QUnit_assertRaises.js

/**
 * Checks that the given expression throws an exception of the expected type, with an optional message.
 *
 * @example raises( function() { return foo.bar; }, "TypeError", "invalid property access raises TypeError exception" );
 *
 * @param Function expression
 * @param String expected exception type
 * @param String message (optional)
 */
function raises(expression, expected, message) {
	try {
		push(false, expression(), expected, message);
	} catch(ex) {
		console.log(message, ex.name, ex);
		push(ex.name == expected, ex.name, expected, message);
	}
}