def setUp(self):
""" Builds stock variables to test with. """
self.initial_year = 2000
# Simple tax treatment: 50% tax rate across the board.
tax = Tax(tax_brackets={self.initial_year: {0: 0.5}})
# A person who is paid $1000 gross ($500 withheld):
timing = Timing(frequency='BW')
self.person1 = Person(initial_year=self.initial_year,
name="Test 1",
birth_date="1 January 1980",
retirement_date="31 December 2045",
gross_income=1000,
tax_treatment=tax,
payment_timing=timing)
# A person who is paid $500 gross ($250 withheld):
self.person2 = Person(initial_year=self.initial_year,
name="Test 2",
birth_date="1 January 1982",
retirement_date="31 December 2047",
gross_income=500,
tax_treatment=tax,
payment_timing=timing)
# An account owned by person1 with $100 to withdraw
self.account1 = Account(owner=self.person1, balance=100, rate=0)
# An account owned by person2 with $200 to withdraw
self.account2 = Account(owner=self.person2, balance=100, rate=0)
# An account that belongs in some sense to both people
# with $50 to withdraw
self.account_joint = Account(owner=self.person1, balance=100, rate=0)
self.person2.accounts.add(self.account_joint)
self.forecast = TaxForecast(initial_year=self.initial_year,
people={self.person1, self.person2},
tax_treatment=tax)
def setUp(self):
""" Builds stock variables to test with. """
self.initial_year = 2000
# Simple tax treatment: 50% tax rate across the board.
tax = Tax(tax_brackets={self.initial_year: {0: 0.5}})
# A person who is paid $200 gross ($100 net) every 2 weeks:
timing = Timing(frequency='BW')
self.person1 = Person(initial_year=self.initial_year,
name="Test 1",
birth_date="1 January 1980",
retirement_date="31 December 2045",
gross_income=5200,
tax_treatment=tax,
payment_timing=timing)
# A person who is paid $100 gross ($50 net) every 2 weeks:
self.person2 = Person(initial_year=self.initial_year,
name="Test 2",
birth_date="1 January 1982",
retirement_date="31 December 2047",
gross_income=2600,
tax_treatment=tax,
payment_timing=timing)
# Track inflows from employment:
self.available = {0.5 + i / 26: 150 for i in range(26)}
self.total_available = sum(self.available.values())
# Contribute 50% of net income (i.e. $3900):
self.strategy = LivingExpensesStrategy(
strategy=LivingExpensesStrategy.strategy_gross_percent, rate=0.5)
self.forecast = LivingExpensesForecast(
initial_year=self.initial_year,
people={self.person1, self.person2},
living_expenses_strategy=self.strategy)
def setUp_decimal(self):
""" Set up stock variables with Decimal inputs. """
self.initial_year = 2000
# Live on $24000/yr while working and $12000/yr in retirement:
self.working = LivingExpensesStrategy(
LivingExpensesStrategy.strategy_const_living_expenses,
base_amount=Decimal(24000))
self.retirement = LivingExpensesStrategy(
LivingExpensesStrategy.strategy_const_living_expenses,
base_amount=Decimal(12000))
self.strategy = LivingExpensesStrategySchedule(self.working,
self.retirement)
# Simple tax treatment: 50% tax rate across the board.
tax = Tax(tax_brackets={self.initial_year: {Decimal(0): Decimal(0.5)}})
# Set up a person with $50000 gross income, $2000 net income:
self.person1 = Person(
initial_year=self.initial_year,
name="Test 1",
birth_date="1 January 1980",
retirement_date="31 December 2001", # next year
gross_income=Decimal(50000),
tax_treatment=tax,
payment_timing=Timing(frequency="BW"))
self.people = {self.person1}
def test_next(self):
""" Test next_year to confirm that properties are advanced. """
initial_year = 2017
gross_income = 100
tax = Tax({initial_year: {
0: 0,
200: 0.5,
1000: 0.75
}},
inflation_adjust={
2017: 1,
2018: 1,
2019: 1,
2020: 1
},
personal_deduction={2017: 0})
person = Person(initial_year,
'Name',
2000,
raise_rate=2.0,
retirement_date=self.retirement_date,
gross_income=gross_income,
tax_treatment=tax)
self.assertEqual(person.gross_income, gross_income)
self.assertEqual(person.net_income, Money(100))
self.assertEqual(person.this_year, initial_year)
person.next_year() # 200% raise - gross income is now $300
self.assertEqual(person.gross_income, Money(300))
self.assertEqual(person.net_income, Money(250))
self.assertEqual(person.this_year, initial_year + 1)
def setUp_decimal(self):
""" Builds stock variables with Decimal inputs. """
