Move some tests around

src/tui/app/app.rs

@@ -1,3 +1,4 @@
+// FIXME: combine with mod state into a mod machine
 #![allow(clippy::module_inception)]
 
 use crate::tui::{

src/tui/app/mod.rs

@@ -116,3 +116,14 @@ impl<BS, IS, RS, SS, ES, CS> AppState<BS, IS, RS, SS, ES, CS> {
         matches!(self, AppState::Search(_))
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn app_is_state() {
+        let state = AppPublicState::Search("get rekt");
+        assert!(state.is_search());
+    }
+}

src/tui/app/selection.rs

@@ -496,9 +496,9 @@ impl TrackSelection {
 }
 
 pub struct ListSelection {
-    artist: ListState,
+    pub artist: ListState,
-    album: ListState,
+    pub album: ListState,
-    track: ListState,
+    pub track: ListState,
 }
 
 impl ListSelection {

src/tui/app/state/browse.rs

@@ -91,3 +91,59 @@ impl<MH: IMusicHoard> IAppInteractBrowse for AppMachine<MH, AppBrowse> {
         self.into()
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::tui::app::{
+        state::tests::{inner, music_hoard},
+        IAppInteract,
+    };
+
+    use super::*;
+
+    #[test]
+    fn save_and_quit() {
+        let mut music_hoard = music_hoard(vec![]);
+
+        music_hoard
+            .expect_save_to_database()
+            .times(1)
+            .return_once(|| Ok(()));
+
+        let browse = AppMachine::browse(inner(music_hoard));
+
+        let app = browse.save_and_quit();
+        assert!(!app.is_running());
+        app.unwrap_browse();
+    }
+
+    #[test]
+    fn save_and_quit_error() {
+        let mut music_hoard = music_hoard(vec![]);
+
+        music_hoard
+            .expect_save_to_database()
+            .times(1)
+            .return_once(|| Err(musichoard::Error::DatabaseError(String::from("get rekt"))));
+
+        let browse = AppMachine::browse(inner(music_hoard));
+
+        let app = browse.save_and_quit();
+        assert!(app.is_running());
+        app.unwrap_error();
+    }
+
+    #[test]
+    fn show_info_overlay() {
+        let browse = AppMachine::browse(inner(music_hoard(vec![])));
+        let app = browse.show_info_overlay();
+        app.unwrap_info();
+    }
+
+    #[test]
+    fn show_reload_menu() {
+        let browse = AppMachine::browse(inner(music_hoard(vec![])));
+        let app = browse.show_reload_menu();
+        app.unwrap_reload();
+    }
+}

src/tui/app/state/critical.rs

@@ -44,3 +44,17 @@ impl<MH: IMusicHoard> IAppInteractCritical for AppMachine<MH, AppCritical> {
         self.into()
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::tui::app::state::tests::{music_hoard, inner};
+
+    use super::*;
+
+    #[test]
+    fn no_op() {
+        let critical = AppMachine::critical(inner(music_hoard(vec![])), "get rekt");
+        let app = critical.no_op();
+        app.unwrap_critical();
+    }
+}

src/tui/app/state/error.rs

@@ -44,3 +44,17 @@ impl<MH: IMusicHoard> IAppInteractError for AppMachine<MH, AppError> {
         AppMachine::browse(self.inner).into()
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::tui::app::state::tests::{inner, music_hoard};
+
+    use super::*;
+
+    #[test]
+    fn dismiss_error() {
+        let error = AppMachine::error(inner(music_hoard(vec![])), "get rekt");
+        let app = error.dismiss_error();
+        app.unwrap_browse();
+    }
+}

src/tui/app/state/info.rs

@@ -44,3 +44,17 @@ impl<MH: IMusicHoard> IAppInteractInfo for AppMachine<MH, AppInfo> {
         self.into()
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::tui::app::state::tests::{music_hoard, inner};
+
+    use super::*;
+
+    #[test]
+    fn hide_info_overlay() {
+        let info = AppMachine::info(inner(music_hoard(vec![])));
+        let app = info.hide_info_overlay();
+        app.unwrap_browse();
+    }
+}

