Complete unit tests

src/tui/app/machine/search.rs

@@ -387,8 +387,9 @@ mod tests {
         let sel = &search.inner.selection;
         assert_eq!(sel.artist.album.state.list.selected(), Some(0));
 
-        search.state.string = String::from("album_title a.b");
+        let search = search.append_character('a').unwrap_search();
-        search.incremental_search(false);
+        let search = search.append_character('.').unwrap_search();
+        let search = search.append_character('b').unwrap_search();
 
         let sel = &search.inner.selection;
         assert_eq!(sel.artist.album.state.list.selected(), Some(1));
@@ -409,8 +410,11 @@ mod tests {
         let sel = &search.inner.selection;
         assert_eq!(sel.artist.album.track.state.list.selected(), Some(0));
 
-        search.state.string = String::from("track a.a.2");
+        let search = search.append_character('a').unwrap_search();
-        search.incremental_search(false);
+        let search = search.append_character('.').unwrap_search();
+        let search = search.append_character('a').unwrap_search();
+        let search = search.append_character('.').unwrap_search();
+        let search = search.append_character('2').unwrap_search();
 
         let sel = &search.inner.selection;
         assert_eq!(sel.artist.album.track.state.list.selected(), Some(1));

src/tui/app/selection/album.rs

@@ -1,6 +1,9 @@
 use std::cmp;
 
-use musichoard::collection::{album::{Album, AlbumId}, track::Track};
+use musichoard::collection::{
+    album::{Album, AlbumId},
+    track::Track,
+};
 
 use crate::tui::app::selection::{
     track::{IdSelectTrack, TrackSelection},
@@ -172,59 +175,92 @@ mod tests {
 
     use super::*;
 
+    #[test]
+    fn album_select() {
+        let albums = &COLLECTION[0].albums;
+        assert!(albums.len() > 1);
+
+        let mut sel = AlbumSelection::initialise(albums);
+        assert_eq!(sel.selected(), Some(0));
+        assert_eq!(sel.selected_track(), Some(0));
+
+        sel.select(albums, None);
+        assert_eq!(sel.selected(), None);
+        assert_eq!(sel.selected_track(), Some(0));
+
+        sel.select(albums, Some(albums.len()));
+        assert_eq!(sel.selected(), Some(albums.len() - 1));
+        assert_eq!(sel.selected_track(), Some(0));
+
+        sel.select_track(albums, None);
+        assert_eq!(sel.selected(), Some(albums.len() - 1));
+        assert_eq!(sel.selected_track(), None);
+
+        sel.reset_track(albums);
+        assert_eq!(sel.selected(), Some(albums.len() - 1));
+        assert_eq!(sel.selected_track(), Some(0));
+
+        sel.select_track(albums, Some(1));
+        assert_eq!(sel.selected(), Some(albums.len() - 1));
+        assert_eq!(sel.selected_track(), Some(1));
+
+        sel.reset(albums);
+        assert_eq!(sel.selected(), Some(0));
+        assert_eq!(sel.selected_track(), Some(0));
+    }
 
     #[test]
-    fn album_selection() {
+    fn album_delta_line() {
         let albums = &COLLECTION[0].albums;
         assert!(albums.len() > 1);
 
         let mut empty = AlbumSelection::initialise(&[]);
-        assert_eq!(empty.state.list.selected(), None);
+        assert_eq!(empty.selected(), None);
-        assert_eq!(empty.track.state.list.selected(), None);
+        assert_eq!(empty.selected_track(), None);
 
         empty.increment(albums, Delta::Line);
-        assert_eq!(empty.state.list.selected(), None);
+        assert_eq!(empty.selected(), None);
-        assert_eq!(empty.track.state.list.selected(), None);
+        assert_eq!(empty.selected_track(), None);
 
         empty.decrement(albums, Delta::Line);
-        assert_eq!(empty.state.list.selected(), None);
+        assert_eq!(empty.selected(), None);
-        assert_eq!(empty.track.state.list.selected(), None);
+        assert_eq!(empty.selected_track(), None);
 
         let mut sel = AlbumSelection::initialise(albums);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
-        assert_eq!(sel.track.state.list.selected(), Some(0));
+        assert_eq!(sel.selected_track(), Some(0));
 
         sel.increment_track(albums, Delta::Line);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
-        assert_eq!(sel.track.state.list.selected(), Some(1));
+        assert_eq!(sel.selected_track(), Some(1));
 
