memfs: implement os.FileInfo on Node

12 files changed, 216 insertions, 132 deletions

diff --git a/lib/http/server.go b/lib/http/server.go
index ec6ed701..8fbd5628 100644
--- a/lib/http/server.go
+++ b/lib/http/server.go
@@ -324,7 +324,7 @@ func (srv *Server) getFSNode(reqPath string) (node *memfs.Node) {
 		}
 	}
 
-	if node.Mode.IsDir() {
+	if node.IsDir() {
 		indexHTML := path.Join(reqPath, "index.html")
 		node, e = srv.Memfs.Get(indexHTML)
 		if e != nil {
@@ -366,7 +366,7 @@ func (srv *Server) handleFS(
 	}
 
 	if method == RequestMethodHead {
-		res.Header().Set("Content-Length", strconv.FormatInt(node.Size, 10))
+		res.Header().Set("Content-Length", strconv.FormatInt(node.Size(), 10))
 		res.WriteHeader(http.StatusOK)
 		return
 	}
diff --git a/lib/io/dirwatcher.go b/lib/io/dirwatcher.go
index 341c3bed..db17e9fb 100644
--- a/lib/io/dirwatcher.go
+++ b/lib/io/dirwatcher.go
@@ -104,7 +104,7 @@ func (dw *DirWatcher) Stop() {
 //
 func (dw *DirWatcher) mapSubdirs(node *memfs.Node) {
 	for _, child := range node.Childs {
-		if !child.Mode.IsDir() {
+		if !child.IsDir() {
 			_, err := NewWatcher(child.SysPath, dw.Delay, dw.Callback)
 			if err != nil {
 				log.Println(err)
@@ -123,7 +123,7 @@ func (dw *DirWatcher) mapSubdirs(node *memfs.Node) {
 //
 func (dw *DirWatcher) unmapSubdirs(node *memfs.Node) {
 	for _, child := range node.Childs {
-		if !child.Mode.IsDir() {
+		if !child.IsDir() {
 			continue
 		}
 
@@ -164,7 +164,7 @@ func (dw *DirWatcher) onContentChange(node *memfs.Node) {
 	for x := 0; x < len(node.Childs); x++ {
 		found := false
 		for _, newInfo := range fis {
-			if node.Childs[x].Name == newInfo.Name() {
+			if node.Childs[x].Name() == newInfo.Name() {
 				found = true
 				break
 			}
@@ -174,7 +174,7 @@ func (dw *DirWatcher) onContentChange(node *memfs.Node) {
 				fmt.Printf("lib/io: DirWatcher.onContentChange: deleted %+v\n", node.Childs[x])
 			}
 
-			if node.Childs[x].Mode.IsDir() {
+			if node.Childs[x].IsDir() {
 				dw.unmapSubdirs(node.Childs[x])
 			}
 
@@ -187,7 +187,7 @@ func (dw *DirWatcher) onContentChange(node *memfs.Node) {
 	for _, newInfo := range fis {
 		found := false
 		for _, child := range node.Childs {
-			if newInfo.Name() == child.Name {
+			if newInfo.Name() == child.Name() {
 				found = true
 				break
 			}
@@ -217,7 +217,7 @@ func (dw *DirWatcher) onContentChange(node *memfs.Node) {
 
 		dw.Callback(ns)
 
-		if newChild.Mode.IsDir() {
+		if newChild.IsDir() {
 			dw.dirs[newChild.Path] = newChild
 			dw.mapSubdirs(newChild)
 			dw.onContentChange(newChild)
@@ -326,11 +326,11 @@ func (dw *DirWatcher) start() {
 			dw.onRootCreated()
 			continue
 		}
-		if dw.root.Mode != newDirInfo.Mode() {
+		if dw.root.Mode() != newDirInfo.Mode() {
 			dw.onModified(dw.root, newDirInfo)
 			continue
 		}
-		if dw.root.ModTime.Equal(newDirInfo.ModTime()) {
+		if dw.root.ModTime().Equal(newDirInfo.ModTime()) {
 			dw.processSubdirs()
 			continue
 		}
@@ -356,11 +356,11 @@ func (dw *DirWatcher) processSubdirs() {
 			dw.unmapSubdirs(node)
 			continue
 		}
-		if node.Mode != newDirInfo.Mode() {
+		if node.Mode() != newDirInfo.Mode() {
 			dw.onModified(node, newDirInfo)
 			continue
 		}
-		if node.ModTime.Equal(newDirInfo.ModTime()) {
+		if node.ModTime().Equal(newDirInfo.ModTime()) {
 			continue
 		}
 
