mox!

mox-/lifecycle_test.go

@@ -0,0 +1,44 @@
+package mox
+
+import (
+	"errors"
+	"net"
+	"os"
+	"testing"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+func TestLifecycle(t *testing.T) {
+	c := &connections{
+		conns:  map[net.Conn]connKind{},
+		gauges: map[connKind]prometheus.GaugeFunc{},
+		active: map[connKind]int64{},
+	}
+	nc0, nc1 := net.Pipe()
+	defer nc0.Close()
+	defer nc1.Close()
+	c.Register(nc0, "proto", "listener")
+	c.Shutdown()
+
+	done := c.Done()
+	select {
+	case <-done:
+		t.Fatalf("already done, but still a connection open")
+	default:
+	}
+
+	_, err := nc0.Read(make([]byte, 1))
+	if err == nil {
+		t.Fatalf("expected i/o deadline exceeded, got no error")
+	}
+	if !errors.Is(err, os.ErrDeadlineExceeded) {
+		t.Fatalf("got %v, expected os.ErrDeadlineExceeded", err)
+	}
+	c.Unregister(nc0)
+	select {
+	case <-done:
+	default:
+		t.Fatalf("unregistered connection, but not yet done")
+	}
+}