test: API hit via BOM Update Tool

- test creation of log and it's impact

erpnext/manufacturing/doctype/bom_update_log/test_bom_update_log.py

@@ -1,9 +1,88 @@
 # Copyright (c) 2022, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 
-# import frappe
+import frappe
 from frappe.tests.utils import FrappeTestCase
 
+from erpnext.manufacturing.doctype.bom_update_log.bom_update_log import (
+	BOMMissingError,
+	run_bom_job,
+)
+from erpnext.manufacturing.doctype.bom_update_tool.bom_update_tool import enqueue_replace_bom
+
+test_records = frappe.get_test_records("BOM")
+
 
 class TestBOMUpdateLog(FrappeTestCase):
-	pass
+	"Test BOM Update Tool Operations via BOM Update Log."
+
+	def setUp(self):
+		bom_doc = frappe.copy_doc(test_records[0])
+		bom_doc.items[1].item_code = "_Test Item"
+		bom_doc.insert()
+
+		self.boms = frappe._dict(
+			current_bom="BOM-_Test Item Home Desktop Manufactured-001",
+			new_bom=bom_doc.name,
+		)
+
+		self.new_bom_doc = bom_doc
+
+	def tearDown(self):
+		frappe.db.rollback()
+
+		if self._testMethodName == "test_bom_update_log_completion":
+			# clear logs and delete BOM created via setUp
+			frappe.db.delete("BOM Update Log")
+			self.new_bom_doc.cancel()
+			self.new_bom_doc.delete()
+			frappe.db.commit()  # explicitly commit and restore to original state
+
+	def test_bom_update_log_validate(self):
+		"Test if BOM presence is validated."
+
+		with self.assertRaises(BOMMissingError):
+			enqueue_replace_bom(boms={})
+
+	def test_bom_update_log_queueing(self):
+		"Test if BOM Update Log is created and queued."
+
+		log = enqueue_replace_bom(
+			boms=self.boms,
+		)
+
+		self.assertEqual(log.docstatus, 1)
+		self.assertEqual(log.status, "Queued")
+
+	def test_bom_update_log_completion(self):
+		"Test if BOM Update Log handles job completion correctly."
+
+		log = enqueue_replace_bom(
+			boms=self.boms,
+		)
+
+		# Explicitly commits log, new bom (setUp) and replacement impact.
+		# Is run via background jobs IRL
+		run_bom_job(
+			doc=log,
+			boms=self.boms,
+			update_type="Replace BOM",
+		)
+		log.reload()
+
+		self.assertEqual(log.status, "Completed")
+
+		# teardown (undo replace impact) due to commit
+		boms = frappe._dict(
+			current_bom=self.boms.new_bom,
+			new_bom=self.boms.current_bom,
+		)
+		log2 = enqueue_replace_bom(
+			boms=self.boms,
+		)
+		run_bom_job(  # Explicitly commits
+			doc=log2,
+			boms=boms,
+			update_type="Replace BOM",
+		)
+		self.assertEqual(log2.status, "Completed")

erpnext/manufacturing/doctype/bom_update_tool/test_bom_update_tool.py

@@ -13,6 +13,8 @@ test_records = frappe.get_test_records("BOM")
 
 
 class TestBOMUpdateTool(FrappeTestCase):
+	"Test major functions run via BOM Update Tool."
+
 	def test_replace_bom(self):
 		current_bom = "BOM-_Test Item Home Desktop Manufactured-001"