def test_show_zero_when_value_is_none_and_show_zero_is_True(self):
amount = format_currency(None)
self.assertEqual("$0.00", amount)
def test_add_thousand_separator(self):
amount = format_currency(1000)
self.assertEqual("$1,000.00", amount)
def test_show_empty_string_when_value_is_none_and_show_zero_is_False(self):
amount = format_currency(None, show_zero=False)
self.assertEqual("", amount)
def test_allow_decimal_precision_to_be_specified(self):
amount = format_currency(123.123456, 4)
self.assertEqual("$123.1235", amount)
def test_show_default_formatted_dollar_amount_when_amount_is_not_zero(self):
amount = format_currency(123)
self.assertEqual("$123.00", amount)
def test_show_formatted_zero_amount(self):
amount = format_currency(0)
self.assertEqual("$0.00", amount)
def test_show_empty_string_when_amount_is_zero_if_show_zero_is_false(self):
amount = format_currency(0, show_zero=False)
self.assertEqual("", amount)
def format_currency(value, places=2, show_zero="True"):
"""
Displays value as US currency: $1,500.00
"""
show_zero = True if show_zero == "True" else False
return formatting.format_currency(value, places, show_zero)
