Merge pull request kubernetes#85595 from zhouya0/add_test_coverage_with_kubectl_get_components

add test coverage with kubectl get components

Author: k8s-ci-robot

staging/src/k8s.io/kubectl/pkg/cmd/get/get_test.go

@@ -1176,18 +1176,18 @@ func TestGetListComponentStatus(t *testing.T) {
 
 	tf.UnstructuredClient = &fake.RESTClient{
 		NegotiatedSerializer: resource.UnstructuredPlusDefaultContentConfig().NegotiatedSerializer,
-		Resp:                 &http.Response{StatusCode: http.StatusOK, Header: cmdtesting.DefaultHeader(), Body: cmdtesting.ObjBody(codec, statuses)},
+		Resp:                 &http.Response{StatusCode: http.StatusOK, Header: cmdtesting.DefaultHeader(), Body: componentStatusTableObjBody(codec, (*statuses).Items...)},
 	}
 
 	streams, _, buf, _ := genericclioptions.NewTestIOStreams()
 	cmd := NewCmdGet("kubectl", tf, streams)
 	cmd.SetOutput(buf)
 	cmd.Run(cmd, []string{"componentstatuses"})
 
-	expected := `NAME            AGE
-servergood      <unknown>
-serverbad       <unknown>
-serverunknown   <unknown>
+	expected := `NAME            STATUS      MESSAGE   ERROR
+servergood      Healthy     ok        
+serverbad       Unhealthy             bad status: 500
+serverunknown   Unhealthy             fizzbuzz error
 `
 	if e, a := expected, buf.String(); e != a {
 		t.Errorf("expected\n%v\ngot\n%v", e, a)
@@ -2788,6 +2788,33 @@ func nodeTableObjBody(codec runtime.Codec, nodes ...corev1.Node) io.ReadCloser {
 	return cmdtesting.ObjBody(codec, table)
 }
 
+// build a meta table response from a componentStatus list
+func componentStatusTableObjBody(codec runtime.Codec, componentStatuses ...corev1.ComponentStatus) io.ReadCloser {
+	table := &metav1.Table{
+		ColumnDefinitions: []metav1.TableColumnDefinition{
+			{Name: "Name", Type: "string", Format: "name"},
+			{Name: "Status", Type: "string", Format: ""},
+			{Name: "Message", Type: "string", Format: ""},
+			{Name: "Error", Type: "string", Format: ""},
+		},
+	}
+	for _, v := range componentStatuses {
+		b := bytes.NewBuffer(nil)
+		codec.Encode(&v, b)
+		var status string
+		if v.Conditions[0].Status == corev1.ConditionTrue {
+			status = "Healthy"
+		} else {
+			status = "Unhealthy"
+		}
+		table.Rows = append(table.Rows, metav1.TableRow{
+			Object: runtime.RawExtension{Raw: b.Bytes()},
+			Cells:  []interface{}{v.Name, status, v.Conditions[0].Message, v.Conditions[0].Error},
+		})
+	}
+	return cmdtesting.ObjBody(codec, table)
+}
+
 // build an empty table response
 func emptyTableObjBody(codec runtime.Codec) io.ReadCloser {
 	table := &metav1.Table{