Refactor Get and Describe to allow extension of types

Get should use ResourceMapper, allow Printer to be abstracted,
and extract Describe as *Describer types.

pkg/kubectl/describe_test.go

@@ -0,0 +1,83 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+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 kubectl
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/client"
+)
+
+type describeClient struct {
+	T         *testing.T
+	Namespace string
+	Err       error
+	Fake      *client.Fake
+}
+
+func (c *describeClient) Pod(namespace string) (client.PodInterface, error) {
+	if namespace != c.Namespace {
+		c.T.Errorf("unexpected namespace arg: %s", namespace)
+	}
+	return c.Fake.Pods(namespace), c.Err
+}
+
+func (c *describeClient) ReplicationController(namespace string) (client.ReplicationControllerInterface, error) {
+	if namespace != c.Namespace {
+		c.T.Errorf("unexpected namespace arg: %s", namespace)
+	}
+	return c.Fake.ReplicationControllers(namespace), c.Err
+}
+
+func (c *describeClient) Service(namespace string) (client.ServiceInterface, error) {
+	if namespace != c.Namespace {
+		c.T.Errorf("unexpected namespace arg: %s", namespace)
+	}
+	return c.Fake.Services(namespace), c.Err
+}
+
+func TestDescribePod(t *testing.T) {
+	fake := &client.Fake{}
+	c := &describeClient{T: t, Namespace: "foo", Fake: fake}
+	d := PodDescriber{
+		PodClient:                   c.Pod,
+		ReplicationControllerClient: c.ReplicationController,
+	}
+	out, err := d.Describe("foo", "bar")
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
+	if !strings.Contains(out, "bar") || !strings.Contains(out, "Status:") {
+		t.Errorf("unexpected out: %s", out)
+	}
+}
+
+func TestDescribeService(t *testing.T) {
+	fake := &client.Fake{}
+	c := &describeClient{T: t, Namespace: "foo", Fake: fake}
+	d := ServiceDescriber{
+		ServiceClient: c.Service,
+	}
+	out, err := d.Describe("foo", "bar")
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
+	if !strings.Contains(out, "Labels:") || !strings.Contains(out, "bar") {
+		t.Errorf("unexpected out: %s", out)
+	}
+}