cppcheck/testclass.cpp

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/*
* cppcheck - c/c++ syntax checking
* Copyright (C) 2007-2008 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam
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*
* 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/
*/
#define UNIT_TESTING
#include "tokenize.h"
#include "checkclass.h"
#include "testsuite.h"
#include <sstream>
extern std::ostringstream errout;
class TestClass : public TestFixture
{
public:
TestClass() : TestFixture("TestClass")
{ }
private:
void run()
{
TEST_CASE( virtualDestructor1 ); // Base class not found => no error
TEST_CASE( virtualDestructor2 ); // Base class doesn't have a destructor
TEST_CASE( virtualDestructor3 ); // Base class has a destructor, but it's not virtual
TEST_CASE( virtualDestructor4 ); // Derived class doesn't have a destructor => no error
TEST_CASE( virtualDestructor5 ); // Derived class has empty destructor => no error
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}
// Check that base classes have virtual destructors
void checkVirtualDestructor(const char code[])
{
// Tokenize..
Tokenizer tokenizer;
std::istringstream istr(code);
tokenizer.tokenize( istr, "test.cpp" );
tokenizer.simplifyTokenList();
// Clear the error log
errout.str("");
// Check..
Settings settings;
CheckClass checkClass( &tokenizer, settings, this );
checkClass.virtualDestructor();
}
void virtualDestructor1()
{
// Base class not found
checkVirtualDestructor("class Derived : public Base { };");
ASSERT_EQUALS( std::string(""), errout.str() );
checkVirtualDestructor("class Derived : Base { };");
ASSERT_EQUALS( std::string(""), errout.str() );
}
void virtualDestructor2()
{
// Base class doesn't have a destructor
checkVirtualDestructor("class Base { };\n"
"class Derived : public Base { public: ~Derived() { (void)11; } };");
ASSERT_EQUALS( std::string("[test.cpp:1]: Base class Base doesn't have a virtual destructor\n"), errout.str() );
checkVirtualDestructor("class Base { };\n"
"class Derived : Base { public: ~Derived() { (void)11; } };");
ASSERT_EQUALS( std::string(""), errout.str() );
}
void virtualDestructor3()
{
// Base class has a destructor, but it's not virtual
checkVirtualDestructor("class Base { public: ~Base(); };\n"
"class Derived : public Base { public: ~Derived() { (void)11; } };");
ASSERT_EQUALS( std::string("[test.cpp:1]: The destructor for the base class Base is not virtual\n"), errout.str() );
checkVirtualDestructor("class Base { public: ~Base(); };\n"
"class Derived : private Fred, public Base { public: ~Derived() { (void)11; } };");
ASSERT_EQUALS( std::string("[test.cpp:1]: The destructor for the base class Base is not virtual\n"), errout.str() );
}
void virtualDestructor4()
{
// Derived class doesn't have a destructor => no error
checkVirtualDestructor("class Base { public: ~Base(); };\n"
"class Derived : public Base { };");
ASSERT_EQUALS( std::string(""), errout.str() );
checkVirtualDestructor("class Base { public: ~Base(); };\n"
"class Derived : private Fred, public Base { };");
ASSERT_EQUALS( std::string(""), errout.str() );
}
void virtualDestructor5()
{
// Derived class has empty destructor => no error
checkVirtualDestructor("class Base { public: ~Base(); };\n"
"class Derived : public Base { public: ~Derived() {} };");
ASSERT_EQUALS( std::string(""), errout.str() );
checkVirtualDestructor("class Base { public: ~Base(); };\n"
"class Derived : public Base { public: ~Derived(); }; Derived::~Derived() {}");
ASSERT_EQUALS( std::string(""), errout.str() );
}
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};
REGISTER_TEST( TestClass )