src/tui/app/state/mod.rs

@@ -69,8 +69,7 @@ mod tests {
         app::{
             app::App,
             selection::{Category, Delta},
-            AppPublicState, AppState, IAppInteract, IAppInteractBrowse, IAppInteractError,
+            AppState, IAppInteract, IAppInteractBrowse,
-            IAppInteractInfo, IAppInteractReload, IAppInteractSearch,
         },
         lib::MockIMusicHoard,
         testmod::COLLECTION,
@@ -79,42 +78,42 @@ mod tests {
     use super::*;
 
     impl<BS, IS, RS, SS, ES, CS> AppState<BS, IS, RS, SS, ES, CS> {
-        fn unwrap_browse(self) -> BS {
+        pub fn unwrap_browse(self) -> BS {
             match self {
                 AppState::Browse(browse) => browse,
                 _ => panic!(),
             }
         }
 
-        fn unwrap_info(self) -> IS {
+        pub fn unwrap_info(self) -> IS {
             match self {
                 AppState::Info(info) => info,
                 _ => panic!(),
             }
         }
 
-        fn unwrap_reload(self) -> RS {
+        pub fn unwrap_reload(self) -> RS {
             match self {
                 AppState::Reload(reload) => reload,
                 _ => panic!(),
             }
         }
 
-        fn unwrap_search(self) -> SS {
+        pub fn unwrap_search(self) -> SS {
             match self {
                 AppState::Search(search) => search,
                 _ => panic!(),
             }
         }
 
-        fn unwrap_error(self) -> ES {
+        pub fn unwrap_error(self) -> ES {
             match self {
                 AppState::Error(error) => error,
                 _ => panic!(),
             }
         }
 
-        fn unwrap_critical(self) -> CS {
+        pub fn unwrap_critical(self) -> CS {
             match self {
                 AppState::Critical(critical) => critical,
                 _ => panic!(),
@@ -122,7 +121,7 @@ mod tests {
         }
     }
 
-    fn music_hoard(collection: Collection) -> MockIMusicHoard {
+    fn music_hoard_app(collection: Collection) -> MockIMusicHoard {
         let mut music_hoard = MockIMusicHoard::new();
 
         music_hoard
@@ -138,58 +137,20 @@ mod tests {
         music_hoard
     }
 
-    #[test]
+    pub fn music_hoard(collection: Collection) -> MockIMusicHoard {
-    fn app_is_state() {
+        let mut music_hoard = MockIMusicHoard::new();
-        let state = AppPublicState::Search("get rekt");
+        music_hoard.expect_get_collection().return_const(collection);
-        assert!(state.is_search());
-    }
-
-    #[test]
-    fn running_quit() {
-        let mut music_hoard = music_hoard(COLLECTION.to_owned());
 
         music_hoard
-            .expect_save_to_database()
-            .times(1)
-            .return_once(|| Ok(()));
-
-        let app = App::new(music_hoard);
-        assert!(app.is_running());
-
-        let browse = app.unwrap_browse();
-
-        let app = browse.save_and_quit();
-        assert!(!app.is_running());
     }
 
-    #[test]
+    pub fn inner(music_hoard: MockIMusicHoard) -> AppInner<MockIMusicHoard> {
-    fn error_quit() {
+        AppInner::new(music_hoard)
-        let mut music_hoard = music_hoard(COLLECTION.to_owned());
-
-        music_hoard
-            .expect_save_to_database()
-            .times(1)
-            .return_once(|| Ok(()));
-
-        let app = App::new(music_hoard);
-        assert!(app.is_running());
-
-        let app = App::Error(AppMachine::error(
-            app.unwrap_browse().inner,
-            String::from("get rekt"),
-        ));
-
-        let error = app.unwrap_error();
-
-        let browse = error.dismiss_error().unwrap_browse();
-
-        let app = browse.save_and_quit();
-        assert!(!app.is_running());
     }
 
     #[test]
     fn running_force_quit() {
-        let app = App::new(music_hoard(COLLECTION.to_owned()));
+        let app = App::new(music_hoard_app(COLLECTION.to_owned()));
         assert!(app.is_running());
 
         let app = app.force_quit();
@@ -198,46 +159,15 @@ mod tests {
 
     #[test]
     fn error_force_quit() {
-        let app = App::new(music_hoard(COLLECTION.to_owned()));
+        let mut app = App::new(music_hoard_app(COLLECTION.to_owned()));
         assert!(app.is_running());
 
