testincompletestatement.cpp

cppcheck is a static C/C++ code analyzer that checks for memory leaks, mismatching allocation-deallo

/*
 * Cppcheck - A tool for static C/C++ code analysis
 * Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam,
 * Leandro Penz, Kimmo Varis, Vesa Pikki
 *
 * 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 unused variables..


#include "testsuite.h"
#include "../src/tokenize.h"
#include "../src/checkother.h"

#include <sstream>

extern std::ostringstream errout;

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

private:
    void check(const char code[])
    {
        // Tokenize..
        Tokenizer tokenizer;
        std::istringstream istr(code);
        tokenizer.tokenize(istr, "test.cpp");
        tokenizer.simplifyTokenList();

        // Clear the error buffer..
        errout.str("");

        Settings settings;
        settings._showAll = true;

        // Check for unused variables..
        CheckOther checkOther(&tokenizer, settings, this);
        checkOther.CheckIncompleteStatement();
    }

    void run()
    {
        TEST_CASE(test1);
        TEST_CASE(test2);
        TEST_CASE(test3);
        TEST_CASE(test4);
        TEST_CASE(test5);
        TEST_CASE(test_numeric);
        TEST_CASE(intarray);
        TEST_CASE(structarraynull);
        TEST_CASE(structarray);
    }

    void test1()
    {
        check("void foo()\n"
              "{\n"
              "    const char def[] =\n"
              "#ifdef ABC\n"
              "    \"abc\";\n"
              "#else\n"
              "    \"not abc\";\n"
              "#endif\n"
              "}\n");

        ASSERT_EQUALS(std::string(""), errout.str());
    }

    void test2()
    {
        check("void foo()\n"
              "{\n"
              "    \"abc\";\n"
              "}\n");

        ASSERT_EQUALS(std::string("[test.cpp:3]: (style) Redundant code: Found a statement that begins with string constant\n"), errout.str());
    }

    void test3()
    {
        check("void foo()\n"
              "{\n"
              "    const char *str[] = { \"abc\" };\n"
              "}\n");

        ASSERT_EQUALS(std::string(""), errout.str());
    }

    void test4()
    {
        check("void foo()\n"
              "{\n"
              "const char *a =\n"
              "{\n"
              "\"hello \"\n"
              "\"more \"\n"
              "\"world\"\n"
              "};\n"
              "}\n");

        ASSERT_EQUALS(std::string(""), errout.str());
    }

    void test5()
    {
        check("void foo()\n"
              "{\n"
              "    50;\n"
              "}\n");

        ASSERT_EQUALS(std::string("[test.cpp:3]: (style) Redundant code: Found a statement that begins with numeric constant\n"), errout.str());
    }

    void test_numeric()
    {
        check("struct P\n"
              "{\n"
              "double a;\n"
              "double b;\n"
              "};\n"
              "void f()\n"
              "{\n"
              "const P values[2] =\n"
              "{\n"
              "{ 346.1,114.1 }, { 347.1,111.1 }\n"
              "};\n"
              "}\n"
              "};\n");

        ASSERT_EQUALS(std::string(""), errout.str());
    }

    void intarray()
    {
        check("int arr[] = { 100/2, 1*100 };\n");
        ASSERT_EQUALS(std::string(""), errout.str());
    }

    void structarraynull()
    {
        check("struct st arr[] = {\n"
              "    { 100/2, 1*100 }\n"
              "    { 90, 70 }\n"
              "}\n");
        ASSERT_EQUALS(std::string(""), errout.str());
    }

    void structarray()
    {
        check("struct st arr[] = {\n"
              "    { 100/2, 1*100 }\n"
              "    { 90, 70 }\n"
              "};\n");
        ASSERT_EQUALS(std::string(""), errout.str());
    }

};

REGISTER_TEST(TestIncompleteStatement)