The Tor Browser: comparison js/src/tests/js1_5/Exceptions/errstack-001.js

comparison: js/src/tests/js1_5/Exceptions/errstack-001.js

js/src/tests/js1_5/Exceptions/errstack-001.js

branch: TOR_BUG_3246
changeset 7: 129ffea94266

equal deleted inserted replaced

--1:000000000000
+:be65b3d9503a
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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/. */
+/*
+*
+* Date:    28 Feb 2002
+* SUMMARY: Testing that Error.stack distinguishes between:
+*
+* A) top-level calls: myFunc();
+* B) no-name function calls: function() { myFunc();} ()
+*
+* The stack frame for A) should begin with '@'
+* The stack frame for B) should begin with '()'
+*
+* This behavior was coded by Brendan during his fix for bug 127136.
+* See http://bugzilla.mozilla.org/show_bug.cgi?id=127136#c13
+*
+* Note: our function getStackFrames(err) orders the array of stack frames
+* so that the 0th element will correspond to the highest frame, i.e. will
+* correspond to a line in top-level code. The 1st element will correspond
+* to the function that is called first, and so on...
+*
+* NOTE: At present Rhino does not have an Error.stack property. It is an
+* ECMA extension, see http://bugzilla.mozilla.org/show_bug.cgi?id=123177
+*/
+//-----------------------------------------------------------------------------
+var UBound = 0;
+var BUGNUMBER = '(none)';
+var summary = 'Testing Error.stack';
+var status = '';
+var statusitems = [];
+var actual = '';
+var actualvalues = [];
+var expect= '';
+var expectedvalues = [];
+var myErr = '';
+var stackFrames = '';
+function A(x,y)
+{
+return B(x+1,y+1);
+}
+function B(x,z)
+{
+return C(x+1,z+1);
+}
+function C(x,y)
+{
+return D(x+1,y+1);
+}
+function D(x,z)
+{
+try
+{
+throw new Error('meep!');
+}
+catch (e)
+{
+return e;
+}
+}
+myErr = A(44,13);
+stackFrames = getStackFrames(myErr);
+status = inSection(1);
+actual = stackFrames[0].substring(0,1);
+expect = '@';
+addThis();
+status = inSection(2);
+actual = stackFrames[1].substring(0,2);
+expect = 'A@';
+addThis();
+status = inSection(3);
+actual = stackFrames[2].substring(0,2);
+expect = 'B@';
+addThis();
+status = inSection(4);
+actual = stackFrames[3].substring(0,2);
+expect = 'C@';
+addThis();
+status = inSection(5);
+actual = stackFrames[4].substring(0,2);
+expect = 'D@';
+addThis();
+myErr = A('44:foo','13:bar');
+stackFrames = getStackFrames(myErr);
+status = inSection(6);
+actual = stackFrames[0].substring(0,1);
+expect = '@';
+addThis();
+status = inSection(7);
+actual = stackFrames[1].substring(0,2);
+expect = 'A@';
+addThis();
+status = inSection(8);
+actual = stackFrames[2].substring(0,2);
+expect = 'B@';
+addThis();
+status = inSection(9);
+actual = stackFrames[3].substring(0,2);
+expect = 'C@';
+addThis();
+status = inSection(10);
+actual = stackFrames[4].substring(0,2);
+expect = 'D@';;
+addThis();
+/*
+* Make the first frame occur in a function with an empty name -
+*/
+myErr = function() { return A(44,13); } ();
+stackFrames = getStackFrames(myErr);
+status = inSection(11);
+actual = stackFrames[0].substring(0,1);
+expect = '@';
+addThis();
+status = inSection(12);
+actual = stackFrames[1].substring(0,7);
+expect = 'myErr<@';
+addThis();
+status = inSection(13);
+actual = stackFrames[2].substring(0,2);
+expect = 'A@';
+addThis();
+// etc. for the rest of the frames as above
+/*
+* Make the first frame occur in a function with name 'anonymous' -
+*/
+var f = Function('return A(44,13);');
+myErr = f();
+stackFrames = getStackFrames(myErr);
+status = inSection(14);
+actual = stackFrames[0].substring(0,1);
+expect = '@';
+addThis();
+status = inSection(15);
+actual = stackFrames[1].substring(0,10);
+expect = 'anonymous@';
+addThis();
+status = inSection(16);
+actual = stackFrames[2].substring(0,2);
+expect = 'A@';
+addThis();
+// etc. for the rest of the frames as above
+/*
+* Make a user-defined error via the Error() function -
+*/
+var message = 'Hi there!'; var fileName = 'file name'; var lineNumber = 0;
+myErr = Error(message, fileName, lineNumber);
+stackFrames = getStackFrames(myErr);
+status = inSection(17);
+actual = stackFrames[0].substring(0,1);
+expect = '@';
+addThis();
+/*
+* Now use the |new| keyword. Re-use the same params -
+*/
+myErr = new Error(message, fileName, lineNumber);
+stackFrames = getStackFrames(myErr);
+status = inSection(18);
+actual = stackFrames[0].substring(0,1);
+expect = '@';
+addThis();
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+/*
+* Split the string |err.stack| along its '\n' delimiter.
+* As of 2002-02-28 |err.stack| ends with the delimiter, so
+* the resulting array has an empty string as its last element.
+*
+* Pop that useless element off before doing anything.
+* Then reverse the array, for convenience of indexing -
+*/
+function getStackFrames(err)
+{
+var arr = err.stack.split('\n');
+arr.pop();
+return arr.reverse();
+}
+function addThis()
+{
+statusitems[UBound] = status;
+actualvalues[UBound] = actual;
+expectedvalues[UBound] = expect;
+UBound++;
+}
+function test()
+{
+enterFunc('test');
+printBugNumber(BUGNUMBER);
+printStatus(summary);
+for (var i=0; i<UBound; i++)
+{
+reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
+}
+exitFunc ('test');
+}