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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/Reflect/isExtensible.js | |
parent | Initial commit. (diff) | |
download | thunderbird-upstream.tar.xz thunderbird-upstream.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/Reflect/isExtensible.js')
-rw-r--r-- | js/src/tests/non262/Reflect/isExtensible.js | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/js/src/tests/non262/Reflect/isExtensible.js b/js/src/tests/non262/Reflect/isExtensible.js new file mode 100644 index 0000000000..f38724875d --- /dev/null +++ b/js/src/tests/non262/Reflect/isExtensible.js @@ -0,0 +1,57 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/licenses/publicdomain/ */ + +// Reflect.isExtensible behaves just like Object.extensible except when the +// target argument is missing or is not an object (and that behavior is tested +// in target.js). + +// Test basic functionality. +var someObjects = [ + {}, + {a: "a"}, + [0, 1], + new Uint8Array(64), + Object(Symbol("table")), + new Proxy({}, {}) +]; +if (typeof SharedArrayBuffer != "undefined") + someObjects.push(new Uint8Array(new SharedArrayBuffer(64))); + +for (var obj of someObjects) { + assertEq(Reflect.isExtensible(obj), true); + assertEq(Reflect.preventExtensions(obj), true); + assertEq(Reflect.isExtensible(obj), false); +} + +// Array with nonwritable length. +var arr = [0, 1, 2, 3]; +Object.defineProperty(arr, "length", {writable: false}); +assertEq(Reflect.isExtensible(arr), true); + +// Proxy case. +for (var ext of [true, false]) { + var obj = {}; + if (!ext) + Object.preventExtensions(obj); + var proxy = new Proxy(obj, { + isExtensible() { return ext; } + }); + assertEq(Reflect.isExtensible(proxy), ext); +} + +// If a Proxy's isExtensible method throws, the exception is propagated. +proxy = new Proxy({}, { + isExtensible() { throw "oops"; } +}); +assertThrowsValue(() => Reflect.isExtensible(proxy), "oops"); + +// If an invariant is broken, [[IsExtensible]] does not return false. It throws +// a TypeError. +proxy = new Proxy({}, { + isExtensible() { return false; } +}); +assertThrowsInstanceOf(() => Reflect.isExtensible(proxy), TypeError); + +// For more Reflect.isExtensible tests, see target.js. + +reportCompare(0, 0); |