rclone/vfs/cache_test.go
Nick Craig-Wood 7f20e1d7f3 vfs: add read write files and caching #711
This adds new flags to mount, cmount, serve *

    --cache-max-age duration         Max age of objects in the cache. (default 1h0m0s)
    --cache-mode string              Cache mode off|minimal|writes|full (default "off")
    --cache-poll-interval duration   Interval to poll the cache for stale objects. (default 1m0s)
2017-11-20 12:36:50 +00:00

145 lines
3.3 KiB
Go

package vfs
import (
"io/ioutil"
"log"
"os"
"path/filepath"
"testing"
"time"
"github.com/djherbis/times"
"github.com/ncw/rclone/fstest"
"github.com/spf13/pflag"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"golang.org/x/net/context" // switch to "context" when we stop supporting go1.6
)
// Check CacheMode it satisfies the pflag interface
var _ pflag.Value = (*CacheMode)(nil)
func TestCacheModeString(t *testing.T) {
assert.Equal(t, "off", CacheModeOff.String())
assert.Equal(t, "full", CacheModeFull.String())
assert.Equal(t, "CacheMode(17)", CacheMode(17).String())
}
func TestCacheModeSet(t *testing.T) {
var m CacheMode
err := m.Set("full")
assert.NoError(t, err)
assert.Equal(t, CacheModeFull, m)
err = m.Set("potato")
assert.Error(t, err, "Unknown cache mode level")
err = m.Set("")
assert.Error(t, err, "Unknown cache mode level")
}
func TestCacheModeType(t *testing.T) {
var m CacheMode
assert.Equal(t, "string", m.Type())
}
func TestCacheNew(t *testing.T) {
r := fstest.NewRun(t)
defer r.Finalise()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
c, err := newCache(ctx, r.Fremote, &DefaultOpt)
require.NoError(t, err)
assert.Contains(t, c.root, "vfs")
assert.Contains(t, c.f.Root(), filepath.Base(r.Fremote.Root()))
// mkdir
p, err := c.mkdir("potato")
require.NoError(t, err)
assert.Equal(t, "potato", filepath.Base(p))
fi, err := os.Stat(filepath.Dir(p))
require.NoError(t, err)
assert.True(t, fi.IsDir())
// get
item := c.get("potato")
item2 := c.get("potato")
assert.Equal(t, item, item2)
assert.WithinDuration(t, time.Now(), item.atime, time.Second)
// updateTime
//.. before
t1 := time.Now().Add(-60 * time.Minute)
c.updateTime("potato", t1)
item = c.get("potato")
assert.NotEqual(t, t1, item.atime)
assert.Equal(t, 0, item.opens)
//..after
t2 := time.Now().Add(60 * time.Minute)
c.updateTime("potato", t2)
item = c.get("potato")
assert.Equal(t, t2, item.atime)
assert.Equal(t, 0, item.opens)
// open
c.open("potato")
item = c.get("potato")
assert.WithinDuration(t, time.Now(), item.atime, time.Second)
assert.Equal(t, 1, item.opens)
// write the file
err = ioutil.WriteFile(p, []byte("hello"), 0600)
require.NoError(t, err)
// read its atime
fi, err = os.Stat(p)
assert.NoError(t, err)
atime := times.Get(fi).AccessTime()
// updateAtimes
log.Printf("updateAtimes")
item = c.get("potato")
item.atime = time.Now().Add(-24 * time.Hour)
err = c.updateAtimes()
require.NoError(t, err)
item = c.get("potato")
assert.Equal(t, atime, item.atime)
// try purging with file open
c.purgeOld(10 * time.Second)
_, err = os.Stat(p)
assert.NoError(t, err)
// close
c.updateTime("potato", t2)
c.close("potato")
item = c.get("potato")
assert.WithinDuration(t, time.Now(), item.atime, time.Second)
assert.Equal(t, 0, item.opens)
// try purging with file closed
c.purgeOld(10 * time.Second)
// ...nothing should happend
_, err = os.Stat(p)
assert.NoError(t, err)
//.. purge again with -ve age
c.purgeOld(-10 * time.Second)
_, err = os.Stat(p)
assert.True(t, os.IsNotExist(err))
// clean - have tested the internals already
c.clean()
// cleanup
err = c.cleanUp()
require.NoError(t, err)
_, err = os.Stat(c.root)
assert.True(t, os.IsNotExist(err))
}