client: correctly unmarshal users in ListUsers

client/auth_user.go

@@ -41,6 +41,10 @@ type UserRoles struct {
 	Roles []Role `json:"roles"`
 }
 
+type userName struct {
+	User string `json:"user"`
+}
+
 func v2AuthURL(ep url.URL, action string, name string) *url.URL {
 	if name != "" {
 		ep.Path = path.Join(ep.Path, defaultV2AuthPrefix, action, name)
@@ -192,13 +196,20 @@ func (u *httpAuthUserAPI) ListUsers(ctx context.Context) ([]string, error) {
 		}
 		return nil, sec
 	}
+
 	var userList struct {
-		Users []string `json:"users"`
+		Users []User `json:"users"`
 	}
+
 	if err = json.Unmarshal(body, &userList); err != nil {
 		return nil, err
 	}
-	return userList.Users, nil
+
+	ret := make([]string, 0, len(userList.Users))
+	for _, u := range userList.Users {
+		ret = append(ret, u.User)
+	}
+	return ret, nil
 }
 
 func (u *httpAuthUserAPI) AddUser(ctx context.Context, username string, password string) error {

e2e/etcdctl_test.go

@@ -214,6 +214,29 @@ func testCtlV2GetRoleUser(t *testing.T, cfg *etcdProcessClusterConfig) {
 	}
 }
 
+func TestCtlV2UserList(t *testing.T) {
+	defer testutil.AfterTest(t)
+
+	mustEtcdctl(t)
+
+	epc, cerr := newEtcdProcessCluster(&defaultConfigWithProxy)
+	if cerr != nil {
+		t.Fatalf("could not start etcd process cluster (%v)", cerr)
+	}
+	defer func() {
+		if err := epc.Close(); err != nil {
+			t.Fatalf("error closing etcd processes (%v)", err)
+		}
+	}()
+
+	if err := etcdctlUserAdd(epc, "username", "password"); err != nil {
+		t.Fatalf("failed to add user (%v)", err)
+	}
+	if err := etcdctlUserList(epc, "username"); err != nil {
+		t.Fatalf("failed to list users (%v)", err)
+	}
+}
+
 func etcdctlPrefixArgs(clus *etcdProcessCluster, noSync bool) []string {
 	endpoints := ""
 	if proxies := clus.proxies(); len(proxies) != 0 {
@@ -295,6 +318,11 @@ func etcdctlUserGet(clus *etcdProcessCluster, user string) error {
 	return spawnWithExpectedString(cmdArgs, "User: "+user)
 }
 
+func etcdctlUserList(clus *etcdProcessCluster, expectedUser string) error {
+	cmdArgs := append(etcdctlPrefixArgs(clus, false), "user", "list")
+	return spawnWithExpectedString(cmdArgs, expectedUser)
+}
+
 func mustEtcdctl(t *testing.T) {
 	if !fileutil.Exist("../bin/etcdctl") {
 		t.Fatalf("could not find etcdctl binary")