diff --git a/lib/io/watcher.go b/lib/io/watcher.go
index 48c5a40e..169e06d8 100644
--- a/lib/io/watcher.go
+++ b/lib/io/watcher.go
@@ -54,7 +54,7 @@ func NewWatcher(path string, d time.Duration, cb WatchCallback) (w *Watcher, err
 	if err != nil {
 		return nil, fmt.Errorf("lib/io: NewWatcher: " + err.Error())
 	}
-	if fi.Mode().IsDir() {
+	if fi.IsDir() {
 		return nil, fmt.Errorf("lib/io: NewWatcher: path is directory")
 	}
 
@@ -108,12 +108,12 @@ func (w *Watcher) start() {
 			w.node = nil
 			return
 		}
-		if w.node.Mode != newInfo.Mode() {
+		if w.node.Mode() != newInfo.Mode() {
 			if debug.Value >= 2 {
 				fmt.Printf("lib/io: Watcher: mode modified %q\n", w.node.SysPath)
 			}
 
-			w.node.Mode = newInfo.Mode()
+			w.node.SetMode(newInfo.Mode())
 			ns := &NodeState{
 				Node:  w.node,
 				State: FileStateModified,
@@ -121,7 +121,7 @@ func (w *Watcher) start() {
 			w.cb(ns)
 			continue
 		}
-		if w.node.ModTime.Equal(newInfo.ModTime()) {
+		if w.node.ModTime().Equal(newInfo.ModTime()) {
 			continue
 		}
 
@@ -129,8 +129,8 @@ func (w *Watcher) start() {
 			fmt.Printf("lib/io: Watcher: content modified %q\n", w.node.SysPath)
 		}
 
-		w.node.ModTime = newInfo.ModTime()
-		w.node.Size = newInfo.Size()
+		w.node.SetModTime(newInfo.ModTime())
+		w.node.SetSize(newInfo.Size())
 
 		ns := &NodeState{
 			Node:  w.node,
diff --git a/lib/io/watcher_test.go b/lib/io/watcher_test.go
index acf9c9d5..b5c2166b 100644
--- a/lib/io/watcher_test.go
+++ b/lib/io/watcher_test.go
@@ -45,11 +45,11 @@ func TestWatcher(t *testing.T) {
 		if exps[x].state != ns.State {
 			log.Fatalf("Got state %d, want %d\n", ns.State, exps[x].state)
 		}
-		if exps[x].mode != ns.Node.Mode {
-			log.Fatalf("Got mode %d, want %d\n", ns.Node.Mode, exps[x].mode)
+		if exps[x].mode != ns.Node.Mode() {
+			log.Fatalf("Got mode %d, want %d\n", ns.Node.Mode(), exps[x].mode)
 		}
-		if exps[x].size != ns.Node.Size {
-			log.Fatalf("Got size %d, want %d\n", ns.Node.Size, exps[x].size)
+		if exps[x].size != ns.Node.Size() {
+			log.Fatalf("Got size %d, want %d\n", ns.Node.Size(), exps[x].size)
 		}
 		x++
 		wg.Done()
diff --git a/lib/memfs/generate_test.go b/lib/memfs/generate_test.go
new file mode 100644
index 00000000..8ec53aa2
--- /dev/null
+++ b/lib/memfs/generate_test.go
@@ -0,0 +1,26 @@
+// Copyright 2019, Shulhan <ms@kilabit.info>. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package memfs
+
+import "testing"
+
+func TestGenerate(t *testing.T) {
+	t.Skip()
+
+	mfs, err := New(nil, nil, true)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = mfs.Mount("testdata")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = mfs.GoGenerate("test", "./generate_test/gen_test.go", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+}
diff --git a/lib/memfs/generate_test/gen_test.go b/lib/memfs/generate_test/gen_test.go
index 3829e7e2..44cbc543 100644
--- a/lib/memfs/generate_test/gen_test.go
+++ b/lib/memfs/generate_test/gen_test.go
@@ -10,12 +10,12 @@ func generate_() *memfs.Node {
 	node := &memfs.Node{
 		SysPath:         "xxx/testdata",
 		Path:            "/",
-		Name:            "/",
 		ContentType:     "",
 		ContentEncoding: "",
-		Mode:            2147484141,
-		Size:            4096,
 	}
+	node.SetMode(2147484141)
+	node.SetName("/")
+	node.SetSize(4096)
 	return node
 }
 
