[gtk] Make the newly added test a bit more robust

[Matthias Clasen <matthiasc src gnome org>]

commit 6f25168db3de9ccd0727e1a0438f61bfc69f2ff5
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri May 3 02:15:07 2019 +0000

    Make the newly added test a bit more robust
    
    Follow the style of the other tests and provide
    style for both the test and ref.

 testsuite/reftests/label-fonts.css    | 6 +++++-
 testsuite/reftests/label-fonts.ref.ui | 1 +
 testsuite/reftests/label-fonts.ui     | 1 +
 3 files changed, 7 insertions(+), 1 deletion(-)
---
diff --git a/testsuite/reftests/label-fonts.css b/testsuite/reftests/label-fonts.css
index aa44addd77..2a250e03ce 100644
--- a/testsuite/reftests/label-fonts.css
+++ b/testsuite/reftests/label-fonts.css
@@ -1,3 +1,7 @@
-* {
+#label {
   font-family: nonexisting,Sans;
 }
+
+#reference {
+  font-family: Sans;
+}
diff --git a/testsuite/reftests/label-fonts.ref.ui b/testsuite/reftests/label-fonts.ref.ui
index b00757eeb8..55a881b7c7 100644
--- a/testsuite/reftests/label-fonts.ref.ui
+++ b/testsuite/reftests/label-fonts.ref.ui
@@ -4,6 +4,7 @@
     <property name="type">popup</property>
     <child>
       <object class="GtkLabel" id="label3">
+        <property name="name">reference</property>
         <property name="label" translatable="yes">abcdefg</property>
       </object>
     </child>
diff --git a/testsuite/reftests/label-fonts.ui b/testsuite/reftests/label-fonts.ui
index b00757eeb8..a7d468885f 100644
--- a/testsuite/reftests/label-fonts.ui
+++ b/testsuite/reftests/label-fonts.ui
@@ -4,6 +4,7 @@
     <property name="type">popup</property>
     <child>
       <object class="GtkLabel" id="label3">
+        <property name="name">label</property>
         <property name="label" translatable="yes">abcdefg</property>
       </object>
     </child>