refactor e2e_node conformance test

Signed-off-by: liang chenye <liangchenye@huawei.com>

test/e2e_node/image_conformance_test.go

@@ -0,0 +1,138 @@
+/*
+Copyright 2016 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 e2e_node
+
+import (
+	"time"
+
+	"k8s.io/kubernetes/pkg/client/restclient"
+	client "k8s.io/kubernetes/pkg/client/unversioned"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+const (
+	imageRetryTimeout = time.Minute * 2
+	imagePullInterval = time.Second * 15
+)
+
+var _ = Describe("Container Conformance Test", func() {
+	var cl *client.Client
+
+	BeforeEach(func() {
+		// Setup the apiserver client
+		cl = client.NewOrDie(&restclient.Config{Host: *apiServerAddress})
+	})
+
+	Describe("image conformance blackbox test", func() {
+		Context("when testing images that exist", func() {
+			var conformImages []ConformanceImage
+			BeforeEach(func() {
+				existImageTags := []string{
+					"gcr.io/google_containers/busybox:1.24",
+					"gcr.io/google_containers/mounttest:0.2",
+				}
+				for _, existImageTag := range existImageTags {
+					conformImage, _ := NewConformanceImage("docker", existImageTag)
+					// Pulling images from gcr.io is flaky, so retry failures
+					Eventually(func() error {
+						return conformImage.Pull()
+					}, imageRetryTimeout, imagePullInterval).ShouldNot(HaveOccurred())
+					conformImages = append(conformImages, conformImage)
+				}
+			})
+
+			It("It should present successfully [Conformance]", func() {
+				for _, conformImage := range conformImages {
+					present, err := conformImage.Present()
+					Expect(err).ShouldNot(HaveOccurred())
+					Expect(present).To(BeTrue())
+				}
+			})
+
+			It("should list pulled images [Conformance]", func() {
+				image, _ := NewConformanceImage("docker", "")
+				tags, err := image.List()
+				Expect(err).ShouldNot(HaveOccurred())
+				for _, conformImage := range conformImages {
+					Expect(tags).To(ContainElement(conformImage.GetTag()))
+				}
+			})
+
+			AfterEach(func() {
+				for _, conformImage := range conformImages {
+					conformImage.Remove()
+				}
+				conformImages = []ConformanceImage{}
+			})
+
+		})
+		Context("when testing image that does not exist", func() {
+			var conformImages []ConformanceImage
+			BeforeEach(func() {
+				invalidImageTags := []string{
+					// nonexistent image registry
+					"foo.com/foo/fooimage",
+					// nonexistent image
+					"gcr.io/google_containers/not_exist",
+					// TODO(random-liu): Add test for image pulling credential
+				}
+				for _, invalidImageTag := range invalidImageTags {
+					conformImage, _ := NewConformanceImage("docker", invalidImageTag)
+					// Pulling images from gcr.io is flaky, so retry to make sure failure is not caused by flaky.
+					Consistently(func() error {
+						return conformImage.Pull()
+					}, imageRetryTimeout, imagePullInterval).Should(HaveOccurred())
+					conformImages = append(conformImages, conformImage)
+				}
+			})
+
+			It("it should not present images [Conformance]", func() {
+				for _, conformImage := range conformImages {
+					present, err := conformImage.Present()
+					Expect(err).ShouldNot(HaveOccurred())
+					Expect(present).To(BeFalse())
+				}
+			})
+
+			It("it should not list pulled images [Conformance]", func() {
+				image, _ := NewConformanceImage("docker", "")
+				tags, err := image.List()
+				Expect(err).ShouldNot(HaveOccurred())
+				for _, conformImage := range conformImages {
+					Expect(tags).NotTo(ContainElement(conformImage.GetTag()))
+				}
+			})
+
+			It("it should not remove non-exist images [Conformance]", func() {
+				for _, conformImage := range conformImages {
+					err := conformImage.Remove()
+					Expect(err).Should(HaveOccurred())
+				}
+			})
+
+			AfterEach(func() {
+				for _, conformImage := range conformImages {
+					conformImage.Remove()
+				}
+				conformImages = []ConformanceImage{}
+			})
+
+		})
+	})
+})