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unittests: Add C++ constructors test
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tests/unittests/tests-cpp_ctors/Makefile
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tests/unittests/tests-cpp_ctors/Makefile
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include $(RIOTBASE)/Makefile.base
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tests/unittests/tests-cpp_ctors/Makefile.include
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tests/unittests/tests-cpp_ctors/Makefile.include
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FEATURES_REQUIRED += cpp
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tests/unittests/tests-cpp_ctors/README.md
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tests/unittests/tests-cpp_ctors/README.md
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The purpose of this test is to ensure that C++ constructors are executed
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properly during the startup of RIOT. This requires that the port calls
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constructors somewhere during C-library initialization. On newlib ports this is
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done by __libc_init_array(), other ports may need to manually iterate through
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the list of initializer functions (usually .init_array), and call each one in
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order.
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There are three tests:
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- Global constructor
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- Static constructor
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- Local constructor
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The global constructor test checks to see if the constructor of a global object
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has been run during the boot process. The static constructor test does the
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same, but for static object inside a function. The local constructor test checks
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that a locally created object does have its constructor run.
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The local constructor test will only fail if there is a significant problem with
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the C++ tool chain, since it does not rely on any external C++ support code.
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tests/unittests/tests-cpp_ctors/tests-cpp_ctors-class.cpp
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tests/unittests/tests-cpp_ctors/tests-cpp_ctors-class.cpp
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/*
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* Copyright (C) 2016-2017 Eistec AB
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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#include "tests-cpp_ctors.h"
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volatile long tests_cpp_ctors_magic1 = 12345;
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volatile long tests_cpp_ctors_magic2 = 11111111;
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void *tests_cpp_ctors_order[8];
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namespace RIOTTestCPP {
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MyClass::MyClass()
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{
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var = tests_cpp_ctors_magic1;
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}
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MyClass::MyClass(long value) : var(value)
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{
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}
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long MyClass::value()
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{
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return var;
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}
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void MyClass::inc()
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{
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++var;
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}
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} /* namespace RIOTTestCPP */
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tests/unittests/tests-cpp_ctors/tests-cpp_ctors-trampoline.c
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tests/unittests/tests-cpp_ctors/tests-cpp_ctors-trampoline.c
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/*
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* Copyright (C) 2016-2017 Eistec AB
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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#include "embUnit.h"
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#include "embUnit/embUnit.h"
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#include "tests-cpp_ctors.h"
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#include "thread.h" /* For thread_getpid() */
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long tests_cpp_ctors_global_value(void);
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long tests_cpp_ctors_static_value(void);
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long tests_cpp_ctors_local_value(long number);
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extern volatile long tests_cpp_ctors_magic1;
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extern volatile long tests_cpp_ctors_magic2;
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extern void *tests_cpp_ctors_order[8];
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static void tests_cpp_global_ctors(void)
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{
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long expected = tests_cpp_ctors_magic1;
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long actual = tests_cpp_ctors_global_value();
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/* Test to ensure that global constructors have executed */
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TEST_ASSERT_EQUAL_INT(expected, actual);
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}
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static void tests_cpp_static_ctors(void)
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{
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for (long i = 1; i < 10; ++i) {
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long expected = tests_cpp_ctors_magic2 + i;
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long actual = tests_cpp_ctors_static_value();
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TEST_ASSERT_EQUAL_INT(expected, actual);
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}
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}
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static void tests_cpp_local_ctors(void)
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{
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/* Test to ensure that local constructors are executed properly */
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long expected = thread_getpid() + 1;
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long actual = tests_cpp_ctors_local_value(thread_getpid());
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TEST_ASSERT_EQUAL_INT(expected, actual);
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}
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Test *tests_cpp_ctors_tests(void)
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{
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EMB_UNIT_TESTFIXTURES(fixtures) {
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new_TestFixture(tests_cpp_local_ctors),
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new_TestFixture(tests_cpp_global_ctors),
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new_TestFixture(tests_cpp_static_ctors),
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};
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EMB_UNIT_TESTCALLER(cpp_tests, NULL, NULL, fixtures);
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return (Test *)&cpp_tests;
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}
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void tests_cpp_ctors(void)
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{
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TESTS_RUN(tests_cpp_ctors_tests());
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}
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tests/unittests/tests-cpp_ctors/tests-cpp_ctors.cpp
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tests/unittests/tests-cpp_ctors/tests-cpp_ctors.cpp
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/*
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* Copyright (C) 2016-2017 Eistec AB
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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#include "tests-cpp_ctors.h"
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using RIOTTestCPP::MyClass;
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MyClass global_obj;
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extern "C" {
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long tests_cpp_ctors_global_value(void);
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long tests_cpp_ctors_static_value(void);
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long tests_cpp_ctors_local_value(long);
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}
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extern volatile long tests_cpp_ctors_magic2;
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long tests_cpp_ctors_local_value(long number) {
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MyClass local_obj(number);
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local_obj.inc();
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return local_obj.value();
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}
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long tests_cpp_ctors_static_value() {
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static MyClass static_obj(tests_cpp_ctors_magic2);
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static_obj.inc();
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return static_obj.value();
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}
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long tests_cpp_ctors_global_value() {
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return global_obj.value();
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}
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tests/unittests/tests-cpp_ctors/tests-cpp_ctors.h
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tests/unittests/tests-cpp_ctors/tests-cpp_ctors.h
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/*
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* Copyright (C) 2016-2017 Eistec AB
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @addtogroup unittests
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* @{
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*
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* @file
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* @brief Unittests for C++ constructors
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*
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* @author Joakim Nohlgård <joakim.nohlgard@eistec.se>
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*/
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#ifndef TESTS_CPP_CTORS_H
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#define TESTS_CPP_CTORS_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief The entry point of this test suite.
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*/
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void tests_cpp(void);
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#ifdef __cplusplus
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}
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#endif
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#ifdef __cplusplus
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namespace RIOTTestCPP {
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/**
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* @brief Simple class used for testing constructor calls
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*/
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class MyClass {
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private:
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volatile long var;
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public:
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MyClass();
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explicit MyClass(long value);
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long value();
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void inc();
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};
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}
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#endif
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#endif /* TESTS_CPP_CTORS_H */
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/** @} */
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