test: ledger monitoring function

(cherry picked from commit 4776d660b5)

erpnext/accounts/doctype/ledger_health/test_ledger_health.py

@@ -1,9 +1,109 @@
 # Copyright (c) 2024, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 
-# import frappe
+import frappe
+from frappe import qb
 from frappe.tests.utils import FrappeTestCase
+from frappe.utils import nowdate
+
+from erpnext.accounts.test.accounts_mixin import AccountsTestMixin
+from erpnext.accounts.utils import run_ledger_health_checks
 
 
-class TestLedgerHealth(FrappeTestCase):
-	pass
+class TestLedgerHealth(AccountsTestMixin, FrappeTestCase):
+	def setUp(self):
+		self.create_company()
+		self.create_customer()
+		self.configure_monitoring_tool()
+		self.clear_old_entries()
+
+	def tearDown(self):
+		frappe.db.rollback()
+
+	def configure_monitoring_tool(self):
+		monitor_settings = frappe.get_doc("Ledger Health Monitor")
+		monitor_settings.enable_health_monitor = True
+		monitor_settings.enable_for_last_x_days = 60
+		monitor_settings.debit_credit_mismatch = True
+		monitor_settings.general_and_payment_ledger_mismatch = True
+		exists = [x for x in monitor_settings.companies if x.company == self.company]
+		if not exists:
+			monitor_settings.append("companies", {"company": self.company})
+		monitor_settings.save()
+
+	def clear_old_entries(self):
+		super(TestLedgerHealth, self).clear_old_entries()
+		lh = qb.DocType("Ledger Health")
+		qb.from_(lh).delete().run()
+
+	def create_journal(self):
+		je = frappe.new_doc("Journal Entry")
+		je.company = self.company
+		je.voucher_type = "Journal Entry"
+		je.posting_date = nowdate()
+		je.append(
+			"accounts",
+			{
+				"account": self.debit_to,
+				"party_type": "Customer",
+				"party": self.customer,
+				"debit_in_account_currency": 10000,
+			},
+		)
+		je.append("accounts", {"account": self.income_account, "credit_in_account_currency": 10000})
+		je.save().submit()
+		self.je = je
+
+	def test_debit_credit_mismatch(self):
+		self.create_journal()
+
+		# manually cause debit-credit mismatch
+		gle = frappe.db.get_all(
+			"GL Entry", filters={"voucher_no": self.je.name, "account": self.income_account}
+		)[0]
+		frappe.db.set_value("GL Entry", gle.name, "credit", 8000)
+
+		run_ledger_health_checks()
+		expected = {
+			"voucher_type": self.je.doctype,
+			"voucher_no": self.je.name,
+			"debit_credit_mismatch": True,
+			"general_and_payment_ledger_mismatch": False,
+		}
+		actual = frappe.db.get_all(
+			"Ledger Health",
+			fields=[
+				"voucher_type",
+				"voucher_no",
+				"debit_credit_mismatch",
+				"general_and_payment_ledger_mismatch",
+			],
+		)
+		self.assertEqual(len(actual), 1)
+		self.assertEqual(expected, actual[0])
+
+	def test_gl_and_pl_mismatch(self):
+		self.create_journal()
+
+		# manually cause GL and PL discrepancy
+		ple = frappe.db.get_all("Payment Ledger Entry", filters={"voucher_no": self.je.name})[0]
+		frappe.db.set_value("Payment Ledger Entry", ple.name, "amount", 11000)
+
+		run_ledger_health_checks()
+		expected = {
+			"voucher_type": self.je.doctype,
+			"voucher_no": self.je.name,
+			"debit_credit_mismatch": False,
+			"general_and_payment_ledger_mismatch": True,
+		}
+		actual = frappe.db.get_all(
+			"Ledger Health",
+			fields=[
+				"voucher_type",
+				"voucher_no",
+				"debit_credit_mismatch",
+				"general_and_payment_ledger_mismatch",
+			],
+		)
+		self.assertEqual(len(actual), 1)
+		self.assertEqual(expected, actual[0])