360 lines
7.9 KiB
Go
360 lines
7.9 KiB
Go
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package zfs_test
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import (
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"fmt"
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"io/ioutil"
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"math"
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"os"
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"path/filepath"
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"reflect"
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"runtime"
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"testing"
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"time"
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"github.com/mistifyio/go-zfs"
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)
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func sleep(delay int) {
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time.Sleep(time.Duration(delay) * time.Second)
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}
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func pow2(x int) int64 {
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return int64(math.Pow(2, float64(x)))
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}
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//https://github.com/benbjohnson/testing
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// assert fails the test if the condition is false.
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func assert(tb testing.TB, condition bool, msg string, v ...interface{}) {
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if !condition {
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_, file, line, _ := runtime.Caller(1)
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fmt.Printf("\033[31m%s:%d: "+msg+"\033[39m\n\n", append([]interface{}{filepath.Base(file), line}, v...)...)
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tb.FailNow()
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}
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}
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// ok fails the test if an err is not nil.
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func ok(tb testing.TB, err error) {
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if err != nil {
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_, file, line, _ := runtime.Caller(1)
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fmt.Printf("\033[31m%s:%d: unexpected error: %s\033[39m\n\n", filepath.Base(file), line, err.Error())
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tb.FailNow()
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}
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}
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// equals fails the test if exp is not equal to act.
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func equals(tb testing.TB, exp, act interface{}) {
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if !reflect.DeepEqual(exp, act) {
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_, file, line, _ := runtime.Caller(1)
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fmt.Printf("\033[31m%s:%d:\n\n\texp: %#v\n\n\tgot: %#v\033[39m\n\n", filepath.Base(file), line, exp, act)
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tb.FailNow()
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}
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}
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func zpoolTest(t *testing.T, fn func()) {
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tempfiles := make([]string, 3)
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for i := range tempfiles {
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f, _ := ioutil.TempFile("/tmp/", "zfs-")
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defer f.Close()
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err := f.Truncate(pow2(30))
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ok(t, err)
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tempfiles[i] = f.Name()
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defer os.Remove(f.Name())
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}
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pool, err := zfs.CreateZpool("test", nil, tempfiles...)
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ok(t, err)
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defer pool.Destroy()
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ok(t, err)
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fn()
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}
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func TestDatasets(t *testing.T) {
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zpoolTest(t, func() {
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_, err := zfs.Datasets("")
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ok(t, err)
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ds, err := zfs.GetDataset("test")
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ok(t, err)
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equals(t, zfs.DatasetFilesystem, ds.Type)
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equals(t, "", ds.Origin)
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assert(t, ds.Logicalused > 0, "Logicalused is not greater than 0")
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})
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}
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func TestSnapshots(t *testing.T) {
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zpoolTest(t, func() {
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snapshots, err := zfs.Snapshots("")
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ok(t, err)
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for _, snapshot := range snapshots {
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equals(t, zfs.DatasetSnapshot, snapshot.Type)
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}
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})
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}
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func TestFilesystems(t *testing.T) {
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zpoolTest(t, func() {
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f, err := zfs.CreateFilesystem("test/filesystem-test", nil)
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ok(t, err)
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filesystems, err := zfs.Filesystems("")
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ok(t, err)
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for _, filesystem := range filesystems {
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equals(t, zfs.DatasetFilesystem, filesystem.Type)
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}
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ok(t, f.Destroy(zfs.DestroyDefault))
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})
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}
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func TestCreateFilesystemWithProperties(t *testing.T) {
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zpoolTest(t, func() {
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props := map[string]string{
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"compression": "lz4",
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}
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f, err := zfs.CreateFilesystem("test/filesystem-test", props)
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ok(t, err)
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equals(t, "lz4", f.Compression)
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filesystems, err := zfs.Filesystems("")
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ok(t, err)
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for _, filesystem := range filesystems {
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equals(t, zfs.DatasetFilesystem, filesystem.Type)
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}
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ok(t, f.Destroy(zfs.DestroyDefault))
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})
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}
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func TestVolumes(t *testing.T) {
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zpoolTest(t, func() {
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v, err := zfs.CreateVolume("test/volume-test", uint64(pow2(23)), nil)
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ok(t, err)
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// volumes are sometimes "busy" if you try to manipulate them right away
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sleep(1)
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equals(t, zfs.DatasetVolume, v.Type)
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volumes, err := zfs.Volumes("")
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ok(t, err)
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for _, volume := range volumes {
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equals(t, zfs.DatasetVolume, volume.Type)
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}
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ok(t, v.Destroy(zfs.DestroyDefault))
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})
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}
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func TestSnapshot(t *testing.T) {
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zpoolTest(t, func() {
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f, err := zfs.CreateFilesystem("test/snapshot-test", nil)
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ok(t, err)
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filesystems, err := zfs.Filesystems("")
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ok(t, err)
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for _, filesystem := range filesystems {
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equals(t, zfs.DatasetFilesystem, filesystem.Type)
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}
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s, err := f.Snapshot("test", false)
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ok(t, err)
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equals(t, zfs.DatasetSnapshot, s.Type)
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equals(t, "test/snapshot-test@test", s.Name)
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ok(t, s.Destroy(zfs.DestroyDefault))
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ok(t, f.Destroy(zfs.DestroyDefault))
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})
