cppcheck/testcharvar.cpp

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/*
* c++check - c/c++ syntax checking
* Copyright (C) 2007 Daniel Marjamäki
*
* 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 3 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, see <http://www.gnu.org/licenses/
*/
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#define UNIT_TESTING
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#include "tokenize.h"
#include "CheckOther.h"
#include "testsuite.h"
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#include <sstream>
extern std::ostringstream errout;
class TestCharVar : public TestFixture
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{
public:
TestCharVar() : TestFixture("TestCharVar")
{ }
private:
void run()
{
TEST_CASE( array_index );
TEST_CASE( bitop1 );
TEST_CASE( bitop2 );
}
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void check( const char code[] )
{
// Tokenize..
Tokenizer tokenizer;
std::istringstream istr(code);
tokenizer.tokenize( istr, "test.cpp" );
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// Clear the error buffer..
errout.str("");
// Check char variable usage..
CheckOther checkOther( &tokenizer, this );
checkOther.CheckCharVariable();
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}
void array_index()
{
check( "void foo()\n"
"{\n"
" unsigned char ch = 0x80;\n"
" buf[ch] = 0;\n"
"}\n" );
ASSERT_EQUALS( std::string(""), errout.str() );
check( "void foo()\n"
"{\n"
" char ch = 0x80;\n"
" buf[ch] = 0;\n"
"}\n" );
ASSERT_EQUALS( std::string("[test.cpp:4]: Warning - using char variable as array index\n"), errout.str() );
check( "void foo(char ch)\n"
"{\n"
" buf[ch] = 0;\n"
"}\n" );
ASSERT_EQUALS( std::string("[test.cpp:3]: Warning - using char variable as array index\n"), errout.str() );
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}
void bitop1()
{
check( "void foo()\n"
"{\n"
" char ch;\n"
" result = a | ch;\n"
"}\n" );
ASSERT_EQUALS( std::string("[test.cpp:4]: Warning - using char variable in bit operation\n"), errout.str() );
}
void bitop2()
{
check( "void foo()\n"
"{\n"
" char ch;\n"
" func(&ch);\n"
"}\n" );
ASSERT_EQUALS( std::string(""), errout.str() );
}
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};
REGISTER_TEST( TestCharVar )
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