@@ -23,12 +23,12 @@ func generate_direct() *memfs.Node {
 	node := &memfs.Node{
 		SysPath:         "xxx/testdata/direct",
 		Path:            "/direct",
-		Name:            "direct",
 		ContentType:     "",
 		ContentEncoding: "",
-		Mode:            2147484141,
-		Size:            0,
 	}
+	node.SetMode(2147484141)
+	node.SetName("direct")
+	node.SetSize(0)
 	return node
 }
 
@@ -36,12 +36,12 @@ func generate_direct_add() *memfs.Node {
 	node := &memfs.Node{
 		SysPath:         "xxx/testdata/direct/add",
 		Path:            "/direct/add",
-		Name:            "add",
 		ContentType:     "",
 		ContentEncoding: "",
-		Mode:            2147484141,
-		Size:            0,
 	}
+	node.SetMode(2147484141)
+	node.SetName("add")
+	node.SetSize(0)
 	return node
 }
 
@@ -49,16 +49,16 @@ func generate_direct_add_file() *memfs.Node {
 	node := &memfs.Node{
 		SysPath:         "xxx/testdata/direct/add/file",
 		Path:            "/direct/add/file",
-		Name:            "file",
 		ContentType:     "text/plain; charset=utf-8",
 		ContentEncoding: "",
-		Mode:            420,
-		Size:            22,
 		V: []byte{
 			84, 101, 115, 116, 32, 100, 105, 114, 101, 99, 116, 32, 97, 100, 100, 32,
 			102, 105, 108, 101, 46, 10,
 		},
 	}
+	node.SetMode(420)
+	node.SetName("file")
+	node.SetSize(22)
 	return node
 }
 
@@ -66,29 +66,29 @@ func generate_direct_add_file2() *memfs.Node {
 	node := &memfs.Node{
 		SysPath:         "xxx/testdata/direct/add/file2",
 		Path:            "/direct/add/file2",
-		Name:            "file2",
 		ContentType:     "text/plain; charset=utf-8",
 		ContentEncoding: "",
-		Mode:            420,
-		Size:            24,
 		V: []byte{
 			84, 101, 115, 116, 32, 100, 105, 114, 101, 99, 116, 32, 97, 100, 100, 32,
 			102, 105, 108, 101, 32, 50, 46, 10,
 		},
 	}
+	node.SetMode(420)
+	node.SetName("file2")
+	node.SetSize(24)
 	return node
 }
 
 func generate_exclude() *memfs.Node {
 	node := &memfs.Node{
-		SysPath:         "/testdata/exclude",
+		SysPath:         "xxx/testdata/exclude",
 		Path:            "/exclude",
-		Name:            "exclude",
 		ContentType:     "",
 		ContentEncoding: "",
-		Mode:            2147484141,
-		Size:            0,
 	}
+	node.SetMode(2147484141)
+	node.SetName("exclude")
+	node.SetSize(0)
 	return node
 }
 
@@ -96,15 +96,15 @@ func generate_exclude_index_css() *memfs.Node {
 	node := &memfs.Node{
 		SysPath:         "xxx/testdata/exclude/index.css",
 		Path:            "/exclude/index.css",
-		Name:            "index.css",
 		ContentType:     "text/css; charset=utf-8",
 		ContentEncoding: "",
-		Mode:            420,
-		Size:            9,
 		V: []byte{
 			98, 111, 100, 121, 32, 123, 10, 125, 10,
 		},
 	}
+	node.SetMode(420)
+	node.SetName("index.css")
+	node.SetSize(9)
 	return node
 }
 
