Fix default param in working hours utility

app/workingHours.py

@@ -1,6 +1,9 @@
 from datetime import time, datetime, timedelta
 
-def is_working_hours(date = datetime.now()):
+def is_working_hours(date = None):
+    if not date:
+        date = datetime.now()
+
     if date.weekday() >= 5:
         return False
 
@@ -10,7 +13,10 @@ def is_working_hours(date = datetime.now()):
     current_time = date.time()
     return start <= current_time <= end
 
-def potential_midday_upload(date = datetime.now()):
+def potential_midday_upload(date = None):
+    if not date:
+        date = datetime.now()
+
     if date.weekday() >= 5:
         return False
 
@@ -19,7 +25,10 @@ def potential_midday_upload(date = datetime.now()):
     current_time = date.time()
     return midday_upload_time <= current_time
 
-def next_working_hour(date = datetime.now()):
+def next_working_hour(date = None):
+    if not date:
+        date = datetime.now()
+
     if is_working_hours(date):
         return date