# pylint: disable=invalid-name
# Pylint doesn't like `setUp_decimal`, but it's not our naming
# convention, so don't complain to us!
# pylint: enable=invalid-name
self.initial_year = 2000
# Simple tax treatment: 50% tax rate across the board.
tax = Tax(tax_brackets={self.initial_year: {Decimal(0): Decimal(0.5)}})
# A person who is paid $200 gross ($100 net) every 2 weeks:
timing = Timing(frequency='BW', high_precision=Decimal)
self.person1 = Person(initial_year=self.initial_year,
name="Test 1",
birth_date="1 January 1980",
retirement_date="31 December 2045",
gross_income=Decimal(5200),
tax_treatment=tax,
payment_timing=timing,
high_precision=Decimal)
# A person who is paid $100 gross ($50 net) every 2 weeks:
self.person2 = Person(initial_year=self.initial_year,
name="Test 2",
birth_date="1 January 1982",
retirement_date="31 December 2047",
gross_income=Decimal(2600),
tax_treatment=tax,
payment_timing=timing,
high_precision=Decimal)
self.forecast = IncomeForecast(initial_year=self.initial_year,
people={self.person1, self.person2},
high_precision=Decimal)
def setUp(self):
""" Builds a default Person for testing of complex objects. """
# Build inputs to Person:
self.settings = Settings() # default settings object
self.initial_year = self.settings.initial_year # convenience
self.scenario = Scenario(
inflation=self.settings.inflation,
stock_return=self.settings.stock_return,
bond_return=self.settings.bond_return,
other_return=self.settings.other_return,
management_fees=self.settings.management_fees,
initial_year=self.settings.initial_year,
num_years=self.settings.num_years)
self.tax_treatment = Tax(
tax_brackets=self.settings.tax_brackets,
personal_deduction=self.settings.tax_personal_deduction,
credit_rate=self.settings.tax_credit_rate,
inflation_adjust=self.scenario.inflation_adjust)
# Build a Person object to test against later:
self.person = Person(
initial_year=self.initial_year,
name="Test 1",
birth_date="1 January 1980",
retirement_date="31 December 2040",
gross_income=10000,
raise_rate=0,
spouse=None,
tax_treatment=self.tax_treatment)
def setUp(self):
""" Builds stock variables to test with. """
self.initial_year = 2000
# Simple tax treatment: 50% tax rate across the board.
tax = Tax(tax_brackets={
self.initial_year: {0: 0.5}})
# Accounts need an owner:
timing = Timing(frequency='BW')
self.person = Person(
initial_year=self.initial_year,
name="Test",
birth_date="1 January 1980",
retirement_date="31 December 1999", # last year
gross_income=5200,
tax_treatment=tax,
payment_timing=timing)
# We want at least two accounts which are withdrawn from
# in different orders depending on the strategy.
self.account = Account(
owner=self.person,
balance=60000) # $60,000 <- BIGGER!
self.rrsp = canada.accounts.RRSP(
owner=self.person,
contribution_room=1000,
balance=6000) # $6,000
# Assume there are $2000 in inflows and $22,000 in outflows,
# for a net need of $20,000:
self.available = {
0.25: 1000,
0.5: -11000,
0.75: 1000,
1: -11000
}
# Now we can set up the big-ticket items:
self.strategy = TransactionStrategy(
strategy=TransactionStrategy.strategy_ordered,
weights={"RRSP": 1, "Account": 2})
self.forecast = WithdrawalForecast(
initial_year=self.initial_year,
people={self.person},
accounts={self.account, self.rrsp},
transaction_strategy=self.strategy)
# Set up another forecast for testing withholding behaviour:
self.withholding_account = WithholdingAccount(
owner=self.person,
balance=100000)
self.withholding_strategy = TransactionStrategy(
strategy=TransactionStrategy.strategy_ordered,
weights={"WithholdingAccount": 1})
self.withholding_forecast = WithdrawalForecast(
initial_year=self.initial_year,
people={self.person},
accounts={self.withholding_account},
transaction_strategy=self.withholding_strategy)
def setUp_decimal(self):
""" Set up stock variables based on Decimal inputs. """
# Set up inflation of various rates covering 1999-2002:
self.year_half = 1999 # -50% inflation (values halved) in this year
self.year_1 = 2000 # baseline year; no inflation
self.year_2 = 2001 # 100% inflation (values doubled) in this year
self.year_10 = 2002 # Values multiplied by 10 in this year
self.inflation_adjustment = {
self.year_half: Decimal(0.5),
self.year_1: Decimal(1),
self.year_2: Decimal(2),
self.year_10: Decimal(10)
}
# We need to provide a callable object that returns inflation
# adjustments between years. Build that here:
def variable_inflation(year, base_year=self.year_1):
""" Returns inflation-adjustment factor between two years. """
return (self.inflation_adjustment[year] /
self.inflation_adjustment[base_year])
