1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/ShadowRealm/length.js b/js/src/tests/test262/built-ins/ShadowRealm/length.js
new file mode 100644
index 0000000000..20d4573d48
--- /dev/null
+++ b/js/src/tests/test262/built-ins/ShadowRealm/length.js
@@ -0,0 +1,31 @@
+// |reftest| shell-option(--enable-shadow-realms) skip-if(!xulRuntime.shell) -- requires shell-options
+// Copyright (C) 2021 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-shadowrealm-constructor
+description: >
+  The value of ShadowRealm.length is 0
+info: |
+  ShadowRealm ( )
+
+  Every built-in function object, including constructors, has a "length" property
+  whose value is a non-negative integral Number. Unless otherwise specified, this value
+  is equal to the number of required parameters shown in the subclause heading for the
+  function description. Optional parameters and rest parameters are not included in
+  the parameter count.
+
+  Unless otherwise specified, the "length" property of a built-in function object has
+  the attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: true }.
+
+includes: [propertyHelper.js]
+features: [ShadowRealm]
+---*/
+
+verifyProperty(ShadowRealm, "length", {
+  value: 0,
+  enumerable: false,
+  writable: false,
+  configurable: true,
+});
+
+reportCompare(0, 0);