@@ -112,15 +112,15 @@ func generate_exclude_index_html() *memfs.Node {
 	node := &memfs.Node{
 		SysPath:         "xxx/testdata/exclude/index.html",
 		Path:            "/exclude/index.html",
-		Name:            "index.html",
 		ContentType:     "text/html; charset=utf-8",
 		ContentEncoding: "",
-		Mode:            420,
-		Size:            14,
 		V: []byte{
 			60, 104, 116, 109, 108, 62, 60, 47, 104, 116, 109, 108, 62, 10,
 		},
 	}
+	node.SetMode(420)
+	node.SetName("index.html")
+	node.SetSize(14)
 	return node
 }
 
@@ -128,15 +128,15 @@ func generate_exclude_index_js() *memfs.Node {
 	node := &memfs.Node{
 		SysPath:         "xxx/testdata/exclude/index.js",
 		Path:            "/exclude/index.js",
-		Name:            "index.js",
 		ContentType:     "application/javascript",
 		ContentEncoding: "",
-		Mode:            420,
-		Size:            16,
 		V: []byte{
 			102, 117, 110, 99, 116, 105, 111, 110, 32, 88, 40, 41, 32, 123, 125, 10,
 		},
 	}
+	node.SetMode(420)
+	node.SetName("index.js")
+	node.SetSize(16)
 	return node
 }
 
@@ -144,12 +144,12 @@ func generate_include() *memfs.Node {
 	node := &memfs.Node{
 		SysPath:         "xxx/testdata/include",
 		Path:            "/include",
-		Name:            "include",
 		ContentType:     "",
 		ContentEncoding: "",
-		Mode:            2147484141,
-		Size:            0,
 	}
+	node.SetMode(2147484141)
+	node.SetName("include")
+	node.SetSize(0)
 	return node
 }
 
@@ -157,15 +157,15 @@ func generate_include_index_css() *memfs.Node {
 	node := &memfs.Node{
 		SysPath:         "xxx/testdata/include/index.css",
 		Path:            "/include/index.css",
-		Name:            "index.css",
 		ContentType:     "text/css; charset=utf-8",
 		ContentEncoding: "",
-		Mode:            420,
-		Size:            9,
 		V: []byte{
 			98, 111, 100, 121, 32, 123, 10, 125, 10,
 		},
 	}
+	node.SetMode(420)
+	node.SetName("index.css")
+	node.SetSize(9)
 	return node
 }
 
@@ -173,15 +173,15 @@ func generate_include_index_html() *memfs.Node {
 	node := &memfs.Node{
 		SysPath:         "xxx/testdata/include/index.html",
 		Path:            "/include/index.html",
-		Name:            "index.html",
 		ContentType:     "text/html; charset=utf-8",
 		ContentEncoding: "",
-		Mode:            420,
-		Size:            14,
 		V: []byte{
 			60, 104, 116, 109, 108, 62, 60, 47, 104, 116, 109, 108, 62, 10,
 		},
 	}
+	node.SetMode(420)
+	node.SetName("index.html")
+	node.SetSize(14)
 	return node
 }
 
@@ -189,15 +189,15 @@ func generate_include_index_js() *memfs.Node {
 	node := &memfs.Node{
 		SysPath:         "xxx/testdata/include/index.js",
 		Path:            "/include/index.js",
-		Name:            "index.js",
 		ContentType:     "application/javascript",
 		ContentEncoding: "",
-		Mode:            420,
-		Size:            16,
 		V: []byte{
 			102, 117, 110, 99, 116, 105, 111, 110, 32, 88, 40, 41, 32, 123, 125, 10,
 		},
 	}
+	node.SetMode(420)
+	node.SetName("index.js")
+	node.SetSize(16)
 	return node
 }
 
