Rename middleware/testing (#103)

Rename to test and name the toplevel tests dir to test for consitency.

middleware/test/server.go

@@ -0,0 +1,53 @@
+package test
+
+import (
+	"net"
+	"sync"
+	"time"
+
+	"github.com/miekg/dns"
+)
+
+func TCPServer(laddr string) (*dns.Server, string, error) {
+	l, err := net.Listen("tcp", laddr)
+	if err != nil {
+		return nil, "", err
+	}
+
+	server := &dns.Server{Listener: l, ReadTimeout: time.Hour, WriteTimeout: time.Hour}
+
+	waitLock := sync.Mutex{}
+	waitLock.Lock()
+	server.NotifyStartedFunc = waitLock.Unlock
+
+	go func() {
+		server.ActivateAndServe()
+		l.Close()
+	}()
+
+	waitLock.Lock()
+	return server, l.Addr().String(), nil
+}
+
+func UDPServer(laddr string) (*dns.Server, string, chan bool, error) {
+	pc, err := net.ListenPacket("udp", laddr)
+	if err != nil {
+		return nil, "", nil, err
+	}
+	server := &dns.Server{PacketConn: pc, ReadTimeout: time.Hour, WriteTimeout: time.Hour}
+
+	waitLock := sync.Mutex{}
+	waitLock.Lock()
+	server.NotifyStartedFunc = waitLock.Unlock
+
+	stop := make(chan bool)
+
+	go func() {
+		server.ActivateAndServe()
+		close(stop)
+		pc.Close()
+	}()
+
+	waitLock.Lock()
+	return server, pc.LocalAddr().String(), stop, nil
+}