cppcheck/test/testtoken.cpp

/*
 * Cppcheck - A tool for static C/C++ code analysis
 * Copyright (C) 2007-2010 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 "tokenize.h"
#include "token.h"

#include <cstring>

extern std::ostringstream errout;
class TestToken : public TestFixture
{
public:
    TestToken() : TestFixture("TestToken")
    { }

private:

    void run()
    {
        TEST_CASE(nextprevious);
        TEST_CASE(multiCompare);
        TEST_CASE(getStrLength);
        TEST_CASE(strValue);

        TEST_CASE(deleteLast);

        TEST_CASE(match1);
        TEST_CASE(match2);
    }

    void nextprevious()
    {
        Token *token = new Token(0);
        token->str("1");
        token->insertToken("2");
        token->next()->insertToken("3");
        Token *last = token->tokAt(2);
        ASSERT_EQUALS(token->str(), "1");
        ASSERT_EQUALS(token->next()->str(), "2");
        ASSERT_EQUALS(token->tokAt(2)->str(), "3");
        if (last->next())
            ASSERT_EQUALS("Null was expected", "");

        ASSERT_EQUALS(last->str(), "3");
        ASSERT_EQUALS(last->previous()->str(), "2");
        ASSERT_EQUALS(last->tokAt(-2)->str(), "1");
        if (token->previous())
            ASSERT_EQUALS("Null was expected", "");

        Tokenizer::deleteTokens(token);
    }

    void multiCompare()
    {
        // Test for found
        ASSERT_EQUALS(1, Token::multiCompare("one|two", "one"));
        ASSERT_EQUALS(1, Token::multiCompare("one|two", "two"));
        ASSERT_EQUALS(1, Token::multiCompare("verybig|two|", "two"));

        // Test for empty string found
        ASSERT_EQUALS(0, Token::multiCompare("|one|two", "notfound"));
        ASSERT_EQUALS(0, Token::multiCompare("one||two", "notfound"));
        ASSERT_EQUALS(0, Token::multiCompare("one|two|", "notfound"));

        // Test for not found
        ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare("one|two", "notfound")));
        ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare("verybig|two", "s")));
        ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare("one|two", "ne")));
        ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare("abc|def", "a")));
        ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare("abc|def", "abcd")));
        ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare("abc|def", "default")));
    }

    void getStrLength()
    {
        Token tok(0);

        tok.str("\"\"");
        ASSERT_EQUALS(0, Token::getStrLength(&tok));

        tok.str("\"test\"");
        ASSERT_EQUALS(4, Token::getStrLength(&tok));

        tok.str("\"test \\\\test\"");
        ASSERT_EQUALS(10, Token::getStrLength(&tok));

        tok.str("\"a\\0\"");
        ASSERT_EQUALS(1, Token::getStrLength(&tok));
    }

    void strValue()
    {
        Token tok(0);
        tok.str("\"\"");
        ASSERT_EQUALS(std::string(""), tok.strValue());

        tok.str("\"0\"");
        ASSERT_EQUALS(std::string("0"), tok.strValue());
    }


    void deleteLast()
    {
        Token *tokensBack = 0;
        Token tok(&tokensBack);
        tok.insertToken("aba");
        ASSERT_EQUALS(true, tokensBack == tok.next());
        tok.deleteNext();
        ASSERT_EQUALS(true, tokensBack == &tok);
    }



    void match1()
    {
        // Match "%var% | %var%"
        {
            const std::string code("abc|def");

            // tokenize..
            Tokenizer tokenizer;
            std::istringstream istr(code);
            tokenizer.tokenize(istr, "test.cpp");

            // Match..
            ASSERT_EQUALS(true, Token::Match(tokenizer.tokens(), "%var% | %var%"));
        }

        // Match "%var% || %var%"
        {
            const std::string code("abc||def");

            // tokenize..
            Tokenizer tokenizer;
            std::istringstream istr(code);
            tokenizer.tokenize(istr, "test.cpp");

            // Match..
            ASSERT_EQUALS(true, Token::Match(tokenizer.tokens(), "%var% || %var%"));
        }
    }

    void match2()
    {
        {
            const std::string code("");

            // tokenize..
            Tokenizer tokenizer;
            std::istringstream istr(code);
            tokenizer.tokenize(istr, "test.cpp");

            // Match..
            ASSERT_EQUALS(true, Token::Match(tokenizer.tokens(), "!!else"));
        }

        {
            const std::string code("");

            // tokenize..
            Tokenizer tokenizer;
            std::istringstream istr(code);
            tokenizer.tokenize(istr, "test.cpp");

            // Match..
            ASSERT_EQUALS(false, Token::Match(tokenizer.tokens(), "!!else something"));
        }

        {
            const std::string code("if ;");

            // tokenize..
            Tokenizer tokenizer;
            std::istringstream istr(code);
            tokenizer.tokenize(istr, "test.cpp");

            // Match..
            ASSERT_EQUALS(true, Token::Match(tokenizer.tokens(), "!!return if"));
        }

        {
            const std::string code("if ;");

            // tokenize..
            Tokenizer tokenizer;
            std::istringstream istr(code);
            tokenizer.tokenize(istr, "test.cpp");

            // Match..
            ASSERT_EQUALS(true, Token::Match(tokenizer.tokens(), "if ; !!else"));
        }

        {
            const std::string code("if ; something");

            // tokenize..
            Tokenizer tokenizer;
            std::istringstream istr(code);
            tokenizer.tokenize(istr, "test.cpp");

            // Match..
            ASSERT_EQUALS(true, Token::Match(tokenizer.tokens(), "if ; !!else"));
        }

        {
            const std::string code("else");

            // tokenize..
            Tokenizer tokenizer;
            std::istringstream istr(code);
            tokenizer.tokenize(istr, "test.cpp");

            // Match..
            ASSERT_EQUALS(false, Token::Match(tokenizer.tokens(), "!!else"));
        }

        {
            const std::string code("if ; else");

            // tokenize..
            Tokenizer tokenizer;
            std::istringstream istr(code);
            tokenizer.tokenize(istr, "test.cpp");

            // Match..
            ASSERT_EQUALS(false, Token::Match(tokenizer.tokens(), "if ; !!else"));
        }
    }
};

REGISTER_TEST(TestToken)