| /* Any copyright is dedicated to the Public Domain. |
| * http://creativecommons.org/licenses/publicdomain/ */ |
| |
| // Array.from on a string iterates over the string. |
| assertDeepEq(Array.from("test string"), |
| ['t', 'e', 's', 't', ' ', 's', 't', 'r', 'i', 'n', 'g']); |
| |
| // Array.from on a string handles surrogate pairs correctly. |
| var gclef = "\uD834\uDD1E"; // U+1D11E MUSICAL SYMBOL G CLEF |
| assertDeepEq(Array.from(gclef), [gclef]); |
| assertDeepEq(Array.from(gclef + " G"), [gclef, " ", "G"]); |
| |
| // Array.from on a string calls the @@iterator method. |
| String.prototype[Symbol.iterator] = function* () { yield 1; yield 2; }; |
| assertDeepEq(Array.from("anything"), [1, 2]); |
| |
| // If the iterator method is deleted, Strings are still arraylike. |
| delete String.prototype[Symbol.iterator]; |
| assertDeepEq(Array.from("works"), ['w', 'o', 'r', 'k', 's']); |
| assertDeepEq(Array.from(gclef), ['\uD834', '\uDD1E']); |
| |
| if (typeof reportCompare === 'function') |
| reportCompare(0, 0); |