1 files changed, 79 insertions, 0 deletions
diff --git a/pkg/sentry/fs/ramfs/tree_test.go b/pkg/sentry/fs/ramfs/tree_test.go
new file mode 100644
index 000000000..68e2929d5
--- /dev/null
+++ b/pkg/sentry/fs/ramfs/tree_test.go
@@ -0,0 +1,79 @@
+// Copyright 2018 Google Inc.
+//
+// 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 ramfs
+
+import (
+	"testing"
+
+	"gvisor.googlesource.com/gvisor/pkg/sentry/context/contexttest"
+	"gvisor.googlesource.com/gvisor/pkg/sentry/fs"
+)
+
+func TestMakeDirectoryTree(t *testing.T) {
+	mount := fs.NewNonCachingMountSource(nil, fs.MountSourceFlags{})
+
+	for _, test := range []struct {
+		name    string
+		subdirs []string
+	}{
+		{
+			name: "abs paths",
+			subdirs: []string{
+				"/tmp",
+				"/tmp/a/b",
+				"/tmp/a/c/d",
+				"/tmp/c",
+				"/proc",
+				"/dev/a/b",
+				"/tmp",
+			},
+		},
+		{
+			name: "rel paths",
+			subdirs: []string{
+				"tmp",
+				"tmp/a/b",
+				"tmp/a/c/d",
+				"tmp/c",
+				"proc",
+				"dev/a/b",
+				"tmp",
+			},
+		},
+	} {
+		ctx := contexttest.Context(t)
+		tree, err := MakeDirectoryTree(ctx, mount, test.subdirs)
+		if err != nil {
+			t.Errorf("%s: failed to make ramfs tree, got error %v, want nil", test.name, err)
+			continue
+		}
+
+		// Expect to be able to find each of the paths.
+		mm, err := fs.NewMountNamespace(ctx, tree)
+		if err != nil {
+			t.Errorf("%s: failed to create mount manager: %v", test.name, err)
+			continue
+		}
+		root := mm.Root()
+		defer mm.DecRef()
+
+		for _, p := range test.subdirs {
+			if _, err := mm.FindInode(ctx, root, nil, p, 0); err != nil {
+				t.Errorf("%s: failed to find node %s: %v", test.name, p, err)
+				break
+			}
+		}
+	}
+}