         // Verify that decrement that doesn't change index does not reset track.
         sel.decrement(albums, Delta::Line);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
-        assert_eq!(sel.track.state.list.selected(), Some(1));
+        assert_eq!(sel.selected_track(), Some(1));
 
         sel.increment(albums, Delta::Line);
-        assert_eq!(sel.state.list.selected(), Some(1));
+        assert_eq!(sel.selected(), Some(1));
-        assert_eq!(sel.track.state.list.selected(), Some(0));
+        assert_eq!(sel.selected_track(), Some(0));
 
         sel.decrement(albums, Delta::Line);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
-        assert_eq!(sel.track.state.list.selected(), Some(0));
+        assert_eq!(sel.selected_track(), Some(0));
 
         for _ in 0..(albums.len() + 5) {
             sel.increment(albums, Delta::Line);
         }
-        assert_eq!(sel.state.list.selected(), Some(albums.len() - 1));
+        assert_eq!(sel.selected(), Some(albums.len() - 1));
-        assert_eq!(sel.track.state.list.selected(), Some(0));
+        assert_eq!(sel.selected_track(), Some(0));
 
         sel.increment_track(albums, Delta::Line);
-        assert_eq!(sel.state.list.selected(), Some(albums.len() - 1));
+        assert_eq!(sel.selected(), Some(albums.len() - 1));
-        assert_eq!(sel.track.state.list.selected(), Some(1));
+        assert_eq!(sel.selected_track(), Some(1));
 
         // Verify that increment that doesn't change index does not reset track.
         sel.increment(albums, Delta::Line);
-        assert_eq!(sel.state.list.selected(), Some(albums.len() - 1));
+        assert_eq!(sel.selected(), Some(albums.len() - 1));
-        assert_eq!(sel.track.state.list.selected(), Some(1));
+        assert_eq!(sel.selected_track(), Some(1));
     }
 
     #[test]
@@ -233,46 +269,46 @@ mod tests {
         assert!(albums.len() > 1);
 
         let empty = AlbumSelection::initialise(&[]);
-        assert_eq!(empty.state.list.selected(), None);
+        assert_eq!(empty.selected(), None);
 
         let mut sel = AlbumSelection::initialise(albums);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
-        assert_eq!(sel.track.state.list.selected(), Some(0));
+        assert_eq!(sel.selected_track(), Some(0));
 
         assert!(albums.len() >= 4);
         sel.state.height = 3;
 
         sel.increment_track(albums, Delta::Line);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
-        assert_eq!(sel.track.state.list.selected(), Some(1));
+        assert_eq!(sel.selected_track(), Some(1));
 
         // Verify that decrement that doesn't change index does not reset track.
         sel.decrement(albums, Delta::Page);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
-        assert_eq!(sel.track.state.list.selected(), Some(1));
+        assert_eq!(sel.selected_track(), Some(1));
 
         sel.increment(albums, Delta::Page);
-        assert_eq!(sel.state.list.selected(), Some(2));
+        assert_eq!(sel.selected(), Some(2));
-        assert_eq!(sel.track.state.list.selected(), Some(0));
+        assert_eq!(sel.selected_track(), Some(0));
 
         sel.decrement(albums, Delta::Page);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
-        assert_eq!(sel.track.state.list.selected(), Some(0));
+        assert_eq!(sel.selected_track(), Some(0));
 
