third_party/WebKit/LayoutTests/fast/js/mozilla/strict/script-tests/this-for-function-expression-recursion.js

   1 /*
   2  * Any copyright is dedicated to the Public Domain.
   3  * http://creativecommons.org/licenses/publicdomain/
   4  */
   5
   6 var gTestfile = 'this-for-function-expression-recursion.js';
   7 var BUGNUMBER = 611276;
   8 var summary = "JSOP_CALLEE should push undefined, not null, for this";
   9
  10 print(BUGNUMBER + ": " + summary);
  11
  12 /**************
  13  * BEGIN TEST *
  14  **************/
  15
  16 // Calling a named function expression (not function statement) uses the
  17 // JSOP_CALLEE opcode.  This opcode pushes its own |this|, distinct from the
  18 // normal call path; verify that that |this| value is properly |undefined|.
  19
  20 var calleeThisFun =
  21   function calleeThisFun(recurring)
  22   {
  23     if (recurring)
  24       return this;
  25     return calleeThisFun(true);
  26   };
  27 assertEq(calleeThisFun(false), this);
  28
  29 var calleeThisStrictFun =
  30   function calleeThisStrictFun(recurring)
  31   {
  32     "use strict";
  33     if (recurring)
  34       return this;
  35     return calleeThisStrictFun(true);
  36   };
  37 assertEq(calleeThisStrictFun(false), undefined);
  38
  39 /******************************************************************************/
  40
  41 if (typeof reportCompare === "function")
  42   reportCompare(true, true);
  43
  44 print("All tests passed!");
  45
  46 var successfullyParsed = true;