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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/test262/built-ins/Object/defineProperty/15.2.3.6-4-9.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-upstream.tar.xz firefox-esr-upstream.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-9.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-9.js | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-9.js b/js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-9.js new file mode 100644 index 0000000000..82bc4ff57c --- /dev/null +++ b/js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-9.js @@ -0,0 +1,43 @@ +// Copyright (c) 2012 Ecma International. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +info: | + Step 4 of defineProperty calls the [[DefineOwnProperty]] internal method + of O to define the property. Step 7b of [[DefineOwnProperty]] rejects if + current.[[Enumerable]] and desc.[[Enumerable]] are the boolean negations + of each other. +es5id: 15.2.3.6-4-9 +description: > + Object.defineProperty throws TypeError when changing + [[Enumerable]] from true to false on non-configurable data + properties +---*/ + +var o = {}; + +// create a data valued property with [[Enumerable]] explicitly set to true; +// all other attributes default to false. +var d1 = { + value: 101, + enumerable: true, + configurable: false +}; +Object.defineProperty(o, "foo", d1); + +// now, setting enumerable to false should fail, since [[Configurable]] +// on the original property will be false. +var desc = { + value: 101, + enumerable: false +}; +assert.throws(TypeError, function() { + Object.defineProperty(o, "foo", desc); +}); +// the property should remain unchanged. +var d2 = Object.getOwnPropertyDescriptor(o, "foo"); +assert.sameValue(d2.value, 101, 'd2.value'); +assert.sameValue(d2.enumerable, true, 'd2.enumerable'); +assert.sameValue(d2.configurable, false, 'd2.configurable'); + +reportCompare(0, 0); |