self.variable_inflation = variable_inflation
# Build all the objects we need to build an instance of
# `LivingExpensesStrategy`:
self.initial_year = self.year_1
# Simple tax treatment: 50% tax rate across the board.
tax = Tax(tax_brackets={self.initial_year: {Decimal(0): Decimal(0.5)}})
# Set up people with $4000 gross income, $2000 net income:
biweekly_timing = Timing(frequency="BW")
self.person1 = Person(
initial_year=self.initial_year,
name="Test 1",
birth_date="1 January 1980",
retirement_date="31 December 2001", # next year
gross_income=Decimal(1000),
tax_treatment=tax,
payment_timing=biweekly_timing)
self.person2 = Person(
initial_year=self.initial_year,
name="Test 2",
birth_date="1 January 1975",
retirement_date="31 December 2001", # next year
gross_income=Decimal(3000),
tax_treatment=tax,
payment_timing=biweekly_timing)
self.people = {self.person1, self.person2}
# Give person1 a $1000 account and person2 a $9,000 account:
self.account1 = Account(owner=self.person1,
balance=Decimal(1000),
rate=0)
self.account2 = Account(owner=self.person2,
balance=Decimal(9000),
rate=0)
def test_tax_deduction(self):
""" Test Person.tax_deduction. """
initial_year = 2017
gross_income = 300
tax = Tax({initial_year: {0: 0, 200: 0.5, 1000: 0.75}},
{2017: 1, 2018: 1, 2019: 1, 2020: 1}, {2017: 0})
person = Person(
self.initial_year, 'Name', 2000,
retirement_date=self.retirement_date, gross_income=gross_income,
tax_treatment=tax)
self.assertEqual(person.tax_deduction, 0)
def test_init_type_conv_str(self):
""" Tests Tax.__init__ with args requiring type-conversion. """
# Use an all-str dict and confirm that the output is correctly
# typed
tax_brackets = {
str(year): {
str(bracket.amount): str(self.tax_brackets[year][bracket])
for bracket in self.tax_brackets[year]
}
for year in self.tax_brackets
}
inflation_adjustments = {
str(year): str(self.inflation_adjustments[year])
for year in self.inflation_adjustments
}
tax = Tax(tax_brackets, inflation_adjust=inflation_adjustments)
for year in self.tax_brackets:
self.assertEqual(tax.tax_brackets(year), self.tax_brackets[year])
self.assertTrue(
type_check(tax.tax_brackets(year), {Money: Decimal}))
self.assertTrue(callable(tax.inflation_adjust))
def setUp_decimal(self):
""" Builds stock variables to test with. """
# pylint: disable=invalid-name
# Pylint doesn't like `setUp_decimal`, but it's not our naming
# convention, so don't complain to us!
# pylint: enable=invalid-name
self.initial_year = 2000
# Simple tax treatment: 50% tax rate across the board.
tax = Tax(tax_brackets={self.initial_year: {Decimal(0): Decimal(0.5)}})
# A person who is paid $1000 gross ($500 withheld):
timing = Timing(frequency='BW', high_precision=Decimal)
self.person1 = Person(initial_year=self.initial_year,
name="Test 1",
birth_date="1 January 1980",
retirement_date="31 December 2045",
gross_income=Decimal(1000),
tax_treatment=tax,
payment_timing=timing,
high_precision=Decimal)
# A person who is paid $500 gross ($250 withheld):
self.person2 = Person(initial_year=self.initial_year,
name="Test 2",
birth_date="1 January 1982",
retirement_date="31 December 2047",
gross_income=Decimal(500),
tax_treatment=tax,
payment_timing=timing,
high_precision=Decimal)
# An account owned by person1 with $100 to withdraw
self.account1 = Account(owner=self.person1,
balance=Decimal(100),
rate=Decimal(0),
high_precision=Decimal)
# An account owned by person2 with $200 to withdraw
self.account2 = Account(owner=self.person2,
balance=Decimal(100),
rate=Decimal(0),
high_precision=Decimal)
# An account that belongs in some sense to both people
# with $50 to withdraw
self.account_joint = Account(owner=self.person1,
balance=Decimal(100),
rate=Decimal(0),
high_precision=Decimal)
self.person2.accounts.add(self.account_joint)
self.forecast = TaxForecast(initial_year=self.initial_year,
people={self.person1, self.person2},
tax_treatment=tax,
high_precision=Decimal)
def setUp_decimal(self):
""" Builds stock variables based on Decimal inputs. """
# pylint: disable=invalid-name
# Pylint doesn't like `setUp_decimal`, but it's not our naming
# convention, so don't complain to us!
# pylint: enable=invalid-name
self.initial_year = 2000
# Simple tax treatment: 50% tax rate across the board.
tax = Tax(tax_brackets={self.initial_year: {
Decimal(0): Decimal(0.5)
}},
high_precision=Decimal)
# Accounts need an owner:
timing = Timing(frequency='BW', high_precision=Decimal)
self.person = Person(initial_year=self.initial_year,
name="Test",
birth_date="1 January 1980",
retirement_date="31 December 2045",
gross_income=Decimal(5200),
tax_treatment=tax,
payment_timing=timing,
high_precision=Decimal)
