[gtksourceview/wip/chergert/gsv-gtk4: 179/192] tests: create buffer from UI file

[Christian Hergert <chergert src gnome org>]

commit 3b91223b2b4cfc883c37bf584ce04641123f262c
Author: Christian Hergert <chergert redhat com>
Date:   Tue Apr 21 16:41:16 2020 -0700

    tests: create buffer from UI file

 tests/test-widget.ui | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/tests/test-widget.ui b/tests/test-widget.ui
index 7c3be7127..a04c9c773 100644
--- a/tests/test-widget.ui
+++ b/tests/test-widget.ui
@@ -423,6 +423,10 @@
             <property name="can-focus">1</property>
             <child>
               <object class="GtkSourceView" id="view">
+                <property name="buffer">
+                  <object class="GtkSourceBuffer">
+                  </object>
+                </property>
                 <property name="visible">True</property>
                 <property name="can-focus">True</property>
                 <property name="hexpand">True</property>