wrote a test but it doesn't work...

bingus/Cargo.toml

@@ -19,3 +19,4 @@ derive-new = "0.7"
 strum = { version = "0.26", features = ["derive"] }
 derive_wrapper = "0.1"
 symphonia = { version = "0.5.4", features = ["all"] }
+project-root = "0.2.2"

bingus/src/snd/simphonia.rs

@@ -41,6 +41,15 @@ pub enum AudioOpenError {
     Symphonia(#[from] symphonia::core::errors::Error),
 }
 
+impl PartialEq for AudioOpenError {
+    fn eq(&self, other: &Self) -> bool {
+        match self {
+            AudioOpenError::Io(_) => matches!(other, AudioOpenError::Io(_)),
+            AudioOpenError::Symphonia(_) => matches!(other, AudioOpenError::Symphonia(_)),
+        }
+    }
+}
+
 impl Audio {
     pub fn open<P: AsRef<Path>>(path: P) -> Result<Audio, AudioOpenError> {
         let registry = default::get_codecs();
@@ -159,3 +168,17 @@ where
         })
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use project_root::get_project_root;
+
+    use crate::IntoDataBytes;
+
+    use super::Audio;
+
+    #[test]
+    fn open_sample_file() {
+        assert_eq!(Ok(include_bytes!("../../../testing material/sound/1938-04-30_BBC_Winston_Churchill_To_The_Royal_Academy_Of_Arts.mp3").to_vec()), Audio::open(get_project_root().expect("can't find project root!").join("testing material").join("sound").join("1938-04-30_BBC_Winston_Churchill_To_The_Royal_Academy_Of_Arts.mp3")).map(|audio| audio.into_data_bytes()));
+    }
+}