def __init__(self, year_key: int = None) -> object:
"""
Constructor
:param year_key: int
"""
if year_key is None:
raise NoTaxYearSuppliedException
self._key = year_key
tax_year_data = TaxYear.load_tax_year_data(self._key)
self._name = tax_year_data['name']
self._personal_allowance = tax_year_data['personal_allowance']
self._rates = []
for rate in tax_year_data['rates']:
self._rates.append(TaxRate(**rate))
def print_calculation(self, gross_income: int):
print("Tax Year: {}".format(self.get_name()))
print("")
print("Gross Salary: {}".format(format_financial_figure(gross_income)))
print("")
print("Personal Allowance: {}".format(format_financial_figure(self.get_personal_allowance())))
print("")
print("Taxable Income: {}".format(format_financial_figure(self.get_taxable_income(gross_income))))
print("")
taxable_income = self.get_taxable_income(gross_income=gross_income)
for tax_rate in self.get_tax_rates():
tax_rate_tax_due = TaxRate.get_tax_due_for_tax_rate(taxable_income=taxable_income, tax_rate=tax_rate)
print("{}: {} @{}% = {}".format(tax_rate.get_name(), format_financial_figure(
tax_rate.get_taxable_amount(taxable_income=taxable_income)), tax_rate.get_percentage(),
format_financial_figure(tax_rate_tax_due)))
print("")
print("Total Tax Due: {}".format(format_financial_figure(self.get_total_tax_due(gross_income=gross_income))))
def test_get_tax_due_taxable_income_top_rate_1(self):
self.assertEqual(
2700,
TaxRate.get_tax_due_for_tax_rate(
taxable_income=20000, tax_rate=TestTaxRate._tax_rate_top_rate))
def test_get_tax_due_taxable_income_high_1(self):
self.assertEqual(
0.25,
TaxRate.get_tax_due_for_tax_rate(
taxable_income=1001, tax_rate=TestTaxRate._tax_rate_high))
def test_get_tax_due_taxable_income_low_3(self):
self.assertEqual(
100.00,
TaxRate.get_tax_due_for_tax_rate(
taxable_income=1001, tax_rate=TestTaxRate._tax_rate_low))
def test_get_tax_due_no_tax_due_zero_taxable_income_2(self):
self.assertEqual(
0.00,
TaxRate.get_tax_due_for_tax_rate(
taxable_income=0, tax_rate=TestTaxRate._tax_rate_high))
class TestTaxRate(unittest.TestCase):
_tax_rate_low = TaxRate(name='Low Tax Rate',
rate_percentage=10.00,
start=0,
end=1000)
_tax_rate_high = TaxRate(name='High Tax Rate',
rate_percentage=25.00,
start=1000,
end=100000)
_tax_rate_top_rate = TaxRate(name='Top Rate Tax',
rate_percentage=27.00,
start=10000)
_tax_rate_higher = TaxRate(name='Higher rate',
rate_percentage=40.00,
start=31581,
end=150000)
def test_get_taxable_amount_zero_1(self):
self.assertEqual(
0.00,
TestTaxRate._tax_rate_low.get_taxable_amount(taxable_income=0))
def test_get_taxable_amount_zero_2(self):
self.assertEqual(
0.00,
TestTaxRate._tax_rate_high.get_taxable_amount(taxable_income=1000))
def test_get_taxable_amount_1(self):
self.assertEqual(
1.00,
TestTaxRate._tax_rate_low.get_taxable_amount(taxable_income=1.00))
def test_get_taxable_amount_2(self):
self.assertEqual(
1000.00,
TestTaxRate._tax_rate_low.get_taxable_amount(
taxable_income=1001.00))
def test_get_taxable_amount_3(self):
self.assertEqual(
1.00,
TestTaxRate._tax_rate_high.get_taxable_amount(
taxable_income=1001.00))
def test_get_taxable_amount_4(self):
self.assertEqual(
69.00,
TestTaxRate._tax_rate_higher.get_taxable_amount(
taxable_income=31650.00))
def test_get_tax_due_no_tax_due_zero_taxable_income_1(self):
self.assertEqual(
0.00,
TaxRate.get_tax_due_for_tax_rate(
taxable_income=0, tax_rate=TestTaxRate._tax_rate_low))
def test_get_tax_due_no_tax_due_zero_taxable_income_2(self):
self.assertEqual(
0.00,
TaxRate.get_tax_due_for_tax_rate(
taxable_income=0, tax_rate=TestTaxRate._tax_rate_high))
def test_get_tax_due_taxable_income_low_1(self):
self.assertEqual(
50.00,
TaxRate.get_tax_due_for_tax_rate(
taxable_income=500, tax_rate=TestTaxRate._tax_rate_low))
def test_get_tax_due_taxable_income_low_2(self):
self.assertEqual(
100.00,
TaxRate.get_tax_due_for_tax_rate(
taxable_income=1000, tax_rate=TestTaxRate._tax_rate_low))
def test_get_tax_due_taxable_income_low_3(self):
self.assertEqual(
100.00,
TaxRate.get_tax_due_for_tax_rate(
taxable_income=1001, tax_rate=TestTaxRate._tax_rate_low))
def test_get_tax_due_taxable_income_high_1(self):
self.assertEqual(
0.25,
TaxRate.get_tax_due_for_tax_rate(
taxable_income=1001, tax_rate=TestTaxRate._tax_rate_high))
def test_get_tax_due_taxable_income_top_rate_1(self):
self.assertEqual(
2700,
TaxRate.get_tax_due_for_tax_rate(
taxable_income=20000, tax_rate=TestTaxRate._tax_rate_top_rate))
def get_total_tax_due(self, gross_income):
total_tax_due = 0.00
taxable_income = self.get_taxable_income(gross_income=gross_income)
for tax_rate in self.get_tax_rates():
total_tax_due += TaxRate.get_tax_due_for_tax_rate(taxable_income=taxable_income, tax_rate=tax_rate)
return total_tax_due