forked from mistifyio/go-zfs
/
zfs_test.go
366 lines (279 loc) · 8.09 KB
/
zfs_test.go
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package zfs_test
import (
"fmt"
"io/ioutil"
"math"
"os"
"path/filepath"
"reflect"
"runtime"
"testing"
"time"
zfs "github.com/mistifyio/go-zfs"
)
func sleep(delay int) {
time.Sleep(time.Duration(delay) * time.Second)
}
func pow2(x int) int64 {
return int64(math.Pow(2, float64(x)))
}
//https://github.com/benbjohnson/testing
// assert fails the test if the condition is false.
func assert(tb testing.TB, condition bool, msg string, v ...interface{}) {
if !condition {
_, file, line, _ := runtime.Caller(1)
fmt.Printf("\033[31m%s:%d: "+msg+"\033[39m\n\n", append([]interface{}{filepath.Base(file), line}, v...)...)
tb.FailNow()
}
}
// ok fails the test if an err is not nil.
func ok(tb testing.TB, err error) {
if err != nil {
_, file, line, _ := runtime.Caller(1)
fmt.Printf("\033[31m%s:%d: unexpected error: %s\033[39m\n\n", filepath.Base(file), line, err.Error())
tb.FailNow()
}
}
// equals fails the test if exp is not equal to act.
func equals(tb testing.TB, exp, act interface{}) {
if !reflect.DeepEqual(exp, act) {
_, file, line, _ := runtime.Caller(1)
fmt.Printf("\033[31m%s:%d:\n\n\texp: %#v\n\n\tgot: %#v\033[39m\n\n", filepath.Base(file), line, exp, act)
tb.FailNow()
}
}
func zpoolTest(t *testing.T, fn func()) {
tempfiles := make([]string, 3)
for i := range tempfiles {
f, _ := ioutil.TempFile("/tmp/", "zfs-")
defer f.Close()
err := f.Truncate(pow2(30))
ok(t, err)
tempfiles[i] = f.Name()
defer os.Remove(f.Name())
}
pool, err := zfs.CreateZpool("test", nil, tempfiles...)
ok(t, err)
defer pool.Destroy()
ok(t, err)
fn()
}
func TestDatasets(t *testing.T) {
zpoolTest(t, func() {
_, err := zfs.Datasets("")
ok(t, err)
ds, err := zfs.GetDataset("test")
ok(t, err)
equals(t, zfs.DatasetFilesystem, ds.Type)
equals(t, "", ds.Origin)
if runtime.GOOS != "solaris" {
assert(t, ds.Logicalused != 0, "Logicalused is not greater than 0")
}
})
}
func TestSnapshots(t *testing.T) {
zpoolTest(t, func() {
snapshots, err := zfs.Snapshots("")
ok(t, err)
for _, snapshot := range snapshots {
equals(t, zfs.DatasetSnapshot, snapshot.Type)
}
})
}
func TestFilesystems(t *testing.T) {
zpoolTest(t, func() {
f, err := zfs.CreateFilesystem("test/filesystem-test", nil)
ok(t, err)
filesystems, err := zfs.Filesystems("")
ok(t, err)
for _, filesystem := range filesystems {
equals(t, zfs.DatasetFilesystem, filesystem.Type)
}
ok(t, f.Destroy(zfs.DestroyDefault))
})
}
func TestCreateFilesystemWithProperties(t *testing.T) {
zpoolTest(t, func() {
props := map[string]string{
"compression": "lz4",
}
f, err := zfs.CreateFilesystem("test/filesystem-test", props)
ok(t, err)
equals(t, "lz4", f.Compression)
filesystems, err := zfs.Filesystems("")
ok(t, err)
for _, filesystem := range filesystems {
equals(t, zfs.DatasetFilesystem, filesystem.Type)
}
ok(t, f.Destroy(zfs.DestroyDefault))
})
}
func TestVolumes(t *testing.T) {
zpoolTest(t, func() {
v, err := zfs.CreateVolume("test/volume-test", uint64(pow2(23)), nil)
ok(t, err)
// volumes are sometimes "busy" if you try to manipulate them right away
sleep(1)
equals(t, zfs.DatasetVolume, v.Type)
volumes, err := zfs.Volumes("")
ok(t, err)
for _, volume := range volumes {
equals(t, zfs.DatasetVolume, volume.Type)
}
ok(t, v.Destroy(zfs.DestroyDefault))
})
}
func TestSnapshot(t *testing.T) {
zpoolTest(t, func() {
f, err := zfs.CreateFilesystem("test/snapshot-test", nil)
ok(t, err)
filesystems, err := zfs.Filesystems("")
ok(t, err)
for _, filesystem := range filesystems {
equals(t, zfs.DatasetFilesystem, filesystem.Type)
}
s, err := f.Snapshot("test", false)
ok(t, err)
equals(t, zfs.DatasetSnapshot, s.Type)
equals(t, "test/snapshot-test@test", s.Name)
ok(t, s.Destroy(zfs.DestroyDefault))
ok(t, f.Destroy(zfs.DestroyDefault))
})
}
func TestClone(t *testing.T) {
zpoolTest(t, func() {
f, err := zfs.CreateFilesystem("test/snapshot-test", nil)
ok(t, err)
