[gtk+] filechooserbutton: Test that the expected filename is shown

[Federico Mena Quintero <federico src gnome org>]

commit cc75ebec15d8fddbd0485e1b82a3c6c9e71f8a64
Author: Federico Mena Quintero <federico gnome org>
Date:   Thu Mar 7 12:53:00 2013 -0600

    filechooserbutton: Test that the expected filename is shown
    
    We do some gymnastics to pull the string out of the GtkButton or the GtkComboBox that is
    being used in GtkFileChooserButton to show the current selection when the dialog
    is inactive - namely, we look for the subwidget with the correct ATK role, and pull its
    accessible name.
    
    Currently the test fails; this is https://bugzilla.gnome.org/show_bug.cgi?id=691040#c18
    
    Signed-off-by: Federico Mena Quintero <federico gnome org>

 gtk/gtkfilechooserbutton.c |    2 +-
 gtk/tests/filechooser.c    |  156 ++++++++++++++++++++++++++++++++++++++-----
 2 files changed, 138 insertions(+), 20 deletions(-)
---
diff --git a/gtk/gtkfilechooserbutton.c b/gtk/gtkfilechooserbutton.c
index a14bd92..b41a412 100644
--- a/gtk/gtkfilechooserbutton.c
+++ b/gtk/gtkfilechooserbutton.c
@@ -103,7 +103,7 @@
 
 #define DEFAULT_TITLE          N_("Select a File")
 #define DESKTOP_DISPLAY_NAME   N_("Desktop")
-#define FALLBACK_DISPLAY_NAME  N_("(None)")
+#define FALLBACK_DISPLAY_NAME  N_("(None)") /* this string is used in gtk+/gtk/tests/filechooser.c - change 
it there if you change it here */
 #define FALLBACK_ICON_NAME     "stock_unknown"
 #define FALLBACK_ICON_SIZE     16
 
diff --git a/gtk/tests/filechooser.c b/gtk/tests/filechooser.c
index 8aa5993..04cf71b 100644
--- a/gtk/tests/filechooser.c
+++ b/gtk/tests/filechooser.c
@@ -37,6 +37,24 @@
 #include "gtk/gtkfilechooserdefault.h"
 #include "gtk/gtkfilechooserentry.h"
 
+#if 0
+static const char *
+get_action_name (GtkFileChooserAction action)
+{
+  switch (action)
+    {
+    case GTK_FILE_CHOOSER_ACTION_OPEN:          return "OPEN";
+    case GTK_FILE_CHOOSER_ACTION_SAVE:          return "SAVE";
+    case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER: return "SELECT_FOLDER";
+    case GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER: return "CREATE_FOLDER";
+
+    default:
+      g_assert_not_reached ();
+      return NULL;
+    }
+}
+#endif
+
 #ifdef BROKEN_TESTS
 static void
 log_test (gboolean passed, const char *test_name, ...)
@@ -53,8 +71,6 @@ log_test (gboolean passed, const char *test_name, ...)
   g_free (str);
 }
 
-static const char *get_action_name (GtkFileChooserAction action);
-
 typedef void (* SetFilenameFn) (GtkFileChooser *chooser, gpointer data);
 typedef void (* CompareFilenameFn) (GtkFileChooser *chooser, gpointer data);
 
