1 files changed, 24 insertions, 0 deletions
diff --git a/pkg/sentry/fs/file_test.go b/pkg/sentry/fs/file_test.go
new file mode 100644
index 000000000..18aee7101
--- /dev/null
+++ b/pkg/sentry/fs/file_test.go
@@ -0,0 +1,24 @@
+// 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 fs
+
+import "io"
+
+var (
+	_ = io.Reader(&FileReader{})
+	_ = io.ReaderAt(&FileReader{})
+	_ = io.Writer(&FileWriter{})
+	_ = io.WriterAt(&FileWriter{})
+)