diff options
Diffstat (limited to 'js/src/jit-test/tests/arrays/sort-getter-only.js')
-rw-r--r-- | js/src/jit-test/tests/arrays/sort-getter-only.js | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/arrays/sort-getter-only.js b/js/src/jit-test/tests/arrays/sort-getter-only.js new file mode 100644 index 000000000..d17e8556d --- /dev/null +++ b/js/src/jit-test/tests/arrays/sort-getter-only.js @@ -0,0 +1,29 @@ +// The property assignments in Array.prototype.sort are strict assignments. + +load(libdir + "asserts.js"); + +var a = ["A", , "B", "C", "D"]; +var normalArrayElementDesc = Object.getOwnPropertyDescriptor(a, 0); +var getterDesc = { + get: function () { return "F"; }, + set: undefined, + enumerable: true, + configurable: false +}; +Object.defineProperty(a, 1, getterDesc); + +// a.sort is permitted to try to delete a[1] or to try to assign a[1], but it +// must try one or the other. Either one will fail, throwing a TypeError. +assertThrowsInstanceOf(() => a.sort(), TypeError); + +// a.sort() is not permitted to delete the nonconfigurable property. +assertDeepEq(Object.getOwnPropertyDescriptor(a, 1), getterDesc); + +// The values left in the other elements of a are unspecified; some or all may +// have been deleted. +for (var i = 0; i < a.length; i++) { + if (i !== 1 && a.hasOwnProperty(i)) { + normalArrayElementDesc.value = a[i]; + assertDeepEq(Object.getOwnPropertyDescriptor(a, i), normalArrayElementDesc); + } +} |