331 lines
8.6 KiB
Go
331 lines
8.6 KiB
Go
package vfs
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"sort"
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"strings"
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"testing"
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"time"
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"github.com/djherbis/times"
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"github.com/ncw/rclone/fstest"
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"github.com/spf13/pflag"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"golang.org/x/net/context" // switch to "context" when we stop supporting go1.6
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)
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// Check CacheMode it satisfies the pflag interface
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var _ pflag.Value = (*CacheMode)(nil)
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func TestCacheModeString(t *testing.T) {
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assert.Equal(t, "off", CacheModeOff.String())
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assert.Equal(t, "full", CacheModeFull.String())
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assert.Equal(t, "CacheMode(17)", CacheMode(17).String())
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}
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func TestCacheModeSet(t *testing.T) {
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var m CacheMode
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err := m.Set("full")
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assert.NoError(t, err)
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assert.Equal(t, CacheModeFull, m)
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err = m.Set("potato")
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assert.Error(t, err, "Unknown cache mode level")
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err = m.Set("")
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assert.Error(t, err, "Unknown cache mode level")
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}
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func TestCacheModeType(t *testing.T) {
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var m CacheMode
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assert.Equal(t, "string", m.Type())
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}
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// convert c.item to a string
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func itemAsString(c *cache) string {
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c.itemMu.Lock()
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defer c.itemMu.Unlock()
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var out []string
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for name, item := range c.item {
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out = append(out, fmt.Sprintf("name=%q isFile=%v opens=%d", name, item.isFile, item.opens))
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}
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sort.Strings(out)
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return strings.Join(out, "\n")
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}
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func TestCacheNew(t *testing.T) {
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r := fstest.NewRun(t)
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defer r.Finalise()
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ctx, cancel := context.WithCancel(context.Background())
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c, err := newCache(ctx, r.Fremote, &DefaultOpt)
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cancel() // kill the background cache cleaning as it interferes with the tests
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require.NoError(t, err)
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assert.Contains(t, c.root, "vfs")
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assert.Contains(t, c.f.Root(), filepath.Base(r.Fremote.Root()))
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assert.Equal(t, "", itemAsString(c))
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// mkdir
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p, err := c.mkdir("potato")
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require.NoError(t, err)
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assert.Equal(t, "potato", filepath.Base(p))
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assert.Equal(t, `name="" isFile=false opens=0`, itemAsString(c))
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fi, err := os.Stat(filepath.Dir(p))
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require.NoError(t, err)
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assert.True(t, fi.IsDir())
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// get
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item := c.get("potato")
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item2 := c.get("potato")
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assert.Equal(t, item, item2)
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assert.WithinDuration(t, time.Now(), item.atime, time.Second)
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// updateTime
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//.. before
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t1 := time.Now().Add(-60 * time.Minute)
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c.updateTime("potato", t1)
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item = c.get("potato")
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assert.NotEqual(t, t1, item.atime)
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assert.Equal(t, 0, item.opens)
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//..after
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t2 := time.Now().Add(60 * time.Minute)
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c.updateTime("potato", t2)
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item = c.get("potato")
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assert.Equal(t, t2, item.atime)
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assert.Equal(t, 0, item.opens)
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// open
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assert.Equal(t, `name="" isFile=false opens=0
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name="potato" isFile=true opens=0`, itemAsString(c))
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c.open("potato")
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assert.Equal(t, `name="" isFile=false opens=1
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name="potato" isFile=true opens=1`, itemAsString(c))
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item = c.get("potato")
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assert.WithinDuration(t, time.Now(), item.atime, time.Second)
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assert.Equal(t, 1, item.opens)
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// write the file
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err = ioutil.WriteFile(p, []byte("hello"), 0600)
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require.NoError(t, err)
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// read its atime
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fi, err = os.Stat(p)
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assert.NoError(t, err)
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atime := times.Get(fi).AccessTime()
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// updateAtimes
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item = c.get("potato")
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item.atime = time.Now().Add(-24 * time.Hour)
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err = c.updateAtimes()
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require.NoError(t, err)
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assert.Equal(t, `name="" isFile=false opens=1
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name="potato" isFile=true opens=1`, itemAsString(c))
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item = c.get("potato")
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assert.Equal(t, atime, item.atime)
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// updateAtimes - not in the cache
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oldItem := item
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c.itemMu.Lock()
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delete(c.item, "potato") // remove from cache
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c.itemMu.Unlock()
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err = c.updateAtimes()
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require.NoError(t, err)
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assert.Equal(t, `name="" isFile=false opens=1
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name="potato" isFile=true opens=0`, itemAsString(c))
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item = c.get("potato")
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assert.Equal(t, atime, item.atime)
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c.itemMu.Lock()
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c.item["potato"] = oldItem // restore to cache
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c.itemMu.Unlock()
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// try purging with file open
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c.purgeOld(10 * time.Second)
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_, err = os.Stat(p)
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assert.NoError(t, err)
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// close
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assert.Equal(t, `name="" isFile=false opens=1
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name="potato" isFile=true opens=1`, itemAsString(c))
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c.updateTime("potato", t2)
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assert.Equal(t, `name="" isFile=false opens=1
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name="potato" isFile=true opens=1`, itemAsString(c))
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c.close("potato")
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assert.Equal(t, `name="" isFile=false opens=0
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name="potato" isFile=true opens=0`, itemAsString(c))
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item = c.get("potato")
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assert.WithinDuration(t, time.Now(), item.atime, time.Second)
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assert.Equal(t, 0, item.opens)
