esp-idf/components/cxx/test_apps/rtti/main/test_rtti.cpp

131 lines
3.1 KiB
C++

/*
* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdexcept>
#include <typeinfo>
#include "unity.h"
#include "unity_test_utils.h"
/* Note: When first exception (in system) is thrown this test produces memory leaks report (~300 bytes):
- 8 bytes are allocated by __cxa_get_globals() to keep __cxa_eh_globals
- 16 bytes are allocated by pthread_setspecific() which is called by __cxa_get_globals() to init TLS var for __cxa_eh_globals
- 88 bytes are allocated by pthread_setspecific() to init internal lock
- some more memory...
*/
#if CONFIG_IDF_TARGET_ESP32
#define LEAKS (300)
#elif CONFIG_IDF_TARGET_ESP32S2
#define LEAKS (800)
#elif CONFIG_IDF_TARGET_ESP32C3
#define LEAKS (700)
#else
#error "unknown target in CXX tests, can't set leaks threshold"
#endif
extern "C" void setUp()
{
unity_utils_set_leak_level(0);
unity_utils_record_free_mem();
}
extern "C" void tearDown()
{
unity_utils_evaluate_leaks();
}
using namespace std;
class Base {
public:
virtual ~Base() {} ;
virtual char name() = 0;
};
class DerivedA : public Base {
public:
char name() override
{
return 'A';
}
};
class DerivedB : public Base {
public:
char name() override
{
return 'B';
}
};
TEST_CASE("unsuccessful dynamic cast on pointer returns nullptr", "[cxx]")
{
Base *base = new DerivedA();
DerivedB *derived = dynamic_cast<DerivedB*>(base);
TEST_ASSERT_EQUAL(derived, nullptr);
delete base;
derived = nullptr;
}
TEST_CASE("dynamic cast works", "[cxx]")
{
Base *base = new DerivedA();
DerivedA *derived = dynamic_cast<DerivedA*>(base);
TEST_ASSERT_EQUAL(derived, base);
delete base;
}
TEST_CASE("typeid of dynamic objects works", "[cxx]")
{
Base *base = new DerivedA();
DerivedA *derived = dynamic_cast<DerivedA*>(base);
TEST_ASSERT_EQUAL(typeid(*derived).hash_code(), typeid(*base).hash_code());
TEST_ASSERT_EQUAL(typeid(*derived).hash_code(), typeid(DerivedA).hash_code());
delete base;
derived = nullptr;
}
int dummy_function1(int arg1, double arg2);
int dummy_function2(int arg1, double arg2);
TEST_CASE("typeid of function works", "[cxx]")
{
TEST_ASSERT_EQUAL(typeid(dummy_function1).hash_code(), typeid(dummy_function2).hash_code());
}
TEST_CASE("unsuccessful dynamic cast on reference throws exception", "[cxx]")
{
unity_utils_set_leak_level(LEAKS);
bool thrown = false;
DerivedA derived_a;
Base &base = derived_a;
try {
DerivedB &derived_b = dynamic_cast<DerivedB&>(base);
derived_b.name(); // suppress warning
} catch (bad_cast &e) {
thrown = true;
}
TEST_ASSERT(thrown);
}
TEST_CASE("typeid on nullptr throws bad_typeid", "[cxx]")
{
Base *base = nullptr;
size_t hash = 0;
bool thrown = false;
try {
hash = typeid(*base).hash_code();
} catch (bad_typeid &e) {
thrown = true;
}
TEST_ASSERT_EQUAL(0, hash);
TEST_ASSERT(thrown);
}
extern "C" void app_main(void)
{
printf("CXX RTTI TEST\n");
unity_run_menu();
}