@@ -205,15 +205,15 @@ func generate_index_css() *memfs.Node {
 	node := &memfs.Node{
 		SysPath:         "xxx/testdata/index.css",
 		Path:            "/index.css",
-		Name:            "index.css",
 		ContentType:     "text/css; charset=utf-8",
 		ContentEncoding: "",
-		Mode:            420,
-		Size:            9,
 		V: []byte{
 			98, 111, 100, 121, 32, 123, 10, 125, 10,
 		},
 	}
+	node.SetMode(420)
+	node.SetName("index.css")
+	node.SetSize(9)
 	return node
 }
 
@@ -221,15 +221,15 @@ func generate_index_html() *memfs.Node {
 	node := &memfs.Node{
 		SysPath:         "xxx/testdata/index.html",
 		Path:            "/index.html",
-		Name:            "index.html",
 		ContentType:     "text/html; charset=utf-8",
 		ContentEncoding: "",
-		Mode:            420,
-		Size:            14,
 		V: []byte{
 			60, 104, 116, 109, 108, 62, 60, 47, 104, 116, 109, 108, 62, 10,
 		},
 	}
+	node.SetMode(420)
+	node.SetName("index.html")
+	node.SetSize(14)
 	return node
 }
 
@@ -237,15 +237,15 @@ func generate_index_js() *memfs.Node {
 	node := &memfs.Node{
 		SysPath:         "xxx/testdata/index.js",
 		Path:            "/index.js",
-		Name:            "index.js",
 		ContentType:     "application/javascript",
 		ContentEncoding: "",
-		Mode:            420,
-		Size:            16,
 		V: []byte{
 			102, 117, 110, 99, 116, 105, 111, 110, 32, 88, 40, 41, 32, 123, 125, 10,
 		},
 	}
+	node.SetMode(420)
+	node.SetName("index.js")
+	node.SetSize(16)
 	return node
 }
 
@@ -253,16 +253,16 @@ func generate_plain() *memfs.Node {
 	node := &memfs.Node{
 		SysPath:         "xxx/testdata/plain",
 		Path:            "/plain",
-		Name:            "plain",
 		ContentType:     "text/plain; charset=utf-8",
 		ContentEncoding: "",
-		Mode:            420,
-		Size:            22,
 		V: []byte{
 			84, 104, 105, 115, 32, 105, 115, 32, 97, 32, 112, 108, 97, 105, 110, 32,
 			116, 101, 120, 116, 46, 10,
 		},
 	}
+	node.SetMode(420)
+	node.SetName("plain")
+	node.SetSize(22)
 	return node
 }
 
diff --git a/lib/memfs/generate_test/memfs_generate_test.go b/lib/memfs/generate_test/memfs_generate_test.go
index 213d5a0d..020d0cfa 100644
--- a/lib/memfs/generate_test/memfs_generate_test.go
+++ b/lib/memfs/generate_test/memfs_generate_test.go
@@ -22,6 +22,25 @@ func TestGeneratePathNode(t *testing.T) {
 
 	wd = strings.TrimSuffix(wd, "generate_test")
 
+	expRoot := &memfs.Node{
+		SysPath: filepath.Join(wd, "testdata"),
+		Path:    "/",
+	}
+	expRoot.SetMode(2147484141)
+	expRoot.SetName("/")
+	expRoot.SetSize(4096)
+
+	expExcludeIndexHTML := &memfs.Node{
+		SysPath:     filepath.Join(wd, "testdata", "exclude", "index.html"),
+		Path:        "/exclude/index.html",
+		ContentType: "text/html; charset=utf-8",
+		V:           []byte("<html></html>\n"),
+	}
+
+	expExcludeIndexHTML.SetMode(420) //nolint: staticcheck
+	expExcludeIndexHTML.SetName("index.html")
+	expExcludeIndexHTML.SetSize(14)
+
 	cases := []struct {
 		path     string
 		exp      *memfs.Node
@@ -31,25 +50,10 @@ func TestGeneratePathNode(t *testing.T) {
 		expError: "file does not exist",
 	}, {
 		path: "/",
-		exp: &memfs.Node{
-			SysPath:     filepath.Join(wd, "testdata"),
-			Path:        "/",
-			Name:        "/",
-			ContentType: "",
-			Mode:        2147484141,
-			Size:        4096,
-		},
+		exp:  expRoot,
 	}, {
 		path: "/exclude/index.html",
-		exp: &memfs.Node{
-			SysPath:     filepath.Join(wd, "testdata", "exclude", "index.html"),
-			Path:        "/exclude/index.html",
-			Name:        "index.html",
-			ContentType: "text/html; charset=utf-8",
-			Mode:        420,
-			Size:        14,
-			V:           []byte("<html></html>\n"),
-		},
+		exp:  expExcludeIndexHTML,
 	}}
 