filesystems, err := zfs.Filesystems("")
ok(t, err)
for _, filesystem := range filesystems {
equals(t, zfs.DatasetFilesystem, filesystem.Type)
}
s, err := f.Snapshot("test", false)
ok(t, err)
equals(t, zfs.DatasetSnapshot, s.Type)
equals(t, "test/snapshot-test@test", s.Name)
c, err := s.Clone("test/clone-test", nil)
ok(t, err)
equals(t, zfs.DatasetFilesystem, c.Type)
ok(t, c.Destroy(zfs.DestroyDefault))
ok(t, s.Destroy(zfs.DestroyDefault))
ok(t, f.Destroy(zfs.DestroyDefault))
})
}
func TestSendSnapshot(t *testing.T) {
zpoolTest(t, func() {
f, err := zfs.CreateFilesystem("test/snapshot-test", nil)
ok(t, err)
filesystems, err := zfs.Filesystems("")
ok(t, err)
for _, filesystem := range filesystems {
equals(t, zfs.DatasetFilesystem, filesystem.Type)
}
s, err := f.Snapshot("test", false)
ok(t, err)
file, _ := ioutil.TempFile("/tmp/", "zfs-")
defer file.Close()
err = file.Truncate(pow2(30))
ok(t, err)
defer os.Remove(file.Name())
err = s.SendSnapshot(file)
ok(t, err)
ok(t, s.Destroy(zfs.DestroyDefault))
ok(t, f.Destroy(zfs.DestroyDefault))
})
}
func TestChildren(t *testing.T) {
zpoolTest(t, func() {
f, err := zfs.CreateFilesystem("test/snapshot-test", nil)
ok(t, err)
s, err := f.Snapshot("test", false)
ok(t, err)
equals(t, zfs.DatasetSnapshot, s.Type)
equals(t, "test/snapshot-test@test", s.Name)
children, err := f.Children(0)
ok(t, err)
equals(t, 1, len(children))
equals(t, "test/snapshot-test@test", children[0].Name)
ok(t, s.Destroy(zfs.DestroyDefault))
ok(t, f.Destroy(zfs.DestroyDefault))
})
}
func TestListZpool(t *testing.T) {
zpoolTest(t, func() {
pools, err := zfs.ListZpools()
ok(t, err)
for _, pool := range pools {
if pool.Name == "test" {
equals(t, "test", pool.Name)
return
}
}
t.Fatal("Failed to find test pool")
})
}
func TestRollback(t *testing.T) {
zpoolTest(t, func() {
f, err := zfs.CreateFilesystem("test/snapshot-test", nil)
ok(t, err)
filesystems, err := zfs.Filesystems("")
ok(t, err)
for _, filesystem := range filesystems {
equals(t, zfs.DatasetFilesystem, filesystem.Type)
}
s1, err := f.Snapshot("test", false)
ok(t, err)
_, err = f.Snapshot("test2", false)
ok(t, err)
s3, err := f.Snapshot("test3", false)
ok(t, err)
err = s3.Rollback(false)
ok(t, err)
err = s1.Rollback(false)
assert(t, err != nil, "should error when rolling back beyond most recent without destroyMoreRecent = true")
err = s1.Rollback(true)
ok(t, err)
ok(t, s1.Destroy(zfs.DestroyDefault))
ok(t, f.Destroy(zfs.DestroyDefault))
})
}
func TestDiff(t *testing.T) {
zpoolTest(t, func() {
fs, err := zfs.CreateFilesystem("test/origin", nil)
ok(t, err)
linkedFile, err := os.Create(filepath.Join(fs.Mountpoint, "linked"))
ok(t, err)
movedFile, err := os.Create(filepath.Join(fs.Mountpoint, "file"))
ok(t, err)
snapshot, err := fs.Snapshot("snapshot", false)
ok(t, err)
unicodeFile, err := os.Create(filepath.Join(fs.Mountpoint, "i ❤ unicode"))
ok(t, err)
err = os.Rename(movedFile.Name(), movedFile.Name()+"-new")
ok(t, err)
err = os.Link(linkedFile.Name(), linkedFile.Name()+"_hard")
ok(t, err)
inodeChanges, err := fs.Diff(snapshot.Name)
ok(t, err)
equals(t, 4, len(inodeChanges))
equals(t, "/test/origin/", inodeChanges[0].Path)
equals(t, zfs.Directory, inodeChanges[0].Type)
equals(t, zfs.Modified, inodeChanges[0].Change)
equals(t, "/test/origin/linked", inodeChanges[1].Path)
equals(t, zfs.File, inodeChanges[1].Type)
equals(t, zfs.Modified, inodeChanges[1].Change)
equals(t, 1, inodeChanges[1].ReferenceCountChange)
equals(t, "/test/origin/file", inodeChanges[2].Path)
equals(t, "/test/origin/file-new", inodeChanges[2].NewPath)
equals(t, zfs.File, inodeChanges[2].Type)
equals(t, zfs.Renamed, inodeChanges[2].Change)
equals(t, "/test/origin/i ❤ unicode", inodeChanges[3].Path)
equals(t, zfs.File, inodeChanges[3].Type)
equals(t, zfs.Created, inodeChanges[3].Change)
ok(t, movedFile.Close())
ok(t, unicodeFile.Close())
ok(t, linkedFile.Close())
ok(t, snapshot.Destroy(zfs.DestroyForceUmount))
ok(t, fs.Destroy(zfs.DestroyForceUmount))
})
}