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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-17.js | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-17.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-17.js | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-17.js b/js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-17.js new file mode 100644 index 0000000000..28ba9fae71 --- /dev/null +++ b/js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-17.js @@ -0,0 +1,39 @@ +// 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. For non-configurable properties, step 10.a.ii.1 + of [[DefineOwnProperty]] rejects changing the value of non-writable properties. +es5id: 15.2.3.6-4-17 +description: > + Object.defineProperty throws TypeError when changing value of + non-writable non-configurable data properties +---*/ + +var o = {}; + +// create a data valued property; all other attributes default to false. +var d1 = { + value: 101 +}; +Object.defineProperty(o, "foo", d1); + +// now, trying to change the value of "foo" should fail, since both +// [[Configurable]] and [[Writable]] on the original property will be false. +var desc = { + value: 102 +}; +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.writable, false, 'd2.writable'); +assert.sameValue(d2.enumerable, false, 'd2.enumerable'); +assert.sameValue(d2.configurable, false, 'd2.configurable'); + +reportCompare(0, 0); |