-        let app = App::Error(AppMachine::error(
+        app = AppMachine::error(app.unwrap_browse().inner, "get rekt").into();
-            app.unwrap_browse().inner,
-            String::from("get rekt"),
-        ));
 
-        let app = app.force_quit();
+        app = app.force_quit();
         assert!(!app.is_running());
     }
 
-    #[test]
-    fn save() {
-        let mut music_hoard = music_hoard(COLLECTION.to_owned());
-
-        music_hoard
-            .expect_save_to_database()
-            .times(1)
-            .return_once(|| Ok(()));
-
-        let browse = App::new(music_hoard).unwrap_browse();
-
-        browse.save_and_quit().unwrap_browse();
-    }
-
-    #[test]
-    fn save_error() {
-        let mut music_hoard = music_hoard(COLLECTION.to_owned());
-
-        music_hoard
-            .expect_save_to_database()
-            .times(1)
-            .return_once(|| Err(musichoard::Error::DatabaseError(String::from("get rekt"))));
-
-        let browse = App::new(music_hoard).unwrap_browse();
-
-        browse.save_and_quit().unwrap_error();
-    }
-
     #[test]
     fn init_error() {
         let mut music_hoard = MockIMusicHoard::new();
@@ -256,7 +186,7 @@ mod tests {
 
     #[test]
     fn modifiers() {
-        let app = App::new(music_hoard(COLLECTION.to_owned()));
+        let app = App::new(music_hoard_app(COLLECTION.to_owned()));
         assert!(app.is_running());
 
         let browse = app.unwrap_browse();
@@ -363,7 +293,7 @@ mod tests {
         let mut collection = COLLECTION.to_owned();
         collection[0].albums[0].tracks = vec![];
 
-        let app = App::new(music_hoard(collection));
+        let app = App::new(music_hoard_app(collection));
         assert!(app.is_running());
 
         let browse = app.unwrap_browse();
@@ -397,7 +327,7 @@ mod tests {
         let mut collection = COLLECTION.to_owned();
         collection[0].albums = vec![];
 
-        let app = App::new(music_hoard(collection));
+        let app = App::new(music_hoard_app(collection));
         assert!(app.is_running());
 
         let browse = app.unwrap_browse();
@@ -443,7 +373,7 @@ mod tests {
 
     #[test]
     fn no_artists() {
-        let app = App::new(music_hoard(vec![]));
+        let app = App::new(music_hoard_app(vec![]));
         assert!(app.is_running());
 
