fix(test): Handle explicit commit in create_custom_field

- `create_custom_field` cannot be used arbitrarily in tests since it explicitly commits to make sure schema changes are reflected
- Call it during setUpClass since 2 tests need it
- Call it first so that after the commit, the following test setup can be rolled back on class cleanup
- Rollback to the post setup state after each test so that there is no test-run data shared between tests

.github/helper/install.sh

@@ -32,7 +32,7 @@ bench get-app erpnext --branch version-15
 bench get-app hrms --branch version-15
 bench get-app banking "${GITHUB_WORKSPACE}"
 
-bench start &> bench_run_logs.txt &
+bench start &> bench_start.log &
 bench new-site --db-root-password root --admin-password admin test_site --install-app erpnext
 bench --site test_site install-app hrms
 bench --site test_site install-app banking

banking/klarna_kosma_integration/doctype/bank_reconciliation_tool_beta/test_bank_reconciliation_tool_beta.py

@@ -32,20 +32,28 @@
 
 
 class TestBankReconciliationToolBeta(AccountsTestMixin, FrappeTestCase):
-	def setUp(self) -> None:
+	@classmethod
+	def setUpClass(cls) -> None:
+		super().setUpClass()
+
+		create_custom_field(
+			"Sales Invoice", dict(fieldname="custom_ref_no", label="Ref No", fieldtype="Data")
+		)  # commits to db internally
+
 		create_bank()
-		self.gl_account = create_gl_account("_Test Bank Reco Tool")
-		self.bank_account = create_bank_account(gl_account=self.gl_account)
-		self.customer = create_customer(customer_name="ABC Inc.")
+		cls.gl_account = create_gl_account("_Test Bank Reco Tool")
+		cls.bank_account = create_bank_account(gl_account=cls.gl_account)
+		cls.customer = create_customer(customer_name="ABC Inc.")
 
-		self.create_item(
-			item_name="Reco Item", company="_Test Company", warehouse="Finished Goods - _TC"
+		cls.create_item(
+			cls, item_name="Reco Item", company="_Test Company", warehouse="Finished Goods - _TC"
 		)
+		frappe.db.savepoint(save_point="bank_reco_beta_before_tests")
 
 	def tearDown(self) -> None:
 		"""Runs after each test."""
 		# Make sure invoices are rolled back to not affect invoice count assertions
-		frappe.db.rollback()
+		frappe.db.rollback(save_point="bank_reco_beta_before_tests")
 
 	def test_unpaid_invoices_more_than_transaction(self):
 		"""
@@ -562,10 +570,6 @@ def test_multi_party_reconciliation(self):
 
 	def test_configurable_reference_field(self):
 		"""Test if configured reference field is considered."""
-		create_custom_field(
-			"Sales Invoice", dict(fieldname="custom_ref_no", label="Ref No", fieldtype="Data")
-		)
-
 		settings = frappe.get_single("Banking Settings")
 		settings.append(
 			"reference_fields", {"document_type": "Sales Invoice", "field_name": "custom_ref_no"}
@@ -622,9 +626,6 @@ def test_configurable_reference_field(self):
 
 	def test_no_configurable_reference_field(self):
 		"""Test if Name is considered as the reference field if not configured."""
-		create_custom_field(
-			"Sales Invoice", dict(fieldname="custom_ref_no", label="Ref No", fieldtype="Data")
-		)
 		bt = create_bank_transaction(
 			date=getdate(),
 			deposit=300,