testRelationField: Test actual indexation, not only activity presence.

This avoids relying on implementation details by only relying on regular
API. This test should now be more robust in face of implementation changes.

bt5/erp5_ui_test/TestTemplateItem/portal_components/test.erp5.testRelationField.py

@@ -57,8 +57,12 @@ class TestMultiRelationField(ERP5TypeTestCase):
                  ['Category'], [('Category', 'Category')], 'title', '',
                  [([category.getUid()], category.getUid(), category.getId(),
                    None, 'subfield_field_my_foo_category_title_item')], '')
-    self.assertFalse(foo_object.hasActivity(method_id="recursiveImmediateReindexObject"))
+    foo_path = foo_object.getPath()
+    foo_uid = foo_object.getUid()
+    self.assertEqual([x.path for x in self.portal.portal_catalog(uid=foo_uid)], [foo_path])
+    foo_object.unindexObject()
+    self.tic()
+    self.assertEqual([x.path for x in self.portal.portal_catalog(uid=foo_uid)], [])
     editor.edit(foo_object)
-    self.commit()
-    self.assertTrue(foo_object.hasActivity(method_id="recursiveImmediateReindexObject"))
-
+    self.tic()
+    self.assertEqual([x.path for x in self.portal.portal_catalog(uid=foo_uid)], [foo_path])