1 files changed, 32 insertions, 0 deletions
diff --git a/js/src/tests/non262/PrivateName/prototype-proxy.js b/js/src/tests/non262/PrivateName/prototype-proxy.js
new file mode 100644
index 0000000000..55c8abab13
--- /dev/null
+++ b/js/src/tests/non262/PrivateName/prototype-proxy.js
@@ -0,0 +1,32 @@
+// |reftest| skip-if(!this.hasOwnProperty("wrapWithProto"))
+
+const o0 = {};
+const v2 = new Proxy(o0, o0);
+
+// v8 is a forwarding proxy with "prototype" behaviour;
+// see the comment for mHasPrototype on BaseProxyHandler
+// in Proxy.h.
+//
+// Private Fields don't interact with the hasPrototype
+// behaviour (to minimize the overhead, and since private
+// fields are always own properties).
+const v8 = this.wrapWithProto(v2, {});
+function f9(a10) {
+    return v8;
+}
+class C11 extends f9 {
+    #b = 12;
+    static {
+        const v13 = new this();
+
+        const val = v8.#b; // Get
+        assertEq(val, 12);
+
+        v8.#b = 0; // Set
+        assertEq(v8.#b, 0);
+
+        assertEq(#b in v8, true); // HasOwn.
+    }
+}
+
+if (typeof reportCompare === 'function') reportCompare(0, 0);