# We want at least two accounts which are contributed to
# in different orders depending on the strategy.
self.account = Account(owner=self.person, high_precision=Decimal)
self.rrsp = canada.accounts.RRSP(owner=self.person,
contribution_room=Decimal(1000),
high_precision=Decimal)
# Track money available for use by the forecast:
self.available = defaultdict(lambda: Decimal(0))
for i in range(26): # biweekly inflows from employment
self.available[Decimal(0.5 + i) / 26] = Decimal(150)
for i in range(12): # monthly living expenses and reductions:
self.available[Decimal(i) / 12] -= Decimal(75)
# The result: $3000 available
self.total_available = sum(self.available.values())
# Now we can set up the big-ticket items:
# Use an ordered strategy by default:
self.strategy = TransactionTraversal([self.account, self.rrsp],
high_precision=Decimal)
self.forecast = SavingForecast(
initial_year=self.initial_year,
retirement_accounts={self.account, self.rrsp},
debt_accounts=set(),
transaction_strategy=self.strategy,
high_precision=Decimal)
def test_init_basic(self):
""" Test Tax.__init__ with only mandatory arguments. """
tax = Tax(self.tax_brackets,
inflation_adjust=self.inflation_adjustments)
for year in self.tax_brackets:
self.assertEqual(tax.tax_brackets(year), self.tax_brackets[year])
self.assertEqual(tax.accum(year), self.accum[year])
self.assertTrue(callable(tax.inflation_adjust))
self.assertEqual(tax.personal_deduction(self.initial_year), 0)
self.assertEqual(tax.credit_rate(self.initial_year), 1)
def test_init_optional(self):
""" Test Tax.__init__ with all arguments, including optional. """
tax = Tax(self.tax_brackets,
inflation_adjust=self.inflation_adjustments,
personal_deduction=self.personal_deduction,
credit_rate=self.credit_rate)
for year in self.tax_brackets:
self.assertEqual(tax.tax_brackets(year), self.tax_brackets[year])
self.assertEqual(tax.accum(year), self.accum[year])
self.assertEqual(tax.personal_deduction(year),
self.personal_deduction[year])
self.assertEqual(tax.credit_rate(year), self.credit_rate[year])
self.assertTrue(callable(tax.inflation_adjust))
def setUp_decimal(self):
""" Builds stock variables to test with. """
# pylint: disable=invalid-name
# Pylint doesn't like `setUp_decimal`, but it's not our naming
# convention, so don't complain to us!
# pylint: enable=invalid-name
self.initial_year = 2000
# Simple tax treatment: 50% tax rate across the board.
tax = Tax(tax_brackets={self.initial_year: {Decimal(0): Decimal(0.5)}})
# A person who is paid $200 gross ($100 net) every 2 weeks:
timing = Timing(frequency='BW', high_precision=Decimal)
self.person1 = Person(initial_year=self.initial_year,
name="Test 1",
birth_date="1 January 1980",
retirement_date="31 December 2045",
gross_income=Decimal(5200),
tax_treatment=tax,
payment_timing=timing)
# A person who is paid $100 gross ($50 net) every 2 weeks:
self.person2 = Person(initial_year=self.initial_year,
name="Test 2",
birth_date="1 January 1982",
retirement_date="31 December 2047",
gross_income=Decimal(2600),
tax_treatment=tax,
payment_timing=timing)
# Track inflows from employment:
self.available = {
Decimal(0.5 + i) / 26: Decimal(150)
for i in range(26)
}
self.total_available = sum(self.available.values())
# Contribute 50% of net income (i.e. $3900):
self.strategy = LivingExpensesStrategy(
strategy=LivingExpensesStrategy.strategy_gross_percent,
rate=Decimal(0.5))
self.forecast = LivingExpensesForecast(
initial_year=self.initial_year,
people={self.person1, self.person2},
living_expenses_strategy=self.strategy)
def setUp_decimal(self):
""" Sets up default vaules using Decimal inputs """
self.initial_year = 2020
self.name = "Testy McTesterson"
self.birth_date = datetime(2000, 2, 1) # 1 February 2000
self.retirement_date = datetime(2065, 6, 26) # 26 June 2065
self.gross_income = Decimal(100000) # $100000
self.raise_rate = Decimal(1) # 100%
self.tax_treatment = Tax(
{self.initial_year: {
Decimal(0): Decimal('0.1'),
Decimal(1000): Decimal('0.2'),
Decimal(100000): Decimal('0.3')}
},
inflation_adjust={
year: Decimal(1 + (year - self.initial_year) / 16)
for year in range(self.initial_year, self.initial_year + 100)
},
personal_deduction={self.initial_year: Decimal(100)},
credit_rate={self.initial_year: Decimal('0.15')})
self.spouse = Person(
initial_year=self.initial_year,
name="Spouse",
birth_date=1998,
retirement_date=2063,
gross_income=Decimal(50000),
raise_rate=self.raise_rate,
spouse=None,
tax_treatment=self.tax_treatment)
self.owner = Person(
initial_year=self.initial_year,
name=self.name,
birth_date=self.birth_date,
retirement_date=self.retirement_date,
gross_income=self.gross_income,
raise_rate=self.raise_rate,
spouse=self.spouse,
tax_treatment=self.tax_treatment)
def setUp(self):
""" Sets up default vaules for testing """
self.initial_year = 2020
self.name = "Testy McTesterson"
self.birth_date = datetime(2000, 2, 1) # 1 February 2000
self.retirement_date = datetime(2065, 6, 26) # 26 June 2065
self.gross_income = 100000 # $100000
self.raise_rate = 1 # 100%
self.tax_treatment = Tax(
{self.initial_year: {
0: 0.1,
1000: 0.2,
100000: 0.3}
},
inflation_adjust={
year: 1 + (year - self.initial_year / 16)
for year in range(self.initial_year, self.initial_year + 100)
},
personal_deduction={self.initial_year: 100},
credit_rate={self.initial_year: 0.15})
self.spouse = Person(
initial_year=self.initial_year,
name="Spouse",
birth_date=1998,
retirement_date=2063,
gross_income=50000,
raise_rate=self.raise_rate,
spouse=None,
tax_treatment=self.tax_treatment)
self.owner = Person(
initial_year=self.initial_year,
name=self.name,
birth_date=self.birth_date,
retirement_date=self.retirement_date,
gross_income=self.gross_income,
raise_rate=self.raise_rate,
spouse=self.spouse,
tax_treatment=self.tax_treatment)
def test_tax_withheld(self):
""" Test Person.tax_withheld. """
initial_year = 2017
gross_income = 300
tax = Tax({initial_year: {
0: 0,
200: 0.5,
1000: 0.75
}},
inflation_adjust={
2017: 1,
2018: 1,
2019: 1,
2020: 1
},
personal_deduction={2017: 0})
person = Person(self.initial_year,
'Name',
2000,
retirement_date=self.retirement_date,
gross_income=gross_income,
tax_treatment=tax)
self.assertEqual(person.tax_withheld, Money(50))
def setUp(self):
""" Builds stock variables to test with. """
