Add test case for kubelet phase command

cmd/kubeadm/app/cmd/phases/kubelet_test.go

@@ -0,0 +1,63 @@
+/*
+Copyright 2018 The Kubernetes 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 phases
+
+import (
+	"testing"
+
+	"github.com/spf13/cobra"
+
+	cmdtestutil "k8s.io/kubernetes/cmd/kubeadm/test/cmd"
+)
+
+func TestKubeletSubCommandsHasFlags(t *testing.T) {
+	subCmds := []*cobra.Command{
+		NewCmdKubeletWriteInitConfig(),
+		NewCmdKubeletUploadDynamicConfig(),
+		NewCmdKubeletEnableDynamicConfig(),
+	}
+
+	commonFlags := []string{
+		"config",
+	}
+
+	var tests = []struct {
+		command         string
+		additionalFlags []string
+	}{
+		{
+			command: "init",
+		},
+		{
+			command: "upload",
+			additionalFlags: []string{
+				"kubeconfig",
+			},
+		},
+		{
+			command: "enable",
+			additionalFlags: []string{
+				"node-name",
+			},
+		},
+	}
+
+	for _, test := range tests {
+		expectedFlags := append(commonFlags, test.additionalFlags...)
+		cmdtestutil.AssertSubCommandHasFlags(t, subCmds, test.command, expectedFlags...)
+	}
+}