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110 lines
3.4 KiB
Go
110 lines
3.4 KiB
Go
// Copyright (C) 2016 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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package fs
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import (
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"errors"
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"io/ioutil"
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"os"
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"testing"
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"time"
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)
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func TestMtimeFS(t *testing.T) {
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os.RemoveAll("testdata")
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defer os.RemoveAll("testdata")
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os.Mkdir("testdata", 0755)
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ioutil.WriteFile("testdata/exists0", []byte("hello"), 0644)
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ioutil.WriteFile("testdata/exists1", []byte("hello"), 0644)
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ioutil.WriteFile("testdata/exists2", []byte("hello"), 0644)
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// a random time with nanosecond precision
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testTime := time.Unix(1234567890, 123456789)
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mtimefs := NewMtimeFS(newBasicFilesystem("."), make(mapStore))
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// Do one Chtimes call that will go through to the normal filesystem
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mtimefs.chtimes = os.Chtimes
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if err := mtimefs.Chtimes("testdata/exists0", testTime, testTime); err != nil {
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t.Error("Should not have failed:", err)
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}
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// Do one call that gets an error back from the underlying Chtimes
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mtimefs.chtimes = failChtimes
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if err := mtimefs.Chtimes("testdata/exists1", testTime, testTime); err != nil {
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t.Error("Should not have failed:", err)
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}
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// Do one call that gets struck by an exceptionally evil Chtimes
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mtimefs.chtimes = evilChtimes
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if err := mtimefs.Chtimes("testdata/exists2", testTime, testTime); err != nil {
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t.Error("Should not have failed:", err)
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}
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// All of the calls were successful, so an Lstat on them should return
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// the test timestamp.
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for _, file := range []string{"testdata/exists0", "testdata/exists1", "testdata/exists2"} {
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if info, err := mtimefs.Lstat(file); err != nil {
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t.Error("Lstat shouldn't fail:", err)
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} else if !info.ModTime().Equal(testTime) {
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t.Errorf("Time mismatch; %v != expected %v", info.ModTime(), testTime)
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}
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}
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// The two last files should certainly not have the correct timestamp
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// when looking directly on disk though.
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for _, file := range []string{"testdata/exists1", "testdata/exists2"} {
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if info, err := os.Lstat(file); err != nil {
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t.Error("Lstat shouldn't fail:", err)
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} else if info.ModTime().Equal(testTime) {
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t.Errorf("Unexpected time match; %v == %v", info.ModTime(), testTime)
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}
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}
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// Changing the timestamp on disk should be reflected in a new Lstat
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// call. Choose a time that is likely to be able to be on all reasonable
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// filesystems.
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testTime = time.Now().Add(5 * time.Hour).Truncate(time.Minute)
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os.Chtimes("testdata/exists0", testTime, testTime)
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if info, err := mtimefs.Lstat("testdata/exists0"); err != nil {
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t.Error("Lstat shouldn't fail:", err)
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} else if !info.ModTime().Equal(testTime) {
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t.Errorf("Time mismatch; %v != expected %v", info.ModTime(), testTime)
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}
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}
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// The mapStore is a simple database
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type mapStore map[string][]byte
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func (s mapStore) PutBytes(key string, data []byte) {
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s[key] = data
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}
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func (s mapStore) Bytes(key string) (data []byte, ok bool) {
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data, ok = s[key]
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return
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}
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func (s mapStore) Delete(key string) {
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delete(s, key)
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}
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// failChtimes does nothing, and fails
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func failChtimes(name string, mtime, atime time.Time) error {
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return errors.New("no")
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}
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// evilChtimes will set an mtime that's 300 days in the future of what was
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// asked for, and truncate the time to the closest hour.
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func evilChtimes(name string, mtime, atime time.Time) error {
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return os.Chtimes(name, mtime.Add(300*time.Hour).Truncate(time.Hour), atime.Add(300*time.Hour).Truncate(time.Hour))
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}
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