Move printing the valid resource types to a function

Should be calculated from discovery in the future. Also improve
descriptions on the affected commands.

pkg/kubectl/cmd/cmd_test.go

@@ -38,6 +38,7 @@ import (
 	"k8s.io/client-go/rest/fake"
 	"k8s.io/kubernetes/pkg/api"
 	"k8s.io/kubernetes/pkg/api/testapi"
+	apitesting "k8s.io/kubernetes/pkg/api/testing"
 	cmdtesting "k8s.io/kubernetes/pkg/kubectl/cmd/testing"
 	cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
 	"k8s.io/kubernetes/pkg/kubectl/scheme"
@@ -85,6 +86,52 @@ func defaultClientConfigForVersion(version *schema.GroupVersion) *restclient.Con
 	}
 }
 
+func testData() (*api.PodList, *api.ServiceList, *api.ReplicationControllerList) {
+	pods := &api.PodList{
+		ListMeta: metav1.ListMeta{
+			ResourceVersion: "15",
+		},
+		Items: []api.Pod{
+			{
+				ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "test", ResourceVersion: "10"},
+				Spec:       apitesting.DeepEqualSafePodSpec(),
+			},
+			{
+				ObjectMeta: metav1.ObjectMeta{Name: "bar", Namespace: "test", ResourceVersion: "11"},
+				Spec:       apitesting.DeepEqualSafePodSpec(),
+			},
+		},
+	}
+	svc := &api.ServiceList{
+		ListMeta: metav1.ListMeta{
+			ResourceVersion: "16",
+		},
+		Items: []api.Service{
+			{
+				ObjectMeta: metav1.ObjectMeta{Name: "baz", Namespace: "test", ResourceVersion: "12"},
+				Spec: api.ServiceSpec{
+					SessionAffinity: "None",
+					Type:            api.ServiceTypeClusterIP,
+				},
+			},
+		},
+	}
+	rc := &api.ReplicationControllerList{
+		ListMeta: metav1.ListMeta{
+			ResourceVersion: "17",
+		},
+		Items: []api.ReplicationController{
+			{
+				ObjectMeta: metav1.ObjectMeta{Name: "rc1", Namespace: "test", ResourceVersion: "18"},
+				Spec: api.ReplicationControllerSpec{
+					Replicas: 1,
+				},
+			},
+		},
+	}
+	return pods, svc, rc
+}
+
 type testPrinter struct {
 	Objects        []runtime.Object
 	Err            error