/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam,
* Leandro Penz, Kimmo Varis
*
* 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 "../src/tokenize.h"
#include "../src/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
TEST_CASE(uninitVar1);
TEST_CASE(uninitVarEnum);
TEST_CASE(uninitVarStream);
TEST_CASE(privateCtor1); // If constructor is private..
// TODO TEST_CASE(privateCtor2); // If constructor is private..
TEST_CASE(function); // Function is not variable
TEST_CASE(uninitVarHeader1); // Class is defined in header
TEST_CASE(uninitVarHeader2); // Class is defined in header
}
// 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]: (error) Class Base which is inherited by class Derived does not 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]: (error) Class Base which is inherited by class Derived does not have a virtual destructor\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]: (error) Class Base which is inherited by class Derived does not have a virtual destructor\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());
}
void checkUninitVar(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.constructors();
}
void uninitVar1()
{
checkUninitVar("enum ECODES\n"
"{\n"
" CODE_1 = 0,\n"
" CODE_2 = 1\n"
"};\n"
"\n"
"class Fred\n"
"{\n"
"public:\n"
" Fred() {}\n"
"\n"
"private:\n"
" ECODES _code;\n"
"};\n");
ASSERT_EQUALS("[test.cpp:10]: (style) Member variable not initialized in the constructor 'Fred::_code'\n", errout.str());
}
void uninitVarEnum()
{
checkUninitVar("class Fred\n"
"{\n"
"public:\n"
" enum abc {a,b,c};\n"
" Fred() {}\n"
"private:\n"
" unsigned int i;\n"
"};\n");
ASSERT_EQUALS("[test.cpp:5]: (style) Member variable not initialized in the constructor 'Fred::i'\n", errout.str());
}
void uninitVarStream()
{
checkUninitVar("#include <fstream>\n"
"class Foo\n"
"{\n"
"private:\n"
" int foo;\n"
"public:\n"
" Foo(std::istream &in)\n"
" {\n"
" if(!(in >> foo))\n"
" throw 0;\n"
" }\n"
"};\n");
ASSERT_EQUALS(std::string(""), errout.str());
}
void privateCtor1()
{
checkUninitVar("class Foo {\n"
" int foo;\n"
" Foo() { }\n"
"};\n");
ASSERT_EQUALS(std::string(""), errout.str());
}
void privateCtor2()
{
checkUninitVar("class Foo\n"
"{\n"
"private:\n"
" int foo;\n"
" Foo() { }\n"
"public:\n"
" Foo(int _i) { }\n"
"};\n");
ASSERT_EQUALS(std::string("[test.cpp:7] (style) Member variable not initialized in the constructor Foo::foo"), errout.str());
}
void function()
{
checkUninitVar("class A\n"
"{\n"
"public:\n"
" A();\n"
" int* f(int*);\n"
"};\n"
"\n"
"A::A()\n"
"{\n"
"}\n"
"\n"
"int* A::f(int* p)\n"
"{\n"
" return p;\n"
"}\n");
ASSERT_EQUALS(std::string(""), errout.str());
}
void uninitVarHeader1()
{
checkUninitVar("#file \"fred.h\"\n"
"class Fred\n"
"{\n"
"private:\n"
" unsigned int i;\n"
"public:\n"
" Fred();\n"
"};\n"
"#endfile\n");
ASSERT_EQUALS("", errout.str());
}
void uninitVarHeader2()
{
checkUninitVar("#file \"fred.h\"\n"
"class Fred\n"
"{\n"
"private:\n"
" unsigned int i;\n"
"public:\n"
" Fred() { }\n"
"};\n"
"#endfile\n");
ASSERT_EQUALS("[fred.h:6]: (style) Member variable not initialized in the constructor 'Fred::i'\n", errout.str());
}
};
REGISTER_TEST(TestClass)