First commit

pkg/proxy/proxier_test.go

@@ -0,0 +1,73 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package proxy
+
+import (
+	"fmt"
+	"io"
+	"net"
+	"testing"
+
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
+)
+
+// a simple echoServer that only accept one connection
+func echoServer(addr string) error {
+	l, err := net.Listen("tcp", addr)
+	if err != nil {
+		return fmt.Errorf("failed to start echo service: %v", err)
+	}
+	defer l.Close()
+	conn, err := l.Accept()
+	if err != nil {
+		return fmt.Errorf("failed to accept new conn to echo service: %v", err)
+	}
+	io.Copy(conn, conn)
+	conn.Close()
+	return nil
+}
+
+func TestProxy(t *testing.T) {
+	go func() {
+		if err := echoServer("127.0.0.1:2222"); err != nil {
+			t.Fatal(err)
+		}
+	}()
+
+	lb := NewLoadBalancerRR()
+	lb.OnUpdate([]api.Endpoints{{"echo", []string{"127.0.0.1:2222"}}})
+
+	p := NewProxier(lb)
+	if err := p.AddService("echo", 2223); err != nil {
+		t.Fatalf("error adding new service: %v", err)
+	}
+	conn, err := net.Dial("tcp", "127.0.0.1:2223")
+	if err != nil {
+		t.Fatalf("error connecting to proxy: %v", err)
+	}
+	magic := "aaaaa"
+	if _, err := conn.Write([]byte(magic)); err != nil {
+		t.Fatalf("error writing to proxy: %v", err)
+	}
+	buf := make([]byte, 5)
+	if _, err := conn.Read(buf); err != nil {
+		t.Fatalf("error reading from proxy: %v", err)
+	}
+	if string(buf) != magic {
+		t.Fatalf("bad echo from proxy: got: %q, expected %q", string(buf), magic)
+	}
+}