diff --git a/pkging/costello/costello.go b/pkging/costello/costello.go
index eda283e..ebad4ed 100644
--- a/pkging/costello/costello.go
+++ b/pkging/costello/costello.go
@@ -1,52 +1,33 @@
 package costello
 
 import (
-	"io"
-	"os"
-	"path/filepath"
-	"strings"
+	"testing"
 
 	"github.com/markbates/pkger/pkging"
+	"github.com/stretchr/testify/require"
 )
 
-func LoadRef(ref *Ref, pkg pkging.Pkger) error {
-	return filepath.Walk(ref.Dir, func(path string, info os.FileInfo, err error) error {
-		if err != nil {
-			return err
-		}
-		of, err := os.Open(path)
-		if err != nil {
-			return err
-		}
-		defer of.Close()
+type AllFn func(ref *Ref) (pkging.Pkger, error)
 
-		if a, ok := pkg.(pkging.Adder); ok {
-			return a.Add(of)
-		}
+func All(t *testing.T, fn AllFn) {
+	r := require.New(t)
+	type tf func(*testing.T, pkging.Pkger)
 
-		path = strings.TrimPrefix(path, ref.Dir)
+	tests := map[string]tf{
+		"OpenTest": OpenTest,
+		"StatTest": StatTest,
+	}
 
-		pt, err := pkg.Parse(path)
-		if err != nil {
-			return err
-		}
+	ref, err := NewRef()
+	r.NoError(err)
 
-		if err := pkg.MkdirAll(filepath.Dir(pt.Name), 0755); err != nil {
-			return err
-		}
+	for n, tt := range tests {
+		t.Run(n, func(st *testing.T) {
+			pkg, err := fn(ref)
+			r.NoError(err)
 
-		if info.IsDir() {
-			return nil
-		}
-		f, err := pkg.Create(pt.String())
-		if err != nil {
-			return err
-		}
-		defer f.Close()
+			tt(st, pkg)
+		})
+	}
 
-		if _, err := io.Copy(f, of); err != nil {
-			return err
-		}
-		return nil
-	})
 }
diff --git a/pkging/costello/load_ref.go b/pkging/costello/load_ref.go
new file mode 100644
index 0000000..eda283e
--- /dev/null
+++ b/pkging/costello/load_ref.go
@@ -0,0 +1,52 @@
+package costello
+
+import (
+	"io"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/markbates/pkger/pkging"
+)
+
+func LoadRef(ref *Ref, pkg pkging.Pkger) error {
+	return filepath.Walk(ref.Dir, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		of, err := os.Open(path)
+		if err != nil {
+			return err
+		}
+		defer of.Close()
+
+		if a, ok := pkg.(pkging.Adder); ok {
+			return a.Add(of)
+		}
+
+		path = strings.TrimPrefix(path, ref.Dir)
+
+		pt, err := pkg.Parse(path)
+		if err != nil {
+			return err
+		}
+
+		if err := pkg.MkdirAll(filepath.Dir(pt.Name), 0755); err != nil {
+			return err
+		}
+
+		if info.IsDir() {
+			return nil
+		}
+		f, err := pkg.Create(pt.String())
+		if err != nil {
+			return err
+		}
+		defer f.Close()
+
+		if _, err := io.Copy(f, of); err != nil {
+			return err
+		}
+		return nil
+	})
+}
diff --git a/pkging/costello/open.go b/pkging/costello/open.go
index 563b3eb..ea12c82 100644
--- a/pkging/costello/open.go
+++ b/pkging/costello/open.go
@@ -14,10 +14,10 @@ import (
 func OpenTest(t *testing.T, pkg pkging.Pkger) {
 	r := require.New(t)
 
-	app, err := NewRef()
+	ref, err := NewRef()
 	r.NoError(err)
 
-	osf, err := os.Open(filepath.Join(app.Dir, "go.mod"))
+	osf, err := os.Open(filepath.Join(ref.Dir, "go.mod"))
 	r.NoError(err)
 
 	osi, err := osf.Stat()
@@ -27,6 +27,8 @@ func OpenTest(t *testing.T, pkg pkging.Pkger) {
 	r.NoError(err)
 	r.NoError(osf.Close())
 
