Tests: Add TagLib Opus tests

Author: Serial-ATA

tests/taglib/main.rs

@@ -15,3 +15,4 @@ mod test_speex;
 mod test_wav;
 mod test_wavpack;
 mod test_xiphcomment;
+mod test_opus;

tests/taglib/test_opus.rs

@@ -0,0 +1,59 @@
+use crate::temp_file;
+use lofty::ogg::OpusFile;
+use lofty::{Accessor, AudioFile, ParseOptions};
+use std::io::Seek;
+
+#[test]
+fn test_audio_properties() {
+	let mut file = temp_file!("tests/taglib/data/correctness_gain_silent_output.opus");
+	let f = OpusFile::read_from(&mut file, ParseOptions::new()).unwrap();
+	assert_eq!(f.properties().duration().as_secs(), 7);
+	assert_eq!(f.properties().duration().as_millis(), 7737);
+	assert_eq!(f.properties().audio_bitrate(), 36);
+	assert_eq!(f.properties().channels(), 1);
+	assert_eq!(f.properties().input_sample_rate(), 48000);
+	assert_eq!(f.properties().version(), 1);
+}
+
+#[test]
+fn test_read_comments() {
+	let mut file = temp_file!("tests/taglib/data/correctness_gain_silent_output.opus");
+	let f = OpusFile::read_from(&mut file, ParseOptions::new()).unwrap();
+	assert_eq!(
+		f.vorbis_comments().get("ENCODER"),
+		Some("Xiph.Org Opus testvectormaker")
+	);
+	assert!(f.vorbis_comments().get("TESTDESCRIPTION").is_some());
+	assert!(f.vorbis_comments().artist().is_none());
+	assert_eq!(f.vorbis_comments().vendor(), "libopus 0.9.11-66-g64c2dd7");
+}
+
+#[test]
+fn test_write_comments() {
+	let mut file = temp_file!("tests/taglib/data/correctness_gain_silent_output.opus");
+
+	{
+		let mut f = OpusFile::read_from(&mut file, ParseOptions::new()).unwrap();
+		file.rewind().unwrap();
+		f.vorbis_comments_mut()
+			.set_artist(String::from("Your Tester"));
+		f.save_to(&mut file).unwrap();
+	}
+	file.rewind().unwrap();
+	{
+		let f = OpusFile::read_from(&mut file, ParseOptions::new()).unwrap();
+		assert_eq!(
+			f.vorbis_comments().get("ENCODER"),
+			Some("Xiph.Org Opus testvectormaker")
+		);
+		assert!(f.vorbis_comments().get("TESTDESCRIPTION").is_some());
+		assert_eq!(f.vorbis_comments().artist().as_deref(), Some("Your Tester"));
+		assert_eq!(f.vorbis_comments().vendor(), "libopus 0.9.11-66-g64c2dd7");
+	}
+}
+
+#[test]
+#[ignore]
+fn test_split_packets() {
+	// Marker test, Lofty does not retain packet information
+}