| // Copyright (C) 2017 Valerie Young. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-string.prototype.trimStart |
| description: Type error when "this" value is a Symbol |
| info: | |
| Runtime Semantics: TrimString ( string, where ) |
| 2. Let S be ? ToString(str). |
| |
| ToString ( argument ) |
| Argument Type: Symbol |
| Result: Throw a TypeError exception |
| features: [string-trimming, String.prototype.trimStart] |
| ---*/ |
| |
| var trimStart = String.prototype.trimStart; |
| var symbol = Symbol(); |
| |
| assert.throws( |
| TypeError, |
| function() { trimStart.call(symbol); }, |
| 'String.prototype.trimStart.call(Symbol())' |
| ); |
