108536234: created users and roles data and domain model.

You will need to run the /scripts/bootstrap.sh to create the database for test and the app.

tests/app/main/dao/test_users_dao.py

@@ -0,0 +1,32 @@
+from datetime import datetime
+
+import pytest
+import sqlalchemy
+
+from app.models import Users
+from app.main.dao import users_dao
+
+
+def test_insert_user_should_add_user(notifications_admin, notifications_admin_db):
+    user = Users(name='test insert',
+                 password='somepassword',
+                 email_address='test@insert.gov.uk',
+                 mobile_number='+441234123412',
+                 created_at=datetime.now(),
+                 role_id=1)
+
+    users_dao.insert_user(user)
+    saved_user = users_dao.get_user_by_id(user.id)
+    assert saved_user == user
+
+
+def test_insert_user_with_role_that_does_not_exist_fails(notifications_admin, notifications_admin_db):
+    user = Users(name='test insert',
+                 password='somepassword',
+                 email_address='test@insert.gov.uk',
+                 mobile_number='+441234123412',
+                 created_at=datetime.now(),
+                 role_id=100)
+    with pytest.raises(sqlalchemy.exc.IntegrityError) as error:
+        users_dao.insert_user(user)
+    assert 'insert or update on table "users" violates foreign key constraint "users_role_id_fkey"' in str(error.value)