diff --git a/test/hello.c b/test/hello.c
index 879069d..02713b7 100644
--- a/test/hello.c
+++ b/test/hello.c
@@ -1,40 +1,27 @@
-#include <stdarg.h>
+#include <fx/diagnostics/process.h>
 #include <stdio.h>
 
-static int another_function(int a, double b, int c)
+int main(int argc, const char **argv)
 {
-	printf("a=%d, b=%lf, c=%d\n", a, b, c);
-	return 2;
-}
+	printf("%d args:\n", argc);
 
-static int test_function(int a, int b, int c, ...)
-{
-	va_list args;
-	va_start(args, c);
-	int d = va_arg(args, int);
-	int e = va_arg(args, int);
-	int f = va_arg(args, int);
-	int g = va_arg(args, int);
-	int h = va_arg(args, int);
-	int i = va_arg(args, int);
-	int j = va_arg(args, int);
-	printf("a=%d, b=%d, c=%d, d=%d, e=%d, f=%d, g=%d, h=%d, i=%d, j=%d\n",
-	       a,
-	       b,
-	       c,
-	       d,
-	       e,
-	       f,
-	       g,
-	       h,
-	       i,
-	       j);
-	return a + b + c + d + e;
-}
+	for (int i = 0; i < argc; i++) {
+		printf("%s\n", argv[i]);
+	}
+
+	printf("environment:\n");
+	fx_process *self = fx_process_get_self();
+	const fx_hashtable *env = fx_process_get_environment(self);
+	fx_object_to_string(env, fx_stdout, NULL);
+	printf("\n");
+
+	printf("read from stdin...\n");
+	char line[128];
+	if (fgets(line, sizeof line, stdin)) {
+		printf("read: %s\n", line);
+	} else {
+		printf("read failed\n");
+	}
 
-int main(void)
-{
-	test_function(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
-	another_function(1, 2.5, 5);
 	return 0;
 }