self.initial_year = 2000
# Simple tax treatment: 50% tax rate across the board.
tax = Tax(tax_brackets={self.initial_year: {0: 0.5}})
# Accounts need an owner:
timing = Timing(frequency='BW')
self.person = Person(initial_year=self.initial_year,
name="Test",
birth_date="1 January 1980",
retirement_date="31 December 2045",
gross_income=5200,
tax_treatment=tax,
payment_timing=timing)
# We want at least two accounts which are contributed to
# in different orders depending on the strategy.
self.account = Account(owner=self.person)
self.rrsp = canada.accounts.RRSP(owner=self.person,
contribution_room=1000)
# Track money available for use by the forecast:
self.available = defaultdict(lambda: 0)
for i in range(26): # biweekly inflows from employment
self.available[(0.5 + i) / 26] = 150
for i in range(12): # monthly living expenses and reductions:
self.available[i / 12] -= 75
# The result: $3000 available
self.total_available = sum(self.available.values())
# Now we can set up the big-ticket items:
# Use an ordered strategy by default:
self.strategy = TransactionTraversal([self.account, self.rrsp])
self.forecast = SavingForecast(
initial_year=self.initial_year,
retirement_accounts={self.account, self.rrsp},
debt_accounts=set(),
transaction_strategy=self.strategy)
def test_decimal(self):
""" Test compatibility with Decimal inputs. """
# Convert values to Decimal-based
self.setUp_decimal()
# The test itself is based on test_next
initial_year = 2017
gross_income = 100
tax = Tax(
{initial_year: {
Decimal(0): Decimal(0),
Decimal(200): Decimal(0.5),
Decimal(1000): Decimal(0.75)}},
inflation_adjust={
2017: Decimal(1),
2018: Decimal(1),
2019: Decimal(1),
2020: Decimal(1)},
personal_deduction={2017: Decimal(0)})
person = Person(
initial_year, 'Name', 2000,
raise_rate=Decimal(2.0),
retirement_date=self.retirement_date,
gross_income=gross_income,
tax_treatment=tax)
# In the first year: $100 gross income, $100 taxable income,
# $100 net income.
self.assertEqual(person.gross_income, gross_income)
self.assertEqual(person.net_income, Decimal(100))
self.assertEqual(person.this_year, initial_year)
self.assertEqual(person.taxable_income, Decimal(100))
person.next_year() # 200% raise
# In the second year: $300 gross income, $300 taxable income,
# $250 net income (as income over $200 is taxed at 50%)
self.assertEqual(person.gross_income, Decimal(300))
self.assertEqual(person.net_income, Decimal(250))
self.assertEqual(person.this_year, initial_year + 1)
self.assertEqual(person.taxable_income, Decimal(300))
def setUp(self):
""" Builds stock variables to test with. """
self.initial_year = 2000
# Simple tax treatment: 50% tax rate across the board.
tax = Tax(tax_brackets={self.initial_year: {Money(0): Decimal(0.5)}})
# A person who is paid $200 gross ($100 net) every 2 weeks:
timing = Timing(frequency='BW')
self.person1 = Person(initial_year=self.initial_year,
name="Test 1",
birth_date="1 January 1980",
retirement_date="31 December 2045",
gross_income=Money(5200),
tax_treatment=tax,
payment_timing=timing)
# A person who is paid $100 gross ($50 net) every 2 weeks:
self.person2 = Person(initial_year=self.initial_year,
name="Test 2",
birth_date="1 January 1982",
retirement_date="31 December 2047",
gross_income=Money(2600),
tax_treatment=tax,
payment_timing=timing)
self.forecast = IncomeForecast(initial_year=self.initial_year,
people={self.person1, self.person2})
def setUp(self):
""" Builds stock variables to test with. """
self.initial_year = 2000
# We will occasionally need to swap out subforecasts when
# we want them to have no effect (e.g. no withdrawals because
# we're not yet retired). Use null_forecast for that:
self.null_forecast = DummyForecast(self.initial_year)
# Paid $100 at the start of each month
self.income_forecast_dummy = DummyForecast(
self.initial_year, {when / 12: 100
for when in range(12)})
self.income_forecast_dummy.people = None
# Spend $70 on living expenses at the start of each month
self.living_expenses_forecast_dummy = DummyForecast(
self.initial_year, {when / 12: -70
for when in range(12)})
# Contribute the balance ($30/mo, $360/yr):
self.saving_forecast_dummy = DummyForecast(
self.initial_year, {when + 1 / 12: -30
for when in range(12)})
# Withdraw $300 at the start and middle of the year:
self.withdrawal_forecast_dummy = DummyForecast(self.initial_year, {
0: 300,
0.5: 300
})
# Refund for $100 next year:
self.tax_forecast_dummy = DummyForecast(self.initial_year)
self.tax_forecast_dummy.tax_adjustment = 100
self.tax_forecast_dummy.tax_refund_timing = Timing('start')
# Also build a real ContributionForecast so that we can
# test cash flows into accounts according to the overall
# Forecast:
# Simple tax rate: 50% on all income:
tax = Tax(tax_brackets={self.initial_year: {0: 0.5}})
# One person, to own the account:
timing = Timing(frequency='BW')
self.person = Person(initial_year=self.initial_year,
name="Test",
birth_date="1 January 1980",
retirement_date="31 December 2045",
gross_income=5200,
tax_treatment=tax,
payment_timing=timing)
