Unit test the new overlay

src/tui/ui.rs

@@ -198,15 +198,18 @@ impl<'a, 'b> ArtistState<'a, 'b> {
     }
 }
 
+struct InfoOverlay;
+
+impl InfoOverlay {
+    const ITEM_INDENT: &'static str = "   ";
+    const LIST_INDENT: &'static str = "     - ";
+}
+
 struct ArtistOverlay<'a> {
     properties: Paragraph<'a>,
 }
 
 impl<'a> ArtistOverlay<'a> {
-    fn opt_opt_to_str<S: AsRef<str> + ?Sized>(opt: Option<Option<&S>>) -> &str {
-        opt.flatten().map(|item| item.as_ref()).unwrap_or("")
-    }
-
     fn opt_hashmap_to_string<K: Ord + AsRef<str>, T: AsRef<str>>(
         opt_map: Option<&HashMap<K, Vec<T>>>,
         item_indent: &str,
@@ -254,8 +257,8 @@ impl<'a> ArtistOverlay<'a> {
     fn new(artists: &'a [Artist], state: &ListState) -> ArtistOverlay<'a> {
         let artist = state.selected().map(|i| &artists[i]);
 
-        let item_indent = "   ";
-        let list_indent = "     - ";
+        let item_indent = InfoOverlay::ITEM_INDENT;
+        let list_indent = InfoOverlay::LIST_INDENT;
 
         let double_item_indent = format!("{item_indent}{item_indent}");
         let double_list_indent = format!("{item_indent}{list_indent}");
@@ -265,7 +268,9 @@ impl<'a> ArtistOverlay<'a> {
              MusicBrainz: {}\n{item_indent}\
              Properties: {}",
             artist.map(|a| a.id.name.as_str()).unwrap_or(""),
-            Self::opt_opt_to_str(artist.map(|a| a.musicbrainz.as_ref().map(|mb| mb.url()))),
+            artist
+                .and_then(|a| a.musicbrainz.as_ref().map(|mb| mb.url().as_str()))
+                .unwrap_or(""),
             Self::opt_hashmap_to_string(
                 artist.map(|a| &a.properties),
                 &double_item_indent,
@@ -413,6 +418,29 @@ impl<'a, 'b> AlbumState<'a, 'b> {
     }
 }
 
+struct AlbumOverlay<'a> {
+    properties: Paragraph<'a>,
+}
+
+impl<'a> AlbumOverlay<'a> {
+    fn new(albums: &'a [Album], state: &ListState) -> AlbumOverlay<'a> {
+        let album = state.selected().map(|i| &albums[i]);
+
+        let item_indent = InfoOverlay::ITEM_INDENT;
+
+        let properties = Paragraph::new(format!(
+            "Album: {}\n\n{item_indent}\
+             MusicBrainz: {}",
+            album.map(|a| a.id.title.as_str()).unwrap_or(""),
+            album
+                .and_then(|a| a.musicbrainz.as_ref().map(|mb| mb.url().as_str()))
+                .unwrap_or(""),
+        ));
+
+        AlbumOverlay { properties }
+    }
+}
+
 struct TrackState<'a, 'b> {
     active: bool,
     list: List<'a>,
@@ -750,9 +778,18 @@ impl Ui {
     fn render_info_overlay(artists: &Collection, selection: &mut Selection, frame: &mut Frame) {
         let area = OverlayBuilder::default().build(frame.size());
 
-        let artist_overlay = ArtistOverlay::new(artists, &selection.widget_state_artist().list);
-
-        Self::render_overlay_widget("Artist", artist_overlay.properties, area, false, frame);
+        if selection.category() == Category::Artist {
+            let artist_overlay = ArtistOverlay::new(artists, &selection.widget_state_artist().list);
+            Self::render_overlay_widget("Artist", artist_overlay.properties, area, false, frame);
+        } else {
+            let no_albums: Vec<Album> = vec![];
+            let albums = selection
+                .state_album(artists)
+                .map(|st| st.list)
+                .unwrap_or_else(|| &no_albums);
+            let album_overlay = AlbumOverlay::new(albums, &selection.widget_state_album().list);
+            Self::render_overlay_widget("Album", album_overlay.properties, area, false, frame);
+        }
     }
 
     fn render_reload_overlay(frame: &mut Frame) {
@@ -880,6 +917,68 @@ mod tests {
         assert_eq!(AlbumState::display_date(&date, &AlbumSeq(5)), "1990 (5)");
     }
 
+    #[test]
+    fn display_primary_type() {
+        assert_eq!(
+            AlbumState::display_primary_type(&AlbumPrimaryType::Album),
+            "Album"
+        );
+        assert_eq!(
+            AlbumState::display_primary_type(&AlbumPrimaryType::Single),
+            "Single"
+        );
+        assert_eq!(
+            AlbumState::display_primary_type(&AlbumPrimaryType::Ep),
+            "EP"
+        );
+        assert_eq!(
+            AlbumState::display_primary_type(&AlbumPrimaryType::Broadcast),
+            "Broadcast"
+        );
+        assert_eq!(
+            AlbumState::display_primary_type(&AlbumPrimaryType::Other),
+            "Other"
+        );
+    }
+
+    #[test]
+    fn display_secondary_types() {
+        assert_eq!(
+            AlbumState::display_secondary_types(&vec![
+                AlbumSecondaryType::Compilation,
+                AlbumSecondaryType::Soundtrack,
+                AlbumSecondaryType::Spokenword,
+                AlbumSecondaryType::Interview,
+                AlbumSecondaryType::Audiobook,
+                AlbumSecondaryType::AudioDrama,
+                AlbumSecondaryType::Live,
+                AlbumSecondaryType::Remix,
+                AlbumSecondaryType::DjMix,
+                AlbumSecondaryType::MixtapeStreet,
+                AlbumSecondaryType::Demo,
+                AlbumSecondaryType::FieldRecording,
+            ]),
+            "Compilation, Soundtrack, Spokenword, Interview, Audiobook, Audio drama, Live, Remix, \
+             DJ-mix, Mixtape/Street, Demo, Field recording"
+        );
+    }
+
+    #[test]
+    fn display_type() {
+        assert_eq!(AlbumState::display_type(&None, &vec![]), "");
+        assert_eq!(
+            AlbumState::display_type(&Some(AlbumPrimaryType::Album), &vec![]),
+            "Album"
+        );
+        assert_eq!(
+            AlbumState::display_type(
+                &Some(AlbumPrimaryType::Album),
+                &vec![AlbumSecondaryType::Live, AlbumSecondaryType::Compilation]
+            ),
+            "Album (Live, Compilation)"
+        );
+    }
+
     #[test]
     fn display_album_status() {
         assert_eq!(AlbumState::display_album_status(&AlbumStatus::None), "None");