Declared a helper struct for sample tests.

samples/testing.go

+// 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.
+
+package samples
+
+import (
+	"github.com/googlecloudplatform/gcsfuse/timeutil"
+	"github.com/jacobsa/fuse"
+)
+
+// A struct that implements common behavior needed by tests in the samples/
+// directory. Use it as an anonymous member of your test fixture, calling its
+// Initialize method from your SetUp method and its Destroy method from your
+// TearDown method.
+type SampleTest struct {
+	// A clock with a fixed initial time. The test's set up method may use this
+	// to wire the file system with a clock, if desired.
+	Clock timeutil.SimulatedClock
+
+	// The directory at which the file system is mounted.
+	Dir string
+}
+
+// Mount the supplied file system and initialize the exported fields of the
+// struct. Panics on error.
+func (st *SampleTest) Initialize(fs fuse.FileSystem)
+
+// Unmount the file system and clean up. Panics on error.
+func (st *SampleTest) Destroy()