]() { } + } + `), TypeError); +assertThrowsInstanceOf(() => eval(` + class a { + constructor() { }; + static get ["prototype"]() { } + } + `), TypeError); +assertThrowsInstanceOf(() => eval(` + class a { + constructor() { }; + static set ["prototype"](x) { } + } + `), TypeError); + +assertThrowsInstanceOf(() => eval(`( + class a { + constructor() { }; + static ["prototype"]() { } + } + )`), TypeError); +assertThrowsInstanceOf(() => eval(`( + class a { + constructor() { }; + static get ["prototype"]() { } + } + )`), TypeError); +assertThrowsInstanceOf(() => eval(`( + class a { + constructor() { }; + static set ["prototype"](x) { } + } + )`), TypeError); + +if (typeof reportCompare === "function") + reportCompare(0, 0, "OK"); |