Graceful shutdown for ServerMux (#2341)

server-mux_test.go

@@ -0,0 +1,90 @@
+/*
+ * Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
+ *
+ * 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 main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+func TestClose(t *testing.T) {
+	// Create ServerMux
+	m := NewMuxServer("", nil)
+
+	if err := m.Close(); err != nil {
+		t.Error("Server errored while trying to Close", err)
+	}
+}
+
+func TestMuxServer(t *testing.T) {
+	ts := httptest.NewUnstartedServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintln(w, "Hello, client")
+	}))
+	defer ts.Close()
+
+	// Create ServerMux
+	m := NewMuxServer("", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprint(w, "hello")
+	}))
+
+	// Set the test server config to the mux
+	ts.Config = &m.Server
+	ts.Start()
+
+	// Create a MuxListener
+	ml, err := NewMuxListener(ts.Listener, m.WaitGroup, "", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	m.listener = ml
+
+	client := http.Client{}
+	res, err := client.Get(ts.URL)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	got, err := ioutil.ReadAll(res.Body)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if string(got) != "hello" {
+		t.Errorf("got %q, want hello", string(got))
+	}
+
+	// Make sure there is only 1 connection
+	m.mu.Lock()
+	if len(m.conns) < 1 {
+		t.Fatal("Should have 1 connections")
+	}
+	m.mu.Unlock()
+
+	// Close the server
+	m.Close()
+
+	// Make sure there are zero connections
+	m.mu.Lock()
+	if len(m.conns) < 0 {
+		t.Fatal("Should have 0 connections")
+	}
+	m.mu.Unlock()
+
+}