1 files changed, 37 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/WeakSet/iterable-with-symbol-values.js b/js/src/tests/test262/built-ins/WeakSet/iterable-with-symbol-values.js
new file mode 100644
index 0000000000..a3e1263b6f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/WeakSet/iterable-with-symbol-values.js
@@ -0,0 +1,37 @@
+// |reftest| skip -- symbols-as-weakmap-keys is not supported
+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-weakset-iterable
+description: >
+  Returns the new WeakSet adding Symbol values from the iterable parameter.
+info: |
+  WeakSet ( [ _iterable_ ] )
+  8. Repeat,
+    d. Let _status_ be Completion(Call(_adder_, _set_, « _nextValue_ »)).
+
+  WeakSet.prototype.add ( _value_ ):
+  6. Append _value_ as the last element of _entries_.
+features: [Symbol, WeakSet, symbols-as-weakmap-keys]
+includes: [compareArray.js]
+---*/
+
+var first = Symbol('a description');
+var second = Symbol('a description');
+var added = [];
+var realAdd = WeakSet.prototype.add;
+WeakSet.prototype.add = function(value) {
+  added.push(value);
+  return realAdd.call(this, value);
+};
+var s = new WeakSet([first, second, Symbol.hasInstance]);
+
+assert.compareArray(
+  added,
+  [first, second, Symbol.hasInstance],
+  "add() was called 3 times, on the two unregistered and one well-known symbols in order"
+);
+
+WeakSet.prototype.add = realAdd;
+
+reportCompare(0, 0);