diff --git a/js/tests/js1_5/LexicalConventions/lexical-001.js b/js/tests/js1_5/LexicalConventions/lexical-001.js
new file mode 100644
index 000000000000..7829a0282020
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+++ b/js/tests/js1_5/LexicalConventions/lexical-001.js
@@ -0,0 +1,161 @@
+/*
+* The contents of this file are subject to the Netscape Public
+* License Version 1.1 (the "License"); you may not use this file
+* except in compliance with the License. You may obtain a copy of
+* the License at http://www.mozilla.org/NPL/
+*
+* Software distributed under the License is distributed on an "AS
+* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+* implied. See the License for the specific language governing
+* rights and limitations under the License.
+*
+* The Original Code is mozilla.org code.
+*
+* The Initial Developer of the Original Code is Netscape
+* Communications Corporation.  Portions created by Netscape are
+* Copyright (C) 1998 Netscape Communications Corporation. All
+* Rights Reserved.
+*
+* Contributor(s): pschwartau@netscape.com  
+*                            26 November 2000
+*
+*
+*SUMMARY: Testing numeric literals that begin with 0. 
+*This test arose from Bugzilla bug 49233.
+*The best explanation is from jsscan.c:                
+*
+*     "We permit 08 and 09 as decimal numbers, which makes 
+*     our behaviour a superset of the ECMA numeric grammar.  
+*     We might not always be so permissive, so we warn about it."
+*
+*Thus an expresion 010 will evaluate, as always, as an octal (to 8).
+*However, 018 will evaluate as a decimal, to 18. Even though the
+*user began the expression as an octal, he later used a non-octal
+*digit. We forgive this and assume he intended a decimal. If the
+*JavaScript "strict" option is set though, we will give a warning.
+*/
+//-------------------------------------------------------------------------------------------------
+var bug = '49233';
+var summary = 'Testing numeric literals that begin with 0';
+var statprefix = 'Testing ';
+var quote = "'";
+var status = new Array();
+var actual = new Array();
+var expect = new Array();
+
+
+status[0]=showStatus('01')
+actual[0]=01
+expect[0]=1
+
+status[1]=showStatus('07')
+actual[1]=07
+expect[1]=7
+
+status[2]=showStatus('08')
+actual[2]=08
+expect[2]=8
+
+status[3]=showStatus('09')
+actual[3]=09
+expect[3]=9
+
+status[4]=showStatus('010')
+actual[4]=010
+expect[4]=8
+
+status[5]=showStatus('017')
+actual[5]=017
+expect[5]=15
+
+status[6]=showStatus('018')
+actual[6]=018
+expect[6]=18
+
+status[7]=showStatus('019')
+actual[7]=019
+expect[7]=19
+
+status[8]=showStatus('079')
+actual[8]=079
+expect[8]=79
+
+status[9]=showStatus('0079')
+actual[9]=0079
+expect[9]=79
+
+status[10]=showStatus('099')
+actual[10]=099
+expect[10]=99
+
+status[11]=showStatus('0099')
+actual[11]=0099
+expect[11]=99
+
+status[12]=showStatus('000000000077')
+actual[12]=000000000077
+expect[12]=63
+
+status[13]=showStatus('000000000078')
+actual[13]=000000000078
+expect[13]=78
+
+status[14]=showStatus('0000000000770000')
+actual[14]=0000000000770000
+expect[14]=258048
+
+status[15]=showStatus('0000000000780000')
+actual[15]=0000000000780000
+expect[15]=780000
+
+status[16]=showStatus('0765432198')
+actual[16]=0765432198
+expect[16]=765432198
+
+status[17]=showStatus('00076543219800')
+actual[17]=00076543219800
+expect[17]=76543219800
+
+status[18]=showStatus('0000001001007')
+actual[18]=0000001001007
+expect[18]=262663
+
+status[19]=showStatus('0000001001009')
+actual[19]=0000001001009
+expect[19]=1001009
+
+status[20]=showStatus('070')
+actual[20]=070
+expect[20]=56
+
+status[21]=showStatus('080')
+actual[21]=080
+expect[21]=80
+
+
+
+//-------------------------------------------------------------------------------------------------
+test();
+//-------------------------------------------------------------------------------------------------
+
+
+function showStatus(msg)
+{
+  return (statprefix  + quote  +  msg  + quote);
+}
+
+
+function test() 
+{
+  enterFunc ('test'); 
+  printBugNumber (bug);
+  printStatus (summary);
+
+
+  for (i=0; i !=status.length; i++)
+  {
+    reportCompare (expect[i], actual[i], status[i]);
+  }
+
+  exitFunc ('test');
+}
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