A Go package for implementing a FUSE file system (fork with 'almost' zero-copy read/write)
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fusego/mount_test.go

95 lines
1.9 KiB

package fuse_test
import (
"context"
"io/ioutil"
"os"
"path"
"strings"
"testing"
"github.com/jacobsa/fuse"
"github.com/jacobsa/fuse/fuseops"
"github.com/jacobsa/fuse/fuseutil"
)
////////////////////////////////////////////////////////////////////////
// minimalFS
////////////////////////////////////////////////////////////////////////
// A minimal fuseutil.FileSystem that can successfully mount but do nothing
// else.
type minimalFS struct {
fuseutil.NotImplementedFileSystem
}
func (fs *minimalFS) StatFS(
ctx context.Context,
op *fuseops.StatFSOp) error {
return nil
}
////////////////////////////////////////////////////////////////////////
// Tests
////////////////////////////////////////////////////////////////////////
func TestSuccessfulMount(t *testing.T) {
ctx := context.Background()
// Set up a temporary directory.
dir, err := ioutil.TempDir("", "mount_test")
if err != nil {
t.Fatalf("ioutil.TempDir: %v", err)
}
defer os.RemoveAll(dir)
// Mount.
fs := &minimalFS{}
mfs, err := fuse.Mount(
dir,
fuseutil.NewFileSystemServer(fs),
&fuse.MountConfig{})
if err != nil {
t.Fatalf("fuse.Mount: %v", err)
}
defer func() {
if err := mfs.Join(ctx); err != nil {
t.Errorf("Joining: %v", err)
}
}()
defer fuse.Unmount(mfs.Dir())
}
func TestNonexistentMountPoint(t *testing.T) {
ctx := context.Background()
// Set up a temporary directory.
dir, err := ioutil.TempDir("", "mount_test")
if err != nil {
t.Fatalf("ioutil.TempDir: %v", err)
}
defer os.RemoveAll(dir)
// Attempt to mount into a sub-directory that doesn't exist.
fs := &minimalFS{}
mfs, err := fuse.Mount(
path.Join(dir, "foo"),
fuseutil.NewFileSystemServer(fs),
&fuse.MountConfig{})
if err == nil {
fuse.Unmount(mfs.Dir())
mfs.Join(ctx)
t.Fatal("fuse.Mount returned nil")
}
const want = "no such file"
if got := err.Error(); !strings.Contains(got, want) {
t.Errorf("Unexpected error: %v", got)
}
}