fix macos build when fuse is enabled

Instead of trying to export the `errNeedFuseVersion` type, just use string
matching. It's good enough for testing and the alternative was annoying.

License: MIT
Signed-off-by: Steven Allen <steven@stebalien.com>

fuse/node/mount_nofuse.go

@@ -8,8 +8,6 @@ import (
 	core "github.com/ipfs/go-ipfs/core"
 )
 
-type errNeedFuseVersion error // used in tests, needed in OSX
-
 func Mount(node *core.IpfsNode, fsdir, nsdir string) error {
 	return errors.New("not compiled in")
 }

fuse/node/mount_test.go

@@ -5,6 +5,7 @@ package node
 import (
 	"io/ioutil"
 	"os"
+	"strings"
 	"testing"
 	"time"
 
@@ -63,7 +64,7 @@ func TestExternalUnmount(t *testing.T) {
 	mkdir(t, ipnsDir)
 
 	err = Mount(node, ipfsDir, ipnsDir)
-	if _, ok := err.(errNeedFuseVersion); ok || err == fuse.ErrOSXFUSENotFound {
+	if strings.Contains(err.Error(), "unable to check fuse version") || err == fuse.ErrOSXFUSENotFound {
 		t.Skip(err)
 	}
 	if err != nil {

fuse/node/mount_unix.go

@@ -30,8 +30,6 @@ var platformFuseChecks = func(*core.IpfsNode) error {
 	return nil
 }
 
-type errNeedFuseVersion error // used in tests, needed in OSX
-
 func Mount(node *core.IpfsNode, fsdir, nsdir string) error {
 	// check if we already have live mounts.
 	// if the user said "Mount", then there must be something wrong.