[gtk/wip/hadess/gtkbuilder-initable-gtk3: 2/2] tests: Add test for GtkBuilder GInitable support

[Bastien Nocera <hadess src gnome org>]

commit 090674700a8a2ac338d787a054c30b0e4924871e
Author: Bastien Nocera <hadess hadess net>
Date:   Wed Feb 9 11:03:57 2022 +0100

    tests: Add test for GtkBuilder GInitable support

 tests/meson.build    |   1 +
 tests/testbuilder.c  | 114 +++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/testbuilder.ui |  20 +++++++++
 3 files changed, 135 insertions(+)
---
diff --git a/tests/meson.build b/tests/meson.build
index 586fe2f45e..7d5fb6e4c7 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -26,6 +26,7 @@ gtk_tests = [
   ['testbbox'],
   ['testbox'],
   ['testboxcss'],
+  ['testbuilder'],
   ['testbuttons'],
   ['testcairo'],
   ['testcalendar'],
diff --git a/tests/testbuilder.c b/tests/testbuilder.c
new file mode 100644
index 0000000000..94266c9518
--- /dev/null
+++ b/tests/testbuilder.c
@@ -0,0 +1,114 @@
+#include <gtk/gtk.h>
+
+static gboolean should_fail = FALSE;
+
+
+#define BACON_TYPE_VIDEO_WIDGET              (bacon_video_widget_get_type ())
+G_DECLARE_FINAL_TYPE(BaconVideoWidget, bacon_video_widget, BACON, VIDEO_WIDGET, GtkOverlay)
+
+static void bacon_video_widget_initable_iface_init (GInitableIface *iface);
+
+struct _BaconVideoWidget
+{
+  GtkOverlay parent;
+  gboolean object_init;
+  gboolean initable_init;
+};
+
+G_DEFINE_TYPE_WITH_CODE (BaconVideoWidget, bacon_video_widget, GTK_TYPE_OVERLAY,
+                         G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE,
+                                                bacon_video_widget_initable_iface_init))
+
+static gboolean
+bacon_video_widget_initable_init (GInitable     *initable,
+                                  GCancellable  *cancellable,
+                                  GError       **error)
+{
+  BaconVideoWidget *bvw;
+
+  bvw = BACON_VIDEO_WIDGET (initable);
+
+  if (should_fail) {
+    g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED,
+                         "Initable widget was setup to fail.");
+    g_object_ref_sink (G_OBJECT (initable));
+    return FALSE;
+  }
+
+  bvw->initable_init = TRUE;
+
+  return TRUE;
+}
+
+static void
+bacon_video_widget_initable_iface_init (GInitableIface *iface)
+{
+  iface->init = bacon_video_widget_initable_init;
+}
+
+static void
+bacon_video_widget_class_init (BaconVideoWidgetClass *klass)
+{
+  /* empty */
+}
+
+static void
+bacon_video_widget_init (BaconVideoWidget *bvw)
+{
+  bvw->object_init = TRUE;
+}
+
+int main (int argc, char **argv)
+{
+  GtkBuilder *builder;
+  guint num_objects;
+  GError *error = NULL;
+  GObject *bvw;
+  GSList *list = NULL;
+
+  gtk_init (&argc, &argv);
+
+  builder = gtk_builder_new ();
+  num_objects = gtk_builder_add_from_file (builder, "testbuilder.ui", &error);
+  g_assert_cmpint (num_objects, >, 0);
+  g_assert_no_error (error);
+  bvw = gtk_builder_get_object (builder, "bvw");
+  g_assert_nonnull (bvw);
+  g_assert_true(BACON_VIDEO_WIDGET(bvw)->initable_init);
+  list = gtk_builder_get_objects (builder);
+  g_assert_cmpint (g_slist_length (list), ==, 3);
+  g_clear_pointer (&list, g_slist_free);
+  gtk_widget_destroy (GTK_WIDGET (gtk_builder_get_object (builder, "totem_main_window")));
+  g_clear_object (&builder);
+
+  builder = gtk_builder_new_from_file ("testbuilder.ui");
+  bvw = gtk_builder_get_object (builder, "bvw");
+  g_assert_nonnull (bvw);
+  g_assert_true(BACON_VIDEO_WIDGET(bvw)->initable_init);
+  list = gtk_builder_get_objects (builder);
+  g_assert_cmpint (g_slist_length (list), ==, 3);
+  g_clear_pointer (&list, g_slist_free);
+  gtk_widget_destroy (GTK_WIDGET (gtk_builder_get_object (builder, "totem_main_window")));
+  g_clear_object (&builder);
+
+  should_fail = TRUE;
+
+  builder = gtk_builder_new ();
+  num_objects = gtk_builder_add_from_file (builder, "testbuilder.ui", &error);
+  g_assert_error(error, G_IO_ERROR, G_IO_ERROR_FAILED);
+  g_clear_error (&error);
+  g_assert_cmpint (num_objects, ==, 0);
+  list = gtk_builder_get_objects (builder);
+  g_assert_cmpint (g_slist_length (list), ==, 2);
+  g_clear_pointer (&list, g_slist_free);
+  g_clear_object (&builder);
+
+  /* This calls g_error() so disabled
+  builder = gtk_builder_new_from_file ("testbuilder.ui");
+  bvw = gtk_builder_get_object (builder, "bvw");
+  g_assert_null (bvw);
+  g_clear_object (&builder);
+  */
+
+  return 0;
+}
diff --git a/tests/testbuilder.ui b/tests/testbuilder.ui
new file mode 100644
index 0000000000..d7c084dc80
--- /dev/null
+++ b/tests/testbuilder.ui
@@ -0,0 +1,20 @@
+<?xml version="1.0" ?>
+<!--*- mode: xml -*--><!DOCTYPE glade-interface
+  SYSTEM 'http://glade.gnome.org/glade-2.0.dtd'>
+<interface>
+  <object class="GtkWindow" id="totem_main_window">
+    <property name="can_focus">False</property>
+    <child>
+      <object class="GtkStack" id="tmw_main_stack">
+        <property name="visible">True</property>
+        <property name="homogeneous">True</property>
+        <child>
+          <object class="BaconVideoWidget" id="bvw"/>
+          <packing>
+            <property name="name">player</property>
+          </packing>
+        </child>
+      </object>
+    </child>
+  </object>
+</interface>