 	mfs, err := memfs.New(nil, nil, true)
diff --git a/lib/memfs/memfs.go b/lib/memfs/memfs.go
index 72384d96..e6f38629 100644
--- a/lib/memfs/memfs.go
+++ b/lib/memfs/memfs.go
@@ -181,7 +181,7 @@ func (mfs *MemFS) ContentEncode(encoding string) (err error) {
 	}
 
 	for _, node := range mfs.pn.v {
-		if node.Mode.IsDir() || len(node.V) == 0 {
+		if node.mode.IsDir() || len(node.V) == 0 {
 			continue
 		}
 
@@ -199,7 +199,7 @@ func (mfs *MemFS) ContentEncode(encoding string) (err error) {
 		copy(node.V, buf.Bytes())
 
 		node.ContentEncoding = encoding
-		node.Size = int64(len(node.V))
+		node.size = int64(len(node.V))
 
 		buf.Reset()
 
@@ -357,10 +357,10 @@ func (mfs *MemFS) createRoot(dir string, f *os.File) error {
 	mfs.root = &Node{
 		SysPath: dir,
 		Path:    "/",
-		Name:    "/",
-		ModTime: fi.ModTime(),
-		Mode:    fi.Mode(),
-		Size:    fi.Size(),
+		name:    "/",
+		modTime: fi.ModTime(),
+		mode:    fi.Mode(),
+		size:    fi.Size(),
 		V:       nil,
 		Parent:  nil,
 	}
@@ -384,7 +384,7 @@ func (mfs *MemFS) scanDir(parent *Node, f *os.File) error {
 		if leaf == nil {
 			continue
 		}
-		if !leaf.Mode.IsDir() {
+		if !leaf.mode.IsDir() {
 			continue
 		}
 
@@ -483,7 +483,7 @@ func (mfs *MemFS) isIncluded(sysPath string, mode os.FileMode) bool {
 //
 func (mfs *MemFS) pruneEmptyDirs() {
 	for k, node := range mfs.pn.v {
-		if !node.Mode.IsDir() {
+		if !node.mode.IsDir() {
 			continue
 		}
 		if len(node.Childs) != 0 {
@@ -550,7 +550,7 @@ func (mfs *MemFS) Search(words []string, snippetLen int) (results []SearchResult
 	}
 
 	for _, node := range mfs.pn.v {
-		if node.Mode.IsDir() {
+		if node.mode.IsDir() {
 			continue
 		}
 
diff --git a/lib/memfs/memfs_test.go b/lib/memfs/memfs_test.go
index a289ef32..9a1a0657 100644
--- a/lib/memfs/memfs_test.go
+++ b/lib/memfs/memfs_test.go
@@ -33,9 +33,9 @@ func TestAddFile(t *testing.T) {
 		exp: &Node{
 			SysPath:     "testdata/direct/add/file",
 			Path:        "testdata/direct/add/file",
-			Name:        "file",
+			name:        "file",
 			ContentType: "text/plain; charset=utf-8",
-			Size:        22,
+			size:        22,
 			V:           []byte("Test direct add file.\n"),
 		},
 	}, {
@@ -44,9 +44,9 @@ func TestAddFile(t *testing.T) {
 		exp: &Node{
 			SysPath:     "testdata/direct/add/file2",
 			Path:        "testdata/direct/add/file2",
-			Name:        "file2",
+			name:        "file2",
 			ContentType: "text/plain; charset=utf-8",
-			Size:        24,
+			size:        24,
 			V:           []byte("Test direct add file 2.\n"),
 		},
 	}}
@@ -71,8 +71,8 @@ func TestAddFile(t *testing.T) {
 		}
 