         for _ in 0..(albums.len() + 5) {
             sel.increment(albums, Delta::Page);
         }
-        assert_eq!(sel.state.list.selected(), Some(albums.len() - 1));
+        assert_eq!(sel.selected(), Some(albums.len() - 1));
-        assert_eq!(sel.track.state.list.selected(), Some(0));
+        assert_eq!(sel.selected_track(), Some(0));
 
         sel.increment_track(albums, Delta::Line);
-        assert_eq!(sel.state.list.selected(), Some(albums.len() - 1));
+        assert_eq!(sel.selected(), Some(albums.len() - 1));
-        assert_eq!(sel.track.state.list.selected(), Some(1));
+        assert_eq!(sel.selected_track(), Some(1));
 
         // Verify that increment that doesn't change index does not reset track.
         sel.increment(albums, Delta::Page);
-        assert_eq!(sel.state.list.selected(), Some(albums.len() - 1));
+        assert_eq!(sel.selected(), Some(albums.len() - 1));
-        assert_eq!(sel.track.state.list.selected(), Some(1));
+        assert_eq!(sel.selected_track(), Some(1));
     }
 
     #[test]

src/tui/app/selection/artist.rs

@@ -204,59 +204,114 @@ mod tests {
 
     use super::*;
 
+    #[test]
+    fn artist_select() {
+        let artists = &COLLECTION;
+        assert!(artists.len() > 1);
+
+        let mut sel = ArtistSelection::initialise(artists);
+        assert_eq!(sel.selected(), Some(0));
+        assert_eq!(sel.selected_album(), Some(0));
+        assert_eq!(sel.selected_track(), Some(0));
+
+        sel.select(artists, None);
+        assert_eq!(sel.selected(), None);
+        assert_eq!(sel.selected_album(), Some(0));
+        assert_eq!(sel.selected_track(), Some(0));
+
+        sel.select(artists, Some(artists.len()));
+        assert_eq!(sel.selected(), Some(artists.len() - 1));
+        assert_eq!(sel.selected_album(), Some(0));
+        assert_eq!(sel.selected_track(), Some(0));
+
+        sel.select_track(artists, None);
+        assert_eq!(sel.selected(), Some(artists.len() - 1));
+        assert_eq!(sel.selected_album(), Some(0));
+        assert_eq!(sel.selected_track(), None);
+
+        sel.select_album(artists, None);
+        assert_eq!(sel.selected(), Some(artists.len() - 1));
+        assert_eq!(sel.selected_album(), None);
+        assert_eq!(sel.selected_track(), None);
+
+        sel.reset_album(artists);
+        assert_eq!(sel.selected(), Some(artists.len() - 1));
+        assert_eq!(sel.selected_album(), Some(0));
+        assert_eq!(sel.selected_track(), Some(0));
+
+        sel.select_track(artists, None);
+        assert_eq!(sel.selected(), Some(artists.len() - 1));
+        assert_eq!(sel.selected_album(), Some(0));
+        assert_eq!(sel.selected_track(), None);
+
+        sel.reset_track(artists);
+        assert_eq!(sel.selected(), Some(artists.len() - 1));
+        assert_eq!(sel.selected_album(), Some(0));
+        assert_eq!(sel.selected_track(), Some(0));
+
+        sel.select_album(artists, Some(1));
+        assert_eq!(sel.selected(), Some(artists.len() - 1));
+        assert_eq!(sel.selected_album(), Some(1));
+        assert_eq!(sel.selected_track(), Some(0));
+
+        sel.reset(artists);
+        assert_eq!(sel.selected(), Some(0));
+        assert_eq!(sel.selected_album(), Some(0));
+        assert_eq!(sel.selected_track(), Some(0));
+    }
 
