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/**
* TUT unit testing framework.
* http://tut-framework.sourceforge.net/
*
* Copyright 2002-2006 Vladimir Dyuzhev.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// Slightly modified for use in this software package.
#ifndef TUT_H_GUARD
#define TUT_H_GUARD
#include <iostream>
#include <map>
#include <vector>
#include <string>
#include <sstream>
#include <typeinfo>
#if defined(TUT_USE_SEH)
#include <windows.h>
#include <winbase.h>
#endif
#ifdef __SOLARIS9__
// Solaris 9 only has putenv, not setenv.
static int setenv(const char *name, const char *value, int override) {
int ret;
char *s = (char*)malloc(strlen(name) + strlen(value) + 2);
s[0] = 0;
strcpy(s, name);
strcpy(s, "=");
strcpy(s, value);
ret = putenv(s);
free(s);
return ret;
}
#endif
#define DEFINE_TEST_GROUP(name) \
using namespace tut; \
typedef test_group<name> factory; \
typedef factory::object object; \
factory name## _group(#name)
#define DEFINE_TEST_GROUP_WITH_LIMIT(name, limit) \
using namespace tut; \
typedef test_group<name, limit> factory; \
typedef factory::object object; \
factory name## _group(#name)
#define TEST_METHOD(i) \
template<> template<> \
void object::test<i>()
#ifdef __GNUC__
#define TUT_UNUSED __attribute__((unused))
#else
#define TUT_UNUSED
#endif
/**
* Template Unit Tests Framework for C++.
* http://tut.dozen.ru
*
* @author Vladimir Dyuzhev, Vladimir.Dyuzhev@gmail.com
*/
namespace tut
{
/**
* The base for all TUT exceptions.
*/
struct tut_error : public std::exception
{
tut_error(const std::string& msg)
: err_msg(msg)
{
}
~tut_error() throw()
{
}
const char* what() const throw()
{
return err_msg.c_str();
}
private:
std::string err_msg;
};
/**
* Exception to be throwed when attempted to execute
* missed test by number.
*/
struct no_such_test : public tut_error
{
no_such_test()
: tut_error("no such test")
{
}
~no_such_test() throw()
{
}
};
/**
* No such test and passed test number is higher than
* any test number in current group. Used in one-by-one
* test running when upper bound is not known.
*/
struct beyond_last_test : public no_such_test
{
beyond_last_test()
{
}
~beyond_last_test() throw()
{
}
};
/**
* Group not found exception.
*/
struct no_such_group : public tut_error
{
no_such_group(const std::string& grp)
: tut_error(grp)
{
}
~no_such_group() throw()
{
}
};
/**
* Internal exception to be throwed when
* no more tests left in group or journal.
*/
struct no_more_tests
{
no_more_tests()
{
}
~no_more_tests() throw()
{
}
};
/**
* Internal exception to be throwed when
* test constructor has failed.
*/
struct bad_ctor : public tut_error
{
bad_ctor(const std::string& msg)
: tut_error(msg)
{
}
~bad_ctor() throw()
{
}
};
/**
* Exception to be throwed when ensure() fails or fail() called.
*/
struct failure : public tut_error
{
failure(const std::string& msg)
: tut_error(msg)
{
}
~failure() throw()
{
}
};
/**
* Exception to be throwed when test desctructor throwed an exception.
*/
struct warning : public tut_error
{
warning(const std::string& msg)
: tut_error(msg)
{
}
~warning() throw()
{
}
};
/**
* Exception to be throwed when test issued SEH (Win32)
*/
struct seh : public tut_error
{
seh(const std::string& msg)
: tut_error(msg)
{
}
~seh() throw()
{
}
};
/**
* Return type of runned test/test group.
*
* For test: contains result of test and, possible, message
* for failure or exception.
*/
struct test_result
{
/**
* Test group name.
*/
std::string group;
/**
* Test number in group.