 		if got != nil {
-			got.ModTime = time.Time{}
-			got.Mode = 0
+			got.modTime = time.Time{}
+			got.mode = 0
 			got.Parent = nil
 			got.Childs = nil
 		}
@@ -86,8 +86,8 @@ func TestAddFile(t *testing.T) {
 			}
 
 			if got != nil {
-				got.ModTime = time.Time{}
-				got.Mode = 0
+				got.modTime = time.Time{}
+				got.mode = 0
 				got.Parent = nil
 				got.Childs = nil
 			}
@@ -175,7 +175,7 @@ func TestGet(t *testing.T) {
 			continue
 		}
 
-		if got.Size <= MaxFileSize {
+		if got.size <= MaxFileSize {
 			test.Assert(t, "node.V", c.expV, got.V, true)
 		}
 
diff --git a/lib/memfs/node.go b/lib/memfs/node.go
index ff3925c2..d7a600ce 100644
--- a/lib/memfs/node.go
+++ b/lib/memfs/node.go
@@ -28,14 +28,16 @@ var (
 // Node represent a single file.
 //
 type Node struct {
+	os.FileInfo
+
 	SysPath         string      // The original file path in system.
 	Path            string      // Absolute file path in memory.
-	Name            string      // File name.
+	name            string      // File name.
 	ContentType     string      // File type per MIME, for example "application/json".
 	ContentEncoding string      // File type encoding, for example "gzip".
-	ModTime         time.Time   // ModTime contains file modification time.
-	Mode            os.FileMode // File mode.
-	Size            int64       // Size of file.
+	modTime         time.Time   // ModTime contains file modification time.
+	mode            os.FileMode // File mode.
+	size            int64       // Size of file.
 	V               []byte      // Content of file.
 	Parent          *Node       // Pointer to parent directory.
 	Childs          []*Node     // List of files in directory.
@@ -70,17 +72,17 @@ func NewNode(parent *Node, fi os.FileInfo, withContent bool) (node *Node, err er
 	node = &Node{
 		SysPath: sysPath,
 		Path:    absPath,
-		Name:    fi.Name(),
-		ModTime: fi.ModTime(),
-		Mode:    fi.Mode(),
-		Size:    fi.Size(),
+		name:    fi.Name(),
+		modTime: fi.ModTime(),
+		mode:    fi.Mode(),
+		size:    fi.Size(),
 		V:       nil,
 		Parent:  parent,
 		Childs:  make([]*Node, 0),
 	}
 
-	if node.Mode.IsDir() || !withContent {
-		node.Size = 0
+	if node.mode.IsDir() || !withContent {
+		node.size = 0
 		return node, nil
 	}
 
@@ -142,6 +144,22 @@ func (leaf *Node) Decode() ([]byte, error) {
 	return leaf.plainv, nil
 }
 
+func (leaf *Node) IsDir() bool {
+	return leaf.mode.IsDir()
+}
+
+func (leaf *Node) ModTime() time.Time {
+	return leaf.modTime
+}
+
+func (leaf *Node) Mode() os.FileMode {
+	return leaf.mode
+}
+
+func (leaf *Node) Name() string {
+	return leaf.name
+}
+
 //
 // Read the content of node into p.
 //
@@ -151,7 +169,7 @@ func (leaf *Node) Read(p []byte) (n int, err error) {
 	if len(p) == 0 {
 		return 0, nil
 	}
-	if leaf.off >= leaf.Size {
+	if leaf.off >= leaf.size {
 		return 0, io.EOF
 	}
 	n = copy(p, leaf.V[leaf.off:])
@@ -172,7 +190,7 @@ func (leaf *Node) Seek(offset int64, whence int) (int64, error) {
 	case io.SeekCurrent:
 		offset += leaf.off
 	case io.SeekEnd:
-		offset += leaf.Size
+		offset += leaf.size
 	default:
 		return 0, errWhence
 	}
@@ -184,6 +202,42 @@ func (leaf *Node) Seek(offset int64, whence int) (int64, error) {
 }
 
