diff --git a/test.sh b/test.sh
new file mode 100755
index 0000000..32ca698
--- /dev/null
+++ b/test.sh
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+set -e
+
+test() {
+    ./scr -rsl example.scr | ./scr -"$1" | cmp - test/test."$1"
+}
+
+test l
+test s
+test d
+test ls
+test ds
+test lsd
diff --git a/test/test.d b/test/test.d
new file mode 100644
index 0000000..e8931fb
--- /dev/null
+++ b/test/test.d
@@ -0,0 +1,68 @@
+----------------------------------------------------------------
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+----------------------------------------------------------------
+2 load
+ok
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+----------------------------------------------------------------
+: ok ." Hello, World!" cr ;
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+----------------------------------------------------------------
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/test/test.ds b/test/test.ds
new file mode 100644
index 0000000..e94fe0f
--- /dev/null
+++ b/test/test.ds
@@ -0,0 +1,68 @@
+--- SCREEN 0 ---------------------------------------------------
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+--- SCREEN 1 ---------------------------------------------------
+2 load
+ok
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+--- SCREEN 2 ---------------------------------------------------
+: ok ." Hello, World!" cr ;
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+--- SCREEN 3 ---------------------------------------------------
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/test/test.l b/test/test.l
new file mode 100644
index 0000000..018f062
--- /dev/null
+++ b/test/test.l
@@ -0,0 +1,64 @@
+ 0 
+ 1 
+ 2 
+ 3 
+ 4 
+ 5 
+ 6 
+ 7 
+ 8 
+ 9 
+10 
+11 
+12 
+13 
+14 
+15 
+ 0 2 load
+ 1 ok
+ 2 
+ 3 
+ 4 
+ 5 
+ 6 
+ 7 
+ 8 
+ 9 
+10 
+11 
+12 
+13 
+14 
+15 
+ 0 : ok ." Hello, World!" cr ;
+ 1 
+ 2 
+ 3 
+ 4 
+ 5 
+ 6 
+ 7 
+ 8 
+ 9 
+10 
+11 
+12 
+13 
+14 
+15 
+ 0 
+ 1 
+ 2 
+ 3 
+ 4 
+ 5 
+ 6 
+ 7 
+ 8 
+ 9 
+10 
+11 
+12 
+13 
+14 
+15 
diff --git a/test/test.ls b/test/test.ls
new file mode 100644
index 0000000..a37de59
--- /dev/null
+++ b/test/test.ls
@@ -0,0 +1,68 @@
+   SCREEN 0
+ 0 
+ 1 
+ 2 
+ 3 
+ 4 
+ 5 
+ 6 
+ 7 
+ 8 
+ 9 
+10 
+11 
+12 
+13 
+14 
+15 
+   SCREEN 1
+ 0 2 load
+ 1 ok
+ 2 
+ 3 
+ 4 
+ 5 
+ 6 
+ 7 
+ 8 
+ 9 
+10 
+11 
+12 
+13 
+14 
+15 
+   SCREEN 2
+ 0 : ok ." Hello, World!" cr ;
+ 1 
+ 2 
+ 3 
+ 4 
+ 5 
+ 6 
+ 7 
+ 8 
+ 9 
+10 
+11 
+12 
+13 
+14 
+15 
+   SCREEN 3
+ 0 
+ 1 
+ 2 
+ 3 
+ 4 
+ 5 
+ 6 
+ 7 
+ 8 
+ 9 
+10 
+11 
+12 
+13 
+14 
+15 
diff --git a/test/test.lsd b/test/test.lsd
new file mode 100644
index 0000000..9691fd1
--- /dev/null
+++ b/test/test.lsd
@@ -0,0 +1,68 @@
+   --- SCREEN 0 ---------------------------------------------------
+ 0 
+ 1 
+ 2 
+ 3 
+ 4 
+ 5 
+ 6 
+ 7 
+ 8 
+ 9 
+10 
+11 
+12 
+13 
+14 
+15 
+   --- SCREEN 1 ---------------------------------------------------
+ 0 2 load
+ 1 ok
+ 2 
+ 3 
+ 4 
+ 5 
+ 6 
+ 7 
+ 8 
+ 9 
+10 
+11 
+12 
+13 
+14 
+15 
+   --- SCREEN 2 ---------------------------------------------------
+ 0 : ok ." Hello, World!" cr ;
+ 1 
+ 2 
+ 3 
+ 4 
+ 5 
+ 6 
+ 7 
+ 8 
+ 9 
+10 
+11 
+12 
+13 
+14 
+15 
+   --- SCREEN 3 ---------------------------------------------------
+ 0 
+ 1 
+ 2 
+ 3 
+ 4 
+ 5 
+ 6 
+ 7 
+ 8 
+ 9 
+10 
+11 
+12 
+13 
+14 
+15 
diff --git a/test/test.s b/test/test.s
new file mode 100644
index 0000000..663ca64
--- /dev/null
+++ b/test/test.s
@@ -0,0 +1,68 @@
+   SCREEN 0
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+   SCREEN 1
+2 load
+ok
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+   SCREEN 2
+: ok ." Hello, World!" cr ;
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+   SCREEN 3
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+