@@ -376,6 +392,118 @@ sleep_in_main_loop (void)
 }
 
 static void
+build_children_list (GtkWidget *widget, gpointer data)
+{
+  GList **list;
+
+  list = data;
+  *list = g_list_prepend (*list, widget);
+}
+
+static GtkWidget *
+find_child_widget_with_atk_role (GtkWidget *widget, AtkRole role)
+{
+  AtkObject *accessible;
+  AtkRole a_role;
+
+  accessible = gtk_widget_get_accessible (widget);
+  a_role = atk_object_get_role (accessible);
+
+  if (a_role == role)
+    return widget;
+  else
+    {
+      GtkWidget *found_child;
+
+      found_child = NULL;
+
+      if (GTK_IS_CONTAINER (widget))
+       {
+         GList *children;
+         GList *l;
+
+         children = NULL;
+         gtk_container_forall (GTK_CONTAINER (widget), build_children_list, &children);
+
+         l = children;
+
+         while (l && !found_child)
+           {
+             GtkWidget *child;
+
+             child = GTK_WIDGET (l->data);
+
+             found_child = find_child_widget_with_atk_role (child, role);
+
+             l = l->next;
+           }
+
+         g_list_free (children);
+       }
+
+      return found_child;
+    }
+}
+
+static const char *
+get_atk_name_for_filechooser_button (GtkFileChooserButton *button)
+{
+  GtkFileChooserAction action;
+  GtkWidget *widget;
+  AtkObject *accessible;
+
+  action = gtk_file_chooser_get_action (GTK_FILE_CHOOSER (button));
+  g_assert (action == GTK_FILE_CHOOSER_ACTION_OPEN || action == GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER);
+
+  if (action == GTK_FILE_CHOOSER_ACTION_OPEN)
+    widget = find_child_widget_with_atk_role (GTK_WIDGET (button), ATK_ROLE_PUSH_BUTTON);
+  else
+    widget = find_child_widget_with_atk_role (GTK_WIDGET (button), ATK_ROLE_COMBO_BOX);
+
+  accessible = gtk_widget_get_accessible (widget);
+  return atk_object_get_name (accessible);
+}
+
+static void
+check_that_basename_is_shown (GtkFileChooserButton *button, const char *expected_filename)
+{
+  GtkFileChooserAction action;
+  const char *name_on_button;
+  char *expected_basename;
+
+  name_on_button = get_atk_name_for_filechooser_button (button);
+
+  action = gtk_file_chooser_get_action (GTK_FILE_CHOOSER (button));
+  g_assert (action == GTK_FILE_CHOOSER_ACTION_OPEN || action == GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER);
+
+  if (expected_filename)
+    expected_basename = g_path_get_basename (expected_filename);
+  else
+    expected_basename = NULL;
+
+  if (expected_basename)
+    g_assert_cmpstr (expected_basename, ==, name_on_button);
+  else
+    g_assert_cmpstr (name_on_button, ==, "(None)"); /* see gtkfilechooserbutton.c:FALLBACK_DISPLAY_NAME */ 
/* FIXME: how do we translate this? */
+
+  g_free (expected_basename);
+}
+
+static const char *
+get_expected_shown_filename (GtkFileChooserAction action, const char *folder_name, const char *filename)
+{
+  if (action == GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER)
+    {
+      if (filename)
+       return filename;
+      else
+       return folder_name;
+    }
+  else
+    return filename;
+}
+
+static void
 test_file_chooser_button (gconstpointer data)
 {
   const FileChooserButtonTest *setup = data;
@@ -398,7 +526,10 @@ test_file_chooser_button (gconstpointer data)
     gtk_file_chooser_select_filename (GTK_FILE_CHOOSER (fc_button), setup->initial_filename);
 
   gtk_widget_show_all (window);
-  wait_for_idle ();
+  sleep_in_main_loop ();
+
+  check_that_basename_is_shown (GTK_FILE_CHOOSER_BUTTON (fc_button),
+                               get_expected_shown_filename (setup->action, setup->initial_current_folder, 
setup->initial_filename));
 
   /* If there is a dialog to be opened, we actually test going through it a
    * couple of times.  This ensures that any state that the button frobs for
@@ -460,6 +591,9 @@ test_file_chooser_button (gconstpointer data)
          g_assert_cmpstr (filename, ==, setup->final_filename);
          g_free (filename);
        }
+
+      check_that_basename_is_shown (GTK_FILE_CHOOSER_BUTTON (fc_button),
+                                   get_expected_shown_filename (setup->action, setup->final_current_folder, 
setup->final_filename));
     }
 
   gtk_widget_destroy (window);
@@ -1275,22 +1409,6 @@ has_action (const GtkFileChooserAction *actions,
   return FALSE;
 }
 
-static const char *
-get_action_name (GtkFileChooserAction action)
-{
-  switch (action)
-    {
-    case GTK_FILE_CHOOSER_ACTION_OPEN:          return "OPEN";
-    case GTK_FILE_CHOOSER_ACTION_SAVE:          return "SAVE";
-    case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER: return "SELECT_FOLDER";
-    case GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER: return "CREATE_FOLDER";
-
-    default:
-      g_assert_not_reached ();
-      return NULL;
-    }
-}
-
 static GtkFileChooserDefault *
 get_impl_from_dialog (GtkWidget *dialog)
 {