diff --git a/tek/src/view.rs b/tek/src/view.rs
index 983c6362..6f4ace2a 100644
--- a/tek/src/view.rs
+++ b/tek/src/view.rs
@@ -145,5 +145,7 @@ fn heading <'a> (
         let _ = heading("", "", 0, "", true);
         let _ = heading("", "", 0, "", false);
         let _ = wrap(Reset, Reset, "");
+        let _ = row(0, 0, 0, "", "", "");
+        let _ = row_top(0, 0, 0, "", "", "");
     }
 }
diff --git a/tek/src/view_arranger.rs b/tek/src/view_arranger.rs
index 7c0848c6..c7ab44d7 100644
--- a/tek/src/view_arranger.rs
+++ b/tek/src/view_arranger.rs
@@ -25,7 +25,7 @@ impl Tek {
     /// as the rendering logic of [redraw_arranger] is only invoked on
     /// changes to the content.
     pub fn view_arranger (&self) -> impl Content<TuiOut> + use<'_> {
-        ThunkRender::new(move|to: &mut TuiOut|{
+        Fill::xy(ThunkRender::new(move|to: &mut TuiOut|{
             let [x0, y0, w, h] = to.area().xywh();
             let source = self.arranger.read().unwrap();
             for (source_x, target_x) in (x0..x0+w).enumerate() {
@@ -33,15 +33,14 @@ impl Tek {
                     let source_pos = Position::from((source_x as u16, source_y as u16));
                     let target_pos = Position::from((target_x, target_y));
                     if let Some(target) = to.buffer.cell_mut(target_pos) {
+                        //target.set_bg(Color::Red);
                         if let Some(source) = source.cell(source_pos) {
                             *target = source.clone();
                         }
                     }
                 }
             }
-            // TODO
-            ()
-        })
+        }))
     }
 
     /// Display the current scene scroll state.
@@ -308,17 +307,12 @@ fn io_conns <'a, T: PortsSizes<'a>> (
 #[cfg(test)] mod test {
     use super::*;
     #[test] fn test_view_arranger () {
-        let app = Tek::default();
+        let mut app = Tek::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();
-        //let _ = app.view_editor();
-        //let _ = app.view_pool();
-        //let _ = app.row(0, 0, "", "", "");
-        //let _ = app.row_top(0, 0, "", "", "");
-        //let _ = app.io_ports(Reset, Reset, ||[].iter());
-        //let _ = app.io_conns(Reset, Reset, ||[].iter());
     }
 }
diff --git a/tek/src/view_clock.rs b/tek/src/view_clock.rs
index 2de619cc..8605d01f 100644
--- a/tek/src/view_clock.rs
+++ b/tek/src/view_clock.rs
@@ -71,3 +71,14 @@ fn button_play_pause (playing: bool) -> impl Content<TuiOut> {
                 Tui::fg(Rgb(0, 255, 0),   Bsp::s(" 🭍🭑🬽 ", " 🭞🭜🭘 ",)),
                 Tui::fg(Rgb(255, 128, 0), Bsp::s(" ▗▄▖ ", " ▝▀▘ ",)))))))
 }
+
+#[cfg(test)] mod test {
+    use super::*;
+    #[test] fn test_view_clock () {
+        let _ = button_play_pause(true);
+        let mut app = Tek::default();
+        let _ = app.view_transport();
+        let _ = app.view_status();
+        let _ = app.update_clock();
+    }
+}