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mounted.go
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mounted.go
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package fstestutil
import (
"errors"
"io/ioutil"
"log"
"os"
"testing"
"time"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/bazil.org/fuse"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/bazil.org/fuse/fs"
)
// Mount contains information about the mount for the test to use.
type Mount struct {
// Dir is the temporary directory where the filesystem is mounted.
Dir string
Conn *fuse.Conn
// Error will receive the return value of Serve.
Error <-chan error
done <-chan struct{}
closed bool
}
// Close unmounts the filesystem and waits for fs.Serve to return. Any
// returned error will be stored in Err. It is safe to call Close
// multiple times.
func (mnt *Mount) Close() {
if mnt.closed {
return
}
mnt.closed = true
for tries := 0; tries < 1000; tries++ {
err := fuse.Unmount(mnt.Dir)
if err != nil {
// TODO do more than log?
log.Printf("unmount error: %v", err)
time.Sleep(10 * time.Millisecond)
continue
}
break
}
<-mnt.done
mnt.Conn.Close()
os.Remove(mnt.Dir)
}
// Mounted mounts the fuse.Server at a temporary directory.
//
// It also waits until the filesystem is known to be visible (OS X
// workaround).
//
// After successful return, caller must clean up by calling Close.
func Mounted(srv *fs.Server, options ...fuse.MountOption) (*Mount, error) {
dir, err := ioutil.TempDir("", "fusetest")
if err != nil {
return nil, err
}
c, err := fuse.Mount(dir, options...)
if err != nil {
return nil, err
}
done := make(chan struct{})
serveErr := make(chan error, 1)
mnt := &Mount{
Dir: dir,
Conn: c,
Error: serveErr,
done: done,
}
go func() {
defer close(done)
serveErr <- srv.Serve(c)
}()
select {
case <-mnt.Conn.Ready:
if mnt.Conn.MountError != nil {
return nil, err
}
return mnt, err
case err = <-mnt.Error:
// Serve quit early
if err != nil {
return nil, err
}
return nil, errors.New("Serve exited early")
}
}
// MountedT mounts the filesystem at a temporary directory,
// directing it's debug log to the testing logger.
//
// See Mounted for usage.
//
// The debug log is not enabled by default. Use `-fuse.debug` or call
// DebugByDefault to enable.
func MountedT(t testing.TB, filesys fs.FS, options ...fuse.MountOption) (*Mount, error) {
srv := &fs.Server{
FS: filesys,
}
if debug {
srv.Debug = func(msg interface{}) {
t.Logf("FUSE: %s", msg)
}
}
return Mounted(srv, options...)
}