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// try purging with file closed
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c.purgeOld(10 * time.Second)
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// ...nothing should happend
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_, err = os.Stat(p)
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assert.NoError(t, err)
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//.. purge again with -ve age
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c.purgeOld(-10 * time.Second)
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_, err = os.Stat(p)
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assert.True(t, os.IsNotExist(err))
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// clean - have tested the internals already
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c.clean()
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// cleanup
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err = c.cleanUp()
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require.NoError(t, err)
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_, err = os.Stat(c.root)
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assert.True(t, os.IsNotExist(err))
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}
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func TestCacheOpens(t *testing.T) {
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r := fstest.NewRun(t)
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defer r.Finalise()
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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c, err := newCache(ctx, r.Fremote, &DefaultOpt)
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require.NoError(t, err)
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assert.Equal(t, "", itemAsString(c))
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c.open("potato")
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assert.Equal(t, `name="" isFile=false opens=1
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name="potato" isFile=true opens=1`, itemAsString(c))
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c.open("potato")
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assert.Equal(t, `name="" isFile=false opens=2
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name="potato" isFile=true opens=2`, itemAsString(c))
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c.close("potato")
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assert.Equal(t, `name="" isFile=false opens=1
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name="potato" isFile=true opens=1`, itemAsString(c))
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c.close("potato")
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assert.Equal(t, `name="" isFile=false opens=0
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name="potato" isFile=true opens=0`, itemAsString(c))
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c.open("potato")
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c.open("a/b/c/d/one")
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c.open("a/b/c/d/e/two")
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c.open("a/b/c/d/e/f/three")
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assert.Equal(t, `name="" isFile=false opens=4
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name="a" isFile=false opens=3
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name="a/b" isFile=false opens=3
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name="a/b/c" isFile=false opens=3
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name="a/b/c/d" isFile=false opens=3
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name="a/b/c/d/e" isFile=false opens=2
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name="a/b/c/d/e/f" isFile=false opens=1
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name="a/b/c/d/e/f/three" isFile=true opens=1
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name="a/b/c/d/e/two" isFile=true opens=1
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name="a/b/c/d/one" isFile=true opens=1
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name="potato" isFile=true opens=1`, itemAsString(c))
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c.close("potato")
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c.close("a/b/c/d/one")
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c.close("a/b/c/d/e/two")
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c.close("a/b/c/d/e/f/three")
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assert.Equal(t, `name="" isFile=false opens=0
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name="a" isFile=false opens=0
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name="a/b" isFile=false opens=0
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name="a/b/c" isFile=false opens=0
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name="a/b/c/d" isFile=false opens=0
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name="a/b/c/d/e" isFile=false opens=0
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name="a/b/c/d/e/f" isFile=false opens=0
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name="a/b/c/d/e/f/three" isFile=true opens=0
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name="a/b/c/d/e/two" isFile=true opens=0
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name="a/b/c/d/one" isFile=true opens=0
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name="potato" isFile=true opens=0`, itemAsString(c))
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}
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func TestCacheCacheDir(t *testing.T) {
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r := fstest.NewRun(t)
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defer r.Finalise()
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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c, err := newCache(ctx, r.Fremote, &DefaultOpt)
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require.NoError(t, err)
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assert.Equal(t, "", itemAsString(c))
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c.cacheDir("dir")
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assert.Equal(t, `name="" isFile=false opens=0
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name="dir" isFile=false opens=0`, itemAsString(c))
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c.cacheDir("dir/sub")
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assert.Equal(t, `name="" isFile=false opens=0
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name="dir" isFile=false opens=0
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name="dir/sub" isFile=false opens=0`, itemAsString(c))
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c.cacheDir("dir/sub2/subsub2")
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assert.Equal(t, `name="" isFile=false opens=0
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name="dir" isFile=false opens=0
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name="dir/sub" isFile=false opens=0
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name="dir/sub2" isFile=false opens=0
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name="dir/sub2/subsub2" isFile=false opens=0`, itemAsString(c))
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}
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func TestCachePurgeOld(t *testing.T) {
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r := fstest.NewRun(t)
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defer r.Finalise()
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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c, err := newCache(ctx, r.Fremote, &DefaultOpt)
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require.NoError(t, err)
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// Test funcs
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var removed []string
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removedDir := true
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removeFile := func(name string) {
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removed = append(removed, name)
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}
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removeDir := func(name string) bool {
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if removedDir {
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removed = append(removed, name+"/")
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}
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return removedDir
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}
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removed = nil
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c._purgeOld(-10*time.Second, removeFile, removeDir)
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assert.Equal(t, []string(nil), removed)
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c.open("sub/dir/potato")
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c.close("sub/dir/potato")
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assert.Equal(t, `name="" isFile=false opens=0
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name="sub" isFile=false opens=0
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name="sub/dir" isFile=false opens=0
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name="sub/dir/potato" isFile=true opens=0`, itemAsString(c))
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removed = nil
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removedDir = false
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c._purgeOld(10*time.Second, removeFile, removeDir)
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assert.Equal(t, []string(nil), removed)
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assert.Equal(t, `name="" isFile=false opens=0
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name="sub" isFile=false opens=0
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name="sub/dir" isFile=false opens=0
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name="sub/dir/potato" isFile=true opens=0`, itemAsString(c))
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removed = nil
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removedDir = true
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c._purgeOld(-10*time.Second, removeFile, removeDir)
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assert.Equal(t, []string{
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"sub/dir/potato",
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"sub/dir/",
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"sub/",
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"/",
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}, removed)
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assert.Equal(t, ``, itemAsString(c))
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}
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