 //
+// SetModTime set the file modification time.
+//
+func (leaf *Node) SetModTime(modTime time.Time) {
+	leaf.modTime = modTime
+}
+
+//
+// SetMode set the mode of file.
+//
+func (leaf *Node) SetMode(mode os.FileMode) {
+	leaf.mode = mode
+}
+
+//
+// SetName set the name of file.
+//
+func (leaf *Node) SetName(name string) {
+	leaf.name = name
+}
+
+//
+// SetSize set the file size.
+//
+func (leaf *Node) SetSize(size int64) {
+	leaf.size = size
+}
+
+func (leaf *Node) Size() int64 {
+	return leaf.size
+}
+
+func (leaf *Node) Sys() interface{} {
+	return leaf
+}
+
+//
 // removeChild remove a children node from list.  If child is not exist, it
 // will return nil.
 //
@@ -226,13 +280,13 @@ func (leaf *Node) update(newInfo os.FileInfo, withContent bool) (err error) {
 		}
 	}
 
-	if leaf.Mode != newInfo.Mode() {
-		leaf.Mode = newInfo.Mode()
+	if leaf.mode != newInfo.Mode() {
+		leaf.mode = newInfo.Mode()
 		return nil
 	}
 
-	leaf.ModTime = newInfo.ModTime()
-	leaf.Size = newInfo.Size()
+	leaf.modTime = newInfo.ModTime()
+	leaf.size = newInfo.Size()
 
 	if !withContent || newInfo.IsDir() {
 		return nil
@@ -245,7 +299,7 @@ func (leaf *Node) update(newInfo os.FileInfo, withContent bool) (err error) {
 // updateContent read the content of file.
 //
 func (leaf *Node) updateContent() (err error) {
-	if leaf.Size > MaxFileSize {
+	if leaf.size > MaxFileSize {
 		return nil
 	}
 
@@ -258,7 +312,7 @@ func (leaf *Node) updateContent() (err error) {
 }
 
 func (leaf *Node) updateContentType() error {
-	leaf.ContentType = mime.TypeByExtension(path.Ext(leaf.Name))
+	leaf.ContentType = mime.TypeByExtension(path.Ext(leaf.name))
 	if len(leaf.ContentType) > 0 {
 		return nil
 	}
diff --git a/lib/memfs/node_test.go b/lib/memfs/node_test.go
index 22acec80..e2eb89fd 100644
--- a/lib/memfs/node_test.go
+++ b/lib/memfs/node_test.go
@@ -13,7 +13,7 @@ import (
 
 func TestNode_Read(t *testing.T) {
 	node := &Node{
-		Size: 3,
+		size: 3,
 		V:    []byte("123"),
 	}
 
@@ -63,7 +63,7 @@ func TestNode_Read(t *testing.T) {
 
 func TestNode_Seek(t *testing.T) {
 	node := &Node{
-		Size: 3,
+		size: 3,
 		V:    []byte("123"),
 	}
 
diff --git a/lib/memfs/template.go b/lib/memfs/template.go
index b96fa48d..fa4c46d9 100644
--- a/lib/memfs/template.go
+++ b/lib/memfs/template.go
@@ -50,17 +50,17 @@ func generate{{ funcname .Path | printf "%s"}}() *memfs.Node {
 	node := &memfs.Node{
 		SysPath:         "{{.SysPath}}",
 		Path:            "{{.Path}}",
-		Name:            "{{.Name}}",
 		ContentType:     "{{.ContentType}}",
 		ContentEncoding: "{{.ContentEncoding}}",
-		Mode:            {{printf "%d" .Mode}},
-		Size:            {{.Size}},
 {{- if .V }}
 		V: []byte{
 			{{range $x, $c := .V}}{{ if maxline $x }}{{ printf "\n\t\t\t" }}{{else if $x}} {{end}}{{ printf "%d," $c }}{{end}}
 		},
 {{- end }}
 	}
+	node.SetMode({{printf "%d" .Mode}})
+	node.SetName("{{.Name}}")
+	node.SetSize({{.Size}})
 	return node
 }
 {{end}}