Merge pull request #112344 from thelegy/tests-snapcast

tests/snapserver: Add test of connection and buffer size setting

nixos/tests/snapcast.nix

···
   tcpPort = 10005;
   httpPort = 10080;
   tcpStreamPort = 10006;
+  bufferSize = 742;
 in {
   name = "snapcast";
   meta = with pkgs.lib.maintainers; {
···
         port = port;
         tcp.port = tcpPort;
         http.port = httpPort;
+        buffer = bufferSize;
         streams = {
           mpd = {
             type = "pipe";
···
         };
       };
     };
+    client = {
+      environment.systemPackages = [ pkgs.snapcast ];
+    };
   };
 
   testScript = ''
···
         server.succeed(
             "curl --fail http://localhost:${toString httpPort}/jsonrpc -d '{json.dumps(get_rpc_version)}'"
         )
+
+    with subtest("test a connection"):
+        client.execute("systemd-run snapclient -h server -p ${toString port}")
+        server.wait_until_succeeds(
+            "journalctl -o cat -u snapserver.service | grep -q 'Hello from'"
+        )
+        client.wait_until_succeeds("journalctl -o cat -u run-\* | grep -q ${toString bufferSize}")
   '';
 })