     #[test]
-    fn artist_selection() {
+    fn artist_delta_line() {
         let artists = &COLLECTION;
         assert!(artists.len() > 1);
 
         let mut empty = ArtistSelection::initialise(&[]);
-        assert_eq!(empty.state.list.selected(), None);
+        assert_eq!(empty.selected(), None);
-        assert_eq!(empty.album.state.list.selected(), None);
+        assert_eq!(empty.album.selected(), None);
 
         empty.increment(artists, Delta::Line);
-        assert_eq!(empty.state.list.selected(), None);
+        assert_eq!(empty.selected(), None);
-        assert_eq!(empty.album.state.list.selected(), None);
+        assert_eq!(empty.album.selected(), None);
 
         empty.decrement(artists, Delta::Line);
-        assert_eq!(empty.state.list.selected(), None);
+        assert_eq!(empty.selected(), None);
-        assert_eq!(empty.album.state.list.selected(), None);
+        assert_eq!(empty.album.selected(), None);
 
         let mut sel = ArtistSelection::initialise(artists);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
-        assert_eq!(sel.album.state.list.selected(), Some(0));
+        assert_eq!(sel.album.selected(), Some(0));
 
         sel.increment_album(artists, Delta::Line);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
-        assert_eq!(sel.album.state.list.selected(), Some(1));
+        assert_eq!(sel.album.selected(), Some(1));
 
         // Verify that decrement that doesn't change index does not reset album.
         sel.decrement(artists, Delta::Line);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
-        assert_eq!(sel.album.state.list.selected(), Some(1));
+        assert_eq!(sel.album.selected(), Some(1));
 
         sel.increment(artists, Delta::Line);
-        assert_eq!(sel.state.list.selected(), Some(1));
+        assert_eq!(sel.selected(), Some(1));
-        assert_eq!(sel.album.state.list.selected(), Some(0));
+        assert_eq!(sel.album.selected(), Some(0));
 
         sel.decrement(artists, Delta::Line);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
-        assert_eq!(sel.album.state.list.selected(), Some(0));
+        assert_eq!(sel.album.selected(), Some(0));
 
         for _ in 0..(artists.len() + 5) {
             sel.increment(artists, Delta::Line);
         }
-        assert_eq!(sel.state.list.selected(), Some(artists.len() - 1));
+        assert_eq!(sel.selected(), Some(artists.len() - 1));
-        assert_eq!(sel.album.state.list.selected(), Some(0));
+        assert_eq!(sel.album.selected(), Some(0));
 
         sel.increment_album(artists, Delta::Line);
-        assert_eq!(sel.state.list.selected(), Some(artists.len() - 1));
+        assert_eq!(sel.selected(), Some(artists.len() - 1));
-        assert_eq!(sel.album.state.list.selected(), Some(1));
+        assert_eq!(sel.album.selected(), Some(1));
 
         // Verify that increment that doesn't change index does not reset album.
         sel.increment(artists, Delta::Line);
-        assert_eq!(sel.state.list.selected(), Some(artists.len() - 1));
+        assert_eq!(sel.selected(), Some(artists.len() - 1));
-        assert_eq!(sel.album.state.list.selected(), Some(1));
+        assert_eq!(sel.album.selected(), Some(1));
     }
 
     #[test]
@@ -265,46 +320,46 @@ mod tests {
         assert!(artists.len() > 1);
 
         let empty = ArtistSelection::initialise(&[]);
-        assert_eq!(empty.state.list.selected(), None);
+        assert_eq!(empty.selected(), None);
 
         let mut sel = ArtistSelection::initialise(artists);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
-        assert_eq!(sel.album.state.list.selected(), Some(0));
+        assert_eq!(sel.album.selected(), Some(0));
 
         assert!(artists.len() >= 4);
         sel.state.height = 3;
 
         sel.increment_album(artists, Delta::Line);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
-        assert_eq!(sel.album.state.list.selected(), Some(1));
+        assert_eq!(sel.album.selected(), Some(1));
 
