99 lines
2.2 KiB
Python
99 lines
2.2 KiB
Python
|
"""Tests for ledgerly.money (R3, Money value semantics)."""
|
||
|
|
|
||
|
|
import pytest
|
||
|
|
|
||
|
|
from ledgerly.money import InvalidMoney, Money
|
||
|
|
|
||
|
|
|
||
|
|
def test_parse_integer_string():
|
||
|
|
assert Money.parse("42") == Money(4200)
|
||
|
|
|
||
|
|
|
||
|
|
def test_parse_two_decimals():
|
||
|
|
assert Money.parse("12.34") == Money(1234)
|
||
|
|
|
||
|
|
|
||
|
|
def test_parse_rounds_half_up():
|
||
|
|
assert Money.parse("12.345") == Money(1235)
|
||
|
|
assert Money.parse("12.344") == Money(1234)
|
||
|
|
|
||
|
|
|
||
|
|
def test_parse_negative():
|
||
|
|
assert Money.parse("-1.50") == Money(-150)
|
||
|
|
|
||
|
|
|
||
|
|
def test_parse_accepts_numbers():
|
||
|
|
assert Money.parse(3) == Money(300)
|
||
|
|
assert Money.parse(2.5) == Money(250)
|
||
|
|
|
||
|
|
|
||
|
|
def test_parse_rejects_garbage():
|
||
|
|
for bad in ("abc", "", None):
|
||
|
|
with pytest.raises(InvalidMoney):
|
||
|
|
Money.parse(bad)
|
||
|
|
|
||
|
|
|
||
|
|
def test_parse_rejects_non_finite():
|
||
|
|
for bad in ("inf", "-inf", "nan"):
|
||
|
|
with pytest.raises(InvalidMoney):
|
||
|
|
Money.parse(bad)
|
||
|
|
|
||
|
|
|
||
|
|
def test_cents_must_be_int():
|
||
|
|
for bad in ("5", 1.5, True):
|
||
|
|
with pytest.raises(TypeError):
|
||
|
|
Money(bad)
|
||
|
|
|
||
|
|
|
||
|
|
def test_predicates():
|
||
|
|
assert Money(0).is_zero
|
||
|
|
assert not Money(1).is_zero
|
||
|
|
assert Money(1).is_positive
|
||
|
|
assert not Money(0).is_positive
|
||
|
|
assert not Money(-1).is_positive
|
||
|
|
|
||
|
|
|
||
|
|
def test_zero_classmethod():
|
||
|
|
assert Money.zero() == Money(0)
|
||
|
|
|
||
|
|
|
||
|
|
def test_arithmetic():
|
||
|
|
a, b = Money(100), Money(25)
|
||
|
|
assert a + b == Money(125)
|
||
|
|
assert a - b == Money(75)
|
||
|
|
assert Money(10) - Money(20) == Money(-10)
|
||
|
|
|
||
|
|
|
||
|
|
def test_arithmetic_type_errors():
|
||
|
|
with pytest.raises(TypeError):
|
||
|
|
Money(1) + 1
|
||
|
|
with pytest.raises(TypeError):
|
||
|
|
Money(1) - "1"
|
||
|
|
|
||
|
|
|
||
|
|
def test_ordering_and_hash():
|
||
|
|
assert Money(1) < Money(2)
|
||
|
|
assert Money(2) <= Money(2)
|
||
|
|
assert Money(2) == Money(2)
|
||
|
|
assert hash(Money(2)) == hash(Money(2))
|
||
|
|
|
||
|
|
|
||
|
|
def test_not_equal_to_other_types():
|
||
|
|
assert Money(1) != 1
|
||
|
|
assert Money(1) != "1"
|
||
|
|
|
||
|
|
|
||
|
|
def test_str_formatting():
|
||
|
|
assert str(Money(0)) == "$0.00"
|
||
|
|
assert str(Money(123456)) == "$1,234.56"
|
||
|
|
assert str(Money(-100)) == "-$1.00"
|
||
|
|
|
||
|
|
|
||
|
|
def test_format_supports_alignment():
|
||
|
|
assert format(Money(150000), "<12") == "$1,500.00 "
|
||
|
|
assert format(Money(150000), "") == "$1,500.00"
|
||
|
|
|
||
|
|
|
||
|
|
def test_repr():
|
||
|
|
assert repr(Money(42)) == "Money(42)"
|