src/third_party/mozjs-45/js/src/tests/test262/ch11/11.8/11.8.3/S11.8.3_A2.3_T1.js

// Copyright 2009 the Sputnik authors.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/**
 * In ES5, First expression should be evaluated first.
 *
 * @path ch11/11.8/11.8.3/S11.8.3_A2.3_T1.js
 * @description Checking that operands of a "<=" evaluate left-to-right
 */

//CHECK#1
var x = { valueOf: function () { throw "x"; } };
var y = { valueOf: function () { throw "y"; } };
try {
   x <= y;
   $ERROR('#1.1: Should have thrown');
} catch (e) {
   if (e === "y") {
     $ERROR('#1.2: First expression should be evaluated first');
   } else {
     if (e !== "x") {
       $ERROR('#1.3: Failed with: ' + e);
     }
   }
}