Merge pull request #3668 from epowell/master

Add new interface method to the 'none' communicator

communicator/none/communicator.go

@@ -38,3 +38,7 @@ func (c *comm) UploadDir(dst string, src string, excl []string) error {
 func (c *comm) Download(path string, output io.Writer) error {
 	return errors.New("Download is not implemented when communicator = 'none'")
 }
+
+func (c *comm) DownloadDir(dst string, src string, excl []string) error {
+	return errors.New("DownloadDir is not implemented when communicator = 'none'")
+}

communicator/none/communicator_test.go

@@ -0,0 +1,16 @@
+package none
+
+import (
+	"testing"
+
+	"github.com/mitchellh/packer/packer"
+)
+
+func TestCommIsCommunicator(t *testing.T) {
+	var raw interface{}
+	raw = &comm{}
+	if _, ok := raw.(packer.Communicator); !ok {
+		t.Fatalf("comm must be a communicator")
+	}
+}
+