sound: test cli backend argument

Signed-off-by: Albert Esteve <aesteve@redhat.com>

crates/sound/src/lib.rs

@@ -91,7 +91,7 @@ impl From<stream::Error> for Error {
     }
 }
 
-#[derive(ValueEnum, Clone, Default, Debug)]
+#[derive(ValueEnum, Clone, Copy, Default, Debug, Eq, PartialEq)]
 pub enum BackendType {
     #[default]
     Null,
@@ -232,6 +232,10 @@ impl SoundConfig {
     pub fn get_socket_path(&self) -> String {
         String::from(&self.socket)
     }
+
+    pub fn get_audio_backend(&self) -> BackendType {
+        self.audio_backend
+    }
 }
 
 pub struct IOMessage {

crates/sound/src/main.rs

@@ -55,7 +55,7 @@ mod tests {
 
     #[test]
     #[serial]
-    fn test_vsock_config_setup() {
+    fn test_sound_config_setup() {
         let args = SoundArgs::from_args("/tmp/vhost-sound.socket");
 
         let config = SoundConfig::try_from(args);
@@ -64,4 +64,22 @@ mod tests {
         let config = config.unwrap();
         assert_eq!(config.get_socket_path(), "/tmp/vhost-sound.socket");
     }
+
+    #[test]
+    #[serial]
+    fn test_cli_backend_arg() {
+        let args: SoundArgs = Parser::parse_from([
+            "",
+            "--socket",
+            "/tmp/vhost-sound.socket ",
+            "--backend",
+            "null",
+        ]);
+
+        let config = SoundConfig::try_from(args);
+        assert!(config.is_ok());
+
+        let config = config.unwrap();
+        assert_eq!(config.get_audio_backend(), BackendType::Null);
+    }
 }