diff options
Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/language/statements/class/subclass/builtin-objects/Array/regular-subclassing.js | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/class/subclass/builtin-objects/Array/regular-subclassing.js b/js/src/tests/test262/language/statements/class/subclass/builtin-objects/Array/regular-subclassing.js new file mode 100644 index 0000000000..3b5df29719 --- /dev/null +++ b/js/src/tests/test262/language/statements/class/subclass/builtin-objects/Array/regular-subclassing.js @@ -0,0 +1,35 @@ +// Copyright (C) 2016 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +es6id: 22.1.1 +description: Subclassing Array +info: | + 22.1.1 The Array Constructor + + The Array constructor is designed to be subclassable. It may be used as the + value of an extends clause of a class definition. (...) +includes: [compareArray.js] +---*/ + +class Sub extends Array {} + +var a1 = new Sub(42, 'foo'); + +assert.sameValue(a1.length, 2); +assert.sameValue(a1[0], 42); +assert.sameValue(a1[1], 'foo'); + +a1.push(true); +assert.sameValue(a1.length, 3, 'Array#push updates the length property'); +assert.sameValue(a1[0], 42); +assert.sameValue(a1[1], 'foo'); +assert.sameValue(a1[2], true, 'Adds new item'); + +var a2 = new Sub(7); +assert.sameValue(a2.length, 7); + +var a3 = new Sub(); +assert.compareArray(a3, []); +assert.sameValue(a3.length, 0); + +reportCompare(0, 0); |