[gimp] app: test-ui.c: use gimp_channel_is_empty() to check for a selection

[Michael Natterer <mitch src gnome org>]

commit 64e506a0521b627bfca238d6a35f2d8ccf32d92a
Author: Michael Natterer <mitch gimp org>
Date:   Wed Jul 1 11:55:26 2015 +0200

    app: test-ui.c: use gimp_channel_is_empty() to check for a selection

 app/tests/test-ui.c |   14 ++++----------
 1 files changed, 4 insertions(+), 10 deletions(-)
---
diff --git a/app/tests/test-ui.c b/app/tests/test-ui.c
index 3b6df6e..857d910 100644
--- a/app/tests/test-ui.c
+++ b/app/tests/test-ui.c
@@ -364,11 +364,9 @@ alt_click_is_layer_to_selection (gconstpointer data)
   gtk_tree_view = gtk_test_find_widget (dockable,
                                         "Lock:",
                                         GTK_TYPE_TREE_VIEW);
-  
+
   /* First make sure there is no selection */
-  g_assert (! gimp_channel_bounds (selection,
-                                   NULL, NULL, /*x1, y1*/
-                                   NULL, NULL  /*x2, y2*/));
+  g_assert (gimp_channel_is_empty (selection));
 
   /* Now simulate alt-click on the background layer */
   g_assert (gimp_ui_synthesize_click (gtk_tree_view,
@@ -381,9 +379,7 @@ alt_click_is_layer_to_selection (gconstpointer data)
   /* Make sure we got a selection and that the active layer didn't
    * change
    */
-  g_assert (gimp_channel_bounds (selection,
-                                 NULL, NULL, /*x1, y1*/
-                                 NULL, NULL  /*x2, y2*/));
+  g_assert (! gimp_channel_is_empty (selection));
   g_assert (gimp_image_get_active_layer (image) == active_layer);
 
   /* Now simulate alt-click on the empty layer */
@@ -397,9 +393,7 @@ alt_click_is_layer_to_selection (gconstpointer data)
   /* Make sure that emptied the selection and that the active layer
    * still didn't change
    */
-  g_assert (! gimp_channel_bounds (selection,
-                                   NULL, NULL, /*x1, y1*/
-                                   NULL, NULL  /*x2, y2*/));
+  g_assert (gimp_channel_is_empty (selection));
   g_assert (gimp_image_get_active_layer (image) == active_layer);
 #endif
 }