WIP: add tests

src/api.rs

@@ -189,6 +189,8 @@ pub struct PlaylistEntry {
 pub struct Playlist(pub Vec<PlaylistEntry>);
 
 pub trait GetPropertyTypeHandler: Sized {
+    // TODO: fix this
+    #[allow(async_fn_in_trait)]
     async fn get_property_generic(instance: &Mpv, property: &str) -> Result<Self, Error>;
 }
 
@@ -205,6 +207,8 @@ where
 }
 
 pub trait SetPropertyTypeHandler<T> {
+    // TODO: fix this
+    #[allow(async_fn_in_trait)]
     async fn set_property_generic(instance: &Mpv, property: &str, value: T) -> Result<(), Error>;
 }