Files @ 71893ace4dc0
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Location: NPO-Accounting/oxrlib/tests/test_FileCache.py

Brett Smith
tests: Historical tests use more flexible rate matching.

This lets the tests be more flexible about how much precision is used in
rates when appropriate, and makes them ready to parametrize for
Beancount.
import datetime
import pathlib

import pytest

from . import any_date, relpath
import oxrlib.errors
import oxrlib.loaders

CACHE_PATH = relpath('filecache')
HISTORICAL_PATTERN = '{date}_{base}_cache.json'

@pytest.fixture
def dummycache():
    cache = oxrlib.loaders.FileCache(CACHE_PATH)
    cache.setup(historical=HISTORICAL_PATTERN)
    return cache

@pytest.mark.parametrize('date,base', [
    (datetime.date(1999, 2, 1), 'USD'),
    (datetime.date(1999, 3, 1), 'EUR'),
])
def test_cache_success(dummycache, date, base):
    expect_name = CACHE_PATH / HISTORICAL_PATTERN.format(date=date.isoformat(), base=base)
    with dummycache.historical(date, base) as cache_file:
        assert pathlib.Path(cache_file.name) == expect_name

@pytest.mark.parametrize('date,base,exc_type', [
    (datetime.date(1999, 2, 1), 'EUR', oxrlib.errors.LoaderNoDataError),
    (datetime.date(1999, 3, 1), 'USD', oxrlib.errors.LoaderNoDataError),
    (datetime.date(1200, 12, 31), 'USD', oxrlib.errors.LoaderSourceError),
])
def test_cache_read_error(dummycache, date, base, exc_type):
    try:
        with dummycache.historical(date, base):
            assert False, "{e.__name__} not raised".format(e=exc_type)
    except exc_type:
        pass

def test_cache_unconfigured(any_date):
    cache = oxrlib.loaders.FileCache(CACHE_PATH)
    try:
        cache.historical(any_date, 'USD')
    except oxrlib.errors.CacheLoaderConfigurationError:
        pass
    else:
        assert False, "CacheLoaderConfigurationError not raised"