1 files changed, 48 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/WeakMap/iterable-with-symbol-keys.js b/js/src/tests/test262/built-ins/WeakMap/iterable-with-symbol-keys.js
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+++ b/js/src/tests/test262/built-ins/WeakMap/iterable-with-symbol-keys.js
@@ -0,0 +1,48 @@
+// |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-iterable
+description: >
+  Returns the new WeakMap adding entries from the iterable parameter, with
+  Symbol keys.
+info: |
+  WeakMap ( [ _iterable_ ] )
+  5. Let _adder_ be ? Get(_map_, *"set"*).
+  6. Return ? AddEntriesFromIterable(_map_, _iterable_, _adder_).
+
+  AddEntriesFromIterable:
+  3. Repeat,
+    i. Let _status_ be Completion(Call(_adder_, _target_, « _k_, _v_ »)).
+
+  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 sym = Symbol('a description');
+var results = [];
+var set = WeakMap.prototype.set;
+WeakMap.prototype.set = function(key, value) {
+  results.push({
+    _this: this,
+    key: key,
+    value: value
+  });
+  return set.call(this, key, value);
+};
+var map = new WeakMap([
+  [sym, 42],
+  [Symbol.hasInstance, 43],
+]);
+
+assert.sameValue(results.length, 2, 'Called set() for each entry');
+assert.sameValue(results[0].key, sym, 'Adds object in order - first key, regular symbol');
+assert.sameValue(results[0].value, 42, 'Adds object in order - first value');
+assert.sameValue(results[0]._this, map, 'Adds object in order - this');
+assert.sameValue(results[1].key, Symbol.hasInstance, 'Adds object in order - second key, well-known symbol');
+assert.sameValue(results[1].value, 43, 'Adds object in order - second value');
+assert.sameValue(results[1]._this, map, 'Adds object in order - this');
+
+reportCompare(0, 0);