Adding album tests (#13)

Reviewed-on: phoenix/icarus-models#13
Co-authored-by: phoenix <kundeng94@gmail.com>
Co-committed-by: phoenix <kundeng94@gmail.com>

src/album.rs

@@ -1,15 +1,29 @@
 pub mod collection {
     use serde::{Deserialize, Serialize};
+    use std::default::Default;
+
+    use std::fs::File;
+    use std::io::BufReader;
 
     fn is_set(num: &i32) -> bool {
         *num >= 0
     }
 
-    #[derive(Clone, Debug, Deserialize, Serialize)]
+    pub fn parse_album(filepath: &String) -> Result<Album, serde_json::Error> {
+        let file = File::open(filepath).expect("Failed to open file");
+        let reader = BufReader::new(file);
+
+        serde_json::from_reader(reader)
+    }
+
+    #[derive(Clone, Debug, Default, Deserialize, Serialize)]
     pub struct Album {
         #[serde(skip_serializing_if = "String::is_empty")]
         #[serde(alias = "album")]
         pub title: String,
+        #[serde(skip_serializing_if = "String::is_empty")]
+        #[serde(alias = "album_artist")]
+        pub artist: String,
         pub genre: String,
         pub year: i32,
         pub track_count: i32,
@@ -19,7 +33,7 @@ pub mod collection {
         pub tracks: Vec<Track>,
     }
 
-    #[derive(Clone, Debug, Deserialize, Serialize)]
+    #[derive(Clone, Debug, Default, Deserialize, Serialize)]
     pub struct Track {
         pub title: String,
         pub artist: String,