| // Copyright 2009 the Sputnik authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| info: | |
| The toString function is not generic; it throws a TypeError exception if |
| its this value is not a String object. Therefore, it cannot be |
| transferred to other kinds of objects for use as a method |
| es5id: 15.5.4.2_A2_T1 |
| description: Checking if creating variable String.prototype.toString fails |
| ---*/ |
| |
| var __toString = String.prototype.toString; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| //CHECK#1 |
| if (typeof __toString !== "function") { |
| $ERROR('#1: __toString = String.prototype.toString; typeof __toString === "function". Actual: typeof __toString ==='+typeof __toString ); |
| } |
| |
| // |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| //CHECK#2 |
| try { |
| var x = __toString(); |
| $ERROR('#2: "__toString = String.prototype.toString; var x = __toString();" lead to throwing exception'); |
| } catch (e) { |
| if (!(e instanceof TypeError)) { |
| $ERROR('#2.1: "__toString = String.prototype.toString; var x = __toString();" lead to throwing exception. Exception is instance of TypeError. Actual: exception is '+e); |
| } |
| } |
| // |
| ////////////////////////////////////////////////////////////////////////////// |