# An account for savings to go to:
self.account = Account(owner=self.person)
# A strategy is required, but since there's only
# one account the result will always be the same:
self.strategy = TransactionTraversal(priority=[self.account])
self.saving_forecast = SavingForecast(
initial_year=self.initial_year,
retirement_accounts={self.account},
debt_accounts=set(),
transaction_strategy=self.strategy)
# Now assign `people`, `accounts`, and `debts` attrs to
# appropriate subforecasts so that Forecast can retrieve
# them:
self.income_forecast_dummy.people = {self.person}
self.saving_forecast_dummy.debt_accounts = set()
self.withdrawal_forecast_dummy.accounts = {self.account}
# Also add these to the null forecast, since it could be
# substituted for any of the above dummy forecasts:
self.null_forecast.people = self.income_forecast_dummy.people
self.null_forecast.accounts = self.withdrawal_forecast_dummy.accounts
self.null_forecast.debt_accounts = (
self.saving_forecast_dummy.debt_accounts)
# Forecast depends on SubForecasts having certain properties,
# so add those here:
self.income_forecast_dummy.net_income = (sum(
self.income_forecast_dummy.transactions.values()))
self.living_expenses_forecast_dummy.living_expenses = (sum(
self.living_expenses_forecast_dummy.transactions.values()))
self.withdrawal_forecast_dummy.gross_withdrawals = (sum(
self.withdrawal_forecast_dummy.transactions.values()))
self.tax_forecast_dummy.tax_owing = 600
# Add the same properties to the null forecast, since it
# could be substituted for any of the above:
self.null_forecast.net_income = self.income_forecast_dummy.net_income
self.null_forecast.living_expenses = (
self.living_expenses_forecast_dummy.living_expenses)
self.null_forecast.gross_withdrawals = (
self.withdrawal_forecast_dummy.gross_withdrawals)
self.null_forecast.tax_owing = self.tax_forecast_dummy.tax_owing
# Finally, we need a Scenario to build a Forecast.
# This is the simplest possible: 1 year, no growth.
self.scenario = Scenario(self.initial_year, num_years=1)
def setUp_decimal(self):
""" Builds default strategies/persons/etc. with Decimal inputs. """
# pylint: disable=invalid-name
# This name is based on `setUp`, which doesn't follow Pylint's rules
# pylint: enable=invalid-name
# Use a default settings object:
# (This is conditional so that subclasses can assign their own
# settings object before calling super().setUp())
if not hasattr(self, 'settings'):
self.settings = Settings()
# To simplify tests, modify Settings so that forecasts are
# just 2 years with easy-to-predict contributions ($1000/yr)
self.settings.num_years = 2
self.settings.living_expenses_strategy = (
LivingExpensesStrategy.strategy_const_contribution)
self.settings.living_expenses_base_amount = Decimal(1000)
# Allow subclasses to use subclasses of Forecaster by assigning
# to forecaster_type
if not hasattr(self, 'forecaster_type'):
self.forecaster_type = Forecaster
# Build default `SubForecast` inputs based on `settings`:
self.initial_year = self.settings.initial_year
self.scenario = Scenario(
inflation=Decimal(self.settings.inflation),
stock_return=Decimal(self.settings.stock_return),
bond_return=Decimal(self.settings.bond_return),
other_return=Decimal(self.settings.other_return),
management_fees=Decimal(self.settings.management_fees),
initial_year=self.settings.initial_year,
num_years=self.settings.num_years)
self.living_expenses_strategy = LivingExpensesStrategy(
strategy=self.settings.living_expenses_strategy,
base_amount=Decimal(self.settings.living_expenses_base_amount),
rate=Decimal(self.settings.living_expenses_rate),
inflation_adjust=self.scenario.inflation_adjust)
self.saving_strategy = TransactionStrategy(
strategy=self.settings.saving_strategy,
weights={
year: Decimal(val)
for (year, val) in self.settings.saving_weights.items()
})
self.withdrawal_strategy = TransactionStrategy(
strategy=self.settings.withdrawal_strategy,
weights={
year: Decimal(val)
for (year, val) in self.settings.withdrawal_weights.items()
})
self.allocation_strategy = AllocationStrategy(
strategy=self.settings.allocation_strategy,
min_equity=Decimal(self.settings.allocation_min_equity),
max_equity=Decimal(self.settings.allocation_max_equity),
target=Decimal(self.settings.allocation_target),
standard_retirement_age=(
self.settings.allocation_std_retirement_age),
risk_transition_period=self.settings.allocation_risk_trans_period,
adjust_for_retirement_plan=(
self.settings.allocation_adjust_retirement))
self.debt_payment_strategy = DebtPaymentStrategy(
strategy=self.settings.debt_payment_strategy,
high_precision=Decimal)
self.tax_treatment = Tax(
tax_brackets={
year: {
Decimal(lower): Decimal(upper)
}
for (year, vals) in self.settings.tax_brackets.items()
for (lower, upper) in vals.items()
},
personal_deduction={
year: Decimal(val)
for (year,
val) in self.settings.tax_personal_deduction.items()
},
credit_rate={
year: Decimal(val)
for (year, val) in self.settings.tax_credit_rate.items()
},
inflation_adjust=self.scenario.inflation_adjust,
high_precision=Decimal)
