cppcheck/testfunctionusage.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/
*/
#define UNIT_TESTING
#include "tokenize.h"
#include "testsuite.h"
#include "CheckFunctionUsage.h"
#include <sstream>
extern std::ostringstream errout;
class TestFunctionUsage : public TestFixture
{
public:
TestFunctionUsage() : TestFixture("TestFunctionUsage")
{ }
private:
void run()
{
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TEST_CASE( incondition );
TEST_CASE( return1 );
TEST_CASE( callback1 );
TEST_CASE( else1 );
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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 for unused functions..
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CheckFunctionUsage checkFunctionUsage(this);
checkFunctionUsage.parseTokens( tokenizer );
checkFunctionUsage.check();
}
void incondition()
{
check( "int f1()\n"
"{\n"
" if (f1())\n"
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" { }\n"
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"}\n" );
std::string err( errout.str() );
ASSERT_EQUALS( std::string(""), errout.str() );
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}
void return1()
{
check( "int f1()\n"
"{\n"
" return f1();\n"
"}\n" );
std::string err( errout.str() );
ASSERT_EQUALS( std::string(""), errout.str() );
}
void callback1()
{
check( "void f1()\n"
"{\n"
" void (*f)() = cond ? f1 : NULL;\n"
"}\n" );
std::string err( errout.str() );
ASSERT_EQUALS( std::string(""), errout.str() );
}
void else1()
{
check( "void f1()\n"
"{\n"
" if (cond) ;\n"
" else f1();\n"
"}\n" );
std::string err( errout.str() );
ASSERT_EQUALS( std::string(""), errout.str() );
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}
};
REGISTER_TEST( TestFunctionUsage )