Make CI tests more robust (#204)

* Add retries to reduce flakiness.
* Reduce time spent on test sleeping.

.config/nextest.toml

@@ -1,4 +1,5 @@
 [profile.default]
 test-threads = 1
+fail-fast = false
 slow-timeout = { period = "30s", terminate-after = 4 }
-fail-fast = false
+retries = { backoff = "fixed", count = 2, delay = "1s" }

src/client/common.rs

@@ -24,6 +24,6 @@ pub fn sleep_on_test() {
     #[cfg(test)]
     {
         use std::{thread, time};
-        thread::sleep(time::Duration::from_millis(200));
+        thread::sleep(time::Duration::from_millis(100));
     }
 }

src/client/test_callback.rs

@@ -55,7 +55,7 @@ impl ProcessHandler for Counter {
         self.frames_since_cycle_start = ps.frames_since_cycle_start();
         let _cycle_times = ps.cycle_times();
         if self.induce_xruns {
-            thread::sleep(time::Duration::from_millis(400));
+            thread::sleep(time::Duration::from_millis(100));
             self.induce_xruns = false;
         }
         self.process_thread = Some(thread::current().id());

src/port/test_client.rs

@@ -8,8 +8,6 @@ use crate::PORT_NAME_SIZE;
 use std::collections::HashSet;
 use std::sync::mpsc;
 use std::sync::Mutex;
-use std::{thread, time};
-
 fn open_test_client(name: &str) -> Client {
     Client::new(name, ClientOptions::NO_START_SERVER).unwrap().0
 }
@@ -371,7 +369,6 @@ fn client_port_can_get_port_by_type_pattern() {
 
     // register port with type name, like midi
     let _p = client.register_port(p_name, MidiIn);
-    thread::sleep(time::Duration::from_millis(400));
 
     // retrieve
     let ports = client.ports(None, Some("midi"), PortFlags::empty());