Improve tests

tests/geom_position.c

@@ -1,3 +1,16 @@
-int test() {
-	return 0;
+#include <assert.h>
+
+#include "../src/geom.h"
+
+static void test_create();
+
+void test() {
+	test_create();
+}
+
+void test_create()
+{
+	const struct Position position = position_create();
+	assert(position.x == 0);
+	assert(position.y == 0);
 }

tests/geom_sizes.c

@@ -1,3 +1,16 @@
-int test() {
-	return 0;
+#include <assert.h>
+
+#include "../src/geom.h"
+
+static void test_create();
+
+void test() {
+	test_create();
+}
+
+void test_create()
+{
+	const struct Sizes sizes = sizes_create();
+	assert(sizes.w == 0);
+	assert(sizes.h == 0);
 }

tests/main.c

@@ -1,19 +1,14 @@
 #include <stdio.h>
+#include <stdlib.h>
 
-int test();
+void test();
 
 void restart() {}
 
 int main(int argc, char **argv)
 {
+	test();
 	const char *const test_name = argv[0];
-	const int test_result = test();
-
-	if (test_result == 0) {
 	printf("[ OK ] %s\n", test_name);
-	} else {
-		printf("[FAIL] %s\n", test_name);
-	}
-
-	return test_result;
+	exit(EXIT_SUCCESS);
 }