Separate go module for client tests

Will help us drop dependency to github.com/Microsoft/hcsshim/test in the
main go.mod

Signed-off-by: Davanum Srinivas <davanum@gmail.com>

integration/client/client_windows_test.go

@@ -0,0 +1,65 @@
+/*
+   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 containerd
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/Microsoft/hcsshim/osversion"
+	_ "github.com/Microsoft/hcsshim/test/functional/manifest" // For rsrc_amd64.syso
+)
+
+const (
+	defaultAddress = `\\.\pipe\containerd-containerd-test`
+)
+
+var (
+	defaultRoot  = filepath.Join(os.Getenv("programfiles"), "containerd", "root-test")
+	defaultState = filepath.Join(os.Getenv("programfiles"), "containerd", "state-test")
+	testImage    string
+	shortCommand = withTrue()
+	longCommand  = withProcessArgs("ping", "-t", "localhost")
+)
+
+func init() {
+	b := osversion.Build()
+	switch b {
+	case osversion.RS1:
+		testImage = "mcr.microsoft.com/windows/nanoserver:sac2016"
+	case osversion.RS3:
+		testImage = "mcr.microsoft.com/windows/nanoserver:1709"
+	case osversion.RS4:
+		testImage = "mcr.microsoft.com/windows/nanoserver:1803"
+	case osversion.RS5:
+		testImage = "mcr.microsoft.com/windows/nanoserver:1809"
+	case osversion.V19H1:
+		testImage = "mcr.microsoft.com/windows/nanoserver:1903"
+	case osversion.V19H2:
+		testImage = "mcr.microsoft.com/windows/nanoserver:1909"
+	case osversion.V20H1:
+		testImage = "mcr.microsoft.com/windows/nanoserver:2004"
+	case osversion.V20H2:
+		testImage = "mcr.microsoft.com/windows/nanoserver:20H2"
+	default:
+		fmt.Println("No test image defined for Windows build version:", b)
+		panic("No windows test image found for this Windows build")
+	}
+
+	fmt.Println("Windows test image:", testImage, ", Windows build version:", b)
+}