1 files changed, 51 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/class/elements/private-setter-brand-check-multiple-evaluations-of-class.js b/js/src/tests/test262/language/statements/class/elements/private-setter-brand-check-multiple-evaluations-of-class.js
new file mode 100644
index 0000000000..d4c179fb0e
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+++ b/js/src/tests/test262/language/statements/class/elements/private-setter-brand-check-multiple-evaluations-of-class.js
@@ -0,0 +1,51 @@
+// 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 brand (private setter)
+esid: sec-privatefieldget
+info: |
+  ClassTail : ClassHeritage { ClassBody }
+    ...
+    11. Let proto be ObjectCreate(protoParent).
+    ...
+    31. If PrivateBoundIdentifiers of ClassBody contains a Private Name P such that the P's [[Kind]] field is either "method" or "accessor",
+      a. Set F.[[PrivateBrand]] to proto.
+    ...
+
+  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-methods-private]
+---*/
+
+let createAndInstantiateClass = function () {
+  class C {
+    set #m(v) { this._v = v; }
+    
+    access(o, v) {
+      o.#m = v;
+    }
+  }
+  
+  let c = new C();
+  return c;
+};
+
+let c1 = createAndInstantiateClass();
+let c2 = createAndInstantiateClass();
+
+c1.access(c1, 'test262');
+assert.sameValue(c1._v, 'test262');
+c2.access(c2, 'test262');
+assert.sameValue(c2._v, 'test262');
+
+assert.throws(TypeError, function() {
+  c1.access(c2, 'foo');
+}, 'invalid access of c1 private method');
+
+assert.throws(TypeError, function() {
+  c2.access(c1, 'foo');
+}, 'invalid access of c2 private method');
+
+reportCompare(0, 0);