150 lines
3.5 KiB
C++
150 lines
3.5 KiB
C++
/*
|
|
* Cppcheck - A tool for static C/C++ code analysis
|
|
* Copyright (C) 2007-2009 Daniel Marjamäki and Cppcheck team.
|
|
*
|
|
* 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/>.
|
|
*/
|
|
|
|
|
|
#include "tokenize.h"
|
|
#include "testsuite.h"
|
|
#include "checkunusedfunctions.h"
|
|
#include <sstream>
|
|
|
|
extern std::ostringstream errout;
|
|
|
|
class TestUnusedFunctions : public TestFixture
|
|
{
|
|
public:
|
|
TestUnusedFunctions() : TestFixture("TestUnusedFunctions")
|
|
{ }
|
|
|
|
private:
|
|
|
|
|
|
void run()
|
|
{
|
|
TEST_CASE(incondition);
|
|
TEST_CASE(return1);
|
|
TEST_CASE(return2);
|
|
TEST_CASE(callback1);
|
|
TEST_CASE(else1);
|
|
TEST_CASE(functionpointer);
|
|
TEST_CASE(template1);
|
|
}
|
|
|
|
void check(const char code[])
|
|
{
|
|
// Tokenize..
|
|
Tokenizer tokenizer;
|
|
std::istringstream istr(code);
|
|
tokenizer.tokenize(istr, "test.cpp");
|
|
|
|
// Clear the error buffer..
|
|
errout.str("");
|
|
|
|
// Check for unused functions..
|
|
CheckUnusedFunctions checkUnusedFunctions(this);
|
|
checkUnusedFunctions.parseTokens(tokenizer);
|
|
checkUnusedFunctions.check();
|
|
}
|
|
|
|
void incondition()
|
|
{
|
|
check("int f1()\n"
|
|
"{\n"
|
|
" if (f1())\n"
|
|
" { }\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void return1()
|
|
{
|
|
check("int f1()\n"
|
|
"{\n"
|
|
" return f1();\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void return2()
|
|
{
|
|
check("char * foo()\n"
|
|
"{\n"
|
|
" return *foo();\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void callback1()
|
|
{
|
|
check("void f1()\n"
|
|
"{\n"
|
|
" void (*f)() = cond ? f1 : NULL;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void else1()
|
|
{
|
|
check("void f1()\n"
|
|
"{\n"
|
|
" if (cond) ;\n"
|
|
" else f1();\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void functionpointer()
|
|
{
|
|
check("namespace abc {\n"
|
|
"void foo() { }\n"
|
|
"};\n"
|
|
"\n"
|
|
"int main()\n"
|
|
"{\n"
|
|
" f(&abc::foo);\n"
|
|
" return 0\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("namespace abc {\n"
|
|
"void foo() { }\n"
|
|
"};\n"
|
|
"\n"
|
|
"int main()\n"
|
|
"{\n"
|
|
" f = &abc::foo;\n"
|
|
" return 0\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void template1()
|
|
{
|
|
check("template<class T> void foo() { }\n"
|
|
"\n"
|
|
"int main()\n"
|
|
"{\n"
|
|
" foo<int>();\n"
|
|
" return 0\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
};
|
|
|
|
REGISTER_TEST(TestUnusedFunctions)
|
|
|