# Now build some Ledger objects to test against:
# A person making $10,000/yr
self.person = Person(initial_year=self.initial_year,
name="Test 1",
birth_date="1 January 1980",
retirement_date="31 December 2040",
gross_income=Decimal(10000),
raise_rate=Decimal(0),
spouse=None,
tax_treatment=self.tax_treatment,
high_precision=Decimal)
# An account with $1000 in it (and no interest)
self.account = Account(owner=self.person,
balance=Decimal(1000),
high_precision=Decimal)
# A debt with a $100 balance (and no interest)
self.debt = Debt(owner=self.person,
balance=Decimal(100),
high_precision=Decimal)
# Init a Forecaster object here for convenience:
self.forecaster = self.forecaster_type(settings=self.settings,
high_precision=Decimal)
def setUp(self):
self.initial_year = 2000
# Build 100 years of inflation adjustments with steadily growing
# adjustment factors. First, pick a nice number (ideally a power
# of 2 to avoid float precision issues); inflation_adjustment
# will grow by adding the inverse (1/n) of this number annually
growth_factor = 32
year_range = range(self.initial_year, self.initial_year + 100)
self.inflation_adjustments = {
year: 1 + (year - self.initial_year) / growth_factor
for year in year_range
}
# For convenience, store the year where inflation has doubled
# the nominal value of money
self.double_year = self.initial_year + growth_factor
# Build some brackets with nice round numbers:
self.tax_brackets = {self.initial_year: {0: 0.1, 100: 0.2, 10000: 0.3}}
# For convenience, build a sorted, type-converted array of
# each of the tax bracket thresholds:
self.brackets = sorted({
key: self.tax_brackets[self.initial_year][key]
for key in self.tax_brackets[self.initial_year].keys()
})
# For convenience in testing, build an accum dict that
# corresponds to the tax brackets above.
self.accum = {self.initial_year: {0: 0, 100: 10, 10000: 1990}}
self.personal_deduction = {self.initial_year: 100}
self.credit_rate = {self.initial_year: 0.1}
self.tax = Tax(self.tax_brackets,
inflation_adjust=self.inflation_adjustments,
personal_deduction=self.personal_deduction,
credit_rate=self.credit_rate)
# Set up a simple person with no account-derived taxable income
self.person = Person(self.initial_year,
"Tester",
self.initial_year - 25,
retirement_date=self.initial_year + 40,
gross_income=0)
# Set up two people, spouses, on which to do more complex tests
self.person1 = Person(self.initial_year,
"Tester 1",
self.initial_year - 20,
retirement_date=self.initial_year + 45,
gross_income=100000)
self.person2 = Person(self.initial_year,
"Tester 2",
self.initial_year - 22,
retirement_date=self.initial_year + 43,
gross_income=50000)
# Give the first person two accounts, one taxable and one
# tax-deferred. Withdraw the entirety from the taxable account,
# so that we don't need to worry about tax on unrealized growth:
self.taxable_account1 = TaxableAccount(owner=self.person1,
acb=0,
balance=50000,
rate=0.05,
nper=1)
self.taxable_account1.add_transaction(-50000, when='start')
self.rrsp = RRSP(owner=self.person1,
inflation_adjust=self.inflation_adjustments,
contribution_room=0,
balance=10000,
rate=0.05,
nper=1)
# Employment income is fully taxable, and only half of capital
# gains (the income from the taxable account) is taxable:
self.person1_taxable_income = (self.person1.gross_income +
self.taxable_account1.balance / 2)
# Give the second person two accounts, one taxable and one
# non-taxable. Withdraw the entirety from the taxable account,
# so that we don't need to worry about tax on unrealized growth,
# and withdraw a bit from the non-taxable account (which should
# have no effect on taxable income):
self.taxable_account2 = TaxableAccount(owner=self.person2,
acb=0,
balance=20000,
rate=0.05,
nper=1)
self.taxable_account2.add_transaction(-20000, when='start')
self.tfsa = TFSA(owner=self.person2, balance=50000, rate=0.05, nper=1)
self.tfsa.add_transaction(-20000, when='start')
# Employment income is fully taxable, and only half of capital
# gains (the income from the taxable account) is taxable:
self.person2_taxable_income = (self.person2.gross_income +
self.taxable_account2.balance / 2)
def setUp_decimal(self):
""" Builds stock variables to test with. """
# pylint: disable=invalid-name
# Pylint doesn't like `setUp_decimal`, but it's not our naming
# convention, so don't complain to us!
# pylint: enable=invalid-name
self.initial_year = 2000
# Simple tax treatment: 50% tax rate across the board.
tax = Tax(tax_brackets={
self.initial_year: {Decimal(0): Decimal(0.5)}},
high_precision=Decimal)
# Accounts need an owner:
timing = Timing(frequency='BW',high_precision=Decimal)
self.person = Person(
initial_year=self.initial_year,
name="Test",
birth_date="1 January 1980",
retirement_date="31 December 1999", # last year
gross_income=Decimal(5200),
tax_treatment=tax,
payment_timing=timing,
high_precision=Decimal)
# We want at least two accounts which are withdrawn from
# in different orders depending on the strategy.
self.account = Account(
owner=self.person,
balance=Decimal(60000), # $60,000 <- BIGGER!
