Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 38 insertions, 0 deletions

diff --git a/js/src/tests/test262/built-ins/Array/prototype/push/set-length-zero-array-length-is-non-writable.js b/js/src/tests/test262/built-ins/Array/prototype/push/set-length-zero-array-length-is-non-writable.js
new file mode 100644
index 0000000000..43527e8569
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/push/set-length-zero-array-length-is-non-writable.js
@@ -0,0 +1,38 @@
+// Copyright (C) 2022 Apple Inc. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype.push
+description: >
+  A TypeError is thrown when "length" is [[Set]] on an empty array with non-writable "length".
+info: |
+  Array.prototype.push ( ...items )
+
+  [...]
+  2. Let len be ? LengthOfArrayLike(O).
+  [...]
+  6. Perform ? Set(O, "length", 𝔽(len), true).
+
+  OrdinarySetWithOwnDescriptor ( O, P, V, Receiver, ownDesc )
+
+  [...]
+  2. If IsDataDescriptor(ownDesc) is true, then
+    a. If ownDesc.[[Writable]] is false, return false.
+
+  Set ( O, P, V, Throw )
+
+  [...]
+  1. Let success be ? O.[[Set]](P, V, O).
+  2. If success is false and Throw is true, throw a TypeError exception.
+---*/
+
+var array = [];
+Object.defineProperty(array, "length", { writable: false });
+
+assert.throws(TypeError, function() {
+  array.push();
+});
+
+assert(!array.hasOwnProperty(0));
+assert.sameValue(array.length, 0);
+
+reportCompare(0, 0);