gecko/js/tests/ecma_3/String/regress-83293.js

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 *   pschwartau@netscape.com, jim@jibbering.com
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var gTestfile = 'regress-83293.js';

/*
 * Creation Date:   30 May 2001
 * Correction Date: 14 Aug 2001
 *
 * SUMMARY:  Regression test for bugs 83293, 103351
 * See http://bugzilla.mozilla.org/show_bug.cgi?id=83293
 *     http://bugzilla.mozilla.org/show_bug.cgi?id=103351
 *     http://bugzilla.mozilla.org/show_bug.cgi?id=92942
 *
 *
 * ********************   CORRECTION !!!  *****************************
 *
 * When I originally wrote this test, I thought this was true:
 * str.replace(strA, strB) == str.replace(new RegExp(strA),strB).
 * See ECMA-262 Final Draft, 15.5.4.11 String.prototype.replace
 *
 * However, in http://bugzilla.mozilla.org/show_bug.cgi?id=83293
 * Jim Ley points out the ECMA-262 Final Edition changed on this.
 * String.prototype.replace (searchValue, replaceValue), if provided
 * a searchValue that is not a RegExp, is NO LONGER to replace it with
 *
 *                  new RegExp(searchValue)
 * but rather:
 *                  String(searchValue)
 *
 * This puts the replace() method at variance with search() and match(),
 * which continue to follow the RegExp conversion of the Final Draft.
 * It also makes most of this testcase, as originally written, invalid.
 **********************************************************************
 */

//-----------------------------------------------------------------------------
var BUGNUMBER = 103351; // <--- (Outgrowth of original bug 83293)
var summ_OLD = 'Testing str.replace(strA, strB) == str.replace(new RegExp(strA),strB)';
var summ_NEW = 'Testing String.prototype.replace(x,y) when x is a string';
var summary = summ_NEW;
var status = '';
var actual = '';
var expect= '';
var cnEmptyString = '';
var str = 'abc';
var strA = cnEmptyString;
var strB = 'Z';


//-----------------------------------------------------------------------------
test();
//-----------------------------------------------------------------------------


/*
 * In this test, it's important to reportCompare() each other case
 * BEFORE the last two cases are attempted. Don't store all results
 * in an array and reportCompare() them at the end, as we usually do.
 *
 * When this bug was filed, str.replace(strA, strB) would return no value
 * whatsoever if strA == cnEmptyString, and no error, either -
 */
function test()
{
  enterFunc ('test');
  printBugNumber(BUGNUMBER);
  printStatus (summary);

/*******************  THESE WERE INCORRECT; SEE ABOVE  ************************
  status = 'Section A of test';
  strA = 'a';
  actual = str.replace(strA, strB);
  expect = str.replace(new RegExp(strA), strB);
  reportCompare(expect, actual, status);

  status = 'Section B of test';
  strA = 'x';
  actual = str.replace(strA, strB);
  expect = str.replace(new RegExp(strA), strB);
  reportCompare(expect, actual, status);

  status = 'Section C of test';
  strA = undefined;
  actual = str.replace(strA, strB);
  expect = str.replace(new RegExp(strA), strB);
  reportCompare(expect, actual, status);

  status = 'Section D of test';
  strA = null;
  actual = str.replace(strA, strB);
  expect = str.replace(new RegExp(strA), strB);
  reportCompare(expect, actual, status);


  * This example is from jim@jibbering.com (see Bugzilla bug 92942)
  * It is a variation on the example below.
  *
  * Namely, we are using the regexp /$/ instead of the regexp //.
  * The regexp /$/ means we should match the "empty string" at the
  * end-boundary of the word, instead of the one at the beginning.
  *
  status = 'Section E of test';
  var strJim = 'aa$aa';
  strA = '$';
  actual = strJim.replace(strA, strB);             // bug -> 'aaZaa'
  expect = strJim.replace(new RegExp(strA), strB); // expect 'aa$aaZ'
  reportCompare(expect, actual, status);


  *
  * Note: 'Zabc' is the result we expect for 'abc'.replace('', 'Z').
  *
  * The string '' is supposed to be equivalent to new RegExp('') = //.
  * The regexp // means we should match the "empty string" conceived of
  * at the beginning boundary of the word, before the first character.
  *
  status = 'Section F of test';
  strA = cnEmptyString;
  actual = str.replace(strA, strB);
  expect = 'Zabc';
  reportCompare(expect, actual, status);

  status = 'Section G of test';
  strA = cnEmptyString;
  actual = str.replace(strA, strB);
  expect = str.replace(new RegExp(strA), strB);
  reportCompare(expect, actual, status);

  *************************  END OF INCORRECT CASES ****************************/


//////////////////////////  OK, LET'S START OVER //////////////////////////////

  status = 'Section 1 of test';
  actual = 'abc'.replace('a', 'Z');
  expect = 'Zbc';
  reportCompare(expect, actual, status);

  status = 'Section 2 of test';
  actual = 'abc'.replace('b', 'Z');
  expect = 'aZc';
  reportCompare(expect, actual, status);

  status = 'Section 3 of test';
  actual = 'abc'.replace(undefined, 'Z');
  expect = 'abc'; // String(undefined) == 'undefined'; no replacement possible
  reportCompare(expect, actual, status);

  status = 'Section 4 of test';
  actual = 'abc'.replace(null, 'Z');
  expect = 'abc'; // String(null) == 'null'; no replacement possible
  reportCompare(expect, actual, status);

  status = 'Section 5 of test';
  actual = 'abc'.replace(true, 'Z');
  expect = 'abc'; // String(true) == 'true'; no replacement possible
  reportCompare(expect, actual, status);

  status = 'Section 6 of test';
  actual = 'abc'.replace(false, 'Z');
  expect = 'abc'; // String(false) == 'false'; no replacement possible
  reportCompare(expect, actual, status);

  status = 'Section 7 of test';
  actual = 'aa$aa'.replace('$', 'Z');
  expect = 'aaZaa'; // NOT 'aa$aaZ' as in ECMA Final Draft; see above
  reportCompare(expect, actual, status);

  status = 'Section 8 of test';
  actual = 'abc'.replace('.*', 'Z');
  expect = 'abc';  // not 'Z' as in EMCA Final Draft
  reportCompare(expect, actual, status);

  status = 'Section 9 of test';
  actual = 'abc'.replace('', 'Z');
  expect = 'Zabc';  // Still expect 'Zabc' for this
  reportCompare(expect, actual, status);

  exitFunc ('test');
}