high_precision=Decimal)
self.rrsp = canada.accounts.RRSP(
owner=self.person,
contribution_room=Decimal(1000),
balance=Decimal(6000), # $6,000
high_precision=Decimal)
# Assume there are $2000 in inflows and $22,000 in outflows,
# for a net need of $20,000:
self.available = {
Decimal(0.25): Decimal(1000),
Decimal(0.5): Decimal(-11000),
Decimal(0.75): Decimal(1000),
Decimal(1): Decimal(-11000)
}
# Now we can set up the big-ticket items:
self.strategy = TransactionStrategy(
strategy=TransactionStrategy.strategy_ordered,
weights={"RRSP": Decimal(1), "Account": Decimal(2)})
self.forecast = WithdrawalForecast(
initial_year=self.initial_year,
people={self.person},
accounts={self.account, self.rrsp},
transaction_strategy=self.strategy,
high_precision=Decimal)
# Set up another forecast for testing withholding behaviour:
self.withholding_account = WithholdingAccount(
owner=self.person,
balance=Decimal(100000),
high_precision=Decimal)
self.withholding_strategy = TransactionStrategy(
strategy=TransactionStrategy.strategy_ordered,
weights={"WithholdingAccount": Decimal(1)},
high_precision=Decimal)
self.withholding_forecast = WithdrawalForecast(
initial_year=self.initial_year,
people={self.person},
accounts={self.withholding_account},
transaction_strategy=self.withholding_strategy,
high_precision=Decimal)
def setUp(self):
""" Builds default strategies, persons, etc. """
# Use a default settings object:
# (This is conditional so that subclasses can assign their own
# settings object before calling super().setUp())
if not hasattr(self, 'settings'):
self.settings = Settings()
# To simplify tests, modify Settings so that forecasts are
# just 2 years with easy-to-predict contributions ($1000/yr)
self.settings.num_years = 2
self.settings.living_expenses_strategy = (
LivingExpensesStrategy.strategy_const_contribution)
self.settings.living_expenses_base_amount = 1000
# Allow subclasses to use subclasses of Forecaster by assigning
# to forecaster_type
if not hasattr(self, 'forecaster_type'):
self.forecaster_type = Forecaster
# Build default `SubForecast` inputs based on `settings`:
self.initial_year = self.settings.initial_year
self.scenario = Scenario(inflation=self.settings.inflation,
stock_return=self.settings.stock_return,
bond_return=self.settings.bond_return,
other_return=self.settings.other_return,
management_fees=self.settings.management_fees,
initial_year=self.settings.initial_year,
num_years=self.settings.num_years)
self.living_expenses_strategy = LivingExpensesStrategy(
strategy=self.settings.living_expenses_strategy,
base_amount=self.settings.living_expenses_base_amount,
rate=self.settings.living_expenses_rate,
inflation_adjust=self.scenario.inflation_adjust)
self.saving_strategy = TransactionStrategy(
strategy=self.settings.saving_strategy,
weights=self.settings.saving_weights)
self.withdrawal_strategy = TransactionStrategy(
strategy=self.settings.withdrawal_strategy,
weights=self.settings.withdrawal_weights)
self.allocation_strategy = AllocationStrategy(
strategy=self.settings.allocation_strategy,
min_equity=self.settings.allocation_min_equity,
max_equity=self.settings.allocation_max_equity,
target=self.settings.allocation_target,
standard_retirement_age=(
self.settings.allocation_std_retirement_age),
risk_transition_period=self.settings.allocation_risk_trans_period,
adjust_for_retirement_plan=(
self.settings.allocation_adjust_retirement))
self.debt_payment_strategy = DebtPaymentStrategy(
strategy=self.settings.debt_payment_strategy)
self.tax_treatment = Tax(
tax_brackets=self.settings.tax_brackets,
personal_deduction=self.settings.tax_personal_deduction,
credit_rate=self.settings.tax_credit_rate,
inflation_adjust=self.scenario.inflation_adjust)
# Now build some Ledger objects to test against:
# A person making $10,000/yr
self.person = Person(initial_year=self.initial_year,
name="Test 1",
birth_date="1 January 1980",
retirement_date="31 December 2040",
gross_income=10000,
raise_rate=0,
spouse=None,
tax_treatment=self.tax_treatment)
# An account with $1000 in it (and no interest)
self.account = Account(owner=self.person, balance=1000)
# A debt with a $100 balance (and no interest)
self.debt = Debt(owner=self.person, balance=100)
# Init a Forecaster object here for convenience:
self.forecaster = self.forecaster_type(settings=self.settings)