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}
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func TestClone(t *testing.T) {
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zpoolTest(t, func() {
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f, err := zfs.CreateFilesystem("test/snapshot-test", nil)
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ok(t, err)
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filesystems, err := zfs.Filesystems("")
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ok(t, err)
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for _, filesystem := range filesystems {
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equals(t, zfs.DatasetFilesystem, filesystem.Type)
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}
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s, err := f.Snapshot("test", false)
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ok(t, err)
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equals(t, zfs.DatasetSnapshot, s.Type)
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equals(t, "test/snapshot-test@test", s.Name)
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c, err := s.Clone("test/clone-test", nil)
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ok(t, err)
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equals(t, zfs.DatasetFilesystem, c.Type)
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ok(t, c.Destroy(zfs.DestroyDefault))
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ok(t, s.Destroy(zfs.DestroyDefault))
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ok(t, f.Destroy(zfs.DestroyDefault))
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})
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}
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func TestSendSnapshot(t *testing.T) {
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zpoolTest(t, func() {
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f, err := zfs.CreateFilesystem("test/snapshot-test", nil)
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ok(t, err)
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filesystems, err := zfs.Filesystems("")
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ok(t, err)
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for _, filesystem := range filesystems {
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equals(t, zfs.DatasetFilesystem, filesystem.Type)
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}
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s, err := f.Snapshot("test", false)
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ok(t, err)
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file, _ := ioutil.TempFile("/tmp/", "zfs-")
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defer file.Close()
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err = file.Truncate(pow2(30))
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ok(t, err)
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defer os.Remove(file.Name())
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err = s.SendSnapshot(file)
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ok(t, err)
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ok(t, s.Destroy(zfs.DestroyDefault))
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ok(t, f.Destroy(zfs.DestroyDefault))
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})
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}
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func TestChildren(t *testing.T) {
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zpoolTest(t, func() {
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f, err := zfs.CreateFilesystem("test/snapshot-test", nil)
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ok(t, err)
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s, err := f.Snapshot("test", false)
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ok(t, err)
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equals(t, zfs.DatasetSnapshot, s.Type)
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equals(t, "test/snapshot-test@test", s.Name)
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children, err := f.Children(0)
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ok(t, err)
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equals(t, 1, len(children))
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equals(t, "test/snapshot-test@test", children[0].Name)
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ok(t, s.Destroy(zfs.DestroyDefault))
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ok(t, f.Destroy(zfs.DestroyDefault))
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})
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}
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func TestListZpool(t *testing.T) {
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zpoolTest(t, func() {
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pools, err := zfs.ListZpools()
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ok(t, err)
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equals(t, "test", pools[0].Name)
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})
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}
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func TestRollback(t *testing.T) {
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zpoolTest(t, func() {
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f, err := zfs.CreateFilesystem("test/snapshot-test", nil)
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ok(t, err)
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filesystems, err := zfs.Filesystems("")
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ok(t, err)
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for _, filesystem := range filesystems {
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equals(t, zfs.DatasetFilesystem, filesystem.Type)
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}
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s1, err := f.Snapshot("test", false)
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ok(t, err)
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_, err = f.Snapshot("test2", false)
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ok(t, err)
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s3, err := f.Snapshot("test3", false)
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ok(t, err)
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err = s3.Rollback(false)
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ok(t, err)
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err = s1.Rollback(false)
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assert(t, err != nil, "should error when rolling back beyond most recent without destroyMoreRecent = true")
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err = s1.Rollback(true)
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ok(t, err)
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ok(t, s1.Destroy(zfs.DestroyDefault))
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ok(t, f.Destroy(zfs.DestroyDefault))
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})
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}
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func TestDiff(t *testing.T) {
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zpoolTest(t, func() {
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fs, err := zfs.CreateFilesystem("test/origin", nil)
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ok(t, err)
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linkedFile, err := os.Create(filepath.Join(fs.Mountpoint, "linked"))
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ok(t, err)
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movedFile, err := os.Create(filepath.Join(fs.Mountpoint, "file"))
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ok(t, err)
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snapshot, err := fs.Snapshot("snapshot", false)
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ok(t, err)
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unicodeFile, err := os.Create(filepath.Join(fs.Mountpoint, "i ❤ unicode"))
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ok(t, err)
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err = os.Rename(movedFile.Name(), movedFile.Name()+"-new")
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ok(t, err)
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err = os.Link(linkedFile.Name(), linkedFile.Name()+"_hard")
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ok(t, err)
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inodeChanges, err := fs.Diff(snapshot.Name)
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ok(t, err)
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equals(t, 4, len(inodeChanges))
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equals(t, "/test/origin/", inodeChanges[0].Path)
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equals(t, zfs.Directory, inodeChanges[0].Type)
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equals(t, zfs.Modified, inodeChanges[0].Change)
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equals(t, "/test/origin/linked", inodeChanges[1].Path)
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equals(t, zfs.File, inodeChanges[1].Type)
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equals(t, zfs.Modified, inodeChanges[1].Change)
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equals(t, 1, inodeChanges[1].ReferenceCountChange)
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equals(t, "/test/origin/file", inodeChanges[2].Path)
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equals(t, "/test/origin/file-new", inodeChanges[2].NewPath)
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equals(t, zfs.File, inodeChanges[2].Type)
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equals(t, zfs.Renamed, inodeChanges[2].Change)
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equals(t, "/test/origin/i ❤ unicode", inodeChanges[3].Path)
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equals(t, zfs.File, inodeChanges[3].Type)
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equals(t, zfs.Created, inodeChanges[3].Change)
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ok(t, movedFile.Close())
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ok(t, unicodeFile.Close())
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ok(t, linkedFile.Close())
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ok(t, snapshot.Destroy(zfs.DestroyForceUmount))
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ok(t, fs.Destroy(zfs.DestroyForceUmount))
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})
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}
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