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/*
* steghide 0.5.1 - a steganography program
* Copyright (C) 1999-2003 Stefan Hetzl <shetzl@chello.at>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#include <vector>
#include "Selector.h"
#include "SelectorTest.h"
#include "TestCategoryCaller.h"
SelectorTest::SelectorTest (TestSuite* s)
: UnitTest ("Selector", s)
{
ADDTESTCATEGORY (SelectorTest, testIsPermutation) ;
ADDTESTCATEGORY (SelectorTest, testIsIdentityPermutation) ;
}
void SelectorTest::setup ()
{
s1 = new Selector (10, "a passphrase") ;
s2 = new Selector (50, "another passphrase") ;
s3 = new Selector (10000, "a large Selector object") ;
s4 = new Selector (128, "a smaller object again") ;
sid1 = new Selector (16) ;
sid2 = new Selector (1234) ;
}
void SelectorTest::cleanup ()
{
delete s1 ; delete s2 ; delete s3 ; delete s4 ;
delete sid1 ; delete sid2 ;
}
void SelectorTest::testIsPermutation ()
{
addTestResult (genericTestIsPermutation (s1)) ;
addTestResult (genericTestIsPermutation (s2)) ;
addTestResult (genericTestIsPermutation (s3)) ;
addTestResult (genericTestIsPermutation (s4)) ;
}
void SelectorTest::testIsIdentityPermutation ()
{
addTestResult (genericTestIsIdentityPermutation (sid1)) ;
addTestResult (genericTestIsIdentityPermutation (sid2)) ;
}
bool SelectorTest::genericTestIsPermutation (Selector* s)
{
std::vector<bool> hasoccurred (s->getRange()) ; // all set to false
bool range_ok = true ;
bool inj = true ;
for (UWORD32 i = 0 ; i < s->getRange() ; i++) {
UWORD32 value = (*s)[i] ;
range_ok = (value < s->getRange()) && range_ok ;
inj = !hasoccurred[value] && inj ;
hasoccurred[value] = true ;
}
bool surj = true ;
for (UWORD32 i = 0 ; i < s->getRange() ; i++) {
surj = hasoccurred[i] && surj ;
}
return range_ok && inj && surj ;
}
bool SelectorTest::genericTestIsIdentityPermutation (Selector* s)
{
bool ok = true ;
for (UWORD32 i = 0 ; i < s->getRange() ; i++) {
ok = ((*s)[i] == i) && ok ;
}
return ok ;
}
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