1 files changed, 63 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/expressions/class/private-static-setter-multiple-evaluations-of-class-realm.js b/js/src/tests/test262/language/expressions/class/private-static-setter-multiple-evaluations-of-class-realm.js
new file mode 100644
index 0000000000..42f18f6718
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/class/private-static-setter-multiple-evaluations-of-class-realm.js
@@ -0,0 +1,63 @@
+// Copyright (C) 2019 Caio Lima (Igalia SL). All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Every new evaluation of a class creates a different Private Name (private static setter)
+esid: sec-runtime-semantics-evaluate-name
+info: |
+  ClassTail : ClassHeritage { ClassBody }
+    ...
+    19. Let F be constructorInfo.[[Closure]].
+    20. If ClassHeritage_opt is present and protoParent is not null, then set F.[[ConstructorKind]] to "derived".
+    21. Perform MakeConstructor(F, false, proto).
+    22. Perform MakeClassConstructor(F).
+    ...
+    33. If PrivateBoundIdentifiers of ClassBody contains a Private Name P such that P's [[Kind]] field is either "method" or "accessor" and P's [[Brand]] is F,
+      a. PrivateBrandAdd(F, F).
+    ...
+
+  PrivateBrandCheck(O, P)
+    1. If O.[[PrivateBrands]] does not contain an entry e such that SameValue(e, P.[[Brand]]) is true,
+      a. Throw a TypeError exception.
+features: [class, class-static-methods-private, cross-realm]
+flags: [noStrict]
+---*/
+
+let global1 = $262.createRealm().global;
+let global2 = $262.createRealm().global;
+let eval1 = global1.eval;
+let eval2 = global2.eval;
+
+let classStringExpression = `(
+class {
+  static set #m(v) {
+    this._v = v;
+  }
+
+  static access() {
+    this.#m = 'test262';
+  }
+}
+)`;
+
+let evalClass = function (_eval) {
+  return _eval(classStringExpression);
+};
+
+let C1 = evalClass(eval1);
+let C2 = evalClass(eval2);
+
+C1.access();
+assert.sameValue(C1._v, 'test262');
+C2.access();
+assert.sameValue(C2._v, 'test262');
+
+assert.throws(global1.TypeError, function() {
+  C1.access.call(C2);
+}, 'invalid access of C1 private static setter');
+
+assert.throws(global2.TypeError, function() {
+  C2.access.call(C1);
+}, 'invalid access of C2 private static setter');
+
+reportCompare(0, 0);