test: sort-of autodetect whether we need root privileges

It's not really autodetection, we just declare the test suites that need root
privs. But this way we can generically check for it from the main() that we
re-use across tests.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

test/test-common.h

@@ -22,6 +22,7 @@
 
 #include <config.h>
 #include <libevdev/libevdev.h>
+#include <stdbool.h>
 
 #include <check.h>
 
@@ -31,17 +32,24 @@
 struct libevdev_test {
 	const char *name;
 	Suite* (*setup)(void);
+	bool needs_root_privileges;
 } __attribute__((aligned(16)));
 
-#define TEST_SUITE(name) \
+#define _TEST_SUITE(name, root_privs) \
 	static Suite* (name##_setup)(void); \
 	static const struct libevdev_test _test \
 	__attribute__((used)) \
 	__attribute__((section ("test_section"))) = { \
-		#name, name##_setup \
+		#name, name##_setup, root_privs \
 	}; \
 	static Suite* (name##_setup)(void)
 
+#define TEST_SUITE(name) \
+	_TEST_SUITE(name, false)
+
+#define TEST_SUITE_ROOT_PRIVILEGES(name) \
+	_TEST_SUITE(name, true)
+
 #define TEST_DEVICE_NAME "libevdev test device"
 
 #include "test-common-uinput.h"

test/test-libevdev-events.c

@@ -2140,7 +2140,7 @@ START_TEST(test_event_mt_value_setters_current_slot)
 }
 END_TEST
 
-TEST_SUITE(libevdev_events)
+TEST_SUITE_ROOT_PRIVILEGES(libevdev_events)
 {
 	Suite *s = suite_create("libevdev event tests");
 

test/test-libevdev-has-event.c

@@ -1142,7 +1142,7 @@ START_TEST(test_led_same)
 }
 END_TEST
 
-TEST_SUITE(has_events)
+TEST_SUITE_ROOT_PRIVILEGES(has_events)
 {
 	Suite *s = suite_create("libevdev_has_event tests");
 

test/test-libevdev-init.c

@@ -683,7 +683,7 @@ START_TEST(test_clock_id_events)
 }
 END_TEST
 
-TEST_SUITE(libevdev_init_test)
+TEST_SUITE_ROOT_PRIVILEGES(libevdev_init_test)
 {
 	Suite *s = suite_create("libevdev init tests");
 

test/test-main.c

@@ -68,9 +68,14 @@ int main(void)
 	const struct rlimit corelimit = {0, 0};
 	int failed;
 
-	if (getuid() != 0) {
-		fprintf(stderr, "This test needs to run as root\n");
-		return 77;
+	for (t = &__start_test_section; t < &__stop_test_section; t++) {
+		if (t->needs_root_privileges) {
+			if (getuid() != 0) {
+				fprintf(stderr, "This test needs to run as root\n");
+				return 77;
+			}
+			break;
+		}
 	}
 
 	if (is_debugger_attached())

test/test-uinput.c

@@ -368,7 +368,7 @@ START_TEST(test_uinput_properties)
 }
 END_TEST
 
-TEST_SUITE(uinput_suite)
+TEST_SUITE_ROOT_PRIVILEGES(uinput_suite)
 {
 	Suite *s = suite_create("libevdev uinput device tests");