tests/lib/cpp/cxx/src/main.cpp

/*
 * Copyright (c) 2018 Google LLC.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/*
 * This is mainly a parse test that verifies that Zephyr header files
 * compile in C++ mode.
 */

#include <string.h>
#include <zephyr/types.h>
#include <stdbool.h>

#include <zephyr/init.h>
#include <zephyr/device.h>
#include <zephyr/pm/device.h>
#include <zephyr/kernel.h>
#include <zephyr/net_buf.h>
#include <zephyr/sys/crc.h>
#include <zephyr/sys/crc.h>

#include <zephyr/drivers/adc.h>
#include <zephyr/drivers/bbram.h>
#include <zephyr/drivers/cache.h>
#include <zephyr/drivers/can.h>
#include <zephyr/drivers/can/transceiver.h>
#include <zephyr/drivers/clock_control.h>
#include <zephyr/drivers/coredump.h>
#include <zephyr/drivers/counter.h>
#include <zephyr/drivers/dac.h>
#include <zephyr/drivers/dai.h>
#include <zephyr/drivers/disk.h>
#include <zephyr/drivers/display.h>
#include <zephyr/drivers/dma.h>
#include <zephyr/drivers/edac.h>
#include <zephyr/drivers/eeprom.h>
#include <zephyr/drivers/emul.h>
#include <zephyr/drivers/entropy.h>
#include <zephyr/drivers/espi_emul.h>
#include <zephyr/drivers/espi.h>
/* drivers/espi_saf.h requires SoC specific header */
#include <zephyr/drivers/flash.h>
#include <zephyr/drivers/fpga.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/drivers/hwinfo.h>
#include <zephyr/drivers/i2c_emul.h>
#include <zephyr/drivers/i2c.h>
#include <zephyr/drivers/i2s.h>
#include <zephyr/drivers/i3c.h>
#include <zephyr/drivers/ipm.h>
#include <zephyr/drivers/kscan.h>
#include <zephyr/drivers/led.h>
#include <zephyr/drivers/led_strip.h>
#include <zephyr/drivers/lora.h>
#include <zephyr/drivers/mbox.h>
#include <zephyr/drivers/mdio.h>
#include <zephyr/drivers/mipi_dsi.h>
#include <zephyr/drivers/peci.h>
/* drivers/pinctrl.h requires SoC specific header */
#include <zephyr/drivers/pm_cpu_ops.h>
#include <zephyr/drivers/ps2.h>
#include <zephyr/drivers/ptp_clock.h>
#include <zephyr/drivers/pwm.h>
#include <zephyr/drivers/regulator.h>
/* drivers/reset.h conflicts with assert() for certain platforms */
#include <zephyr/drivers/sdhc.h>
#include <zephyr/drivers/sensor.h>
#include <zephyr/drivers/spi_emul.h>
#include <zephyr/drivers/spi.h>
#include <zephyr/drivers/syscon.h>
#include <zephyr/drivers/uart_pipe.h>
#include <zephyr/drivers/uart.h>
#include <zephyr/usb/usb_device.h>
#include <zephyr/usb/class/usb_hid.h>
#include <zephyr/drivers/video-controls.h>
#include <zephyr/drivers/video.h>
#include <zephyr/drivers/watchdog.h>

/* Add RTIO headers to make sure they're CXX compatible */
#include <zephyr/rtio/rtio.h>
#include <zephyr/sys/spsc_lockfree.h>
#include <zephyr/sys/mpsc_lockfree.h>

#include <zephyr/ztest.h>

class foo_class {
public:
	foo_class(int foo) : foo(foo) {}
	int get_foo() const { return foo;}
private:
	int foo;
};

struct foo {
	int v1;
};
/* Check that BUILD_ASSERT compiles. */
BUILD_ASSERT(sizeof(foo) == sizeof(int));

__maybe_unused static struct foo foos[5];
/* Check that ARRAY_SIZE compiles. */
BUILD_ASSERT(ARRAY_SIZE(foos) == 5, "expected 5 elements");

/* Check that SYS_INIT() compiles. */
static int test_init(void)
{
	return 0;
}

SYS_INIT(test_init, APPLICATION, CONFIG_APPLICATION_INIT_PRIORITY);

/* Check that global static object constructors are called. */
foo_class static_foo(12345678);

ZTEST(cxx_tests, test_global_static_ctor)
{
	zassert_equal(static_foo.get_foo(), 12345678);
}

/*
 * Check that dynamic memory allocation (usually, the C library heap) is
 * functional when the global static object constructors are called.
 */
foo_class *static_init_dynamic_foo = new foo_class(87654321);

ZTEST(cxx_tests, test_global_static_ctor_dynmem)
{
	zassert_equal(static_init_dynamic_foo->get_foo(), 87654321);
}

ZTEST(cxx_tests, test_new_delete)
{
	foo_class *test_foo = new foo_class(10);
	zassert_equal(test_foo->get_foo(), 10);
	delete test_foo;
}
ZTEST_SUITE(cxx_tests, NULL, NULL, NULL, NULL, NULL);

/*
 * Unused macros are parsed but not actually compiled. So, even with all their NULL
 * arguments these one-liners add significant C++ coverage. For instance this actually
 * compiles some of the macros in zephyr/device.h in C++.
 *
 * DEVICE_DEFINE(dev_id, name, * init_fn, pm, data, config, level, prio, api)
 */
DEVICE_DT_DEFINE(DT_NODELABEL(test_dev0_boot), NULL, NULL, NULL, NULL, POST_KERNEL, 33, NULL);

DEVICE_DT_DEFINE(DT_NODELABEL(test_dev1_dfr), NULL, NULL, NULL, NULL, POST_KERNEL, 33, NULL);

static int fake_pm_action(const struct device *dev,
		enum pm_device_action pm_action) { return -1; }
PM_DEVICE_DT_DEFINE(DT_NODELABEL(test_dev0_boot), fake_pm_action);