diff --git a/tek/src/device.rs b/tek/src/device.rs
index e69de29b..1179f97c 100644
--- a/tek/src/device.rs
+++ b/tek/src/device.rs
@@ -0,0 +1,6 @@
+use crate::*;
+pub trait Device: Send + Sync + std::fmt::Debug {
+    fn boxed <'a> (self) -> Box<dyn Device + 'a> where Self: Sized + 'a { Box::new(self) }
+}
+impl Device for Sampler {}
+impl Device for Plugin {}
diff --git a/tek/src/model.rs b/tek/src/model.rs
index 64682aae..2e946666 100644
--- a/tek/src/model.rs
+++ b/tek/src/model.rs
@@ -145,8 +145,3 @@ impl Tek {
         Ok(())
     }
 }
-pub trait Device: Send + Sync + std::fmt::Debug {
-    fn boxed <'a> (self) -> Box<dyn Device + 'a> where Self: Sized + 'a { Box::new(self) }
-}
-impl Device for Sampler {}
-impl Device for Plugin {}
diff --git a/tek/src/view_arranger.rs b/tek/src/view_arranger.rs
index 4bd3ad69..6b43e5f8 100644
--- a/tek/src/view_arranger.rs
+++ b/tek/src/view_arranger.rs
@@ -333,11 +333,29 @@ fn io_conns <'a, T: PortsSizes<'a>> (
     use super::*;
     #[test] fn test_view_arranger () {
         let mut app = Tek::default();
+        let mut output = TuiOut::default();
         app.editor = Some(Default::default());
-        let _ = io_ports(Reset, Reset, ||app.inputs_sizes());
-        let _ = io_conns(Reset, Reset, ||app.outputs_sizes());
-        let _ = app.per_track(|_, _|());
-        let _ = app.per_track_top(|_, _|());
-        let _ = app.redraw_arranger();
+        app.scenes_add(5);
+        app.tracks_add(5, Some(5), &[], &[]);
+        Content::render(&io_ports(Reset, Reset, ||app.inputs_sizes()),  &mut output);
+        Content::render(&io_conns(Reset, Reset, ||app.outputs_sizes()), &mut output);
+        Content::render(&app.per_track(|_, _|()), &mut output);
+        Content::render(&app.per_track_top(|_, _|()), &mut output);
+        app.redraw_arranger();
+        Content::render(&app.view_arranger(), &mut output);
+        Content::render(&app.view_inputs(),   &mut output);
+        Content::render(&app.view_outputs(),  &mut output);
+        Content::render(&track_header(0, &Default::default(), true), &mut output);
+        Content::render(&scene_cell(
+            false,
+            None,
+            false,
+            0,
+            &Default::default(),
+            None,
+            None,
+            &"",
+            Default::default(),
+        ), &mut output);
     }
 }