Implement container resources update

Signed-off-by: Lantao Liu <lantaol@google.com>

pkg/server/container_update_resources_test.go

@@ -0,0 +1,51 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+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 server
+
+import (
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+	runtimespec "github.com/opencontainers/runtime-spec/specs-go"
+	"github.com/stretchr/testify/assert"
+	"k8s.io/kubernetes/pkg/kubelet/apis/cri/v1alpha1/runtime"
+)
+
+func TestToOCIResources(t *testing.T) {
+	resources := &runtime.LinuxContainerResources{
+		CpuPeriod:          10000,
+		CpuQuota:           20000,
+		CpuShares:          300,
+		MemoryLimitInBytes: 4000000,
+		OomScoreAdj:        -500,
+		CpusetCpus:         "6,7",
+		CpusetMems:         "8,9",
+	}
+	expected := &runtimespec.LinuxResources{
+		CPU: &runtimespec.LinuxCPU{
+			Period: proto.Uint64(10000),
+			Quota:  proto.Int64(20000),
+			Shares: proto.Uint64(300),
+			Cpus:   "6,7",
+			Mems:   "8,9",
+		},
+		Memory: &runtimespec.LinuxMemory{
+			Limit: proto.Int64(4000000),
+		},
+	}
+	assert.Equal(t, expected, toOCIResources(resources))
+}