tests/integration: Move of naming/snapshot clientv3 tests (and yaml reference)

path change in clientv3/yaml/config_test

git mv clientv3/naming/grpc_test.go         tests/integration/clientv3/grpc_test.go
git mv clientv3/snapshot/*_test.go          tests/integration/snapshot
git mv clientv3/{main_test.go,example_*.go} tests/integration/clientv3/examples/

tests/integration/clientv3/examples/example_cluster_test.go

@@ -0,0 +1,124 @@
+// Copyright 2016 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 clientv3_test
+
+import (
+	"context"
+	"fmt"
+	"log"
+
+	"go.etcd.io/etcd/v3/clientv3"
+)
+
+func ExampleCluster_memberList() {
+	cli, err := clientv3.New(clientv3.Config{
+		Endpoints:   endpoints,
+		DialTimeout: dialTimeout,
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer cli.Close()
+
+	resp, err := cli.MemberList(context.Background())
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Println("members:", len(resp.Members))
+	// Output: members: 3
+}
+
+func ExampleCluster_memberAdd() {
+	cli, err := clientv3.New(clientv3.Config{
+		Endpoints:   endpoints[:2],
+		DialTimeout: dialTimeout,
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer cli.Close()
+
+	peerURLs := endpoints[2:]
+	mresp, err := cli.MemberAdd(context.Background(), peerURLs)
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Println("added member.PeerURLs:", mresp.Member.PeerURLs)
+	// added member.PeerURLs: [http://localhost:32380]
+}
+
+func ExampleCluster_memberAddAsLearner() {
+	cli, err := clientv3.New(clientv3.Config{
+		Endpoints:   endpoints[:2],
+		DialTimeout: dialTimeout,
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer cli.Close()
+
+	peerURLs := endpoints[2:]
+	mresp, err := cli.MemberAddAsLearner(context.Background(), peerURLs)
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Println("added member.PeerURLs:", mresp.Member.PeerURLs)
+	fmt.Println("added member.IsLearner:", mresp.Member.IsLearner)
+	// added member.PeerURLs: [http://localhost:32380]
+	// added member.IsLearner: true
+}
+
+func ExampleCluster_memberRemove() {
+	cli, err := clientv3.New(clientv3.Config{
+		Endpoints:   endpoints[1:],
+		DialTimeout: dialTimeout,
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer cli.Close()
+
+	resp, err := cli.MemberList(context.Background())
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	_, err = cli.MemberRemove(context.Background(), resp.Members[0].ID)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+func ExampleCluster_memberUpdate() {
+	cli, err := clientv3.New(clientv3.Config{
+		Endpoints:   endpoints,
+		DialTimeout: dialTimeout,
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer cli.Close()
+
+	resp, err := cli.MemberList(context.Background())
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	peerURLs := []string{"http://localhost:12380"}
+	_, err = cli.MemberUpdate(context.Background(), resp.Members[0].ID, peerURLs)
+	if err != nil {
+		log.Fatal(err)
+	}
+}