119 lines
5.1 KiB
Python
119 lines
5.1 KiB
Python
from django.test import TestCase
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from django.contrib.auth import get_user_model
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from datetime import datetime, date, timedelta
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from .models import *
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class BillingTestCase(TestCase):
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def setUp(self):
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self.user = get_user_model().objects.create(
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username='jdoe',
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email='john.doe@domain.tld')
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def test_truth(self):
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self.assertEqual(1+1, 2)
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def test_basic_monthly_billing(self):
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one_time_price = 10
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recurring_price = 20
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description = "Test Product 1"
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# Three months: full, full, partial.
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starting_date = datetime.fromisoformat('2020-03-01')
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ending_date = datetime.fromisoformat('2020-05-08')
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# Create order to be billed.
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order = Order.objects.create(
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owner=self.user,
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starting_date=starting_date,
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ending_date=ending_date,
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recurring_period=RecurringPeriod.PER_MONTH)
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order.add_record(one_time_price, recurring_price, description)
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# Generate & check bill for first month: full recurring_price + setup.
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first_month_bills = order.bills # Initial bill generated at order creation.
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self.assertEqual(len(first_month_bills), 1)
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self.assertEqual(first_month_bills[0].total, one_time_price + recurring_price)
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# Generate & check bill for second month: full recurring_price.
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second_month_bills = Bill.generate_for(2020, 4, self.user)
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self.assertEqual(len(second_month_bills), 1)
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self.assertEqual(second_month_bills[0].total, recurring_price)
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# Generate & check bill for third and last month: partial recurring_price.
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third_month_bills = Bill.generate_for(2020, 5, self.user)
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self.assertEqual(len(third_month_bills), 1)
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# 31 days in May.
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self.assertEqual(float(third_month_bills[0].total),
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round((7/31) * recurring_price, AMOUNT_DECIMALS))
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# Check that running Bill.generate_for() twice does not create duplicates.
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self.assertEqual(len(Bill.generate_for(2020, 3, self.user)), 0)
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def test_basic_yearly_billing(self):
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one_time_price = 10
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recurring_price = 150
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description = "Test Product 1"
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starting_date = datetime.fromisoformat('2020-03-31T08:05:23')
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# Create order to be billed.
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order = Order.objects.create(
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owner=self.user,
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starting_date=starting_date,
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recurring_period=RecurringPeriod.PER_YEAR)
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order.add_record(one_time_price, recurring_price, description)
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# Generate & check bill for first year: recurring_price + setup.
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first_year_bills = order.bills # Initial bill generated at order creation.
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self.assertEqual(len(first_year_bills), 1)
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self.assertEqual(first_year_bills[0].starting_date.date(),
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date.fromisoformat('2020-03-31'))
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self.assertEqual(first_year_bills[0].ending_date.date(),
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date.fromisoformat('2021-03-30'))
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self.assertEqual(first_year_bills[0].total,
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recurring_price + one_time_price)
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# Generate & check bill for second year: recurring_price.
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second_year_bills = Bill.generate_for(2021, 3, self.user)
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self.assertEqual(len(second_year_bills), 1)
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self.assertEqual(second_year_bills[0].starting_date.date(),
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date.fromisoformat('2021-03-31'))
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self.assertEqual(second_year_bills[0].ending_date.date(),
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date.fromisoformat('2022-03-30'))
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self.assertEqual(second_year_bills[0].total, recurring_price)
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# Check that running Bill.generate_for() twice does not create duplicates.
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self.assertEqual(len(Bill.generate_for(2020, 3, self.user)), 0)
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self.assertEqual(len(Bill.generate_for(2020, 4, self.user)), 0)
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self.assertEqual(len(Bill.generate_for(2020, 2, self.user)), 0)
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self.assertEqual(len(Bill.generate_for(2021, 3, self.user)), 0)
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def test_basic_hourly_billing(self):
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one_time_price = 10
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recurring_price = 1.4
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description = "Test Product 1"
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starting_date = datetime.fromisoformat('2020-03-31T08:05:23')
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ending_date = datetime.fromisoformat('2020-04-01T11:13:32')
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# Create order to be billed.
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order = Order.objects.create(
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owner=self.user,
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starting_date=starting_date,
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ending_date=ending_date,
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recurring_period=RecurringPeriod.PER_HOUR)
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order.add_record(one_time_price, recurring_price, description)
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# Generate & check bill for first month: recurring_price + setup.
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first_month_bills = order.bills
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self.assertEqual(len(first_month_bills), 1)
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self.assertEqual(float(first_month_bills[0].total),
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round(16 * recurring_price, AMOUNT_DECIMALS) + one_time_price)
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# Generate & check bill for first month: recurring_price.
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second_month_bills = Bill.generate_for(2020, 4, self.user)
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self.assertEqual(len(second_month_bills), 1)
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self.assertEqual(float(second_month_bills[0].total),
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round(12 * recurring_price, AMOUNT_DECIMALS))
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