         let browse = app.unwrap_browse();
@@ -500,281 +430,4 @@ mod tests {
         assert_eq!(selection.artist.album.state.list.selected(), None);
         assert_eq!(selection.artist.album.track.state.list.selected(), None);
     }
-
-    #[test]
-    fn info_overlay() {
-        let browse = App::new(music_hoard(COLLECTION.to_owned())).unwrap_browse();
-
-        let info = browse.show_info_overlay().unwrap_info();
-
-        info.hide_info_overlay().unwrap_browse();
-    }
-
-    #[test]
-    fn reload_hide_menu() {
-        let browse = App::new(music_hoard(COLLECTION.to_owned())).unwrap_browse();
-
-        let reload = browse.show_reload_menu().unwrap_reload();
-
-        reload.hide_reload_menu().unwrap_browse();
-    }
-
-    #[test]
-    fn reload_database() {
-        let mut music_hoard = music_hoard(COLLECTION.to_owned());
-
-        music_hoard
-            .expect_load_from_database()
-            .times(1)
-            .return_once(|| Ok(()));
-
-        let browse = App::new(music_hoard).unwrap_browse();
-
-        let reload = browse.show_reload_menu().unwrap_reload();
-
-        reload.reload_database().unwrap_browse();
-    }
-
-    #[test]
-    fn reload_library() {
-        let mut music_hoard = music_hoard(COLLECTION.to_owned());
-
-        music_hoard
-            .expect_rescan_library()
-            .times(1)
-            .return_once(|| Ok(()));
-
-        let browse = App::new(music_hoard).unwrap_browse();
-
-        let reload = browse.show_reload_menu().unwrap_reload();
-
-        reload.reload_library().unwrap_browse();
-    }
-
-    #[test]
-    fn reload_error() {
-        let mut music_hoard = music_hoard(COLLECTION.to_owned());
-
-        music_hoard
-            .expect_load_from_database()
-            .times(1)
-            .return_once(|| Err(musichoard::Error::DatabaseError(String::from("get rekt"))));
-
-        let browse = App::new(music_hoard).unwrap_browse();
-
-        let reload = browse.show_reload_menu().unwrap_reload();
-
-        let error = reload.reload_database().unwrap_error();
-
-        error.dismiss_error().unwrap_browse();
-    }
-
-    #[test]
-    fn search() {
-        let browse = App::new(music_hoard(COLLECTION.to_owned())).unwrap_browse();
-
-        let browse = browse.increment_selection(Delta::Line).unwrap_browse();
-        let browse = browse.increment_category().unwrap_browse();
-
-        assert_eq!(browse.inner.selection.active, Category::Album);
-        assert_eq!(browse.inner.selection.artist.state.list.selected(), Some(1));
-
-        let search = browse.begin_search().unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(0));
-
-        let search = search.append_character('a').unwrap_search();
-        let search = search.append_character('l').unwrap_search();
-        let search = search.append_character('b').unwrap_search();
-        let search = search.append_character('u').unwrap_search();
-        let search = search.append_character('m').unwrap_search();
-        let search = search.append_character('_').unwrap_search();
-        let search = search.append_character('a').unwrap_search();
-        let search = search.append_character('r').unwrap_search();
-        let search = search.append_character('t').unwrap_search();
-        let search = search.append_character('i').unwrap_search();
-        let search = search.append_character('s').unwrap_search();
-        let search = search.append_character('t').unwrap_search();
-        let search = search.append_character(' ').unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(0));
-
-        let search = search.append_character('\'').unwrap_search();
-        let search = search.append_character('c').unwrap_search();
-        let search = search.append_character('\'').unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(2));
-
-        let search = search.step_back().unwrap_search();
-        let search = search.step_back().unwrap_search();
-        let search = search.step_back().unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(0));
-
-        let search = search.append_character('\'').unwrap_search();
-        let search = search.append_character('b').unwrap_search();
-        let search = search.append_character('\'').unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(1));
-
-        let browse = search.finish_search().unwrap_browse();
-
-        assert_eq!(browse.inner.selection.active, Category::Album);
-        assert_eq!(browse.inner.selection.artist.state.list.selected(), Some(1));
-    }
-
-    #[test]
-    fn search_next() {
-        let browse = App::new(music_hoard(COLLECTION.to_owned())).unwrap_browse();
-
-        let browse = browse.increment_selection(Delta::Line).unwrap_browse();
-        let browse = browse.increment_category().unwrap_browse();
-
-        assert_eq!(browse.inner.selection.active, Category::Album);
-        assert_eq!(browse.inner.selection.artist.state.list.selected(), Some(1));
-
-        let search = browse.begin_search().unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(0));
-
-        let search = search.step_back().unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(0));
-
-        let search = search.append_character('a').unwrap_search();
-
-        let search = search.search_next().unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(1));
-
-        let search = search.search_next().unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(2));
-
-        let search = search.search_next().unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(3));
-
-        let search = search.search_next().unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(3));
-
-        let search = search.step_back().unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(3));
-
-        let search = search.step_back().unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(2));
-
-        let search = search.step_back().unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(1));
-
-        let search = search.step_back().unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(0));
-
-        let search = search.step_back().unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(0));
-    }
-
-    #[test]
-    fn cancel_search() {
-        let browse = App::new(music_hoard(COLLECTION.to_owned())).unwrap_browse();
-
-        let browse = browse.increment_selection(Delta::Line).unwrap_browse();
-        let browse = browse.increment_category().unwrap_browse();
-
-        assert_eq!(browse.inner.selection.active, Category::Album);
-        assert_eq!(browse.inner.selection.artist.state.list.selected(), Some(1));
-
-        let search = browse.begin_search().unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(0));
-
-        let search = search.append_character('a').unwrap_search();
-        let search = search.append_character('l').unwrap_search();
-        let search = search.append_character('b').unwrap_search();
-        let search = search.append_character('u').unwrap_search();
-        let search = search.append_character('m').unwrap_search();
-        let search = search.append_character('_').unwrap_search();
-        let search = search.append_character('a').unwrap_search();
-        let search = search.append_character('r').unwrap_search();
-        let search = search.append_character('t').unwrap_search();
-        let search = search.append_character('i').unwrap_search();
-        let search = search.append_character('s').unwrap_search();
-        let search = search.append_character('t').unwrap_search();
-        let search = search.append_character(' ').unwrap_search();
-        let search = search.append_character('\'').unwrap_search();
-        let search = search.append_character('c').unwrap_search();
-        let search = search.append_character('\'').unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(2));
-
-        let browse = search.cancel_search().unwrap_browse();
-
-        assert_eq!(browse.inner.selection.active, Category::Album);
-        assert_eq!(browse.inner.selection.artist.state.list.selected(), Some(1));
-    }
-
-    #[test]
-    fn empty_search() {
-        let browse = App::new(music_hoard(vec![])).unwrap_browse();
-
-        let browse = browse.increment_selection(Delta::Line).unwrap_browse();
-        let browse = browse.increment_category().unwrap_browse();
-
-        assert_eq!(browse.inner.selection.active, Category::Album);
-        assert_eq!(browse.inner.selection.artist.state.list.selected(), None);
-
-        let search = browse.begin_search().unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), None);
-
-        let search = search.append_character('a').unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), None);
-
-        let search = search.search_next().unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), None);
-
-        let search = search.step_back().unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), None);
-
-        let search = search.step_back().unwrap_search();
-
-        assert_eq!(search.inner.selection.active, Category::Album);
-        assert_eq!(search.inner.selection.artist.state.list.selected(), None);
-
-        let browse = search.cancel_search().unwrap_browse();
-
-        assert_eq!(browse.inner.selection.active, Category::Album);
-        assert_eq!(browse.inner.selection.artist.state.list.selected(), None);
-    }
 }

