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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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