1 files changed, 15 insertions, 0 deletions
diff --git a/js/src/tests/non262/Array/group-propertkey-is-length.js b/js/src/tests/non262/Array/group-propertkey-is-length.js
new file mode 100644
index 0000000000..49eb512ec6
--- /dev/null
+++ b/js/src/tests/non262/Array/group-propertkey-is-length.js
@@ -0,0 +1,15 @@
+var array = [0];
+
+var grouped = Object.groupBy(array, () => "length");
+
+assertDeepEq(grouped, Object.create(null, {
+  length: {
+    value: [0],
+    writable: true,
+    enumerable: true,
+    configurable: true,
+  },
+}));
+
+if (typeof reportCompare === "function")
+  reportCompare(0, 0);