Work In Progress: fix devmapper plugin, first independent test passes.

Upstream-commit: d64df7c7659560d520a7d8ad8987083e4d52cefc
Component: engine

components/engine/devmapper/plugin_test.go

@@ -0,0 +1,61 @@
+package devmapper
+
+import (
+	"io/ioutil"
+	_ "os"
+	"testing"
+)
+
+type TestImage struct {
+	id	string
+	path	string
+}
+
+func (img *TestImage) ID() string {
+	return img.id
+}
+
+func (img *TestImage) Path() string {
+	return img.path
+}
+
+func (img *TestImage) Parent() (Image, error) {
+	return nil, nil
+}
+
+
+
+func mkTestImage(t *testing.T) Image {
+	return &TestImage{
+		path:	mkTestDirectory(t),
+		id:	"4242",
+	}
+}
+
+func mkTestDirectory(t *testing.T) string {
+	dir, err := ioutil.TempDir("", "docker-test-devmapper-")
+	if err != nil {
+		t.Fatal(err)
+	}
+	return dir
+}
+
+func TestInit(t *testing.T) {
+	home := mkTestDirectory(t)
+	// defer os.RemoveAll(home)
+	plugin, err := Init(home)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer func() {
+		return
+		if err := plugin.Cleanup(); err != nil {
+			t.Fatal(err)
+		}
+	}()
+	img := mkTestImage(t)
+	// defer os.RemoveAll(img.(*TestImage).path)
+	if err := plugin.Create(img, nil); err != nil {
+		t.Fatal(err)
+	}
+}