*/
int test;
/**
* Test name (optional)
*/
std::string name;
/**
* ok - test finished successfully
* fail - test failed with ensure() or fail() methods
* ex - test throwed an exceptions
* warn - test finished successfully, but test destructor throwed
* term - test forced test application to terminate abnormally
*/
enum result_type
{
ok,
fail,
ex,
warn,
term,
ex_ctor
};
result_type result;
/**
* Exception message for failed test.
*/
std::string message;
std::string exception_typeid;
/**
* Default constructor.
*/
test_result()
: test(0),
result(ok)
{
}
/**
* Constructor.
*/
test_result(const std::string& grp, int pos,
const std::string& test_name, result_type res)
: group(grp),
test(pos),
name(test_name),
result(res)
{
}
/**
* Constructor with exception.
*/
test_result(const std::string& grp,int pos,
const std::string& test_name, result_type res,
const std::exception& ex)
: group(grp),
test(pos),
name(test_name),
result(res),
message(ex.what()),
exception_typeid(typeid(ex).name())
{
}
};
/**
* Interface.
* Test group operations.
*/
struct group_base
{
virtual ~group_base()
{
}
// execute tests iteratively
virtual void rewind() = 0;
virtual test_result run_next() = 0;
// execute one test
virtual test_result run_test(int n) = 0;
};
/**
* Test runner callback interface.
* Can be implemented by caller to update
* tests results in real-time. User can implement
* any of callback methods, and leave unused
* in default implementation.
*/
struct callback
{
/**
* Virtual destructor is a must for subclassed types.
*/
virtual ~callback()
{
}
/**
* Called when new test run started.
*/
virtual void run_started()
{
}
/**
* Called when a group started
* @param name Name of the group
*/
virtual void group_started(const std::string& /*name*/)
{
}
/**
* Called when a test started (which may turn out not to exist).
* @param n Test number.
*/
virtual void test_started(int /*n*/)
{
}
/**
* Called when a test finished.
* @param tr Test results.
*/
virtual void test_completed(const test_result& /*tr*/)
{
}
/**
* Called when a test turns out not to exist.
* @param n Test number.
*/
virtual void test_nonexistant(int /*n*/)
{
}
/**
* Called when a group is completed
* @param name Name of the group
*/
virtual void group_completed(const std::string& /*name*/)
{
}
/**
* Called when all tests in run completed.
*/
virtual void run_completed()
{
}
};
/**
* Typedef for runner::list_groups()
*/
typedef std::vector<std::string> groupnames;
/**
* Test runner.
*/
class test_runner
{
public:
/**
* Constructor
*/
test_runner()
: callback_(&default_callback_)
{
}
/**
* Stores another group for getting by name.
*/
void register_group(const std::string& name, group_base* gr)
{
if (gr == 0)
{
throw tut_error("group shall be non-null");
}
// TODO: inline variable
groups::iterator found = groups_.find(name);
if (found != groups_.end())
{
std::string msg("attempt to add already existent group " + name);
// this exception terminates application so we use cerr also
// TODO: should this message appear in stream?
std::cerr << msg << std::endl;
throw tut_error(msg);
}
groups_[name] = gr;
}
/**
* Stores callback object.
*/
void set_callback(callback* cb)
{
callback_ = cb == 0 ? &default_callback_ : cb;
}
/**
* Returns callback object.
*/
callback& get_callback() const
{
return *callback_;
}
/**
* Returns list of known test groups.
*/
const groupnames list_groups() const
{
groupnames ret;
const_iterator i = groups_.begin();
const_iterator e = groups_.end();
while (i != e)
{
ret.push_back(i->first);
++i;
}
return ret;
}
/**
* Runs all tests in all groups.
* @param callback Callback object if exists; null otherwise
*/
void run_tests() const
{
callback_->run_started();
const_iterator i = groups_.begin();
const_iterator e = groups_.end();
while (i != e)
{
callback_->group_started(i->first);
try
{
run_all_tests_in_group_(i);
}
catch (const no_more_tests&)
{
callback_->group_completed(i->first);
}
++i;
}
callback_->run_completed();
}
/**
* Runs all tests in specified group.
