changes

crates/adapters/music/tests/musicbrainz_test.rs

@@ -0,0 +1,30 @@
+use music::musicbrainz::parse_first_recording;
+
+#[test]
+fn the_first_recording_is_taken_as_the_match() {
+    let body = r#"{"recordings":[
+        {"id":"f5c7e7a2-0000-4000-8000-000000000001","title":"Paranoid Android"},
+        {"id":"f5c7e7a2-0000-4000-8000-000000000002","title":"Paranoid Android (live)"}
+    ]}"#;
+
+    let recording = parse_first_recording(body).unwrap();
+
+    assert_eq!(
+        recording.value().to_string(),
+        "f5c7e7a2-0000-4000-8000-000000000001"
+    );
+}
+
+#[test]
+fn no_match_yields_nothing_rather_than_an_error() {
+    assert!(parse_first_recording(r#"{"recordings":[]}"#).is_none());
+    assert!(parse_first_recording(r#"{}"#).is_none());
+    assert!(parse_first_recording("not json").is_none());
+}
+
+#[test]
+fn a_recording_id_that_is_not_a_uuid_is_ignored() {
+    let body = r#"{"recordings":[{"id":"not-a-uuid"}]}"#;
+
+    assert!(parse_first_recording(body).is_none());
+}