[gtk/wip/exalm/test: 28/37] tests: Fix testoverlay

[Alexander Mikhaylenko <alexm src gnome org>]

commit 4361a884bfb7132942da54c95566e7bac1844656
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Mon May 11 19:13:04 2020 +0500

    tests: Fix testoverlay
    
    Stop using child properties and margin property.

 tests/testoverlay.c | 29 ++++++++++++++++-------------
 1 file changed, 16 insertions(+), 13 deletions(-)
---
diff --git a/tests/testoverlay.c b/tests/testoverlay.c
index 565adf549c..d7187be70a 100644
--- a/tests/testoverlay.c
+++ b/tests/testoverlay.c
@@ -272,7 +272,10 @@ static const gchar *buffer =
 "            <property name='label'>Witty remark goes here</property>"
 "            <property name='halign'>end</property>"
 "            <property name='valign'>end</property>"
-"            <property name='margin'>4</property>"
+"            <property name='margin-top'>4</property>"
+"            <property name='margin-bottom'>4</property>"
+"            <property name='margin-start'>4</property>"
+"            <property name='margin-end'>4</property>"
 "          </object>"
 "        </child>"
 "        <child>"
@@ -280,20 +283,20 @@ static const gchar *buffer =
 "            <child>"
 "              <object class='GtkLabel' id='left'>"
 "                <property name='label'>Left</property>"
+"                <layout>"
+"                  <property name='left-attach'>0</property>"
+"                  <property name='top-attach'>0</property>"
+"                </layout>"
 "              </object>"
-"              <packing>"
-"                <property name='left_attach'>0</property>"
-"                <property name='top_attach'>0</property>"
-"              </packing>"
 "            </child>"
 "            <child>"
 "              <object class='GtkLabel' id='right'>"
 "                <property name='label'>Right</property>"
+"                <layout>"
+"                  <property name='left-attach'>2</property>"
+"                  <property name='top-attach'>0</property>"
+"                </layout>"
 "              </object>"
-"              <packing>"
-"                <property name='left_attach'>2</property>"
-"                <property name='top_attach'>0</property>"
-"              </packing>"
 "            </child>"
 "            <child>"
 "              <object class='GtkTextView' id='text'>"
@@ -301,11 +304,11 @@ static const gchar *buffer =
 "                 <property name='height-request'>200</property>"
 "                 <property name='hexpand'>True</property>"
 "                 <property name='vexpand'>True</property>"
+"                <layout>"
+"                  <property name='left-attach'>1</property>"
+"                  <property name='top-attach'>0</property>"
+"                </layout>"
 "              </object>"
-"              <packing>"
-"                <property name='left_attach'>1</property>"
-"                <property name='top_attach'>0</property>"
-"              </packing>"
 "            </child>"
 "          </object>"
 "        </child>"