src/tui/app/state/reload.rs

@@ -80,3 +80,60 @@ impl<MH: IMusicHoard> IAppInteractReloadPrivate<MH> for AppMachine<MH, AppReload
         }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::tui::app::state::tests::{inner, music_hoard};
+
+    use super::*;
+
+    #[test]
+    fn hide_reload_menu() {
+        let reload = AppMachine::reload(inner(music_hoard(vec![])));
+        let app = reload.hide_reload_menu();
+        app.unwrap_browse();
+    }
+
+
+    #[test]
+    fn reload_database() {
+        let mut music_hoard = music_hoard(vec![]);
+
+        music_hoard
+            .expect_load_from_database()
+            .times(1)
+            .return_once(|| Ok(()));
+
+        let reload = AppMachine::reload(inner(music_hoard));
+        let app = reload.reload_database();
+        app.unwrap_browse();
+    }
+
+    #[test]
+    fn reload_library() {
+        let mut music_hoard = music_hoard(vec![]);
+
+        music_hoard
+            .expect_rescan_library()
+            .times(1)
+            .return_once(|| Ok(()));
+
+        let reload = AppMachine::reload(inner(music_hoard));
+        let app = reload.reload_library();
+        app.unwrap_browse();
+    }
+
+    #[test]
+    fn reload_error() {
+        let mut music_hoard = music_hoard(vec![]);
+
+        music_hoard
+            .expect_load_from_database()
+            .times(1)
+            .return_once(|| Err(musichoard::Error::DatabaseError(String::from("get rekt"))));
+
+        let reload = AppMachine::reload(inner(music_hoard));
+        let app = reload.reload_database();
+        app.unwrap_error();
+    }
+}

