diff --git a/samples/memfs/posix_test.go b/samples/memfs/posix_test.go
new file mode 100644
index 0000000..a804999
--- /dev/null
+++ b/samples/memfs/posix_test.go
@@ -0,0 +1,51 @@
+// Copyright 2015 Google Inc. All Rights Reserved.
+//
+// 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.
+
+// Tests for the behavior of os.File objects on plain old posix file systems,
+// for use in verifying the intended behavior of memfs.
+
+package memfs_test
+
+import (
+	"testing"
+
+	. "github.com/jacobsa/ogletest"
+)
+
+func TestPosix(t *testing.T) { RunTests(t) }
+
+////////////////////////////////////////////////////////////////////////
+// Boilerplate
+////////////////////////////////////////////////////////////////////////
+
+type PosixTest struct {
+	dir string
+}
+
+var _ SetUpInterface = &PosixTest{}
+var _ TearDownInterface = &PosixTest{}
+
+func init() { RegisterTestSuite(&PosixTest{}) }
+
+func (t *PosixTest) SetUp(ti *TestInfo)
+
+func (t *PosixTest) TearDown()
+
+////////////////////////////////////////////////////////////////////////
+// Test functions
+////////////////////////////////////////////////////////////////////////
+
+func (t *PosixTest) DoesFoo() {
+	AssertTrue(false, "TODO")
+}