# Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
# License: GNU General Public License v3. See license.txt


import frappe
from frappe.tests import IntegrationTestCase, change_settings
from frappe.utils import add_days, today

from erpnext.buying.doctype.supplier_quotation.supplier_quotation import make_purchase_order
from erpnext.controllers.accounts_controller import InvalidQtyError


class TestPurchaseOrder(IntegrationTestCase):
	def test_supplier_quotation_qty(self):
		sq = frappe.copy_doc(self.globalTestRecords["Supplier Quotation"][0])
		sq.items[0].qty = 0
		with self.assertRaises(InvalidQtyError):
			sq.save()

		# No error with qty=1
		sq.items[0].qty = 1
		sq.save()
		self.assertEqual(sq.items[0].qty, 1)

	def test_supplier_quotation_zero_qty(self):
		"""
		Test if RFQ with zero qty (Unit Price Item) is conditionally allowed.
		"""
		sq = frappe.copy_doc(self.globalTestRecords["Supplier Quotation"][0])
		sq.items[0].qty = 0

		with change_settings("Buying Settings", {"allow_zero_qty_in_supplier_quotation": 1}):
			sq.save()
			self.assertEqual(sq.items[0].qty, 0)

	def test_make_purchase_order(self):
		sq = frappe.copy_doc(self.globalTestRecords["Supplier Quotation"][0]).insert()

		self.assertRaises(frappe.ValidationError, make_purchase_order, sq.name)

		sq = frappe.get_doc("Supplier Quotation", sq.name)
		sq.submit()
		po = make_purchase_order(sq.name)

		self.assertEqual(po.doctype, "Purchase Order")
		self.assertEqual(len(po.get("items")), len(sq.get("items")))

		po.naming_series = "_T-Purchase Order-"

		for doc in po.get("items"):
			if doc.get("item_code"):
				doc.set("schedule_date", add_days(today(), 1))

		po.insert()

	@IntegrationTestCase.change_settings("Buying Settings", {"allow_zero_qty_in_supplier_quotation": 1})
	def test_map_purchase_order_from_zero_qty_supplier_quotation(self):
		sq = frappe.copy_doc(self.globalTestRecords["Supplier Quotation"][0])
		sq.items[0].qty = 0
		sq.submit()

		po = make_purchase_order(sq.name)
		self.assertEqual(len(po.get("items")), 1)
		self.assertEqual(po.get("items")[0].qty, 0)
		self.assertEqual(po.get("items")[0].item_code, sq.get("items")[0].item_code)