e2e: test 'move-leader' command

Signed-off-by: Gyu-Ho Lee <gyuhox@gmail.com>

e2e/ctl_v3_move_leader_test.go

@@ -0,0 +1,92 @@
+// 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 e2e
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/coreos/etcd/clientv3"
+	"github.com/coreos/etcd/pkg/testutil"
+	"github.com/coreos/etcd/pkg/types"
+)
+
+func TestCtlV3MoveLeader(t *testing.T) {
+	defer testutil.AfterTest(t)
+
+	epc := setupEtcdctlTest(t, &configNoTLS, true)
+	defer func() {
+		if errC := epc.Close(); errC != nil {
+			t.Fatalf("error closing etcd processes (%v)", errC)
+		}
+	}()
+
+	var leadIdx int
+	var leaderID uint64
+	var transferee uint64
+	for i, ep := range epc.grpcEndpoints() {
+		cli, err := clientv3.New(clientv3.Config{
+			Endpoints:   []string{ep},
+			DialTimeout: 3 * time.Second,
+		})
+		if err != nil {
+			t.Fatal(err)
+		}
+		resp, err := cli.Status(context.Background(), ep)
+		if err != nil {
+			t.Fatal(err)
+		}
+		cli.Close()
+
+		if resp.Header.GetMemberId() == resp.Leader {
+			leadIdx = i
+			leaderID = resp.Leader
+		} else {
+			transferee = resp.Header.GetMemberId()
+		}
+	}
+
+	os.Setenv("ETCDCTL_API", "3")
+	defer os.Unsetenv("ETCDCTL_API")
+	cx := ctlCtx{
+		t:           t,
+		cfg:         configNoTLS,
+		dialTimeout: 7 * time.Second,
+		epc:         epc,
+	}
+
+	tests := []struct {
+		prefixes []string
+		expect   string
+	}{
+		{ // request to non-leader
+			cx.prefixArgs([]string{cx.epc.grpcEndpoints()[(leadIdx+1)%3]}),
+			"no leader endpoint given at ",
+		},
+		{ // request to leader
+			cx.prefixArgs([]string{cx.epc.grpcEndpoints()[leadIdx]}),
+			fmt.Sprintf("Leadership transferred from %s to %s", types.ID(leaderID), types.ID(transferee)),
+		},
+	}
+	for i, tc := range tests {
+		cmdArgs := append(tc.prefixes, "move-leader", types.ID(transferee).String())
+		if err := spawnWithExpect(cmdArgs, tc.expect); err != nil {
+			t.Fatalf("#%d: %v", i, err)
+		}
+	}
+}