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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/language/statements/class/subclass/builtin-objects/Number/regular-subclassing.js | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/class/subclass/builtin-objects/Number/regular-subclassing.js b/js/src/tests/test262/language/statements/class/subclass/builtin-objects/Number/regular-subclassing.js new file mode 100644 index 0000000000..f5764f046f --- /dev/null +++ b/js/src/tests/test262/language/statements/class/subclass/builtin-objects/Number/regular-subclassing.js @@ -0,0 +1,25 @@ +// Copyright (C) 2016 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +es6id: 20.1.1 +description: Subclassing the Number object +info: | + 20.1.1 The Number Constructor + + ... + + The Number constructor is designed to be subclassable. It may be used as the + value of an extends clause of a class definition. Subclass constructors that + intend to inherit the specified Number behaviour must include a super call to + the Number constructor to create and initialize the subclass instance with a + [[NumberData]] internal slot. +---*/ + +class N extends Number {} + +var n = new N(42); + +assert.sameValue(n.toFixed(2), '42.00'); +assert.sameValue(n.toExponential(2), '4.20e+1'); + +reportCompare(0, 0); |