*/
void run_tests(const std::string& group_name) const
{
callback_->run_started();
const_iterator i = groups_.find(group_name);
if (i == groups_.end())
{
callback_->run_completed();
throw no_such_group(group_name);
}
callback_->group_started(group_name);
try
{
run_all_tests_in_group_(i);
}
catch (const no_more_tests&)
{
// ok
}
callback_->group_completed(group_name);
callback_->run_completed();
}
/**
* Runs one test in specified group.
*/
test_result run_test(const std::string& group_name, int n) const
{
callback_->run_started();
const_iterator i = groups_.find(group_name);
if (i == groups_.end())
{
callback_->run_completed();
throw no_such_group(group_name);
}
callback_->group_started(group_name);
try
{
test_result tr = i->second->run_test(n);
callback_->test_completed(tr);
callback_->group_completed(group_name);
callback_->run_completed();
return tr;
}
catch (const beyond_last_test&)
{
callback_->group_completed(group_name);
callback_->run_completed();
throw;
}
catch (const no_such_test&)
{
callback_->group_completed(group_name);
callback_->run_completed();
throw;
}
}
/**
* Runs specified tests in specified groups.
*/
void run_tests(const std::map< std::string, std::vector<int> >& groups_and_tests) const
{
callback_->run_started();
std::map< std::string, std::vector<int> >::const_iterator g_it;
for (g_it = groups_and_tests.begin(); g_it != groups_and_tests.end(); g_it++)
{
const std::string &group_name = g_it->first;
const std::vector<int> &test_numbers = g_it->second;
const_iterator i = groups_.find(group_name);
if (i == groups_.end())
{
callback_->run_completed();
throw no_such_group(group_name);
}
callback_->group_started(group_name);
try
{
if (test_numbers.empty())
{
run_all_tests_in_group_(i);
}
else
{
std::vector<int>::const_iterator n_it;
for (n_it = test_numbers.begin(); n_it != test_numbers.end(); n_it++)
{
int n = *n_it;
test_result tr = i->second->run_test(n);
callback_->test_completed(tr);
}
}
}
catch (const no_more_tests&)
{
// ok
}
catch (const beyond_last_test&)
{
callback_->group_completed(group_name);
callback_->run_completed();
throw;
}
catch (const no_such_test&)
{
callback_->group_completed(group_name);
callback_->run_completed();
throw;
}
callback_->group_completed(group_name);
}
callback_->run_completed();
}
protected:
typedef std::map<std::string, group_base*> groups;
typedef groups::iterator iterator;
typedef groups::const_iterator const_iterator;
groups groups_;
callback default_callback_;
callback* callback_;
private:
void run_all_tests_in_group_(const_iterator i) const
{
i->second->rewind();
for ( ;; )
{
test_result tr = i->second->run_next();
callback_->test_completed(tr);
if (tr.result == test_result::ex_ctor)
{
throw no_more_tests();
}
}
}
};
/**
* Singleton for test_runner implementation.
* Instance with name runner_singleton shall be implemented
* by user.
*/
class test_runner_singleton
{
public:
static test_runner& get()
{
static test_runner tr;
return tr;
}
};
extern test_runner_singleton runner;
/**
* Test object. Contains data test run upon and default test method
* implementation. Inherited from Data to allow tests to
* access test data as members.
*/
template <class Data>
class test_object : public Data
{
public:
/**
* Default constructor
*/
test_object()
{
}
void set_test_name(const std::string& current_test_name)
{
current_test_name_ = current_test_name;
}
const std::string& get_test_name() const
{
return current_test_name_;
}
/**
* Default do-nothing test.
*/
template <int n>
void test()
{
called_method_was_a_dummy_test_ = true;
}
/**
* The flag is set to true by default (dummy) test.
* Used to detect usused test numbers and avoid unnecessary
* test object creation which may be time-consuming depending
* on operations described in Data::Data() and Data::~Data().
* TODO: replace with throwing special exception from default test.
