Add new metadata store.

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

pkg/store/container/status_test.go

@@ -0,0 +1,101 @@
+/*
+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 container
+
+import (
+	"errors"
+	"testing"
+	"time"
+
+	assertlib "github.com/stretchr/testify/assert"
+	"k8s.io/kubernetes/pkg/kubelet/apis/cri/v1alpha1/runtime"
+)
+
+func TestContainerState(t *testing.T) {
+	for c, test := range map[string]struct {
+		status Status
+		state  runtime.ContainerState
+	}{
+		"unknown state": {
+			status: Status{},
+			state:  runtime.ContainerState_CONTAINER_UNKNOWN,
+		},
+		"created state": {
+			status: Status{
+				CreatedAt: time.Now().UnixNano(),
+			},
+			state: runtime.ContainerState_CONTAINER_CREATED,
+		},
+		"running state": {
+			status: Status{
+				CreatedAt: time.Now().UnixNano(),
+				StartedAt: time.Now().UnixNano(),
+			},
+			state: runtime.ContainerState_CONTAINER_RUNNING,
+		},
+		"exited state": {
+			status: Status{
+				CreatedAt:  time.Now().UnixNano(),
+				FinishedAt: time.Now().UnixNano(),
+			},
+			state: runtime.ContainerState_CONTAINER_EXITED,
+		},
+	} {
+		t.Logf("TestCase %q", c)
+		assertlib.Equal(t, test.state, test.status.State())
+	}
+}
+
+func TestStatus(t *testing.T) {
+	testID := "test-id"
+	testStatus := Status{
+		CreatedAt: time.Now().UnixNano(),
+	}
+	updateStatus := Status{
+		CreatedAt: time.Now().UnixNano(),
+		StartedAt: time.Now().UnixNano(),
+	}
+	updateErr := errors.New("update error")
+	assert := assertlib.New(t)
+
+	t.Logf("simple store and get")
+	s, err := StoreStatus(testID, testStatus)
+	assert.NoError(err)
+	old := s.Get()
+	assert.Equal(testStatus, old)
+
+	t.Logf("failed update should not take effect")
+	err = s.Update(func(o Status) (Status, error) {
+		o = updateStatus
+		return o, updateErr
+	})
+	assert.Equal(updateErr, err)
+	assert.Equal(testStatus, s.Get())
+
+	t.Logf("successful update should take effect")
+	err = s.Update(func(o Status) (Status, error) {
+		o = updateStatus
+		return o, nil
+	})
+	assert.NoError(err)
+	assert.Equal(updateStatus, s.Get())
+
+	t.Logf("successful update should not affect existing snapshot")
+	assert.Equal(testStatus, old)
+
+	// TODO(random-liu): Test Load and Delete after disc checkpoint is added.
+}