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-rw-r--r--js/src/tests/test262/built-ins/ShadowRealm/extensibility.js18
1 files changed, 18 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/ShadowRealm/extensibility.js b/js/src/tests/test262/built-ins/ShadowRealm/extensibility.js
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index 0000000000..b5114a4d62
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+++ b/js/src/tests/test262/built-ins/ShadowRealm/extensibility.js
@@ -0,0 +1,18 @@
+// |reftest| shell-option(--enable-shadow-realms) skip-if(!xulRuntime.shell) -- requires shell-options
+// Copyright (C) 2021 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-shadowrealm-constructor
+description: >
+ The ShadowRealm constructor is extensible
+info: |
+ 17 ECMAScript Standard Built-in Objects
+
+ Unless specified otherwise, the [[Extensible]] internal slot of a built-in
+ object initially has the value true.
+features: [ShadowRealm]
+---*/
+
+assert.sameValue(Object.isExtensible(ShadowRealm), true);
+
+reportCompare(0, 0);