*/
bool called_method_was_a_dummy_test_;
private:
std::string current_test_name_;
};
namespace
{
/**
* Tests provided condition.
* Throws if false.
*/
TUT_UNUSED void ensure(bool cond)
{
if (!cond)
{
// TODO: default ctor?
throw failure("");
}
}
/**
* Tests provided condition.
* Throws if true.
*/
TUT_UNUSED void ensure_not(bool cond)
{
ensure(!cond);
}
/**
* Tests provided condition.
* Throws if false.
*/
template <typename T>
void ensure(const T msg, bool cond)
{
if (!cond)
{
throw failure(msg);
}
}
/**
* Tests provided condition.
* Throws if true.
*/
template <typename T>
void ensure_not(const T msg, bool cond)
{
ensure(msg, !cond);
}
/**
* Tests two objects for being equal.
* Throws if false.
*
* NB: both T and Q must have operator << defined somewhere, or
* client code will not compile at all!
*/
template <class T, class Q>
void ensure_equals(const char* msg, const Q& actual, const T& expected)
{
if (expected != actual)
{
std::stringstream ss;
ss << (msg ? msg : "")
<< (msg ? ":" : "")
<< " expected '"
<< expected
<< "' actual '"
<< actual
<< '\'';
throw failure(ss.str().c_str());
}
}
template <class T, class Q>
void ensure_equals(const Q& actual, const T& expected)
{
ensure_equals<>(0, actual, expected);
}
/**
* Tests two objects for being at most in given distance one from another.
* Borders are excluded.
* Throws if false.
*
* NB: T must have operator << defined somewhere, or
* client code will not compile at all! Also, T shall have
* operators + and -, and be comparable.
*/
template <class T>
void ensure_distance(const char* msg, const T& actual, const T& expected,
const T& distance)
{
if (expected-distance >= actual || expected+distance <= actual)
{
std::stringstream ss;
ss << (msg ? msg : "")
<< (msg? ":" : "")
<< " expected ("
<< expected-distance
<< " - "
<< expected+distance
<< ") actual '"
<< actual
<< '\'';
throw failure(ss.str().c_str());
}
}
template <class T>
void ensure_distance(const T& actual, const T& expected, const T& distance)
{
ensure_distance<>(0, actual, expected, distance);
}
/**
* Unconditionally fails with message.
*/
TUT_UNUSED void fail(const char* msg = "")
{
throw failure(msg);
}
} // end of namespace
/**
* Walks through test tree and stores address of each
* test method in group. Instantiation stops at 0.
*/
template <class Test, class Group, int n>
struct tests_registerer
{
static void reg(Group& group)
{
group.reg(n, &Test::template test<n>);
tests_registerer<Test, Group, n - 1>::reg(group);
}
};
template <class Test, class Group>
struct tests_registerer<Test, Group, 0>
{
static void reg(Group&)
{
}
};
/**
* Test group; used to recreate test object instance for
* each new test since we have to have reinitialized
* Data base class.
*/
template <class Data, int MaxTestsInGroup = 50>
class test_group : public group_base
{
const char* name_;
typedef void (test_object<Data>::*testmethod)();
typedef std::map<int, testmethod> tests;
typedef typename tests::iterator tests_iterator;
typedef typename tests::const_iterator tests_const_iterator;
typedef typename tests::const_reverse_iterator
tests_const_reverse_iterator;
typedef typename tests::size_type size_type;
tests tests_;
tests_iterator current_test_;
/**
* Exception-in-destructor-safe smart-pointer class.
*/
template <class T>
class safe_holder
{
T* p_;
bool permit_throw_in_dtor;
safe_holder(const safe_holder&);
safe_holder& operator=(const safe_holder&);
public:
safe_holder()
: p_(0),
permit_throw_in_dtor(false)
{
}
~safe_holder()
{
release();
}
T* operator->() const
{
return p_;
}
T* get() const
{
return p_;
}
/**
* Tell ptr it can throw from destructor. Right way is to
* use std::uncaught_exception(), but some compilers lack
* correct implementation of the function.
