pjs/js/tests/ecma_2/Exceptions/boolean-002.js

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1.3 KiB
JavaScript

/**
File Name: boolean-001.js
Description: Corresponds to ecma/Boolean/15.6.4.3-4-n.js
15.6.4.3 Boolean.prototype.valueOf()
Returns this boolean value.
The valueOf function is not generic; it generates
a runtime error if its this value is not a Boolean
object. Therefore it cannot be transferred to other
kinds of objects for use as a method.
Author: christine@netscape.com
Date: 09 september 1998
*/
var SECTION = "boolean-002.js";
var VERSION = "JS1_4";
var TITLE = "Boolean.prototype.valueOf()";
startTest();
writeHeaderToLog( SECTION +" "+ TITLE );
var tc = 0;
var testcases = new Array();
var exception = "No exception thrown";
var result = "Failed";
var VALUE_OF = Boolean.prototype.valueOf;
try {
var s = new String("Not a Boolean");
s.valueOf = VALUE_0F;
s.valueOf();
} catch ( e ) {
result = "Passed!";
exception = e.toString();
}
testcases[tc++] = new TestCase(
SECTION,
"Assigning Boolean.prototype.valueOf to a String object "+
"(threw " +exception +")",
"Passed!",
result );
test();