diff --git a/test/add-func.zre b/test/add-func.zre
deleted file mode 100644
index 248e445..0000000
--- a/test/add-func.zre
+++ /dev/null
@@ -1,6 +0,0 @@
-int add(int a, int b) {
-  return a + b;
-}
-
-int sum = add(1, 1);
-print(sum.toS());
diff --git a/test/add.zre b/test/add.zre
index 9b3c2e2..248e445 100644
--- a/test/add.zre
+++ b/test/add.zre
@@ -1,2 +1,6 @@
-int sum = 1 + 2;
+int add(int a, int b) {
+  return a + b;
+}
+
+int sum = add(1, 1);
 print(sum.toS());
diff --git a/test/simple.s b/test/simple.s
new file mode 100644
index 0000000..33970b6
--- /dev/null
+++ b/test/simple.s
@@ -0,0 +1,7 @@
+main:
+	loadu $0 1
+	loadu $1 2
+	addu $2 $1 $0
+	utos $3 $2
+	puts $3
+	halt
diff --git a/test/simple.zre b/test/simple.zre
new file mode 100644
index 0000000..9b3c2e2
--- /dev/null
+++ b/test/simple.zre
@@ -0,0 +1,2 @@
+int sum = 1 + 2;
+print(sum.toS());