*/
void permit_throw()
{
permit_throw_in_dtor = true;
}
/**
* Specially treats exceptions in test object destructor;
* if test itself failed, exceptions in destructor
* are ignored; if test was successful and destructor failed,
* warning exception throwed.
*/
void release()
{
try
{
if (delete_obj() == false)
{
throw warning("destructor of test object raised"
" an SEH exception");
}
}
catch (const std::exception& ex)
{
if (permit_throw_in_dtor)
{
std::string msg = "destructor of test object raised"
" exception: ";
msg += ex.what();
throw warning(msg);
}
}
catch( ... )
{
if (permit_throw_in_dtor)
{
throw warning("destructor of test object raised an"
" exception");
}
}
}
/**
* Re-init holder to get brand new object.
*/
void reset()
{
release();
permit_throw_in_dtor = false;
p_ = new T();
}
bool delete_obj()
{
#if defined(TUT_USE_SEH)
__try
{
#endif
T* p = p_;
p_ = 0;
delete p;
#if defined(TUT_USE_SEH)
}
__except(handle_seh_(::GetExceptionCode()))
{
if (permit_throw_in_dtor)
{
return false;
}
}
#endif
return true;
}
};
public:
typedef test_object<Data> object;
/**
* Creates and registers test group with specified name.
*/
test_group(const char* name)
: name_(name)
{
// register itself
runner.get().register_group(name_,this);
// register all tests
tests_registerer<object, test_group, MaxTestsInGroup>::reg(*this);
}
/**
* This constructor is used in self-test run only.
*/
test_group(const char* name, test_runner& another_runner)
: name_(name)
{
// register itself
another_runner.register_group(name_, this);
// register all tests
tests_registerer<test_object<Data>, test_group,
MaxTestsInGroup>::reg(*this);
};
/**
* Registers test method under given number.
*/
void reg(int n, testmethod tm)
{
tests_[n] = tm;
}
/**
* Reset test position before first test.
*/
void rewind()
{
current_test_ = tests_.begin();
}
/**
* Runs next test.
*/
test_result run_next()
{
if (current_test_ == tests_.end())
{
throw no_more_tests();
}
// find next user-specialized test
safe_holder<object> obj;
while (current_test_ != tests_.end())
{
try
{
return run_test_(current_test_++, obj);
}
catch (const no_such_test&)
{
continue;
}
}
throw no_more_tests();
}
/**
* Runs one test by position.
*/
test_result run_test(int n)
{
// beyond tests is special case to discover upper limit
if (tests_.rbegin() == tests_.rend())
{
throw beyond_last_test();
}
if (tests_.rbegin()->first < n)
{
throw beyond_last_test();
}
// withing scope; check if given test exists
tests_iterator ti = tests_.find(n);
if (ti == tests_.end())
{
throw no_such_test();
}
safe_holder<object> obj;
return run_test_(ti, obj);
}
private:
/**
* VC allows only one exception handling type per function,
* so I have to split the method.
*
* TODO: refactoring needed!
*/
test_result run_test_(const tests_iterator& ti, safe_holder<object>& obj)
{
std::string current_test_name;
int number = ti->first; // In a variable so we can easily inspect with gdb.
