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test(coupon_code): cover coupon validation and usage-count edges

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Add tests for the previously-untested branches of validate_coupon_code
(not-yet-valid, expired, maximum-use exhausted) and update_coupon_code_count
(releasing a use on cancel, and rejecting use beyond the maximum). Both
functions are now fully covered.
This commit is contained in:
Nabin Hait
2026-06-22 14:20:41 +05:30
parent b4c9827318
commit eaab71a99e
1 changed files with 63 additions and 0 deletions
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63
erpnext/accounts/doctype/coupon_code/test_coupon_code.py
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@@ -173,3 +173,66 @@ class TestCouponCode(ERPNextTestSuite):
# Clean up
coupon.delete()
def test_validate_coupon_code_rejections(self):
from frappe.utils import add_days, nowdate
from erpnext.accounts.doctype.pricing_rule.utils import validate_coupon_code
pricing_rule = frappe.db.get_value("Pricing Rule", {"title": "_Test Pricing Rule for _Test Item"})
def make_coupon(name, **kwargs):
frappe.delete_doc_if_exists("Coupon Code", name)
return frappe.get_doc(
{
"doctype": "Coupon Code",
"coupon_name": name,
"coupon_code": name,
"coupon_type": "Promotional",
"pricing_rule": pricing_rule,
**kwargs,
}
).insert(ignore_permissions=True)
with self.subTest("validity not yet started"):
make_coupon("_Test Coupon Future", valid_from=add_days(nowdate(), 5))
self.assertRaises(frappe.ValidationError, validate_coupon_code, "_Test Coupon Future")
with self.subTest("validity expired"):
make_coupon("_Test Coupon Expired", valid_upto=add_days(nowdate(), -5))
self.assertRaises(frappe.ValidationError, validate_coupon_code, "_Test Coupon Expired")
with self.subTest("maximum use exhausted"):
make_coupon("_Test Coupon Exhausted", maximum_use=2, used=2)
self.assertRaises(frappe.ValidationError, validate_coupon_code, "_Test Coupon Exhausted")
with self.subTest("valid coupon passes"):
make_coupon("_Test Coupon Valid", maximum_use=5, used=1, valid_upto=add_days(nowdate(), 5))
validate_coupon_code("_Test Coupon Valid") # no raise
def test_update_coupon_code_count_cancel_and_exhaust(self):
from erpnext.accounts.doctype.pricing_rule.utils import update_coupon_code_count
pricing_rule = frappe.db.get_value("Pricing Rule", {"title": "_Test Pricing Rule for _Test Item"})
frappe.delete_doc_if_exists("Coupon Code", "_Test Coupon Count")
frappe.get_doc(
{
"doctype": "Coupon Code",
"coupon_name": "_Test Coupon Count",
"coupon_code": "_Test Coupon Count",
"coupon_type": "Promotional",
"pricing_rule": pricing_rule,
"maximum_use": 2,
"used": 1,
}
).insert(ignore_permissions=True)
# cancelling a transaction releases one use
update_coupon_code_count("_Test Coupon Count", "cancelled")
self.assertEqual(frappe.db.get_value("Coupon Code", "_Test Coupon Count", "used"), 0)
# using up to the maximum is allowed, beyond it is rejected
update_coupon_code_count("_Test Coupon Count", "used")
update_coupon_code_count("_Test Coupon Count", "used")
self.assertEqual(frappe.db.get_value("Coupon Code", "_Test Coupon Count", "used"), 2)
self.assertRaises(frappe.ValidationError, update_coupon_code_count, "_Test Coupon Count", "used")