Terminate file playback process groups

fileplayback/process_unix_test.go

@@ -0,0 +1,16 @@
+//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
+
+package fileplayback
+
+import (
+	"os/exec"
+	"testing"
+)
+
+func TestConfigureProcessGroupCreatesSeparateGroup(t *testing.T) {
+	cmd := exec.Command("true")
+	configureProcessGroup(cmd)
+	if cmd.SysProcAttr == nil || !cmd.SysProcAttr.Setpgid {
+		t.Fatal("ffmpeg process was not configured to lead its own process group")
+	}
+}