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Diffstat (limited to 'js/src/tests/test262/language/statements/class/subclass/builtin-objects/WeakSet/regular-subclassing.js')
-rw-r--r-- | js/src/tests/test262/language/statements/class/subclass/builtin-objects/WeakSet/regular-subclassing.js | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/class/subclass/builtin-objects/WeakSet/regular-subclassing.js b/js/src/tests/test262/language/statements/class/subclass/builtin-objects/WeakSet/regular-subclassing.js new file mode 100644 index 0000000000..9f8aa73318 --- /dev/null +++ b/js/src/tests/test262/language/statements/class/subclass/builtin-objects/WeakSet/regular-subclassing.js @@ -0,0 +1,30 @@ +// Copyright (C) 2016 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +es6id: 23.4.1 +description: Subclassing the WeakSet object +info: | + 23.4.1 The WeakSet Constructor + + ... + + The WeakSet constructor is designed to be subclassable. It may be used as the + value in an extends clause of a class definition. Subclass constructors that + intend to inherit the specified WeakSet behaviour must include a super call to + the WeakSet constructor to create and initialize the subclass instance with + the internal state necessary to support the WeakSet.prototype built-in + methods. +features: [WeakSet] +---*/ + +class WS extends WeakSet {} + +var set = new WS(); +var obj = {}; + +assert.sameValue(set.has(obj), false); + +set.add(obj); +assert.sameValue(set.has(obj), true); + +reportCompare(0, 0); |