Rpcserver: Add GetAllPermissions function for retrieving permissions for external macaroon baking

rpcserver_test.go

@@ -0,0 +1,14 @@
+package lnd
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGetAllPermissions(t *testing.T) {
+	perms := GetAllPermissions()
+
+	// Currently there are there are 16 entity:action pairs in use.
+	assert.Equal(t, len(perms), 16)
+}