         // Verify that decrement that doesn't change index does not reset album.
         sel.decrement(artists, Delta::Page);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
-        assert_eq!(sel.album.state.list.selected(), Some(1));
+        assert_eq!(sel.album.selected(), Some(1));
 
         sel.increment(artists, Delta::Page);
-        assert_eq!(sel.state.list.selected(), Some(2));
+        assert_eq!(sel.selected(), Some(2));
-        assert_eq!(sel.album.state.list.selected(), Some(0));
+        assert_eq!(sel.album.selected(), Some(0));
 
         sel.decrement(artists, Delta::Page);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
-        assert_eq!(sel.album.state.list.selected(), Some(0));
+        assert_eq!(sel.album.selected(), Some(0));
 
         for _ in 0..(artists.len() + 5) {
             sel.increment(artists, Delta::Page);
         }
-        assert_eq!(sel.state.list.selected(), Some(artists.len() - 1));
+        assert_eq!(sel.selected(), Some(artists.len() - 1));
-        assert_eq!(sel.album.state.list.selected(), Some(0));
+        assert_eq!(sel.album.selected(), Some(0));
 
         sel.increment_album(artists, Delta::Line);
-        assert_eq!(sel.state.list.selected(), Some(artists.len() - 1));
+        assert_eq!(sel.selected(), Some(artists.len() - 1));
-        assert_eq!(sel.album.state.list.selected(), Some(1));
+        assert_eq!(sel.album.selected(), Some(1));
 
         // Verify that increment that doesn't change index does not reset album.
         sel.increment(artists, Delta::Page);
-        assert_eq!(sel.state.list.selected(), Some(artists.len() - 1));
+        assert_eq!(sel.selected(), Some(artists.len() - 1));
-        assert_eq!(sel.album.state.list.selected(), Some(1));
+        assert_eq!(sel.album.selected(), Some(1));
     }
 
     #[test]

src/tui/app/selection/mod.rs

@@ -232,81 +232,148 @@ mod tests {
     use super::*;
 
     #[test]
-    fn selection() {
+    fn selection_select() {
+        let mut selection = Selection::new(&COLLECTION);
+
+        selection.select(&COLLECTION, Some(1));
+        selection.increment_category();
+        selection.select(&COLLECTION, Some(1));
+        selection.increment_category();
+        selection.select(&COLLECTION, Some(1));
+
+        assert_eq!(selection.active, Category::Track);
+        assert_eq!(selection.artist.selected(), Some(1));
+        assert_eq!(selection.artist.album.selected(), Some(1));
+        assert_eq!(selection.artist.album.track.selected(), Some(1));
+
+        selection.reset(&COLLECTION);
+
+        assert_eq!(selection.active, Category::Track);
+        assert_eq!(selection.artist.selected(), Some(1));
+        assert_eq!(selection.artist.album.selected(), Some(1));
+        assert_eq!(selection.artist.album.track.selected(), Some(0));
+
+        selection.select(&COLLECTION, Some(1));
+
+        assert_eq!(selection.active, Category::Track);
+        assert_eq!(selection.artist.selected(), Some(1));
+        assert_eq!(selection.artist.album.selected(), Some(1));
+        assert_eq!(selection.artist.album.track.selected(), Some(1));
+
+        selection.decrement_category();
+
+        selection.reset(&COLLECTION);
+
+        assert_eq!(selection.active, Category::Album);
+        assert_eq!(selection.artist.selected(), Some(1));
+        assert_eq!(selection.artist.album.selected(), Some(0));
+        assert_eq!(selection.artist.album.track.selected(), Some(0));
+
+        selection.select(&COLLECTION, Some(1));
+
+        assert_eq!(selection.active, Category::Album);
+        assert_eq!(selection.artist.selected(), Some(1));
+        assert_eq!(selection.artist.album.selected(), Some(1));
+        assert_eq!(selection.artist.album.track.selected(), Some(0));
+
+        selection.decrement_category();
+
+        selection.reset(&COLLECTION);
+
+        assert_eq!(selection.active, Category::Artist);
+        assert_eq!(selection.artist.selected(), Some(0));
+        assert_eq!(selection.artist.album.selected(), Some(0));
+        assert_eq!(selection.artist.album.track.selected(), Some(0));
+    }
+
+    #[test]
+    fn selection_delta() {
         let mut selection = Selection::new(&COLLECTION);
 
