diff --git a/t-lack-middleware-mount.asd b/t-lack-middleware-mount.asd
new file mode 100644
index 0000000..668bb63
--- /dev/null
+++ b/t-lack-middleware-mount.asd
@@ -0,0 +1,19 @@
+(in-package :cl-user)
+(defpackage t-lack-middleware-mount-asd
+  (:use :cl :asdf))
+(in-package :t-lack-middleware-mount-asd)
+
+(defsystem t-lack-middleware-mount
+  :author "Rudolph Miller"
+  :license "LLGPL"
+  :depends-on (:lack
+               :lack-test
+               :lack-component
+               :lack-middleware-mount
+               :prove)
+  :components
+  ((:test-file "t/middleware/mount"))
+
+  :defsystem-depends-on (:prove-asdf)
+  :perform (test-op :after (op c)
+                    (funcall (intern #.(string :run-test-system) :prove) c)))
diff --git a/t/middleware/mount.lisp b/t/middleware/mount.lisp
new file mode 100644
index 0000000..f3b5ae0
--- /dev/null
+++ b/t/middleware/mount.lisp
@@ -0,0 +1,72 @@
+(in-package :cl-user)
+(defpackage t.lack.middleware.mount
+  (:use :cl
+        :lack
+        :lack.test
+        :lack.component
+        :prove))
+(in-package :t.lack.middleware.mount)
+
+(plan 2)
+
+(defclass test-component (lack-component) ())
+
+(defmethod call ((app test-component) env)
+  (declare (ignore env))
+  '(200 () "mount2"))
+
+(subtest "dispatch"
+  (macrolet ((mount-test (component)
+               `(let* ((not-mounted '(200 () ("not-mounted")))
+                       (app
+                         (builder
+                          (:mount "/mount" ,component)
+                          (lambda (env)
+                            (declare (ignore env))
+                            not-mounted))))
+                  (let ((expected (funcall (to-app ,component) (generate-env "/")))
+                        (result1 (funcall app (generate-env "/mount")))
+                        (result2 (funcall app (generate-env "/mount/test")))
+                        (result3 (funcall app (generate-env "/test"))))
+                    (is result1
+                        expected
+                        "string=.")
+
+                    (is result2
+                        expected
+                        "subseq.")
+
+                    (is result3
+                        not-mounted
+                        "t.")))))
+    (subtest "(lambda (env) ...)"
+      (mount-test
+       (lambda (env)
+         (declare (ignore env))
+         '(200 () ("mount")))))
+    (subtest "lack-component"
+      (mount-test (make-instance 'test-component)))))
+
+(subtest "path-info"
+  (macrolet ((is-path-info (env expected &optional comment)
+               `(is (getf ,env :path-info)
+                    ,expected
+                    ,@(when comment (list comment)))))
+  (let* ((response '(200 () ("ok")))
+         (app
+          (builder
+           (:mount "/mount1"
+                   (lambda (env)
+                     (is-path-info env "/" "string=.")
+                     response))
+           (:mount "/mount2"
+                   (lambda (env)
+                     (is-path-info env "/test" "subseq.")
+                     response))
+           (lambda (env)
+             (is-path-info env "/test" "t.")
+             response))))
+    (dolist (path (list "/mount1" "/mount2/test" "/test"))
+      (funcall app (generate-env path))))))
+
+(finalize)