fix: reimplement convert_to_epoch function

inventory_tools/inventory_tools/doctype/specification/specification.py

@@ -4,14 +4,13 @@
 import datetime
 import json
 import time
-from pytz import timezone
-from dateutil.relativedelta import relativedelta
+from pytz import UnknownTimeZoneError, timezone
 
 import frappe
 from frappe.core.doctype.doctype.doctype import no_value_fields, table_fields
 from frappe.model.document import Document
 from frappe.query_builder import DocType
-from frappe.utils.data import flt, get_datetime, getdate
+from frappe.utils.data import flt, get_datetime
 
 from erpnext.controllers.queries import get_fields
 
@@ -111,15 +110,23 @@ def applies_to(self, doc):
 
 
 def convert_to_epoch(date):
-	system_settings = frappe.get_cached_doc("System Settings", "System Settings")
-	d = datetime.datetime.now(
-		timezone(time.tzname if isinstance(time.tzname, (int, str)) else time.tzname[0])
-	)  # or some other local date )
-	utc_offset = d.utcoffset().total_seconds()
-	return (
-		(get_datetime(date) - datetime.timedelta(hours=12, seconds=int(utc_offset)))
-		- get_datetime("1970-1-1")
-	).total_seconds()
+	tzname = time.tzname if isinstance(time.tzname, (int, str)) else time.tzname[0]
+
+	try:
+		tz = timezone(tzname)
+	except UnknownTimeZoneError:
+		# default to beginning of epoch
+		return
+
+	d = datetime.datetime.now(tz)  # or some other local date
+	utc_offset = d.utcoffset()
+	if utc_offset:
+		utc_offset_seconds = utc_offset.total_seconds()
+		offset_d = (
+			get_datetime(date) - datetime.timedelta(hours=12, seconds=int(utc_offset_seconds))
+		) - get_datetime("1970-01-01")
+		return offset_d.total_seconds()
+	return
 
 
 def convert_from_epoch(date):

inventory_tools/tests/setup.py

@@ -2,24 +2,17 @@
 # For license information, please see license.txt
 
 import datetime
-import types
-from itertools import groupby
 
 import frappe
-from frappe.desk.page.setup_wizard.setup_wizard import setup_complete
-from frappe.utils.data import add_months, flt, getdate, nowdate, get_datetime
-
-from erpnext.accounts.doctype.account.account import update_account_number
 from erpnext.manufacturing.doctype.production_plan.production_plan import (
 	get_items_for_material_requests,
 )
-from erpnext.setup.utils import enable_all_roles_and_domains, set_defaults_for_tests
-from erpnext.stock.get_item_details import get_item_details
-
+from erpnext.setup.utils import set_defaults_for_tests
+from frappe.desk.page.setup_wizard.setup_wizard import setup_complete
+from frappe.utils.data import add_months, flt, getdate, nowdate, get_datetime
 from webshop.webshop.doctype.website_item.website_item import make_website_item
 
 from inventory_tools.tests.fixtures import (
-	attributes,
 	boms,
 	customers,
 	items,