Adding e2e test for HostProcess containers on Windows

test/e2e/windows/host_process.go

@@ -0,0 +1,96 @@
+/*
+Copyright 2021 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 windows
+
+import (
+	"context"
+	"time"
+
+	"github.com/onsi/ginkgo"
+	v1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	utilfeature "k8s.io/apiserver/pkg/util/feature"
+	"k8s.io/kubernetes/pkg/features"
+	"k8s.io/kubernetes/test/e2e/framework"
+	e2eskipper "k8s.io/kubernetes/test/e2e/framework/skipper"
+	imageutils "k8s.io/kubernetes/test/utils/image"
+)
+
+var _ = SIGDescribe("[Feature:WindowsHostProcessContainers] [Excluded:WindowsDocker] [MinimumKubeletVersion:1.22] HostProcess containers", func() {
+	ginkgo.BeforeEach(func() {
+		e2eskipper.SkipUnlessNodeOSDistroIs("windows")
+		SkipUnlessWindowsHostProcessContainersEnabled()
+	})
+
+	f := framework.NewDefaultFramework("host-process-test-windows")
+
+	ginkgo.It("should run as a process on the host/node", func() {
+
+		ginkgo.By("selecting a Windows node")
+		targetNode, err := findWindowsNode(f)
+		framework.ExpectNoError(err, "Error finding Windows node")
+		framework.Logf("Using node: %v", targetNode.Name)
+
+		ginkgo.By("scheduling a pod with a container that verifies %COMPUTERNAME% matches selected node name")
+		image := imageutils.GetConfig(imageutils.BusyBox)
+
+		trueVar := true
+		podName := "host-process-test-pod"
+		pod := &v1.Pod{
+			ObjectMeta: metav1.ObjectMeta{
+				Name: podName,
+			},
+			Spec: v1.PodSpec{
+				SecurityContext: &v1.PodSecurityContext{
+					WindowsOptions: &v1.WindowsSecurityContextOptions{
+						HostProcess: &trueVar,
+					},
+				},
+				HostNetwork: true,
+				Containers: []v1.Container{
+					{
+						Image:   image.GetE2EImage(),
+						Name:    "computer-name-test",
+						Command: []string{"cmd.exe", "/K", "IF", "NOT", "%COMPUTERNAME%", "==", targetNode.Name, "(", "exit", "-1", ")"},
+					},
+				},
+				RestartPolicy: v1.RestartPolicyNever,
+				NodeName:      targetNode.Name,
+			},
+		}
+
+		f.PodClient().Create(pod)
+
+		ginkgo.By("Waiting for pod to run")
+		f.PodClient().WaitForFinish(podName, 3*time.Minute)
+
+		ginkgo.By("Then ensuring pod finished running successfully")
+		p, err := f.ClientSet.CoreV1().Pods(f.Namespace.Name).Get(
+			context.TODO(),
+			podName,
+			metav1.GetOptions{})
+
+		framework.ExpectNoError(err, "Error retrieving pod")
+		framework.ExpectEqual(p.Status.Phase, v1.PodSucceeded)
+	})
+})
+
+func SkipUnlessWindowsHostProcessContainersEnabled() {
+	if !utilfeature.DefaultFeatureGate.Enabled(features.WindowsHostProcessContainers) {
+		e2eskipper.Skipf("Skipping test because feature 'WindowsHostProcessContainers' is not enabled")
+	}
+}