1 files changed, 66 insertions, 0 deletions
diff --git a/js/src/tests/non262/PrivateName/proxy-ccw.js b/js/src/tests/non262/PrivateName/proxy-ccw.js
new file mode 100644
index 0000000000..e68426b93d
--- /dev/null
+++ b/js/src/tests/non262/PrivateName/proxy-ccw.js
@@ -0,0 +1,66 @@
+// |reftest| shell-option(--enable-private-fields) skip-if(!xulRuntime.shell) -- requires shell-options
+
+// Validate CCWs and proxies
+class Base {
+  constructor(o) {
+    return o;
+  }
+}
+
+class A extends Base {
+  x1 = 12;
+  #x = 10;
+  static gx(o) {
+    return o.#x;
+  }
+  static sx(o, x) {
+    o.#x = x;
+  }
+  static hasx(o) {
+    try {
+      o.#x;
+      return true;
+    } catch {
+      return false;
+    }
+  }
+}
+
+
+var g = newGlobal({newCompartment: true});
+g.A = A;
+
+// cross_compartment_target is a cross compartment wrapper to an empty object.
+var cross_compartment_target = g.eval('this.x = {}; this.x');
+
+// #x gets stamped into the target of the CCW.
+new A(cross_compartment_target);
+assertEq(A.hasx(cross_compartment_target), true);
+
+// Can we update and read from this compartment?
+assertEq(A.gx(cross_compartment_target), 10);
+var o = {test: 12};
+A.sx(cross_compartment_target, o);
+assertEq(A.gx(cross_compartment_target), o);
+
+// Can we read and update from the other compartment?
+assertEq(g.eval('this.A.gx(this.x)'), o);
+var y = g.eval('this.y = {test: 13}; this.A.sx(this.x, this.y); this.y');
+assertEq(g.eval('this.A.gx(this.x)'), y);
+assertEq(A.gx(cross_compartment_target), y);
+
+
+if (typeof nukeCCW === 'function') {
+  // Nuke the CCW. Now things should throw.
+  nukeCCW(cross_compartment_target);
+  var threw = true;
+  try {
+    A.gx(cross_compartment_target);
+    threw = false;
+  } catch (e) {
+  }
+  assertEq(threw, true);
+}
+
+
+if (typeof reportCompare === 'function') reportCompare(0, 0);
+\ No newline at end of file