+	r.NoError(LoadRef(ref, pkg))
+
 	pf, err := pkg.Open("/go.mod")
 	r.NoError(err)
 
diff --git a/pkging/costello/stat.go b/pkging/costello/stat.go
index 15b8b0f..442788b 100644
--- a/pkging/costello/stat.go
+++ b/pkging/costello/stat.go
@@ -1 +1,30 @@
 package costello
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"github.com/markbates/pkger/pkging"
+	"github.com/stretchr/testify/require"
+)
+
+func StatTest(t *testing.T, pkg pkging.Pkger) {
+	r := require.New(t)
+
+	ref, err := NewRef()
+	r.NoError(err)
+
+	osi, err := os.Stat(filepath.Join(ref.Dir, "go.mod"))
+	r.NoError(err)
+
+	r.NoError(LoadRef(ref, pkg))
+	psi, err := pkg.Stat("/go.mod")
+	r.NoError(err)
+
+	r.Equal(osi.Name(), psi.Name())
+	r.Equal(osi.Mode(), psi.Mode())
+	r.Equal(osi.Size(), psi.Size())
+	r.Equal(osi.ModTime().Format(time.RFC3339), psi.ModTime().Format(time.RFC3339))
+}
diff --git a/pkging/mem/mem_test.go b/pkging/mem/mem_test.go
index 2082dc0..e18817f 100644
--- a/pkging/mem/mem_test.go
+++ b/pkging/mem/mem_test.go
@@ -4,28 +4,12 @@ import (
 	"testing"
 
 	"github.com/markbates/pkger/pkging"
+	"github.com/markbates/pkger/pkging/costello"
 	"github.com/markbates/pkger/pkging/mem"
-	"github.com/markbates/pkger/pkging/pkgtest"
 )
 
 func Test_Pkger(t *testing.T) {
-	t.SkipNow()
-	suite, err := pkgtest.NewSuite("memos", func() (pkging.Pkger, error) {
-		app, err := pkgtest.App()
-		if err != nil {
-			return nil, err
-		}
-
-		pkg, err := mem.New(app.Info)
-		if err != nil {
-			return nil, err
-		}
-
-		return pkg, nil
+	costello.All(t, func(ref *costello.Ref) (pkging.Pkger, error) {
+		return mem.New(ref.Info)
 	})
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	suite.Test(t)
 }
diff --git a/pkging/mem/create_test.go b/pkging/mem/open_test.go
similarity index 69%
rename from pkging/mem/create_test.go
rename to pkging/mem/open_test.go
index 4ee879b..d3f25a5 100644
--- a/pkging/mem/create_test.go
+++ b/pkging/mem/open_test.go
@@ -10,13 +10,10 @@ import (
 func Test_Pkger_Open(t *testing.T) {
 	r := require.New(t)
 
-	app, err := costello.NewRef()
+	ref, err := costello.NewRef()
 	r.NoError(err)
 
-	pkg, err := New(app.Info)
-	r.NoError(err)
-
-	err = costello.LoadRef(app, pkg)
+	pkg, err := New(ref.Info)
 	r.NoError(err)
 
 	costello.OpenTest(t, pkg)
diff --git a/pkging/mem/stat_test.go b/pkging/mem/stat_test.go
new file mode 100644
index 0000000..4bf9e89
--- /dev/null
+++ b/pkging/mem/stat_test.go
@@ -0,0 +1,20 @@
+package mem
+
+import (
+	"testing"
+
+	"github.com/markbates/pkger/pkging/costello"
+	"github.com/stretchr/testify/require"
+)
+
+func Test_Pkger_Stat(t *testing.T) {
+	r := require.New(t)
+
+	ref, err := costello.NewRef()
+	r.NoError(err)
+
+	pkg, err := New(ref.Info)
+	r.NoError(err)
+
+	costello.StatTest(t, pkg)
+}