cppcheck/testredundantif.cpp

88 lines
2.4 KiB
C++

/*
* cppcheck - c/c++ syntax checking
* Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam
*
* 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/
*/
// Check for dangerous division..
// such as "svar / uvar". Treating "svar" as unsigned data is not good
#define UNIT_TESTING
#include "tokenize.h"
#include "checkother.h"
#include "testsuite.h"
#include <sstream>
extern std::ostringstream errout;
class TestRedundantIf : public TestFixture
{
public:
TestRedundantIf() : TestFixture("TestRedundantIf")
{ }
private:
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 redundant condition..
CheckOther checkOther(&tokenizer, this);
checkOther.redundantCondition2();
}
void run()
{
TEST_CASE(remove1);
TEST_CASE(remove2);
}
void remove1()
{
check("void f()\n"
"{\n"
" if (haystack.find(needle) != haystack.end())\n"
" haystack.remove(needle);"
"}\n");
ASSERT_EQUALS(std::string("[test.cpp:3]: Redundant condition found. The remove function in the STL will not do anything if element doesn't exist\n"), errout.str());
}
void remove2()
{
check("void f()\n"
"{\n"
" if (haystack.find(needle) != haystack.end())\n"
" {\n"
" haystack.remove(needle);\n"
" }\n"
"}\n");
ASSERT_EQUALS(std::string("[test.cpp:3]: Redundant condition found. The remove function in the STL will not do anything if element doesn't exist\n"), errout.str());
}
};
REGISTER_TEST(TestRedundantIf)