tor-browser

shell.js (7031B)

---

/* -*- tab-width: 2; indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/*---
defines: [testRegExp, makeExpectedMatch, checkRegExpMatch]
allow_unused: True
---*/

/*
* Date: 07 February 2001
*
* Functionality common to RegExp testing -
*/
//-----------------------------------------------------------------------------

(function(global) {

 var MSG_PATTERN = '\nregexp = ';
 var MSG_STRING = '\nstring = ';
 var MSG_EXPECT = '\nExpect: ';
 var MSG_ACTUAL = '\nActual: ';
 var ERR_LENGTH = '\nERROR !!! match arrays have different lengths:';
 var ERR_MATCH = '\nERROR !!! regexp failed to give expected match array:';
 var ERR_NO_MATCH = '\nERROR !!! regexp FAILED to match anything !!!';
 var ERR_UNEXP_MATCH = '\nERROR !!! regexp MATCHED when we expected it to fail !!!';
 var CHAR_LBRACKET = '[';
 var CHAR_RBRACKET = ']';
 var CHAR_QT_DBL = '"';
 var CHAR_QT = "'";
 var CHAR_NL = '\n';
 var CHAR_COMMA = ',';
 var CHAR_SPACE = ' ';
 var TYPE_STRING = typeof 'abc';



 global.testRegExp = function testRegExp(statuses, patterns, strings, actualmatches, expectedmatches)
 {
   var status = '';
   var pattern = new RegExp();
   var string = '';
   var actualmatch = new Array();
   var expectedmatch = new Array();
   var state = '';
   var lActual = -1;
   var lExpect = -1;


   for (var i=0; i != patterns.length; i++)
   {
     status = statuses[i];
     pattern = patterns[i];
     string = strings[i];
     actualmatch=actualmatches[i];
     expectedmatch=expectedmatches[i];
     state = getState(status, pattern, string);

     description = status;

     if(actualmatch)
     {
       actual = formatArray(actualmatch);
       if(expectedmatch)
       {
         // expectedmatch and actualmatch are arrays -
         lExpect = expectedmatch.length;
         lActual = actualmatch.length;

         var expected = formatArray(expectedmatch);

         if (lActual != lExpect)
         {
           reportCompare(lExpect, lActual,
                         state + ERR_LENGTH +
                         MSG_EXPECT + expected +
                         MSG_ACTUAL + actual +
                         CHAR_NL
                       );
           continue;
         }

         // OK, the arrays have same length -
         if (expected != actual)
         {
           reportCompare(expected, actual,
                         state + ERR_MATCH +
                         MSG_EXPECT + expected +
                         MSG_ACTUAL + actual +
                         CHAR_NL
                       );
         }
         else
         {
           reportCompare(expected, actual, state)
        }

       }
       else //expectedmatch is null - that is, we did not expect a match -
       {
         expected = expectedmatch;
         reportCompare(expected, actual,
                       state + ERR_UNEXP_MATCH +
                       MSG_EXPECT + expectedmatch +
                       MSG_ACTUAL + actual +
                       CHAR_NL
                     );
       }

     }
     else // actualmatch is null
     {
       if (expectedmatch)
       {
         actual = actualmatch;
         reportCompare(expected, actual,
                       state + ERR_NO_MATCH +
                       MSG_EXPECT + expectedmatch +
                       MSG_ACTUAL + actualmatch +
                       CHAR_NL
                     );
       }
       else // we did not expect a match
       {
         // Being ultra-cautious. Presumably expectedmatch===actualmatch===null
         expected = expectedmatch;
         actual   = actualmatch;
         reportCompare (expectedmatch, actualmatch, state);
       }
     }
   }
 }

 function getState(status, pattern, string)
 {
   /*
    * Escape \n's, etc. to make them LITERAL in the presentation string.
    * We don't have to worry about this in |pattern|; such escaping is
    * done automatically by pattern.toString(), invoked implicitly below.
    *
    * One would like to simply do: string = string.replace(/(\s)/g, '\$1').
    * However, the backreference $1 is not a literal string value,
    * so this method doesn't work.
    *
    * Also tried string = string.replace(/(\s)/g, escape('$1'));
    * but this just inserts the escape of the literal '$1', i.e. '%241'.
    */
   string = string.replace(/\n/g, '\\n');
   string = string.replace(/\r/g, '\\r');
   string = string.replace(/\t/g, '\\t');
   string = string.replace(/\v/g, '\\v');
   string = string.replace(/\f/g, '\\f');

   return (status + MSG_PATTERN + pattern + MSG_STRING + singleQuote(string));
 }



 /*
  * If available, arr.toSource() gives more detail than arr.toString()
  *
  * var arr = Array(1,2,'3');
  *
  * arr.toSource()
  * [1, 2, "3"]
  *
  * arr.toString()
  * 1,2,3
  *
  * But toSource() doesn't exist in Rhino, so use our own imitation, below -
  *
  */
 function formatArray(arr)
 {
   try
   {
     return arr.toSource();
   }
   catch(e)
   {
     return toSource(arr);
   }
 }


 /*
  * Imitate SpiderMonkey's arr.toSource() method:
  *
  * a) Double-quote each array element that is of string type
  * b) Represent |undefined| and |null| by empty strings
  * c) Delimit elements by a comma + single space
  * d) Do not add delimiter at the end UNLESS the last element is |undefined|
  * e) Add square brackets to the beginning and end of the string
  */
 function toSource(arr)
 {
   var delim = CHAR_COMMA + CHAR_SPACE;
   var elt = '';
   var ret = '';
   var len = arr.length;

   for (i=0; i<len; i++)
   {
     elt = arr[i];

     switch(true)
     {
       case (typeof elt === TYPE_STRING) :
       ret += doubleQuote(elt);
       break;

       case (elt === undefined || elt === null) :
       break; // add nothing but the delimiter, below -

       default:
       ret += elt.toString();
     }

     if ((i < len-1) || (elt === undefined))
       ret += delim;
   }

   return  CHAR_LBRACKET + ret + CHAR_RBRACKET;
 }


 function doubleQuote(text)
 {
   return CHAR_QT_DBL + text + CHAR_QT_DBL;
 }


 function singleQuote(text)
 {
   return CHAR_QT + text + CHAR_QT;
 }

 global.makeExpectedMatch = function makeExpectedMatch(arr, index, input) {
   var expectedMatch = {
     index: index,
     input: input,
     length: arr.length,
   };

   for (var i = 0; i < arr.length; ++i)
     expectedMatch[i] = arr[i];

   return expectedMatch;
 }

 global.checkRegExpMatch = function checkRegExpMatch(actual, expected) {
   assertEq(actual.length, expected.length);
   for (var i = 0; i < actual.length; ++i)
     assertEq(actual[i], expected[i]);

   assertEq(actual.index, expected.index);
   assertEq(actual.input, expected.input);
 }

})(this);