def test_mult_de_somme():
banque = monnaie.Banque()
expression = (monnaie.franc(2) + monnaie.dollar(1)) * 4
assert monnaie.franc(10) == banque.conversion(expression, "CHF")
def test_somme_conversion_deux_monnaies():
assert monnaie.franc(2) == monnaie.Banque().conversion(
monnaie.dollar(2) + monnaie.franc(1), "CHF")
def test_somme_de_somme_2():
banque = monnaie.Banque()
expression = (monnaie.dollar(1) + monnaie.franc(2)) + monnaie.dollar(1)
assert monnaie.franc(3) == banque.conversion(expression, "CHF")
def test_banque_change_CHF_dollar():
assert 2 == monnaie.Banque().change("CHF", "USD")
assert 0.5 == approx(monnaie.Banque().change("USD", "CHF"))
def test_banque_change_identique():
assert 1 == monnaie.Banque().change("USD", "USD")
def test_banque_conversion_monnaie_differente():
banque = monnaie.Banque()
assert monnaie.franc(1) == banque.conversion(monnaie.dollar(2), "CHF")
def test_banque_conversion_monnaie_identique():
banque = monnaie.Banque()
assert monnaie.dollar(1) == banque.conversion(monnaie.dollar(1), "USD")
def test_conversion_addition():
somme = monnaie.dollar(5) + monnaie.dollar(2)
banque = monnaie.Banque()
conversion = banque.conversion(somme, "USD")
assert monnaie.dollar(7) == conversion