1 files changed, 26 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/WeakMap/prototype/set/adds-symbol-element.js b/js/src/tests/test262/built-ins/WeakMap/prototype/set/adds-symbol-element.js
new file mode 100644
index 0000000000..f23ea6b54f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/WeakMap/prototype/set/adds-symbol-element.js
@@ -0,0 +1,26 @@
+// |reftest| shell-option(--enable-symbols-as-weakmap-keys) skip-if(release_or_beta||!xulRuntime.shell) -- symbols-as-weakmap-keys is not released yet, requires shell-options
+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-weakmap.prototype.set
+description: Adds a value with a Symbol key.
+info: |
+  WeakMap.prototype.set ( _key_, _value_ )
+  6. Let _p_ be the Record {[[Key]]: _key_, [[Value]]: _value_}.
+  7. Append _p_ as the last element of _entries_.
+features: [Symbol, WeakMap, symbols-as-weakmap-keys]
+---*/
+
+var map = new WeakMap();
+var foo = Symbol('a description');
+var bar = Symbol('a description');
+
+map.set(foo, 1);
+map.set(bar, 2);
+map.set(Symbol.hasInstance, 3);
+
+assert(map.has(bar), 'Regular symbol as key');
+assert.sameValue(map.get(foo), 1, "Symbols with the same description don't overwrite each other");
+assert(map.has(Symbol.hasInstance), 'Well-known symbol as key');
+
+reportCompare(0, 0);