Move more things into docke label, and add label test

pkg/kubelet/dockertools/labels_test.go

@@ -0,0 +1,59 @@
+/*
+Copyright 2015 The Kubernetes Authors 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 dockertools
+
+import (
+	"reflect"
+	"strconv"
+	"testing"
+
+	"k8s.io/kubernetes/pkg/api"
+	kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
+)
+
+func TestLabels(t *testing.T) {
+	restartCount := 5
+	container := &api.Container{
+		Name: "test_container",
+		TerminationMessagePath: "/tmp",
+	}
+	pod := &api.Pod{
+		ObjectMeta: api.ObjectMeta{
+			Name:      "test_pod",
+			Namespace: "test_pod_namespace",
+			UID:       "test_pod_uid",
+		},
+	}
+	expected := &labelledContainerInfo{
+		PodName:                pod.Name,
+		PodNamespace:           pod.Namespace,
+		PodUID:                 pod.UID,
+		Name:                   container.Name,
+		Hash:                   strconv.FormatUint(kubecontainer.HashContainer(container), 16),
+		RestartCount:           restartCount,
+		TerminationMessagePath: container.TerminationMessagePath,
+	}
+
+	labels := newLabels(container, pod, restartCount)
+	containerInfo, err := getContainerInfoFromLabel(labels)
+	if err != nil {
+		t.Errorf("Unexpected error when getContainerInfoFromLabel: %v", err)
+	}
+	if !reflect.DeepEqual(containerInfo, expected) {
+		t.Errorf("expected %v, got %v", expected, containerInfo)
+	}
+}