245 lines
5.8 KiB
Go
245 lines
5.8 KiB
Go
// Copyright 2015 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cachingfs_test
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import (
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"io/ioutil"
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"log"
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"os"
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"path"
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"strings"
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"syscall"
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"testing"
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"time"
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"github.com/jacobsa/fuse"
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"github.com/jacobsa/fuse/samples/cachingfs"
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"github.com/jacobsa/gcsfuse/timeutil"
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. "github.com/jacobsa/ogletest"
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"golang.org/x/net/context"
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)
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func TestHelloFS(t *testing.T) { RunTests(t) }
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////////////////////////////////////////////////////////////////////////
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// Boilerplate
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////////////////////////////////////////////////////////////////////////
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type CachingFSTest struct {
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dir string
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fs cachingfs.CachingFS
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mfs *fuse.MountedFileSystem
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initialMtime time.Time
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}
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var _ TearDownInterface = &CachingFSTest{}
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func (t *CachingFSTest) setUp(
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lookupEntryTimeout time.Duration,
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getattrTimeout time.Duration) {
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var err error
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// Set up a temporary directory for mounting.
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t.dir, err = ioutil.TempDir("", "caching_fs_test")
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AssertEq(nil, err)
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// Create the file system.
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t.fs, err = cachingfs.NewCachingFS(lookupEntryTimeout, getattrTimeout)
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AssertEq(nil, err)
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// Mount it.
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t.mfs, err = fuse.Mount(t.dir, t.fs)
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AssertEq(nil, err)
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err = t.mfs.WaitForReady(context.Background())
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AssertEq(nil, err)
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// Set up the mtime.
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t.initialMtime = time.Date(2012, 8, 15, 22, 56, 0, 0, time.Local)
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t.fs.SetMtime(t.initialMtime)
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}
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func (t *CachingFSTest) TearDown() {
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// Was the file system mounted?
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if t.mfs == nil {
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return
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}
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// Unmount the file system. Try again on "resource busy" errors.
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delay := 10 * time.Millisecond
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for {
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err := t.mfs.Unmount()
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if err == nil {
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break
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}
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if strings.Contains(err.Error(), "resource busy") {
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log.Println("Resource busy error while unmounting; trying again")
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time.Sleep(delay)
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delay = time.Duration(1.3 * float64(delay))
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continue
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}
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panic("MountedFileSystem.Unmount: " + err.Error())
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}
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if err := t.mfs.Join(context.Background()); err != nil {
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panic("MountedFileSystem.Join: " + err.Error())
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}
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}
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func getInodeID(fi os.FileInfo) uint64 {
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return fi.Sys().(*syscall.Stat_t).Ino
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}
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////////////////////////////////////////////////////////////////////////
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// Basics
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////////////////////////////////////////////////////////////////////////
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type BasicsTest struct {
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CachingFSTest
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}
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var _ SetUpInterface = &BasicsTest{}
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func init() { RegisterTestSuite(&BasicsTest{}) }
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func (t *BasicsTest) SetUp(ti *TestInfo) {
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const (
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lookupEntryTimeout = 0
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getattrTimeout = 0
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)
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t.CachingFSTest.setUp(lookupEntryTimeout, getattrTimeout)
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}
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func (t *BasicsTest) StatNonexistent() {
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names := []string{
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"blah",
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"bar",
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"dir/blah",
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"dir/dir",
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"dir/foo",
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}
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for _, n := range names {
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_, err := os.Stat(path.Join(t.dir, n))
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AssertNe(nil, err)
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ExpectTrue(os.IsNotExist(err), "n: %s, err: %v", n, err)
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}
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}
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func (t *BasicsTest) StatFoo() {
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fi, err := os.Stat(path.Join(t.dir, "foo"))
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AssertEq(nil, err)
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ExpectEq("foo", fi.Name())
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ExpectEq(cachingfs.FooSize, fi.Size())
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ExpectEq(0777, fi.Mode())
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ExpectThat(fi.ModTime(), timeutil.TimeEq(t.initialMtime))
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ExpectFalse(fi.IsDir())
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ExpectEq(t.fs.FooID(), getInodeID(fi))
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}
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func (t *BasicsTest) StatDir() {
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fi, err := os.Stat(path.Join(t.dir, "dir"))
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AssertEq(nil, err)
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ExpectEq("dir", fi.Name())
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ExpectEq(os.ModeDir|0777, fi.Mode())
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ExpectThat(fi.ModTime(), timeutil.TimeEq(t.initialMtime))
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ExpectTrue(fi.IsDir())
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ExpectEq(t.fs.DirID(), getInodeID(fi))
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}
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func (t *BasicsTest) StatBar() {
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fi, err := os.Stat(path.Join(t.dir, "dir/bar"))
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AssertEq(nil, err)
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ExpectEq("bar", fi.Name())
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ExpectEq(cachingfs.BarSize, fi.Size())
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ExpectEq(0777, fi.Mode())
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ExpectThat(fi.ModTime(), timeutil.TimeEq(t.initialMtime))
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ExpectFalse(fi.IsDir())
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ExpectEq(t.fs.BarID(), getInodeID(fi))
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}
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////////////////////////////////////////////////////////////////////////
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// No caching
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////////////////////////////////////////////////////////////////////////
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type NoCachingTest struct {
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CachingFSTest
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}
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var _ SetUpInterface = &NoCachingTest{}
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func init() { RegisterTestSuite(&NoCachingTest{}) }
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func (t *NoCachingTest) SetUp(ti *TestInfo) {
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const (
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lookupEntryTimeout = 0
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getattrTimeout = 0
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)
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t.CachingFSTest.setUp(lookupEntryTimeout, getattrTimeout)
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}
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func (t *NoCachingTest) StatStat() {
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var err error
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// Stat everything.
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fooBefore, err := os.Stat(path.Join(t.dir, "foo"))
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AssertEq(nil, err)
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dirBefore, err := os.Stat(path.Join(t.dir, "dir"))
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AssertEq(nil, err)
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barBefore, err := os.Stat(path.Join(t.dir, "bar"))
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AssertEq(nil, err)
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// Stat again.
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fooAfter, err := os.Stat(path.Join(t.dir, "foo"))
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AssertEq(nil, err)
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dirAfter, err := os.Stat(path.Join(t.dir, "dir"))
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AssertEq(nil, err)
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barAfter, err := os.Stat(path.Join(t.dir, "bar"))
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AssertEq(nil, err)
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// Make sure everything matches.
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ExpectEq(fooBefore.ModTime(), fooAfter.ModTime())
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ExpectEq(dirBefore.ModTime(), dirAfter.ModTime())
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ExpectEq(barBefore.ModTime(), barAfter.ModTime())
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ExpectEq(getInodeID(fooBefore), getInodeID(fooAfter))
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ExpectEq(getInodeID(dirBefore), getInodeID(dirAfter))
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ExpectEq(getInodeID(barBefore), getInodeID(barAfter))
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}
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func (t *NoCachingTest) StatRenumberStat() {
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AssertTrue(false, "TODO")
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}
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func (t *NoCachingTest) StatMtimeStat() {
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AssertTrue(false, "TODO")
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}
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func (t *NoCachingTest) StatRenumberMtimeStat() {
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AssertTrue(false, "TODO")
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}
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