[libdazzle] tests: add hook to swap orientation

[Christian Hergert <chergert src gnome org>]

commit 2636788898b81e96d0397900de1fc9031d23e95a
Author: Christian Hergert <chergert redhat com>
Date:   Wed Jun 21 15:54:09 2017 -0700

    tests: add hook to swap orientation
    
    We have a small orientation bug and this exposes it in horizontal mode.

 tests/data/test-multi-paned.ui |    6 +++---
 tests/test-multi-paned.c       |   16 ++++++++++++++++
 2 files changed, 19 insertions(+), 3 deletions(-)
---
diff --git a/tests/data/test-multi-paned.ui b/tests/data/test-multi-paned.ui
index 6869041..11e4813 100644
--- a/tests/data/test-multi-paned.ui
+++ b/tests/data/test-multi-paned.ui
@@ -3,7 +3,7 @@
   <object class="GtkWindow" id="window">
     <property name="title">Test Panel</property>
     <child>
-      <object class="DzlMultiPaned">
+      <object class="DzlMultiPaned" id="paned">
         <property name="visible">true</property>
         <child>
           <object class="GtkButton">
@@ -18,8 +18,8 @@
           </object>
         </child>
         <child>
-          <object class="GtkButton">
-            <property name="label">Button</property>
+          <object class="GtkButton" id="swap">
+            <property name="label">Swap Orientation</property>
             <property name="expand">true</property>
             <property name="visible">true</property>
           </object>
diff --git a/tests/test-multi-paned.c b/tests/test-multi-paned.c
index f4f29e6..2174c3d 100644
--- a/tests/test-multi-paned.c
+++ b/tests/test-multi-paned.c
@@ -1,5 +1,15 @@
 #include <dazzle.h>
 
+static void
+swap_orientation (GtkWidget *button,
+                  GtkWidget *paned)
+{
+  GtkOrientation orientation;
+
+  orientation = gtk_orientable_get_orientation (GTK_ORIENTABLE (paned));
+  gtk_orientable_set_orientation (GTK_ORIENTABLE (paned), !orientation);
+}
+
 gint
 main (gint   argc,
       gchar *argv[])
@@ -7,6 +17,8 @@ main (gint   argc,
   GtkBuilder *builder = NULL;
   GtkWindow *window = NULL;
   GError *error = NULL;
+  GObject *button;
+  GObject *paned;
   g_autofree gchar *path = g_build_filename (TEST_DATA_DIR, "test-multi-paned.ui", NULL);
 
   gtk_init (&argc, &argv);
@@ -17,6 +29,10 @@ main (gint   argc,
   gtk_builder_add_from_file (builder, path, &error);
   g_assert_no_error (error);
 
+  paned = gtk_builder_get_object (builder, "paned");
+  button = gtk_builder_get_object (builder, "swap");
+  g_signal_connect (button, "clicked", G_CALLBACK (swap_orientation), paned);
+
   window = GTK_WINDOW (gtk_builder_get_object (builder, "window"));
   g_signal_connect (window, "delete-event", gtk_main_quit, NULL);