integration: Adds Windows HostProcess tests

Windows HostProcess containers can run containerized workloads on a Windows host.
These containers operate as normal processes but have access to the host network
namespace, storage, and devices when given the appropriate user privileges.

HostProcess containers support the ability to run as one of the following Windows
service accounts: LocalSystem, LocalService, NetworkService.

Signed-off-by: Claudiu Belu <cbelu@cloudbasesolutions.com>

integration/windows_hostprocess_test.go

@@ -0,0 +1,92 @@
+//go:build windows
+// +build windows
+
+/*
+   Copyright The containerd 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 integration
+
+import (
+	"fmt"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+var (
+	defaultCommand       = WithCommand("Powershell", "/c", "$env:CONTAINER_SANDBOX_MOUNT_POINT/pause.exe")
+	localServiceUsername = WithWindowsUsername("NT AUTHORITY\\Local service")
+	localSystemUsername  = WithWindowsUsername("NT AUTHORITY\\System")
+)
+
+// Tests to verify the Windows HostProcess
+func TestWindowsHostProcess(t *testing.T) {
+	EnsureImageExists(t, pauseImage)
+
+	t.Run("run as Local Service", func(t *testing.T) {
+		runHostProcess(t, false, pauseImage, localServiceUsername, defaultCommand)
+	})
+	t.Run("run as Local System", func(t *testing.T) {
+		runHostProcess(t, false, pauseImage, localSystemUsername, defaultCommand)
+	})
+	t.Run("run as unacceptable user", func(t *testing.T) {
+		runHostProcess(t, true, pauseImage, WithWindowsUsername("Guest"), defaultCommand)
+	})
+	t.Run("run command on host", func(t *testing.T) {
+		cmd := WithCommand("Powershell", "/c", "Get-Command containerd.exe")
+		runHostProcess(t, false, pauseImage, localServiceUsername, cmd)
+	})
+	t.Run("run withHostNetwork", func(t *testing.T) {
+		hostname, err := os.Hostname()
+		require.NoError(t, err)
+		cmd := WithCommand("Powershell", "/c", fmt.Sprintf("if ($env:COMPUTERNAME -ne %s) { exit -1 }", hostname))
+		runHostProcess(t, false, pauseImage, localServiceUsername, cmd)
+	})
+	t.Run("run with a different os.version image", func(t *testing.T) {
+		image := "docker.io/e2eteam/busybox:1.29-windows-amd64-1909"
+		EnsureImageExists(t, image)
+		runHostProcess(t, false, image, localServiceUsername, defaultCommand)
+	})
+}
+
+func runHostProcess(t *testing.T, expectErr bool, image string, opts ...ContainerOpts) {
+	t.Logf("Create a pod config and run sandbox container")
+	sb, sbConfig := PodSandboxConfigWithCleanup(t, "sandbox1", "hostprocess", WithWindowsHostProcess)
+
+	t.Logf("Create a container config and run container in a pod")
+	containerConfig := ContainerConfig(
+		"container1",
+		image,
+		opts...,
+	)
+	cn, err := runtimeService.CreateContainer(sb, containerConfig, sbConfig)
+	require.NoError(t, err)
+	defer func() {
+		assert.NoError(t, runtimeService.RemoveContainer(cn))
+	}()
+	_, err = t, runtimeService.StartContainer(cn)
+	if err != nil {
+		if !expectErr {
+			t.Fatalf("Unexpected error while starting Container: %v", err)
+		}
+		return
+	}
+	defer func() {
+		assert.NoError(t, runtimeService.StopContainer(cn, 10))
+	}()
+}