test: Add test coverage for bank clearance
diff --git a/erpnext/accounts/doctype/bank_clearance/test_bank_clearance.py b/erpnext/accounts/doctype/bank_clearance/test_bank_clearance.py
index 706fbbe..fbc44ee 100644
--- a/erpnext/accounts/doctype/bank_clearance/test_bank_clearance.py
+++ b/erpnext/accounts/doctype/bank_clearance/test_bank_clearance.py
@@ -1,9 +1,126 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 
-# import frappe
 import unittest
 
+import frappe
+from frappe.utils import add_months, getdate
+
+from erpnext.accounts.doctype.payment_entry.test_payment_entry import get_payment_entry
+from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice
+from erpnext.loan_management.doctype.loan.test_loan import (
+	create_loan,
+	create_loan_accounts,
+	create_loan_type,
+	create_repayment_entry,
+	make_loan_disbursement_entry,
+)
+
 
 class TestBankClearance(unittest.TestCase):
-	pass
+	@classmethod
+	def setUpClass(cls):
+		make_bank_account()
+		create_loan_accounts()
+		create_loan_masters()
+		add_transactions()
+
+	@classmethod
+	def tearDownClass(cls):
+		payment_entry = frappe.get_doc(
+			"Payment Entry", {"party_name": "_Test Supplier", "paid_from": "_Test Bank Clearance - _TC"}
+		)
+		payment_entry.cancel()
+		payment_entry.delete()
+
+		loan = frappe.get_doc("Loan", {"applicant": "_Test Customer"})
+
+		ld_doc = frappe.get_doc("Loan Disbursement", {"against_loan": loan.name})
+		ld_doc.cancel()
+		ld_doc.delete()
+
+		lr_doc = frappe.get_doc("Loan Repayment", {"against_loan": loan.name})
+		lr_doc.cancel()
+		lr_doc.delete()
+
+		lia = frappe.get_doc("Loan Interest Accrual", {"loan": loan.name})
+		lia.delete()
+
+		plia = frappe.get_doc("Process Loan Interest Accrual", {"loan": loan.name})
+		plia.cancel()
+		plia.delete()
+
+		loan.load_from_db()
+		loan.cancel()
+		loan.flags.ignore_links = True
+		loan.delete()
+
+	# Basic test case to test if bank clearance tool doesn't break
+	# Detailed test can be added later
+	def test_bank_clearance(self):
+		bank_clearance = frappe.get_doc("Bank Clearance")
+		bank_clearance.account = "_Test Bank Clearance - _TC"
+		bank_clearance.from_date = add_months(getdate(), -1)
+		bank_clearance.to_date = getdate()
+		bank_clearance.get_payment_entries()
+		self.assertEqual(len(bank_clearance.payment_entries), 3)
+
+
+def make_bank_account():
+	if not frappe.db.get_value("Account", "_Test Bank Clearance - _TC"):
+		frappe.get_doc(
+			{
+				"doctype": "Account",
+				"account_type": "Bank",
+				"account_name": "_Test Bank Clearance",
+				"company": "_Test Company",
+				"parent_account": "Bank Accounts - _TC",
+			}
+		).insert()
+
+
+def create_loan_masters():
+	create_loan_type(
+		"Clearance Loan",
+		2000000,
+		13.5,
+		25,
+		0,
+		5,
+		"Cash",
+		"_Test Bank Clearance - _TC",
+		"_Test Bank Clearance - _TC",
+		"Loan Account - _TC",
+		"Interest Income Account - _TC",
+		"Penalty Income Account - _TC",
+	)
+
+
+def add_transactions():
+	make_payment_entry()
+	make_loan()
+
+
+def make_loan():
+	loan = create_loan(
+		"_Test Customer",
+		"Clearance Loan",
+		280000,
+		"Repay Over Number of Periods",
+		20,
+		applicant_type="Customer",
+	)
+	loan.submit()
+	make_loan_disbursement_entry(loan.name, loan.loan_amount, disbursement_date=getdate())
+	repayment_entry = create_repayment_entry(loan.name, "_Test Customer", getdate(), loan.loan_amount)
+	repayment_entry.save()
+	repayment_entry.submit()
+
+
+def make_payment_entry():
+	pi = make_purchase_invoice(supplier="_Test Supplier", qty=1, rate=690)
+	pe = get_payment_entry("Purchase Invoice", pi.name, bank_account="_Test Bank Clearance - _TC")
+	pe.reference_no = "Conrad Oct 18"
+	pe.reference_date = "2018-10-24"
+	pe.insert()
+	pe.submit()