tests: base-test-fixure: make sure core is done before destroying it

tests/common/base-test-fixture.h

@@ -92,11 +92,32 @@ wp_base_test_fixture_setup (WpBaseTestFixture * self, WpBaseTestFlags flags)
   }
 }
 
+static void
+done_callback (WpCore *core, GAsyncResult *res, WpBaseTestFixture *self)
+{
+  g_autoptr (GError) error = NULL;
+  g_assert_true (wp_core_sync_finish (core, res, &error));
+  g_assert_null (error);
+  g_main_loop_quit (self->loop);
+}
+
 static void
 wp_base_test_fixture_teardown (WpBaseTestFixture * self)
 {
-  g_main_context_pop_thread_default (self->context);
+  /* wait for all client core pending tasks to be done */
+  if (self->client_core && wp_core_is_connected (self->client_core)) {
+    wp_core_sync (self->client_core, NULL, (GAsyncReadyCallback) done_callback,
+        self);
+    g_main_loop_run (self->loop);
+  }
 
+  /* wait for all core pending tasks to be done */
+  if (self->core && wp_core_is_connected (self->core)) {
+    wp_core_sync (self->core, NULL, (GAsyncReadyCallback) done_callback, self);
+    g_main_loop_run (self->loop);
+  }
+
+  g_main_context_pop_thread_default (self->context);
   g_clear_object (&self->client_core);
   g_clear_object (&self->core);
   g_clear_pointer (&self->timeout_source, g_source_unref);