add more tests, fix event/command response race condition

tests/integration.rs

@@ -0,0 +1,100 @@
+use mpvipc::{Error, Mpv, MpvExt};
+use std::path::Path;
+use tokio::{
+    process::{Child, Command},
+    time::{sleep, timeout, Duration},
+};
+
+#[cfg(target_family = "unix")]
+async fn spawn_headless_mpv() -> Result<(Child, Mpv), Error> {
+    let socket_path_str = format!("/tmp/mpv-ipc-{}", uuid::Uuid::new_v4());
+    let socket_path = Path::new(&socket_path_str);
+
+    let process_handle = Command::new("mpv")
+        .arg("--no-config")
+        .arg("--idle")
+        .arg("--no-video")
+        .arg("--no-audio")
+        .arg(format!(
+            "--input-ipc-server={}",
+            &socket_path.to_str().unwrap()
+        ))
+        .spawn()
+        .expect("Failed to start mpv");
+
+    if timeout(Duration::from_millis(500), async {
+        while !&socket_path.exists() {
+            sleep(Duration::from_millis(10)).await;
+        }
+    })
+    .await
+    .is_err()
+    {
+        panic!("Failed to create mpv socket at {:?}", &socket_path);
+    }
+
+    let mpv = Mpv::connect(socket_path.to_str().unwrap()).await.unwrap();
+    Ok((process_handle, mpv))
+}
+
+#[tokio::test]
+#[cfg(target_family = "unix")]
+async fn test_get_mpv_version() {
+    let (mut proc, mpv) = spawn_headless_mpv().await.unwrap();
+    let version: String = mpv.get_property("mpv-version").await.unwrap();
+    assert!(version.starts_with("mpv"));
+
+    mpv.kill().await.unwrap();
+    proc.kill().await.unwrap();
+}
+
+#[tokio::test]
+#[cfg(target_family = "unix")]
+async fn test_set_property() {
+    let (mut proc, mpv) = spawn_headless_mpv().await.unwrap();
+    mpv.set_property("pause", true).await.unwrap();
+    let paused: bool = mpv.get_property("pause").await.unwrap();
+    assert!(paused);
+
+    mpv.kill().await.unwrap();
+    proc.kill().await.unwrap();
+}
+
+#[tokio::test]
+#[cfg(target_family = "unix")]
+async fn test_events() {
+    use futures::stream::StreamExt;
+
+    let (mut proc, mpv) = spawn_headless_mpv().await.unwrap();
+
+    mpv.observe_property(1337, "pause").await.unwrap();
+
+    let mut events = mpv.get_event_stream().await;
+    let event_checking_thread = tokio::spawn(async move {
+        loop {
+            let event = events.next().await.unwrap().unwrap();
+            if let mpvipc::Event::PropertyChange { id, property } = event {
+                if id == 1337 {
+                    assert_eq!(property, mpvipc::Property::Pause(true));
+                    break;
+                }
+            }
+        }
+    });
+
+    tokio::time::sleep(Duration::from_millis(10)).await;
+
+    mpv.set_property("pause", true).await.unwrap();
+
+    if let Err(_) = tokio::time::timeout(
+        tokio::time::Duration::from_millis(500),
+        event_checking_thread,
+    )
+    .await
+    {
+        panic!("Event checking thread timed out");
+    }
+
+    mpv.kill().await.unwrap();
+    proc.kill().await.unwrap();
+}