ft(Tests) Test the normalize_dates helper function

- Test that the `validate_dates` function works if dates are correct or wrong
- Fix issue with past dates. Now we always use current dates in the tests

[Finishes #168261941]

server/graphql_schemas/tests/utils/test_helpers.py

@@ -1,6 +1,12 @@
 """Module that tests helper methods"""
 from unittest.mock import patch
-from graphql_schemas.utils.helpers import update_event_status_on_calendar, remove_event_from_all_calendars
+import datetime
+
+from graphql_schemas.utils.helpers import (
+    update_event_status_on_calendar,
+    remove_event_from_all_calendars,
+    normalize_dates
+)
 from api.tests.base_test_setup import BaseSetup
 
 
@@ -65,3 +71,29 @@ def test_remove_event_from_all_calendar(self):
         self.assertEqual(mock_build.return_value.events.return_value.delete.called, True)
         self.assertEqual(mock_build.call_count, 1)
         mock_build_patcher.stop()
+
+    def test_normalize_dates_function_success(self):
+        """
+        Test that dates have to be in the present for them to be accepted
+        """
+        start_date = datetime.date.today()
+        end_date = start_date + datetime.timedelta(days=1)
+
+        result = normalize_dates(end_date, start_date, datetime.date.today())
+
+        self.assertEqual(
+            result, {'status': True, 'message': 'Validation successful'})
+
+    def test_normalize_dates_function_if_end_date_invalid(self):
+        """
+        Test that the event must end in the future, after the event start date
+        """
+        start_date = datetime.date.today() + datetime.timedelta(days=2)
+        end_date = datetime.date.today()
+
+        result = normalize_dates(end_date, start_date, datetime.date.today())
+
+        self.assertEqual(
+            result, {
+                'status': False,
+                'message': 'Sorry, end date must be after start date'})