doctest rtems example

[Sam Price]

/* Tell doctest to not use its own main */
#define DOCTEST_CONFIG_IMPLEMENT
/* tell doctest to not use sigint that rtems does not have */
#define DOCTEST_CONFIG_NO_POSIX_SIGNALS
#include "doctest.h"

/* Setup command line part */
const char rtems_test_name[] = "DOCTEST UNIT TESTS";

static int run_doctest_tests(int argc, char **argv) {

// Initialize doctest context
doctest::Context context(argc, argv);

int test_result = context.run(); // run queries, or run tests unless --no-run

if(context.shouldExit()) // honor query flags and --exit
return test_result;
return 0;
}

rtems_shell_cmd_t Shell_DOCTEST_Command = {
"doctest", /* name */
"doctest [doctest options]", /* usage */
"tests", /* topic */
run_doctest_tests, /* command */
NULL, /* alias */
NULL /* next */
};

/* Inside of your Init add the following prior to starting shell */
rtems_task Init(rtems_task_argument ignored)
{
....

rtems_shell_add_cmd_struct(&Shell_DOCTEST_Command);
/* Note i made this high priority, some of my tests require priority access. */
/* It may be better to use 100, and use the following in your test
rtems_task_priority old_priority;
rtems_task_set_priority(RTEMS_SELF, 0, &old_priority);
...
rtems_task_set_priority(RTEMS_SELF, old_priority, 0x0);
*/

rtems_shell_init("shell0", 20 * 1024, 2, "/dev/console", 0, 1, NULL);
...
}

TEST_CASE("testing the addition function") {
CHECK((2 + 2) == 4);
CHECK((2 + 2) == 4.0);
}