[gtk/misc-multiselection: 2/2] Add a test for multiselection persistence

[Matthias Clasen <matthiasc src gnome org>]

commit 8090e213de9d0924b3bf494d4af3ba51e081847a
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Jun 6 10:23:12 2020 -0400

    Add a test for multiselection persistence
    
    Add a test that verifies that newly added items
    are always unselected.

 testsuite/gtk/multiselection.c | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
---
diff --git a/testsuite/gtk/multiselection.c b/testsuite/gtk/multiselection.c
index 4e8622e0eb..2fd60aa1f5 100644
--- a/testsuite/gtk/multiselection.c
+++ b/testsuite/gtk/multiselection.c
@@ -372,6 +372,10 @@ test_selection (void)
   g_object_unref (selection);
 }
 
+/* Verify that select_range with exclusive = TRUE
+ * sends a selection-changed signal that covers
+ * preexisting items that got unselected
+ */
 static void
 test_select_range (void)
 {
@@ -403,6 +407,36 @@ test_select_range (void)
   g_object_unref (selection);
 }
 
+/* Test that removing and readding items
+ * clears the selected state.
+ */
+static void
+test_readd (void)
+{
+  GtkSelectionModel *selection;
+  GListStore *store;
+  gboolean ret;
+
+  store = new_store (1, 5, 1);
+
+  selection = new_model (store);
+  assert_model (selection, "1 2 3 4 5");
+  assert_selection (selection, "");
+  assert_selection_changes (selection, "");
+
+  ret = gtk_selection_model_select_range (selection, 2, 2, FALSE);
+  g_assert_true (ret);
+  assert_model (selection, "1 2 3 4 5");
+  assert_selection (selection, "3 4");
+  assert_selection_changes (selection, "2:2");
+
+  g_list_model_items_changed (G_LIST_MODEL (store), 1, 3, 3);
+  assert_changes (selection, "1-3+3");
+  assert_selection (selection, "");
+
+  g_object_unref (store);
+  g_object_unref (selection);
+}
 
 int
 main (int argc, char *argv[])
@@ -421,6 +455,7 @@ main (int argc, char *argv[])
 #endif
   g_test_add_func ("/multiselection/selection", test_selection);
   g_test_add_func ("/multiselection/select-range", test_select_range);
+  g_test_add_func ("/multiselection/readd", test_readd);
 
   return g_test_run ();
 }