         assert_eq!(selection.active, Category::Artist);
-        assert_eq!(selection.artist.state.list.selected(), Some(0));
+        assert_eq!(selection.selected(), Some(0));
-        assert_eq!(selection.artist.album.state.list.selected(), Some(0));
+        assert_eq!(selection.artist.selected(), Some(0));
-        assert_eq!(selection.artist.album.track.state.list.selected(), Some(0));
+        assert_eq!(selection.artist.album.selected(), Some(0));
+        assert_eq!(selection.artist.album.track.selected(), Some(0));
 
         selection.increment_selection(&COLLECTION, Delta::Line);
         assert_eq!(selection.active, Category::Artist);
-        assert_eq!(selection.artist.state.list.selected(), Some(1));
+        assert_eq!(selection.selected(), Some(1));
-        assert_eq!(selection.artist.album.state.list.selected(), Some(0));
+        assert_eq!(selection.artist.selected(), Some(1));
-        assert_eq!(selection.artist.album.track.state.list.selected(), Some(0));
+        assert_eq!(selection.artist.album.selected(), Some(0));
+        assert_eq!(selection.artist.album.track.selected(), Some(0));
 
         selection.increment_category();
         assert_eq!(selection.active, Category::Album);
-        assert_eq!(selection.artist.state.list.selected(), Some(1));
+        assert_eq!(selection.selected(), Some(0));
-        assert_eq!(selection.artist.album.state.list.selected(), Some(0));
+        assert_eq!(selection.artist.selected(), Some(1));
-        assert_eq!(selection.artist.album.track.state.list.selected(), Some(0));
+        assert_eq!(selection.artist.album.selected(), Some(0));
+        assert_eq!(selection.artist.album.track.selected(), Some(0));
 
         selection.increment_selection(&COLLECTION, Delta::Line);
         assert_eq!(selection.active, Category::Album);
-        assert_eq!(selection.artist.state.list.selected(), Some(1));
+        assert_eq!(selection.selected(), Some(1));
-        assert_eq!(selection.artist.album.state.list.selected(), Some(1));
+        assert_eq!(selection.artist.selected(), Some(1));
-        assert_eq!(selection.artist.album.track.state.list.selected(), Some(0));
+        assert_eq!(selection.artist.album.selected(), Some(1));
+        assert_eq!(selection.artist.album.track.selected(), Some(0));
 
         selection.increment_category();
         assert_eq!(selection.active, Category::Track);
-        assert_eq!(selection.artist.state.list.selected(), Some(1));
+        assert_eq!(selection.selected(), Some(0));
-        assert_eq!(selection.artist.album.state.list.selected(), Some(1));
+        assert_eq!(selection.artist.selected(), Some(1));
-        assert_eq!(selection.artist.album.track.state.list.selected(), Some(0));
+        assert_eq!(selection.artist.album.selected(), Some(1));
+        assert_eq!(selection.artist.album.track.selected(), Some(0));
 
         selection.increment_selection(&COLLECTION, Delta::Line);
         assert_eq!(selection.active, Category::Track);
-        assert_eq!(selection.artist.state.list.selected(), Some(1));
+        assert_eq!(selection.selected(), Some(1));
-        assert_eq!(selection.artist.album.state.list.selected(), Some(1));
+        assert_eq!(selection.artist.selected(), Some(1));
-        assert_eq!(selection.artist.album.track.state.list.selected(), Some(1));
+        assert_eq!(selection.artist.album.selected(), Some(1));
+        assert_eq!(selection.artist.album.track.selected(), Some(1));
 
