[gnome-todo] tests: Set task's list in DummyProvider

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit bc37eaf6ea2c4bb4498fe171ae5850410d820f05
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Wed Sep 18 13:39:54 2019 -0300

    tests: Set task's list in DummyProvider

 tests/dummy-provider.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/tests/dummy-provider.c b/tests/dummy-provider.c
index 184163c..fde9944 100644
--- a/tests/dummy-provider.c
+++ b/tests/dummy-provider.c
@@ -363,6 +363,7 @@ dummy_provider_generate_task_list (DummyProvider *self)
       title = g_strdup_printf ("%d", i);
 
       task = gtd_task_new ();
+      gtd_task_set_list (task, list);
       gtd_object_set_uid (GTD_OBJECT (task), uuid);
       gtd_task_set_title (task, title);
       gtd_task_set_position (task, n_generated_tasks++);
@@ -378,6 +379,7 @@ dummy_provider_generate_task_list (DummyProvider *self)
           subtask_title = g_strdup_printf ("%d:%d", i, j);
 
           subtask = gtd_task_new ();
+          gtd_task_set_list (subtask, list);
           gtd_object_set_uid (GTD_OBJECT (subtask), subtask_uuid);
           gtd_task_set_title (subtask, subtask_title);
           gtd_task_set_position (subtask, n_generated_tasks++);