Update integration test to support windows

Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>

helpers_windows_test.go

@@ -0,0 +1,65 @@
+// +build windows
+
+package containerd
+
+import (
+	"context"
+	"strconv"
+
+	"github.com/containerd/containerd/containers"
+	specs "github.com/opencontainers/runtime-spec/specs-go"
+)
+
+const newLine = "\r\n"
+
+func generateSpec(opts ...SpecOpts) (*specs.Spec, error) {
+	spec, err := GenerateSpec(opts...)
+	if err != nil {
+		return nil, err
+	}
+
+	spec.Windows.LayerFolders = dockerLayerFolders
+
+	return spec, nil
+}
+
+func withExitStatus(es int) SpecOpts {
+	return func(s *specs.Spec) error {
+		s.Process.Args = []string{"powershell", "-noprofile", "exit", strconv.Itoa(es)}
+		return nil
+	}
+}
+
+func withProcessArgs(args ...string) SpecOpts {
+	return WithProcessArgs(append([]string{"powershell", "-noprofile"}, args...)...)
+}
+
+func withCat() SpecOpts {
+	return WithProcessArgs("cmd", "/c", "more")
+}
+
+func withTrue() SpecOpts {
+	return WithProcessArgs("cmd", "/c")
+}
+
+func withExecExitStatus(s *specs.Process, es int) {
+	s.Args = []string{"powershell", "-noprofile", "exit", strconv.Itoa(es)}
+}
+
+func withExecArgs(s *specs.Process, args ...string) {
+	s.Args = append([]string{"powershell", "-noprofile"}, args...)
+}
+
+func withImageConfig(ctx context.Context, i Image) SpecOpts {
+	// TODO: when windows has a snapshotter remove the withImageConfig helper
+	return func(s *specs.Spec) error {
+		return nil
+	}
+}
+
+func withNewRootFS(id string, i Image) NewContainerOpts {
+	// TODO: when windows has a snapshotter remove the withNewRootFS helper
+	return func(ctx context.Context, client *Client, c *containers.Container) error {
+		return nil
+	}
+}