diff --git a/test-lib/test.sld b/test-lib/test.sld
new file mode 100644
index 00000000..e1cf8217
--- /dev/null
+++ b/test-lib/test.sld
@@ -0,0 +1,16 @@
+(define-library (test-lib test)
+  (import (scheme base))
+  (export
+    my-or)
+  (begin
+(define-syntax my-or
+  (er-macro-transformer
+     (lambda (expr rename compare)
+       (cond ((null? (cdr expr)) #f)
+             ((null? (cddr expr)) (cadr expr))
+             (else
+              (list (rename 'let) (list (list (rename 'tmp) (cadr expr)))
+                    (list (rename 'if) (rename 'tmp)
+                          (rename 'tmp)
+                          (cons (rename 'or) (cddr expr)))))))))
+  ))