Unit test

src/tui/ui.rs

@@ -414,8 +414,8 @@ impl<'a> ArtistOverlay<'a> {
     }
 
     fn opt_vec_to_string<U: IUrl>(opt_vec: Option<&Vec<U>>, indent: &str) -> String {
-        match opt_vec {
+        opt_vec
-            Some(vec) => {
+            .map(|vec| {
                 if vec.len() < 2 {
                     vec.get(0).map(|item| item.url()).unwrap_or("").to_string()
                 } else {
@@ -427,9 +427,8 @@ impl<'a> ArtistOverlay<'a> {
                         .join(&indent);
                     format!("{indent}{list}")
                 }
-            }
+            })
-            None => String::from(""),
+            .unwrap_or_else(|| String::from(""))
-        }
     }
 
     fn new(artists: &'a [Artist], state: &ListState) -> ArtistOverlay<'a> {
@@ -686,7 +685,7 @@ impl<MH: IMusicHoard> Ui<MH> {
         let artists = self.music_hoard.get_collection();
         let artist_selection = &mut self.selection.artist;
 
-        let artist_overlay = ArtistOverlay::new(&artists, &artist_selection.state);
+        let artist_overlay = ArtistOverlay::new(artists, &artist_selection.state);
         Self::render_overlay_widget("Artist", artist_overlay.properties, areas.artist, frame);
     }
 }
@@ -1171,6 +1170,27 @@ mod tests {
         terminal.draw(|frame| ui.render(frame)).unwrap();
     }
 
+    #[test]
+    fn overlay() {
+        let mut terminal = terminal();
+        let mut ui = ui(COLLECTION.to_owned());
+
+        terminal.draw(|frame| ui.render(frame)).unwrap();
+
+        ui.toggle_overlay();
+
+        terminal.draw(|frame| ui.render(frame)).unwrap();
+
+        // Change the artist (which has a multi-link entry).
+        ui.increment_selection();
+
+        terminal.draw(|frame| ui.render(frame)).unwrap();
+
+        ui.toggle_overlay();
+
+        terminal.draw(|frame| ui.render(frame)).unwrap();
+    }
+
     #[test]
     fn errors() {
         let ui_err: UiError = musichoard::Error::DatabaseError(String::from("get rekt")).into();