concurrency: add examples

clientv3/concurrency/main_test.go

@@ -0,0 +1,44 @@
+// Copyright 2017 The etcd Authors
+//
+// 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 concurrency_test
+
+import (
+	"fmt"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/coreos/etcd/integration"
+	"github.com/coreos/etcd/pkg/testutil"
+)
+
+var endpoints []string
+
+// TestMain sets up an etcd cluster for running the examples.
+func TestMain(m *testing.M) {
+	cfg := integration.ClusterConfig{Size: 1}
+	clus := integration.NewClusterV3(nil, &cfg)
+	endpoints = []string{clus.Client(0).Endpoints()[0]}
+	v := m.Run()
+	clus.Terminate(nil)
+	if err := testutil.CheckAfterTest(time.Second); err != nil {
+		fmt.Fprintf(os.Stderr, "%v", err)
+		os.Exit(1)
+	}
+	if v == 0 && testutil.CheckLeakedGoroutine() {
+		os.Exit(1)
+	}
+	os.Exit(v)
+}