The Tor Browser: js/src/tests/ecma_5/RegExp/exec.js@6474c204b198 (annotated)

js/src/tests/ecma_5/RegExp/exec.js@6474c204b198 (annotated)

js/src/tests/ecma_5/RegExp/exec.js

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /*
  * Any copyright is dedicated to the Public Domain.
  * http://creativecommons.org/licenses/publicdomain/
  */
 var BUGNUMBER = 646490;
 var summary =
   "RegExp.prototype.exec doesn't get the lastIndex and ToInteger() it for " +
   "non-global regular expressions when it should";
 print(BUGNUMBER + ": " + summary);
 /**************
  * BEGIN TEST *
  **************/
 function expectThrowTypeError(fun)
 {
   try
   {
     var r = fun();
     throw new Error("didn't throw TypeError, returned " + r);
   }
   catch (e)
   {
     assertEq(e instanceof TypeError, true,
              "didn't throw TypeError, got: " + e);
   }
 }
 function checkExec(description, regex, args, obj)
 {
   var lastIndex = obj.lastIndex;
   var index = obj.index;
   var input = obj.input;
   var indexArray = obj.indexArray;
   var res = regex.exec.apply(regex, args);
   assertEq(Array.isArray(res), true, description + ": not an array");
   assertEq(regex.lastIndex, lastIndex, description + ": wrong lastIndex");
   assertEq(res.index, index, description + ": wrong index");
   assertEq(res.input, input, description + ": wrong input");
   assertEq(res.length, indexArray.length, description + ": wrong length");
   for (var i = 0, sz = indexArray.length; i < sz; i++)
     assertEq(res[i], indexArray[i], description + " " + i + ": wrong index value");
 }
 var exec = RegExp.prototype.exec;
 var r, res, called, obj;
 /* 1. Let R be this RegExp object. */
 expectThrowTypeError(function() { exec.call(null); });
 expectThrowTypeError(function() { exec.call(""); });
 expectThrowTypeError(function() { exec.call(5); });
 expectThrowTypeError(function() { exec.call({}); });
 expectThrowTypeError(function() { exec.call([]); });
 expectThrowTypeError(function() { exec.call(); });
 expectThrowTypeError(function() { exec.call(true); });
 expectThrowTypeError(function() { exec.call(Object.create(RegExp.prototype)); });
 expectThrowTypeError(function() { exec.call(Object.create(/a/)); });
 /* 2. Let S be the value of ToString(string). */
 called = false;
 r = /a/;
 assertEq(r.lastIndex, 0);
 checkExec("/a/", r, [{ toString: function() { called = true; return 'ba'; } }],
           { lastIndex: 0,
             index: 1,
             input: "ba",
             indexArray: ["a"] });
 assertEq(called, true);
 called = false;
 try
 {
   res = r.exec({ toString: null, valueOf: function() { called = true; throw 17; } });
   throw new Error("didn't throw");
 }
 catch (e)
 {
   assertEq(e, 17);
 }
 assertEq(called, true);
 called = false;
 obj = r.lastIndex = { valueOf: function() { assertEq(true, false, "shouldn't have been called"); } };
 try
 {
   res = r.exec({ toString: null, valueOf: function() { assertEq(called, false); called = true; throw 17; } });
   throw new Error("didn't throw");
 }
 catch (e)
 {
   assertEq(e, 17);
 }
 assertEq(called, true);
 assertEq(r.lastIndex, obj);
 // We don't test lack of an argument because of RegExp statics non-standard
 // behaviors overriding what really should happen for lack of an argument, sigh.
 /*
  * 3. Let length be the length of S.
  * 4. Let lastIndex be the result of calling the [[Get]] internal method of R with argument "lastIndex".
  * 5. Let i be the value of ToInteger(lastIndex).
  */
 r = /b/;
 r.lastIndex = { valueOf: {}, toString: {} };
 expectThrowTypeError(function() { r.exec("foopy"); });
 r.lastIndex = { valueOf: function() { throw new TypeError(); } };
 expectThrowTypeError(function() { r.exec("foopy"); });
 /*
  * 6. Let global be the result of calling the [[Get]] internal method of R with argument "global".
  * 7. If global is false, then let i = 0.
  */
 obj = { valueOf: function() { return 5; } };
