def test_conversion_failures():
class A: pass
class B: pass
a, b = A(), B()
with pytest.raises(TypeError):
convert(a, B)
with pytest.raises(TypeError):
convert(b, A)
with pytest.raises(TypeError):
get_conversion(A, B)
with pytest.raises(ValueError):
get_conversion(a, b)
def convert(self, dtype):
_float = float
if dtype is self.dtype:
return self
elif dtype is _float:
x = _float(self._x)
y = _float(self._y)
try:
return self.__float_root(x, y)
except AttributeError:
self_t = type(self)
cls = self_t.__float_root = self.__origin__[2, float]
return cls(x, y)
else:
conv = get_conversion(self.dtype, dtype)
x = conv(self._x)
y = conv(self._y)
return self.__origin__[2, dtype](x, y)
def convert(self, dtype):
_float = float
if dtype is self.dtype:
return self
elif dtype is _float:
x = _float(self._x)
y = _float(self._y)
try:
return self.__float_root(x, y)
except AttributeError:
self_t = type(self)
cls = self_t.__float_root = self.__origin__[2, float]
return cls(x, y)
else:
conv = get_conversion(self.dtype, dtype)
x = conv(self._x)
y = conv(self._y)
return self.__origin__[2, dtype](x, y)