Tests: Add TagLib ID3v1 tests

tests/taglib/main.rs

@@ -6,3 +6,4 @@ mod test_apetag;
 mod test_fileref;
 mod test_flac;
 mod test_flacpicture;
+mod test_id3v1;

tests/taglib/test_id3v1.rs

@@ -0,0 +1,51 @@
+use crate::temp_file;
+
+use std::io::Seek;
+
+use lofty::id3::v1::{ID3v1Tag, GENRES};
+use lofty::mpeg::MPEGFile;
+use lofty::{Accessor, AudioFile, ParseOptions};
+
+#[test]
+#[ignore] // TODO: We probably should be stripping whitespace
+fn test_strip_whitespace() {
+	let mut file = temp_file!("tests/taglib/data/xing.mp3");
+	{
+		let mut f = MPEGFile::read_from(&mut file, ParseOptions::new()).unwrap();
+		file.rewind().unwrap();
+
+		let mut tag = ID3v1Tag::default();
+		tag.set_artist(String::from("Artist     "));
+		f.set_id3v1(tag);
+		f.save_to(&mut file).unwrap();
+	}
+	file.rewind().unwrap();
+	{
+		let f = MPEGFile::read_from(&mut file, ParseOptions::new()).unwrap();
+		assert_eq!(f.id3v1().unwrap().artist().as_deref(), Some("Artist"));
+	}
+}
+
+#[test]
+fn test_genres() {
+	assert_eq!("Darkwave", GENRES[50]);
+	assert_eq!(
+		100,
+		GENRES.iter().position(|genre| *genre == "Humour").unwrap()
+	);
+	assert!(GENRES.contains(&"Heavy Metal"));
+	assert_eq!(
+		79,
+		GENRES
+			.iter()
+			.position(|genre| *genre == "Hard Rock")
+			.unwrap()
+	);
+}
+
+#[test]
+#[ignore]
+fn test_renamed_genres() {
+	// Marker test, this covers a change where TagLib deviated from the list of genres available on Wikipedia.
+	// For now, Lofty has no reason to change.
+}