 r = /abc/;
 r.lastIndex = obj;
 checkExec("/abc/ take one", r, ["abc-------abc"],
           { lastIndex: obj,
             index: 0,
             input: "abc-------abc",
             indexArray: ["abc"] });
 checkExec("/abc/ take two", r, ["abc-------abc"],
           { lastIndex: obj,
             index: 0,
             input: "abc-------abc",
             indexArray: ["abc"] });
 /*
  * 8. Let matchSucceeded be false.
  * 9. Repeat, while matchSucceeded is false
  *    a. If i < 0 or i > length, then
  *       i. Call the [[Put]] internal method of R with arguments "lastIndex", 0, and true.
  *       ii. Return null.
  *    b. Call the [[Match]] internal method of R with arguments S and i.
  *    c. If [[Match]] returned failure, then
  *       i. Let i = i+1.
  *    d. else
  *       i. Let r be the State result of the call to [[Match]].
  *       ii. Set matchSucceeded to true.
  *    e. Let i = i+1.
  */
 r = /abc()?/;
 r.lastIndex = -5;
 checkExec("/abc()?/ with lastIndex -5", r, ["abc-------abc"],
           { lastIndex: -5,
             index: 0,
             input: "abc-------abc",
             indexArray: ["abc", undefined] });
 r = /abc/;
 r.lastIndex = -17;
 res = r.exec("cdefg");
 assertEq(res, null);
 assertEq(r.lastIndex, 0);
 r = /abc/g;
 r.lastIndex = -42;
 res = r.exec("cdefg");
 assertEq(res, null);
 assertEq(r.lastIndex, 0);
 /*
  * 10. Let e be r's endIndex value.
  * 11. If global is true,
  *     a. Call the [[Put]] internal method of R with arguments "lastIndex", e, and true.
  */
 r = /abc/g;
 r.lastIndex = 17;
 assertEq(r.exec("sdfs"), null);
 assertEq(r.lastIndex, 0);
 r = /abc/g;
 r.lastIndex = 2;
 checkExec("/abc/g", r, ["00abc"],
           { lastIndex: 5,
             index: 2,
             input: "00abc",
             indexArray: ["abc"] });
 r = /a(b)c/g;
 r.lastIndex = 2;
 checkExec("/a(b)c/g take two", r, ["00abcd"],
           { lastIndex: 5,
             index: 2,
             input: "00abcd",
             indexArray: ["abc", "b"] });
 /*
  * 12. Let n be the length of r's captures array. (This is the same value as
  *     15.10.2.1's NCapturingParens.)
  * 13. Let A be a new array created as if by the expression new Array() where
  *     Array is the standard built-in constructor with that name.
  * 14. Let matchIndex be the position of the matched substring within the
  *     complete String S.
  * 15. Call the [[DefineOwnProperty]] internal method of A with arguments
  *     "index", Property Descriptor {[[Value]]: matchIndex, [[Writable]: true,
  *     [[Enumerable]]: true, [[Configurable]]: true}, and true.
  * 16. Call the [[DefineOwnProperty]] internal method of A with arguments
  *     "input", Property Descriptor {[[Value]]: S, [[Writable]: true,
  *     [[Enumerable]]: true, [[Configurable]]: true}, and true.
  * 17. Call the [[DefineOwnProperty]] internal method of A with arguments
  *     "length", Property Descriptor {[[Value]]: n + 1}, and true.
  * 18. Let matchedSubstr be the matched substring (i.e. the portion of S
  *     between offset i inclusive and offset e exclusive).
  * 19. Call the [[DefineOwnProperty]] internal method of A with arguments "0",
  *     Property Descriptor {[[Value]]: matchedSubstr, [[Writable]: true,
  *     [[Enumerable]]: true, [[Configurable]]: true}, and true.
  * 20. For each integer i such that I > 0 and I ≤ n
  *     a. Let captureI be i th element of r's captures array.
  *     b. Call the [[DefineOwnProperty]] internal method of A with arguments
  *        ToString(i), Property Descriptor {[[Value]]: captureI, [[Writable]:
  *        true, [[Enumerable]]: true, [[Configurable]]: true}, and true.
  * 21. Return A.
  */
 // throughout, above (and in other tests)
 /******************************************************************************/
 if (typeof reportCompare === "function")
   reportCompare(true, true);
 print("All tests passed!");