151 lines
3.8 KiB
C++
151 lines
3.8 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2010 Daniel Marjamäki and Cppcheck team.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "tokenize.h"
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#include "checkother.h"
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#include "testsuite.h"
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#include <sstream>
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extern std::ostringstream errout;
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class TestCharVar : public TestFixture
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{
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public:
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TestCharVar() : TestFixture("TestCharVar")
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{ }
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private:
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void run()
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{
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TEST_CASE(array_index);
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TEST_CASE(bitop1);
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TEST_CASE(bitop2);
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TEST_CASE(return1);
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TEST_CASE(assignChar);
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TEST_CASE(and03);
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}
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void check(const char code[])
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{
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// Tokenize..
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Tokenizer tokenizer;
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std::istringstream istr(code);
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tokenizer.tokenize(istr, "test.cpp");
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tokenizer.setVarId();
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// Clear the error buffer..
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errout.str("");
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// Check char variable usage..
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Settings settings;
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settings._checkCodingStyle = true;
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CheckOther checkOther(&tokenizer, &settings, this);
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checkOther.checkCharVariable();
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}
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void array_index()
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{
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check("void foo()\n"
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"{\n"
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" unsigned char ch = 0x80;\n"
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" buf[ch] = 0;\n"
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"}\n");
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ASSERT_EQUALS("", errout.str());
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check("void foo()\n"
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"{\n"
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" char ch = 0x80;\n"
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" buf[ch] = 0;\n"
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"}\n");
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ASSERT_EQUALS("[test.cpp:4]: (style) Warning - using char variable as array index\n", errout.str());
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check("void foo()\n"
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"{\n"
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" signed char ch = 0x80;\n"
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" buf[ch] = 0;\n"
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"}\n");
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ASSERT_EQUALS("[test.cpp:4]: (style) Warning - using char variable as array index\n", errout.str());
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check("void foo(char ch)\n"
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"{\n"
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" buf[ch] = 0;\n"
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"}\n");
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ASSERT_EQUALS("[test.cpp:3]: (style) Warning - using char variable as array index\n", errout.str());
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}
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void bitop1()
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{
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check("void foo()\n"
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"{\n"
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" int result = 0;\n"
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" char ch;\n"
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" result = a | ch;\n"
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"}\n");
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ASSERT_EQUALS("[test.cpp:4]: (style) Warning - using char variable in bit operation\n", errout.str());
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}
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void bitop2()
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{
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check("void foo()\n"
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"{\n"
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" char ch;\n"
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" func(&ch);\n"
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"}\n");
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ASSERT_EQUALS("", errout.str());
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}
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void return1()
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{
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check("void foo()\n"
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"{\n"
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" char c;\n"
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" return &c;\n"
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"}\n");
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ASSERT_EQUALS("", errout.str());
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}
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void assignChar()
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{
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check("void foo()\n"
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"{\n"
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" char c;\n"
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" c = c & 0x123;\n"
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"}\n");
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ASSERT_EQUALS("", errout.str());
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}
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void and03()
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{
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check("void foo()\n"
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"{\n"
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" char c;\n"
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" int i = c & 0x03;\n"
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"}\n");
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ASSERT_EQUALS("", errout.str());
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}
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};
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REGISTER_TEST(TestCharVar)
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