src/tui/app/state/search.rs

@@ -98,3 +98,151 @@ impl<MH: IMusicHoard> IAppInteractSearch for AppMachine<MH, AppSearch> {
         self.into()
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use ratatui::widgets::ListState;
+
+    use crate::tui::{
+        app::state::tests::{inner, music_hoard},
+        testmod::COLLECTION,
+    };
+
+    use super::*;
+
+    fn orig(index: Option<usize>) -> ListSelection {
+        let mut artist = ListState::default();
+        artist.select(index);
+
+        ListSelection {
+            artist,
+            album: ListState::default(),
+            track: ListState::default(),
+        }
+    }
+
+    #[test]
+    fn search() {
+        let search = AppMachine::search(inner(music_hoard(COLLECTION.to_owned())), orig(Some(2)));
+        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(0));
+
+        let search = search.append_character('a').unwrap_search();
+        let search = search.append_character('l').unwrap_search();
+        let search = search.append_character('b').unwrap_search();
+        let search = search.append_character('u').unwrap_search();
+        let search = search.append_character('m').unwrap_search();
+        let search = search.append_character('_').unwrap_search();
+        let search = search.append_character('a').unwrap_search();
+        let search = search.append_character('r').unwrap_search();
+        let search = search.append_character('t').unwrap_search();
+        let search = search.append_character('i').unwrap_search();
+        let search = search.append_character('s').unwrap_search();
+        let search = search.append_character('t').unwrap_search();
+        let search = search.append_character(' ').unwrap_search();
+        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(0));
+
+        let search = search.append_character('\'').unwrap_search();
+        let search = search.append_character('c').unwrap_search();
+        let search = search.append_character('\'').unwrap_search();
+        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(2));
+
+        let search = search.step_back().unwrap_search();
+        let search = search.step_back().unwrap_search();
+        let search = search.step_back().unwrap_search();
+        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(0));
+
+        let search = search.append_character('\'').unwrap_search();
+        let search = search.append_character('b').unwrap_search();
+        let search = search.append_character('\'').unwrap_search();
+        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(1));
+
+        let app = search.finish_search();
+        let browse = app.unwrap_browse();
+        assert_eq!(browse.inner.selection.artist.state.list.selected(), Some(1));
+    }
+
+    #[test]
+    fn search_next_step_back() {
+        let search = AppMachine::search(inner(music_hoard(COLLECTION.to_owned())), orig(Some(2)));
+        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(0));
+
+        let search = search.step_back().unwrap_search();
+        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(0));
+
+        let search = search.append_character('a').unwrap_search();
+        let search = search.search_next().unwrap_search();
+        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(1));
+
+        let search = search.search_next().unwrap_search();
+        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(2));
+
+        let search = search.search_next().unwrap_search();
+        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(3));
+
+        let search = search.search_next().unwrap_search();
+        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(3));
+
+        let search = search.step_back().unwrap_search();
+        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(3));
+
+        let search = search.step_back().unwrap_search();
+        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(2));
+
+        let search = search.step_back().unwrap_search();
+        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(1));
+
+        let search = search.step_back().unwrap_search();
+        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(0));
+
+        let search = search.step_back().unwrap_search();
+        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(0));
+    }
+
+    #[test]
+    fn cancel_search() {
+        let search = AppMachine::search(inner(music_hoard(COLLECTION.to_owned())), orig(Some(2)));
+        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(0));
+
+        let search = search.append_character('a').unwrap_search();
+        let search = search.append_character('l').unwrap_search();
+        let search = search.append_character('b').unwrap_search();
+        let search = search.append_character('u').unwrap_search();
+        let search = search.append_character('m').unwrap_search();
+        let search = search.append_character('_').unwrap_search();
+        let search = search.append_character('a').unwrap_search();
+        let search = search.append_character('r').unwrap_search();
+        let search = search.append_character('t').unwrap_search();
+        let search = search.append_character('i').unwrap_search();
+        let search = search.append_character('s').unwrap_search();
+        let search = search.append_character('t').unwrap_search();
+        let search = search.append_character(' ').unwrap_search();
+        let search = search.append_character('\'').unwrap_search();
+        let search = search.append_character('b').unwrap_search();
+        let search = search.append_character('\'').unwrap_search();
+        assert_eq!(search.inner.selection.artist.state.list.selected(), Some(1));
+
+        let browse = search.cancel_search().unwrap_browse();
+        assert_eq!(browse.inner.selection.artist.state.list.selected(), Some(2));
+    }
+
+    #[test]
+    fn empty_search() {
+        let search = AppMachine::search(inner(music_hoard(vec![])), orig(None));
+        assert_eq!(search.inner.selection.artist.state.list.selected(), None);
+
+        let search = search.append_character('a').unwrap_search();
+        assert_eq!(search.inner.selection.artist.state.list.selected(), None);
+
+        let search = search.search_next().unwrap_search();
+        assert_eq!(search.inner.selection.artist.state.list.selected(), None);
+
+        let search = search.step_back().unwrap_search();
+        assert_eq!(search.inner.selection.artist.state.list.selected(), None);
+
+        let search = search.step_back().unwrap_search();
+        assert_eq!(search.inner.selection.artist.state.list.selected(), None);
+
+        let browse = search.cancel_search().unwrap_browse();
+        assert_eq!(browse.inner.selection.artist.state.list.selected(), None);
+    }
+}