adding func to create new event

.gitignore

@@ -123,6 +123,7 @@ venv.bak/
 .vscode/
 Scripts/*
 pyvenv.cfg
+calender-venv/
 
 # Spyder project settings
 .spyderproject

app/routers/event.py

@@ -260,3 +260,32 @@ def delete_event(event_id: int,
         # if the deletion is successful
     return RedirectResponse(
         url="/calendar", status_code=status.HTTP_200_OK)
+
+
+def is_date_before(start_time: datetime, end_time: datetime) -> bool:
+    """Check if the start_date is smaller then the end_time"""
+    try:
+        return start_time < end_time
+    except TypeError:
+        return False
+
+
+def add_new_event(values: dict, db: Session) -> Optional[Event]:
+    """Get User values and the DB Session insert the values
+    to the DB and refresh it exception in case that the keys
+    in the dict is not match to the fields in the DB
+    return the Event Class item"""
+
+    if not is_date_before(values['start'], values['end']):
+        return None
+    try:
+        new_event = create_model(db, Event, **values)
+        create_model(
+            db, UserEvent,
+            user_id=values['owner_id'],
+            event_id=new_event.id
+        )
+        return new_event
+    except (AssertionError, AttributeError, TypeError) as e:
+        logger.exception(e)
+        return None

tests/test_event.py

@@ -1,13 +1,21 @@
-from datetime import datetime
+from datetime import datetime, timedelta
+
 
 import pytest
 from fastapi import HTTPException
+from fastapi.testclient import TestClient
 from starlette import status
+from sqlalchemy.orm import Session
+
 
+from app.main import app
 from app.database.models import Event
+from app.database.database import get_db
 from app.routers.event import (_delete_event, by_id, delete_event,
-                               check_change_dates_allowed, update_event,
-                               _update_event)
+                               update_event, check_change_dates_allowed,
+                               add_new_event, _update_event,
+                               is_date_before)
+
 
 CORRECT_EVENT_FORM_DATA = {
     'title': 'test title',
@@ -219,3 +227,54 @@ def test_successful_deletion(event_test_client, session, event):
 def test_deleting_an_event_does_not_exist(event_test_client, event):
     response = event_test_client.delete("/event/2")
     assert response.status_code == status.HTTP_404_NOT_FOUND
+
+
+class TestApp:
+
+    client = TestClient(app)
+    date_test_data = [datetime.today() - timedelta(1), datetime.today()]
+    event_test_data = {
+            'title': "Test Title",
+            "location": "Fake City",
+            "start": date_test_data[0],
+            "end": date_test_data[1],
+            "content": "Any Words",
+            "owner_id": 123}
+
+    @staticmethod
+    def test_get_db():
+        assert isinstance(next(get_db()), Session)
+
+    @staticmethod
+    def test_session_db():
+        assert get_db() is not None
+
+    @staticmethod
+    def check_is_date_before():
+        start = TestApp.date_test_data[0]
+        end = TestApp.date_test_data[1]
+        assert is_date_before(start, end)
+
+    @staticmethod
+    def test_bad_check_validation():
+        assert not is_date_before(
+            TestApp.date_test_data[0],
+            'bad value'
+                                )
+
+    @staticmethod
+    def test_add_event(session: Session):
+        assert add_new_event(TestApp.event_test_data, session) is not None
+
+    @staticmethod
+    def test_add_bad_event(session: Session):
+        bad_event_test_data = TestApp.event_test_data
+        bad_event_test_data['no_colume'] = 'some data'
+        assert add_new_event(bad_event_test_data, session) is None
+
+    @staticmethod
+    def test_add_bad_times_to_event(session: Session):
+        bad_event_test_data = TestApp.event_test_data
+        bad_event_test_data['start'] = TestApp.date_test_data[1]
+        bad_event_test_data['end'] = TestApp.date_test_data[0]
+        assert add_new_event(bad_event_test_data, session) is None