runner.get().get_callback().test_started(number);
try
{
if (run_test_seh_(ti->second,obj, current_test_name) == false)
{
throw seh("seh");
}
}
catch (const no_such_test&)
{
runner.get().get_callback().test_nonexistant(number);
throw;
}
catch (const warning& ex)
{
// test ok, but destructor failed
if (obj.get())
{
current_test_name = obj->get_test_name();
}
test_result tr(name_,ti->first, current_test_name,
test_result::warn, ex);
return tr;
}
catch (const failure& ex)
{
// test failed because of ensure() or similar method
if (obj.get())
{
current_test_name = obj->get_test_name();
}
test_result tr(name_,ti->first, current_test_name,
test_result::fail, ex);
return tr;
}
catch (const seh& ex)
{
// test failed with sigsegv, divide by zero, etc
if (obj.get())
{
current_test_name = obj->get_test_name();
}
test_result tr(name_, ti->first, current_test_name,
test_result::term, ex);
return tr;
}
catch (const bad_ctor& ex)
{
// test failed because test ctor failed; stop the whole group
if (obj.get())
{
current_test_name = obj->get_test_name();
}
test_result tr(name_, ti->first, current_test_name,
test_result::ex_ctor, ex);
return tr;
}
/*
catch (const std::exception& ex)
{
// test failed with std::exception
if (obj.get())
{
current_test_name = obj->get_test_name();
}
test_result tr(name_, ti->first, current_test_name,
test_result::ex, ex);
return tr;
}
catch (...)
{
// test failed with unknown exception
if (obj.get())
{
current_test_name = obj->get_test_name();
}
test_result tr(name_, ti->first, current_test_name,
test_result::ex);
return tr;
}
*/
// test passed
test_result tr(name_,number, current_test_name, test_result::ok);
return tr;
}
/**
* Runs one under SEH if platform supports it.
*/
bool run_test_seh_(testmethod tm, safe_holder<object>& obj,
std::string& current_test_name)
{
#if defined(TUT_USE_SEH)
__try
{
#endif
if (obj.get() == 0)
{
reset_holder_(obj);
}
obj->called_method_was_a_dummy_test_ = false;
#if defined(TUT_USE_SEH)
__try
{
#endif
(obj.get()->*tm)();
#if defined(TUT_USE_SEH)
}
__except(handle_seh_(::GetExceptionCode()))
{
// throw seh("SEH");
current_test_name = obj->get_test_name();
return false;
}
#endif
if (obj->called_method_was_a_dummy_test_)
{
// do not call obj.release(); reuse object
throw no_such_test();
}
current_test_name = obj->get_test_name();
obj.permit_throw();
obj.release();
#if defined(TUT_USE_SEH)
}
__except(handle_seh_(::GetExceptionCode()))
{
return false;
}
#endif
return true;
}
void reset_holder_(safe_holder<object>& obj)
{
try
{
obj.reset();
}
catch (const std::exception& ex)
{
throw bad_ctor(ex.what());
}
catch (...)
{
throw bad_ctor("test constructor has generated an exception;"
" group execution is terminated");
}
}
};
#if defined(TUT_USE_SEH)
/**
* Decides should we execute handler or ignore SE.
*/
inline int handle_seh_(DWORD excode)
{
switch(excode)
{
case EXCEPTION_ACCESS_VIOLATION:
case EXCEPTION_DATATYPE_MISALIGNMENT:
case EXCEPTION_BREAKPOINT:
case EXCEPTION_SINGLE_STEP:
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
case EXCEPTION_FLT_DENORMAL_OPERAND:
case EXCEPTION_FLT_DIVIDE_BY_ZERO:
case EXCEPTION_FLT_INEXACT_RESULT:
case EXCEPTION_FLT_INVALID_OPERATION:
case EXCEPTION_FLT_OVERFLOW:
case EXCEPTION_FLT_STACK_CHECK:
case EXCEPTION_FLT_UNDERFLOW:
case EXCEPTION_INT_DIVIDE_BY_ZERO:
case EXCEPTION_INT_OVERFLOW:
case EXCEPTION_PRIV_INSTRUCTION:
case EXCEPTION_IN_PAGE_ERROR:
case EXCEPTION_ILLEGAL_INSTRUCTION:
case EXCEPTION_NONCONTINUABLE_EXCEPTION:
case EXCEPTION_STACK_OVERFLOW:
case EXCEPTION_INVALID_DISPOSITION:
case EXCEPTION_GUARD_PAGE:
case EXCEPTION_INVALID_HANDLE:
return EXCEPTION_EXECUTE_HANDLER;
};
return EXCEPTION_CONTINUE_SEARCH;
}
#endif
}
#endif
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