Jmaa/fin-defs
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Jon Michael Aanes 2024-10-27 17:24:26 +01:00
parent b995d3ebe1
commit 6856343f4c
Signed by: Jmaa
SSH Key Fingerprint: SHA256:Ab0GfHGCblESJx7JRE4fj4bFy/KRpeLhi41y4pF3sNA
6 changed files with 64 additions and 26 deletions
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3
fin_defs/__init__.py
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@ -184,7 +184,7 @@ class Asset:
if m := re.match(r'^(\w+)(?:\.(\w+))?$', ticker):
exchange = EXCHANGES_BY_IDS[m.group(2) or 'NYSE'] # TODO?
return Stock(m.group(1), exchange, **attrs)
if prefix in {'currency','fiat'}:
if prefix in {'currency', 'fiat'}:
return FiatCurrency(ticker, **attrs)
if prefix == 'index':
return Index(ticker, **attrs)
@ -211,6 +211,7 @@ class UnknownAsset(Asset):
def raw_short_name(self) -> str:
return '???'
@enforce_typing.enforce_types
@dataclasses.dataclass(frozen=True)
class Currency(Asset):

42
test/test_asset_amount.py
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@ -1,7 +1,7 @@
import pytest
from decimal import Decimal
import pytest
import fin_defs
USD_0 = fin_defs.AssetAmount(fin_defs.USD, Decimal(0))
@ -13,80 +13,106 @@ USD_21 = fin_defs.AssetAmount(fin_defs.USD, Decimal(21))
DKK_0 = fin_defs.AssetAmount(fin_defs.DKK, Decimal(0))
DKK_21 = fin_defs.AssetAmount(fin_defs.DKK, Decimal(21))
def test_add_asset():
assert USD_10 + USD_11 == USD_21
assert USD_10 + USD_0 == USD_10
assert DKK_0 + USD_10 == USD_10
def test_sub_asset():
assert USD_21 - USD_10 == USD_11
assert USD_10 - USD_0 == USD_10
assert DKK_0 - USD_10 == -USD_10
def test_div_asset():
assert USD_20 / USD_10 == 2
assert USD_10 / USD_10 == 1
assert USD_10 / USD_20 == 0.5
def test_div_amount():
assert USD_20 / Decimal(2) == USD_10
def test_mult():
assert USD_10 * Decimal(2) == USD_20
def test_negate():
assert USD_20 + (-USD_10) == USD_10
def test_compare():
assert USD_10 < USD_20
assert USD_10 <= USD_20
assert not (USD_10 > USD_20)
assert not (USD_10 >= USD_20)
def test_compare_zero():
assert DKK_0 < USD_20
assert DKK_0 <= USD_20
assert not (DKK_0 > USD_20)
assert not (DKK_0 >= USD_20)
def test_is_zero():
assert USD_0.is_zero()
assert not USD_10.is_zero()
def test_str():
assert str(USD_0) == '$0.000 USD'
assert str(USD_10) == '$10.00 USD'
assert str(USD_11) == '$11.00 USD'
assert str(-USD_10) == '-$10.00 USD'
def test_mul_wrong():
with pytest.raises(TypeError, match='other must be Decimal, but was AssetAmount'):
assert USD_20 * USD_10
def test_add_wrong_type():
with pytest.raises(TypeError, match='other must be AssetAmount, but was Decimal'):
assert USD_20 + Decimal(1)
def test_add_wrong_asset():
with pytest.raises(ValueError, match='AssetAmount must have same asset, but: fiat:USD != fiat:DKK'):
with pytest.raises(
ValueError, match='AssetAmount must have same asset, but: fiat:USD != fiat:DKK',
):
assert USD_20 + DKK_21
def test_sub_wrong_type():
with pytest.raises(TypeError, match='other must be AssetAmount, but was Decimal'):
assert USD_20 - Decimal(1)
def test_sub_wrong_asset():
with pytest.raises(ValueError, match='AssetAmount must have same asset, but: fiat:USD != fiat:DKK'):
with pytest.raises(
ValueError, match='AssetAmount must have same asset, but: fiat:USD != fiat:DKK',
):
assert USD_20 - DKK_21
def test_cmp_wrong_type():
with pytest.raises(TypeError, match='other must be AssetAmount, but was Decimal'):
assert USD_20 < Decimal(1)
assert Decimal(1) > USD_20
def test_cmp_wrong_asset():
with pytest.raises(ValueError, match='AssetAmount must have same asset, but: fiat:USD != fiat:DKK'):
with pytest.raises(
ValueError, match='AssetAmount must have same asset, but: fiat:USD != fiat:DKK',
):
assert USD_20 < DKK_21
def test_div_wrong_asset ():
with pytest.raises(ValueError, match='AssetAmount must have same asset, but: fiat:USD != fiat:DKK'):
def test_div_wrong_asset():
with pytest.raises(
ValueError, match='AssetAmount must have same asset, but: fiat:USD != fiat:DKK',
):
assert USD_21 / DKK_21

