def test_set_rate_after_get_the_day_after():
# When setting a rate, the cache for the whole currency is reset, or else we get old fallback
# values for dates where the currency server returned no value.
setup_daily_rate()
CAD.value_in(USD, date(2008, 4, 21)) # value will be cached
USD.set_CAD_value(1/42, date(2008, 4, 20))
assert_almost_equal(CAD.value_in(USD, date(2008, 4, 21)), 42)
def test_physical_rates_db_remember_rates(tmpdir):
# When a rates db uses a real file, rates are remembered
dbpath = str(tmpdir.join('foo.db'))
db = RatesDB(dbpath)
db.set_CAD_value(date(2008, 4, 20), 'USD', 1/0.996115)
db = RatesDB(dbpath)
assert_almost_equal(db.get_rate(date(2008, 4, 20), 'CAD', 'USD'), 0.996115)
def test_set_rate_after_get_the_day_after():
# When setting a rate, the cache for the whole currency is reset, or else we get old fallback
# values for dates where the currency server returned no value.
setup_daily_rate()
CAD.value_in(USD, date(2008, 4, 21)) # value will be cached
USD.set_CAD_value(1 / 42, date(2008, 4, 20))
assert_almost_equal(CAD.value_in(USD, date(2008, 4, 21)), 42)
def test_physical_rates_db_remember_rates(tmpdir):
# When a rates db uses a real file, rates are remembered
dbpath = str(tmpdir.join('foo.db'))
db = RatesDB(dbpath)
db.set_CAD_value(date(2008, 4, 20), 'USD', 1 / 0.996115)
db = RatesDB(dbpath)
assert_almost_equal(db.get_rate(date(2008, 4, 20), 'CAD', 'USD'), 0.996115)
def test_set_rate_twice():
# When setting a rate for an index that already exists, the old rate is replaced by the new.
setup_daily_rate()
USD.set_CAD_value(1/42, date(2008, 4, 20))
assert_almost_equal(CAD.value_in(USD, date(2008, 4, 20)), 42)
def test_get_rate_reverse():
# It's possible to get the reverse value of a rate using the same data.
setup_daily_rate()
assert_almost_equal(USD.value_in(CAD, date(2008, 4, 20)), 1 / 0.996115)
def test_get_rate_with_daily_rate():
# Getting the rate exactly as set_rate happened returns the same rate.
setup_daily_rate()
assert_almost_equal(CAD.value_in(USD, date(2008, 4, 20)), 0.996115)
def test_get_rate_with_pivotal():
# It's possible to get a rate by using 2 records.
# if 1 CAD = 0.996115 USD and 1 CAD = 0.633141 then 0.996115 USD = 0.633141 then 1 USD = 0.633141 / 0.996115 EUR
setup_rates_of_multiple_currencies()
assert_almost_equal(USD.value_in(EUR, date(2008, 4, 20)), 0.633141 / 0.996115)
def test_get_rate_multiple_currencies():
# Don't mix currency rates up.
setup_rates_of_multiple_currencies()
assert_almost_equal(CAD.value_in(USD, date(2008, 4, 20)), 0.996115)
assert_almost_equal(CAD.value_in(EUR, date(2008, 4, 20)), 0.633141)
def test_set_rate_after_get():
# When setting a rate after a get of the same rate, the rate cache is correctly updated.
setup_daily_rate()
CAD.value_in(USD, date(2008, 4, 20)) # value will be cached
USD.set_CAD_value(1/42, date(2008, 4, 20))
assert_almost_equal(CAD.value_in(USD, date(2008, 4, 20)), 42)
def test_get_rate_with_daily_rate():
# Getting the rate exactly as set_rate happened returns the same rate.
setup_daily_rate()
assert_almost_equal(CAD.value_in(USD, date(2008, 4, 20)), 0.996115)
def test_get_rate_with_pivotal():
# It's possible to get a rate by using 2 records.
# if 1 CAD = 0.996115 USD and 1 CAD = 0.633141 then 0.996115 USD = 0.633141 then 1 USD = 0.633141 / 0.996115 EUR
setup_rates_of_multiple_currencies()
assert_almost_equal(USD.value_in(EUR, date(2008, 4, 20)),
0.633141 / 0.996115)
def test_get_rate_multiple_currencies():
# Don't mix currency rates up.
setup_rates_of_multiple_currencies()
assert_almost_equal(CAD.value_in(USD, date(2008, 4, 20)), 0.996115)
assert_almost_equal(CAD.value_in(EUR, date(2008, 4, 20)), 0.633141)
def test_set_rate_after_get():
# When setting a rate after a get of the same rate, the rate cache is correctly updated.
setup_daily_rate()
CAD.value_in(USD, date(2008, 4, 20)) # value will be cached
USD.set_CAD_value(1 / 42, date(2008, 4, 20))
assert_almost_equal(CAD.value_in(USD, date(2008, 4, 20)), 42)
def test_set_rate_twice():
# When setting a rate for an index that already exists, the old rate is replaced by the new.
setup_daily_rate()
USD.set_CAD_value(1 / 42, date(2008, 4, 20))
assert_almost_equal(CAD.value_in(USD, date(2008, 4, 20)), 42)
def test_get_rate_reverse():
# It's possible to get the reverse value of a rate using the same data.
setup_daily_rate()
assert_almost_equal(USD.value_in(CAD, date(2008, 4, 20)), 1 / 0.996115)
