cppcheck/test/testvalueflow.cpp

73 lines
2.2 KiB
C++

/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2013 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 "testsuite.h"
#include "testutils.h"
#include "valueflow.h"
#include "tokenize.h"
#include "token.h"
#include <vector>
#include <string>
extern std::ostringstream errout;
class TestValueFlow : public TestFixture {
public:
TestValueFlow() : TestFixture("TestValueFlow") {
}
private:
void run() {
valueFlowBeforeCondition();
}
bool testValueOfX(const char code[], unsigned int linenr, int value) {
Settings settings;
settings.valueFlow = true; // temporary flag
// Tokenize..
Tokenizer tokenizer(&settings, this);
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
for (const Token *tok = tokenizer.tokens(); tok; tok = tok->next()) {
if (tok->str() == "x" && tok->linenr() == linenr) {
std::list<ValueFlow::Value>::const_iterator it;
for (it = tok->values.begin(); it != tok->values.end(); ++it) {
if (it->intvalue == value)
return true;
}
return false;
}
}
return false;
}
void valueFlowBeforeCondition() {
const char code[] = "void f(int x) {\n"
" int a = x;\n"
" if (x == 123) {}\n"
"}";
ASSERT_EQUALS(true, testValueOfX(code, 2U, 123));
}
};
REGISTER_TEST(TestValueFlow)