4
test/test_currency.py
View File

@ -1,11 +1,11 @@
import pytest
import fin_defs
def test_from_currency_symbol():
assert fin_defs.FiatCurrency.from_currency_symbol('$') == fin_defs.USD
assert fin_defs.FiatCurrency.from_currency_symbol('TEST') is None
def test_currency_symbol():
assert fin_defs.USD.to_currency_symbol() == '$'

1
test/test_data.py
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@ -13,7 +13,6 @@ def test_valid_tickers(ticker: str):
assert asset.to_polygon_id() is not None
@pytest.mark.parametrize('ticker', BAD_STOCK_TICKERS)
def test_bad_tickers(ticker: str):
with pytest.raises(ValueError, match='ticker was not in correct format:.*'):

20
test/test_exchange_rate_sample.py
View File

@ -1,19 +1,23 @@
import pytest
import datetime
from decimal import Decimal
import fin_defs
NOW = datetime.datetime.now()
THEN = NOW - datetime.timedelta(days=1)
SAMPLE_AVERAGE = fin_defs.ExchangeRateSample(NOW,
(fin_defs.FiatCurrency.DKK,fin_defs.FiatCurrency.USD),
_average = Decimal(1))
SAMPLE_AVERAGE = fin_defs.ExchangeRateSample(
NOW, (fin_defs.FiatCurrency.DKK, fin_defs.FiatCurrency.USD), _average=Decimal(1),
)
SAMPLE_HIGH_LOW = fin_defs.ExchangeRateSample(
NOW,
(fin_defs.FiatCurrency.DKK, fin_defs.FiatCurrency.USD),
high=Decimal(1),
low=Decimal('0.5'),
)
SAMPLE_HIGH_LOW = fin_defs.ExchangeRateSample(NOW,
(fin_defs.FiatCurrency.DKK,fin_defs.FiatCurrency.USD),
high = Decimal(1), low=Decimal('0.5'))
def test_sample_average():
assert SAMPLE_AVERAGE.average == 1
@ -22,7 +26,7 @@ def test_sample_average():
def test_invert_sample():
inverted = SAMPLE_HIGH_LOW.invert_exchange_rate()
assert inverted.asset_pair == (fin_defs.FiatCurrency.USD,fin_defs.FiatCurrency.DKK)
assert inverted.asset_pair == (fin_defs.FiatCurrency.USD, fin_defs.FiatCurrency.DKK)
assert inverted.high == 2
assert inverted.low == 1
assert inverted.average == 1.5

18
test/test_ids.py
View File

@ -20,13 +20,18 @@ VALID_IDS = [
]
ASSETS = list(fin_defs.WELL_KNOWN_SYMBOLS.values()) + [fin_defs.Asset.from_string_id(vid) for vid in VALID_IDS]
ASSETS = list(fin_defs.WELL_KNOWN_SYMBOLS.values()) + [
fin_defs.Asset.from_string_id(vid) for vid in VALID_IDS
]
ASSETS_POLYGON_PRESERVES_FULL_ID = frozenset(a for a in ASSETS if not isinstance(a,
fin_defs.CryptoCurrency
| fin_defs.Commodity
| fin_defs.UnknownAsset)) - frozenset([NVO])
ASSETS_POLYGON_PRESERVES_FULL_ID = frozenset(
a
for a in ASSETS
if not isinstance(
a, fin_defs.CryptoCurrency | fin_defs.Commodity | fin_defs.UnknownAsset,
)
) - frozenset([NVO])
INVALID_IDS = [
'NVO',
@ -89,14 +94,17 @@ def test_to_from_polygon_id_works(asset: fin_defs.Asset):
return
assert fin_defs.Asset.from_polygon_id(asset.to_polygon_id()) is not None
@pytest.mark.parametrize('asset', ASSETS_POLYGON_PRESERVES_FULL_ID)
def test_to_from_polygon_id_preserves_id(asset: fin_defs.Asset):
assert fin_defs.Asset.from_polygon_id(asset.to_polygon_id()) == asset
def test_to_polygon_id_fail_for_commodity():
with pytest.raises(TypeError, match='Unknown type: Commodity'):
assert fin_defs.Commodity.CORN.to_polygon_id()
def test_to_string_id_wrong_type():
with pytest.raises(TypeError, match='Unsupported asset type: int'):
assert fin_defs.Asset.to_string_id(1)