def test_filter_generator(self):
e = effect.filter_(
lambda v: effect.success(v % 2 == 0),
(v for v in range(5))
)
assert e.run(None) == (0, 2, 4)
assert e.run(None) == (0, 2, 4)
def test_filter_repr(self):
f = lambda _: effect.success(True)
assert repr(effect.filter_(f, [0])) == f'filter_({repr(f)})((0,))'
def test_filter(self):
assert effect.filter_(lambda v: effect.success(v % 2 == 0),
range(5)).run(None) == (0, 2, 4)