cppcheck/test/testcppcheck.cpp

/*
 * Cppcheck - A tool for static C/C++ code analysis
 * Copyright (C) 2007-2023 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 "check.h"
#include "color.h"
#include "cppcheck.h"
#include "errorlogger.h"
#include "fixture.h"

#include <algorithm>
#include <functional>
#include <list>
#include <string>


class TestCppcheck : public TestFixture {
public:
    TestCppcheck() : TestFixture("TestCppcheck") {}

private:

    class ErrorLogger2 : public ErrorLogger {
    public:
        std::list<std::string> id;

        void reportOut(const std::string & /*outmsg*/, Color /*c*/ = Color::Reset) override {}

        void reportErr(const ErrorMessage &msg) override {
            id.push_back(msg.id);
        }
    };

    void run() override {
        TEST_CASE(instancesSorted);
        TEST_CASE(classInfoFormat);
        TEST_CASE(getErrorMessages);
    }

    void instancesSorted() const {
        for (std::list<Check *>::const_iterator i = Check::instances().cbegin(); i != Check::instances().cend(); ++i) {
            std::list<Check *>::const_iterator j = i;
            ++j;
            if (j != Check::instances().cend()) {
                ASSERT_EQUALS(true, (*i)->name() < (*j)->name());
            }
        }
    }

    void classInfoFormat() const {
        for (std::list<Check *>::const_iterator i = Check::instances().cbegin(); i != Check::instances().cend(); ++i) {
            const std::string info = (*i)->classInfo();
            if (!info.empty()) {
                ASSERT('\n' != info[0]);         // No \n in the beginning
                ASSERT('\n' == info.back());     // \n at end
                if (info.size() > 1)
                    ASSERT('\n' != info[info.length()-2]); // Only one \n at end
            }
        }
    }

    void getErrorMessages() const {
        ErrorLogger2 errorLogger;
        CppCheck cppCheck(errorLogger, true, nullptr);
        cppCheck.getErrorMessages();
        ASSERT(!errorLogger.id.empty());

        // Check if there are duplicate error ids in errorLogger.id
        std::string duplicate;
        for (std::list<std::string>::const_iterator it = errorLogger.id.cbegin();
             it != errorLogger.id.cend();
             ++it) {
            if (std::find(errorLogger.id.cbegin(), it, *it) != it) {
                duplicate = "Duplicate ID: " + *it;
                break;
            }
        }
        ASSERT_EQUALS("", duplicate);

        // Check for error ids from this class.
        bool foundPurgedConfiguration = false;
        bool foundTooManyConfigs = false;
        for (const std::string & it : errorLogger.id) {
            if (it == "purgedConfiguration")
                foundPurgedConfiguration = true;
            else if (it == "toomanyconfigs")
                foundTooManyConfigs = true;
        }
        ASSERT(foundPurgedConfiguration);
        ASSERT(foundTooManyConfigs);
    }
};

REGISTER_TEST(TestCppcheck)