         selection.increment_category();
         assert_eq!(selection.active, Category::Track);
-        assert_eq!(selection.artist.state.list.selected(), Some(1));
+        assert_eq!(selection.selected(), Some(1));
-        assert_eq!(selection.artist.album.state.list.selected(), Some(1));
+        assert_eq!(selection.artist.selected(), Some(1));
-        assert_eq!(selection.artist.album.track.state.list.selected(), Some(1));
+        assert_eq!(selection.artist.album.selected(), Some(1));
+        assert_eq!(selection.artist.album.track.selected(), Some(1));
 
         selection.decrement_selection(&COLLECTION, Delta::Line);
         assert_eq!(selection.active, Category::Track);
-        assert_eq!(selection.artist.state.list.selected(), Some(1));
+        assert_eq!(selection.selected(), Some(0));
-        assert_eq!(selection.artist.album.state.list.selected(), Some(1));
+        assert_eq!(selection.artist.selected(), Some(1));
-        assert_eq!(selection.artist.album.track.state.list.selected(), Some(0));
+        assert_eq!(selection.artist.album.selected(), Some(1));
+        assert_eq!(selection.artist.album.track.selected(), Some(0));
 
         selection.increment_selection(&COLLECTION, Delta::Line);
         selection.decrement_category();
         assert_eq!(selection.active, Category::Album);
-        assert_eq!(selection.artist.state.list.selected(), Some(1));
+        assert_eq!(selection.selected(), Some(1));
-        assert_eq!(selection.artist.album.state.list.selected(), Some(1));
+        assert_eq!(selection.artist.selected(), Some(1));
-        assert_eq!(selection.artist.album.track.state.list.selected(), Some(1));
+        assert_eq!(selection.artist.album.selected(), Some(1));
+        assert_eq!(selection.artist.album.track.selected(), Some(1));
 
         selection.decrement_selection(&COLLECTION, Delta::Line);
         assert_eq!(selection.active, Category::Album);
-        assert_eq!(selection.artist.state.list.selected(), Some(1));
+        assert_eq!(selection.selected(), Some(0));
-        assert_eq!(selection.artist.album.state.list.selected(), Some(0));
+        assert_eq!(selection.artist.selected(), Some(1));
-        assert_eq!(selection.artist.album.track.state.list.selected(), Some(0));
+        assert_eq!(selection.artist.album.selected(), Some(0));
+        assert_eq!(selection.artist.album.track.selected(), Some(0));
 
         selection.increment_selection(&COLLECTION, Delta::Line);
         selection.decrement_category();
         assert_eq!(selection.active, Category::Artist);
-        assert_eq!(selection.artist.state.list.selected(), Some(1));
+        assert_eq!(selection.selected(), Some(1));
-        assert_eq!(selection.artist.album.state.list.selected(), Some(1));
+        assert_eq!(selection.artist.selected(), Some(1));
-        assert_eq!(selection.artist.album.track.state.list.selected(), Some(0));
+        assert_eq!(selection.artist.album.selected(), Some(1));
+        assert_eq!(selection.artist.album.track.selected(), Some(0));
 
         selection.decrement_selection(&COLLECTION, Delta::Line);
         assert_eq!(selection.active, Category::Artist);
-        assert_eq!(selection.artist.state.list.selected(), Some(0));
+        assert_eq!(selection.selected(), Some(0));
-        assert_eq!(selection.artist.album.state.list.selected(), Some(0));
+        assert_eq!(selection.artist.selected(), Some(0));
-        assert_eq!(selection.artist.album.track.state.list.selected(), Some(0));
+        assert_eq!(selection.artist.album.selected(), Some(0));
+        assert_eq!(selection.artist.album.track.selected(), Some(0));
 
