[gjs: 2/6] tests: Add pending test for composite template subclass

[Cosimo Cecchi <cosimoc src gnome org>]

commit fc6240ec8f996f200b7b2c48076fd70518670d6e
Author: Philip Chimento <philip chimento gmail com>
Date:   Sat Jan 20 22:51:20 2018 -0800

    tests: Add pending test for composite template subclass
    
    This test was sitting in a patch in Bugzilla. Add it, but mark it as
    pending until the functionality is fixed.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=768790

 installed-tests/js/testGtk.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/installed-tests/js/testGtk.js b/installed-tests/js/testGtk.js
index 7071935..736772e 100755
--- a/installed-tests/js/testGtk.js
+++ b/installed-tests/js/testGtk.js
@@ -64,8 +64,12 @@ const MyComplexGtkSubclassFromResource = GObject.registerClass({
     }
 });
 
-function validateTemplate(description, ClassName) {
-    describe(description, function () {
+const SubclassSubclass = GObject.registerClass(
+    class SubclassSubclass extends MyComplexGtkSubclass {});
+
+function validateTemplate(description, ClassName, pending=false) {
+    let suite = pending ? xdescribe : describe;
+    suite(description, function () {
         let win, content;
         beforeEach(function () {
             win = new Gtk.Window({ type: Gtk.WindowType.TOPLEVEL });
@@ -100,6 +104,7 @@ describe('Gtk overrides', function () {
 
     validateTemplate('UI template', MyComplexGtkSubclass);
     validateTemplate('UI template from resource', MyComplexGtkSubclassFromResource);
+    validateTemplate('Class inheriting from template class', SubclassSubclass, true);
 
     it('sets CSS names on classes', function () {
         expect(Gtk.Widget.get_css_name.call(MyComplexGtkSubclass)).toEqual('complex-subclass');