kubectl describe <kind> work with no arguments

Add describe_resource_assert to test describe <kind> with no object arg

docs/man/man1/kubectl-describe.1

@@ -159,6 +159,9 @@ $ kubectl describe pods/nginx
 // Describe a pod using the data in pod.json.
 $ kubectl describe \-f pod.json
 
+// Describe all pods
+$ kubectl describe pods
+
 // Describe pods by label name=myLabel
 $ kubectl describe po \-l name=myLabel
 

docs/user-guide/kubectl/kubectl_describe.md

@@ -69,6 +69,9 @@ $ kubectl describe pods/nginx
 // Describe a pod using the data in pod.json.
 $ kubectl describe -f pod.json
 
+// Describe all pods
+$ kubectl describe pods
+
 // Describe pods by label name=myLabel
 $ kubectl describe po -l name=myLabel
 
@@ -118,7 +121,7 @@ $ kubectl describe pods frontend
 
 * [kubectl](kubectl.md)	 - kubectl controls the Kubernetes cluster manager
 
-###### Auto generated by spf13/cobra at 2015-08-07 07:32:08.128980687 +0000 UTC
+###### Auto generated by spf13/cobra at 2015-08-10 06:08:06.262721462 +0000 UTC
 
 <!-- BEGIN MUNGE: GENERATED_ANALYTICS -->
 [![Analytics](https://kubernetes-site.appspot.com/UA-36037335-10/GitHub/docs/user-guide/kubectl/kubectl_describe.md?pixel)]()

hack/lib/test.sh

@@ -79,3 +79,31 @@ kube::test::describe_object_assert() {
   echo -n ${reset}
   return 0
 }
+
+kube::test::describe_resource_assert() {
+  local resource=$1
+  local matches=${@:2}
+
+  result=$(eval kubectl describe "${kube_flags[@]}" $resource)
+
+  for match in ${matches}; do
+    if [[ ! $(echo "$result" | grep ${match}) ]]; then
+      echo ${bold}${red}
+      echo "FAIL!"
+      echo "Describe $resource"
+      echo "  Expected Match: $match"
+      echo "  Not found in:"
+      echo "$result"
+      echo ${reset}${red}
+      caller
+      echo ${reset}
+      return 1
+    fi
+  done
+
+  echo -n ${green}
+  echo "Successful describe $resource:"
+  echo "$result"
+  echo -n ${reset}
+  return 0
+}

hack/test-cmd.sh

@@ -236,6 +236,8 @@ runTests() {
   kube::test::get_object_assert 'pods/valid-pod' "{{$id_field}}" 'valid-pod'
   # Describe command should print detailed information
   kube::test::describe_object_assert pods 'valid-pod' "Name:" "Image(s):" "Node:" "Labels:" "Status:" "Replication Controllers"
+  # Describe command (resource only) should print detailed information
+  kube::test::describe_resource_assert pods "Name:" "Image(s):" "Node:" "Labels:" "Status:" "Replication Controllers"
 
   ### Dump current valid-pod POD
   output_pod=$(kubectl get pod valid-pod -o yaml --output-version=v1 "${kube_flags[@]}")
@@ -493,6 +495,8 @@ runTests() {
   kube::test::get_object_assert services "{{range.items}}{{$id_field}}:{{end}}" 'kubernetes:redis-master:'
   # Describe command should print detailed information
   kube::test::describe_object_assert services 'redis-master' "Name:" "Labels:" "Selector:" "IP:" "Port:" "Endpoints:" "Session Affinity:"
+  # Describe command (resource only) should print detailed information
+  kube::test::describe_resource_assert services "Name:" "Labels:" "Selector:" "IP:" "Port:" "Endpoints:" "Session Affinity:"
 
   ### Dump current redis-master service
   output_service=$(kubectl get service redis-master -o json --output-version=v1 "${kube_flags[@]}")
@@ -592,6 +596,8 @@ __EOF__
   kube::test::get_object_assert rc "{{range.items}}{{$id_field}}:{{end}}" 'frontend:'
   # Describe command should print detailed information
   kube::test::describe_object_assert rc 'frontend' "Name:" "Image(s):" "Labels:" "Selector:" "Replicas:" "Pods Status:"
+  # Describe command (resource only) should print detailed information
+  kube::test::describe_resource_assert rc "Name:" "Name:" "Image(s):" "Labels:" "Selector:" "Replicas:" "Pods Status:"
 
   ### Scale replication controller frontend with current-replicas and replicas
   # Pre-condition: 3 replicas
@@ -740,6 +746,8 @@ __EOF__
   kube::test::get_object_assert nodes "{{range.items}}{{$id_field}}:{{end}}" '127.0.0.1:'
 
   kube::test::describe_object_assert nodes "127.0.0.1" "Name:" "Labels:" "CreationTimestamp:" "Conditions:" "Addresses:" "Capacity:" "Pods:"
+  # Describe command (resource only) should print detailed information
+  kube::test::describe_resource_assert nodes "Name:" "Labels:" "CreationTimestamp:" "Conditions:" "Addresses:" "Capacity:" "Pods:"
 
   ### kubectl patch update can mark node unschedulable
   # Pre-condition: node is schedulable

pkg/kubectl/cmd/describe.go

@@ -56,6 +56,9 @@ $ kubectl describe pods/nginx
 // Describe a pod using the data in pod.json.
 $ kubectl describe -f pod.json
 
+// Describe all pods
+$ kubectl describe pods
+
 // Describe pods by label name=myLabel
 $ kubectl describe po -l name=myLabel
 
@@ -100,7 +103,7 @@ func RunDescribe(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []s
 		NamespaceParam(cmdNamespace).DefaultNamespace().
 		FilenameParam(enforceNamespace, filenames...).
 		SelectorParam(selector).
-		ResourceTypeOrNameArgs(false, args...).
+		ResourceTypeOrNameArgs(true, args...).
 		Flatten().
 		Do()
 	err = r.Err()

pkg/kubectl/cmd/describe_test.go

@@ -81,3 +81,22 @@ func TestDescribeObject(t *testing.T) {
 		t.Errorf("unexpected output: %s", buf.String())
 	}
 }
+
+func TestDescribeListObjects(t *testing.T) {
+	pods, _, _ := testData()
+	f, tf, codec := NewAPIFactory()
+	d := &testDescriber{Output: "test output"}
+	tf.Describer = d
+	tf.Client = &client.FakeRESTClient{
+		Codec: codec,
+		Resp:  &http.Response{StatusCode: 200, Body: objBody(codec, pods)},
+	}
+
+	tf.Namespace = "test"
+	buf := bytes.NewBuffer([]byte{})
+	cmd := NewCmdDescribe(f, buf)
+	cmd.Run(cmd, []string{"pods"})
+	if buf.String() != fmt.Sprintf("%s\n\n%s\n\n", d.Output, d.Output) {
+		t.Errorf("unexpected output: %s", buf.String())
+	}
+}