1 files changed, 55 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/class/elements/private-setter-brand-check-super-class.js b/js/src/tests/test262/language/statements/class/elements/private-setter-brand-check-super-class.js
new file mode 100644
index 0000000000..87963f8f92
--- /dev/null
+++ b/js/src/tests/test262/language/statements/class/elements/private-setter-brand-check-super-class.js
@@ -0,0 +1,55 @@
+// Copyright (C) 2019 Caio Lima (Igalia SL). All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Subclass can access private methods of a superclass (private setter)
+esid: sec-privatefieldget
+info: |
+  SuperCall : super Arguments
+    ...
+    10. Perform ? InitializeInstanceElements(result, F).
+    ...
+
+  InitializeInstanceFieldsElements ( O, constructor )
+    1. Assert: Type ( O ) is Object.
+    2. Assert: Assert constructor is an ECMAScript function object.
+    3. If constructor.[[PrivateBrand]] is not undefined,
+      a. Perform ? PrivateBrandAdd(O, constructor.[[PrivateBrand]]).
+    4. Let fieldRecords be the value of constructor's [[Fields]] internal slot.
+    5. For each item fieldRecord in order from fieldRecords,
+      a. Perform ? DefineField(O, fieldRecord).
+    6. Return.
+features: [class, class-methods-private]
+---*/
+
+class S {
+  set #m(v) { this._v = v }
+  
+  superAccess(v) { this.#m = v; }
+}
+
+class C extends S {
+  set #m(v) { this._u = v; }
+  
+  access(v) {
+    return this.#m = v;
+  }
+}
+  
+let c = new C();
+
+c.access('test262');
+assert.sameValue(c._u, 'test262');
+
+c.superAccess('super class');
+assert.sameValue(c._v, 'super class');
+
+let s = new S();
+s.superAccess('super class')
+assert.sameValue(s._v, 'super class');
+
+assert.throws(TypeError, function() {
+  c.access.call(s, 'foo');
+}, 'invalid access of C private method');
+
+reportCompare(0, 0);