def test_calculate_tax_two_brackets(self):
bracket_collection = TaxBracketCollection(configuration)
expected_tax_owed = 48535*0.15 + (70000-48535)*0.205
self.assertEqual(
expected_tax_owed,
bracket_collection.calculate_tax(70000)
)
def test_calculate_tax_one_bracket(self):
bracket_collection = TaxBracketCollection(configuration)
expected_tax_owed = 30000*0.15
self.assertEqual(
expected_tax_owed,
bracket_collection.calculate_tax(30000)
)
def test_calculate_tax_top_marginal(self):
bracket_collection = TaxBracketCollection(configuration)
expected_tax_owed = \
48535*0.15 + \
48534*0.205 + \
53404*0.26 + \
63895*0.29 + \
(500000 - 48535 - 48534 - 53404 - 63895)*0.33
self.assertEqual(
expected_tax_owed,
bracket_collection.calculate_tax(500000)
)
def calculate_effective_tax_rate(income, configuration):
tax_brackets = TaxBracketCollection(configuration)
return tax_brackets.effective_tax_rate(income)
def calculate_tax_owed(income, configuration):
tax_brackets = TaxBracketCollection(configuration)
return tax_brackets.calculate_tax(income)
def test_init(self):
bracket_collection = TaxBracketCollection(configuration)
self.assertTrue(isinstance(bracket_collection, TaxBracketCollection))
def test_error_calculate_tax_negative_income(self):
bracket_collection = TaxBracketCollection(configuration)
with self.assertRaises(Exception):
bracket_collection.calculate_tax(-1)
def test_calculate_effective_tax_rate(self):
bracket_collection = TaxBracketCollection(configuration)