         selection.increment_category();
         selection.increment_selection(&COLLECTION, Delta::Line);
@@ -314,8 +381,9 @@ mod tests {
         selection.decrement_selection(&COLLECTION, Delta::Line);
         selection.decrement_category();
         assert_eq!(selection.active, Category::Artist);
-        assert_eq!(selection.artist.state.list.selected(), Some(0));
+        assert_eq!(selection.selected(), Some(0));
-        assert_eq!(selection.artist.album.state.list.selected(), Some(1));
+        assert_eq!(selection.artist.selected(), Some(0));
-        assert_eq!(selection.artist.album.track.state.list.selected(), Some(0));
+        assert_eq!(selection.artist.album.selected(), Some(1));
+        assert_eq!(selection.artist.album.track.selected(), Some(0));
     }
 }

src/tui/app/selection/track.rs

@@ -118,35 +118,53 @@ mod tests {
     use super::*;
 
     #[test]
-    fn track_selection() {
+    fn track_select() {
+        let tracks = &COLLECTION[0].albums[0].tracks;
+        assert!(tracks.len() > 1);
+
+        let mut sel = TrackSelection::initialise(tracks);
+        assert_eq!(sel.selected(), Some(0));
+
+        sel.select(tracks, None);
+        assert_eq!(sel.selected(), None);
+
+        sel.select(tracks, Some(tracks.len()));
+        assert_eq!(sel.selected(), Some(tracks.len() - 1));
+
+        sel.reset(tracks);
+        assert_eq!(sel.selected(), Some(0));
+    }
+
+    #[test]
+    fn track_delta_line() {
         let tracks = &COLLECTION[0].albums[0].tracks;
         assert!(tracks.len() > 1);
 
         let mut empty = TrackSelection::initialise(&[]);
-        assert_eq!(empty.state.list.selected(), None);
+        assert_eq!(empty.selected(), None);
 
         empty.increment(tracks, Delta::Line);
-        assert_eq!(empty.state.list.selected(), None);
+        assert_eq!(empty.selected(), None);
 
         empty.decrement(tracks, Delta::Line);
-        assert_eq!(empty.state.list.selected(), None);
+        assert_eq!(empty.selected(), None);
 
         let mut sel = TrackSelection::initialise(tracks);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
 
         sel.decrement(tracks, Delta::Line);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
 
         sel.increment(tracks, Delta::Line);
-        assert_eq!(sel.state.list.selected(), Some(1));
+        assert_eq!(sel.selected(), Some(1));
 
         sel.decrement(tracks, Delta::Line);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
 
         for _ in 0..(tracks.len() + 5) {
             sel.increment(tracks, Delta::Line);
         }
-        assert_eq!(sel.state.list.selected(), Some(tracks.len() - 1));
+        assert_eq!(sel.selected(), Some(tracks.len() - 1));
     }
 
     #[test]
@@ -155,27 +173,27 @@ mod tests {
         assert!(tracks.len() > 1);
 
         let empty = TrackSelection::initialise(&[]);
-        assert_eq!(empty.state.list.selected(), None);
+        assert_eq!(empty.selected(), None);
 
         let mut sel = TrackSelection::initialise(tracks);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
 
         assert!(tracks.len() >= 4);
         sel.state.height = 3;
 
         sel.decrement(tracks, Delta::Page);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
 
         sel.increment(tracks, Delta::Page);
-        assert_eq!(sel.state.list.selected(), Some(2));
+        assert_eq!(sel.selected(), Some(2));
 
         sel.decrement(tracks, Delta::Page);
-        assert_eq!(sel.state.list.selected(), Some(0));
+        assert_eq!(sel.selected(), Some(0));
 
         for _ in 0..(tracks.len() + 5) {
             sel.increment(tracks, Delta::Page);
         }
-        assert_eq!(sel.state.list.selected(), Some(tracks.len() - 1));
+        assert_eq!(sel.selected(), Some(tracks.len() - 1));
     }
 
     #[test]