def test_tabulate_failure3():
tab = tabulate(iteration_utilities.return_identity, T(0))
# Fail once while incrementing, this will set cnt to NULL
with pytest.raises(TypeError):
next(tab)
with pytest.raises(StopIteration):
next(tab)
def test_traverse():
"""To test the traverse implementation we call gc.collect() while instances
of all the C objects are still valid."""
acc = iteration_utilities.accumulate([])
app = iteration_utilities.applyfunc(lambda x: x, 1)
cha = iteration_utilities.chained(int, float)
cla = iteration_utilities.clamp([], 0, 1)
com = iteration_utilities.complement(int)
con = iteration_utilities.constant(1)
dee = iteration_utilities.deepflatten([])
dup = iteration_utilities.duplicates([])
fli = iteration_utilities.flip(int)
gro = iteration_utilities.grouper([], 2)
ine = iteration_utilities.intersperse([], 1)
iik = iteration_utilities.ItemIdxKey(10, 2)
ite = iteration_utilities.iter_except(int, TypeError)
mer = iteration_utilities.merge([])
nth = iteration_utilities.nth(1)
pac = iteration_utilities.packed(int)
par = iteration_utilities.partial(int, 10)
rep = iteration_utilities.replicate([], 3)
rou = iteration_utilities.roundrobin([])
see = iteration_utilities.Seen()
sid = iteration_utilities.sideeffects([], lambda x: x)
spl = iteration_utilities.split([], lambda x: True)
sta = iteration_utilities.starfilter(lambda x: True, [])
suc = iteration_utilities.successive([])
tab = iteration_utilities.tabulate(int)
une = iteration_utilities.unique_everseen([])
unj = iteration_utilities.unique_justseen([])
gc.collect()
def test_tabulate_attributes1():
it = tabulate(T)
assert it.func is T
assert it.current == 0
next(it)
assert it.current == 1
def test_tabulate_failure1():
class T:
def __init__(self, val):
self.val = val
def __truediv__(self, other):
return self.__class__(self.val / other.val)
# Function call fails
with pytest.raises(ZeroDivisionError):
next(tabulate(lambda x: T(1) / x, T(0)))
def test_tabulate_pickle3(protocol):
rr = tabulate(T)
x = pickle.dumps(rr, protocol=protocol)
assert next(pickle.loads(x)) == T(0)
def test_tabulate_pickle2(protocol):
rr = tabulate(T, 2)
assert next(rr) == T(2)
x = pickle.dumps(rr, protocol=protocol)
assert next(pickle.loads(x)) == T(3)
def test_tabulate_copy1():
_hf.iterator_copy(tabulate(T))
def test_tabulate_failure4():
# Too few arguments
with pytest.raises(TypeError):
tabulate()
def test_tabulate_failure2():
# incrementing with one fails
with pytest.raises(TypeError):
next(tabulate(iteration_utilities.return_identity, T(0.5)))
def test_tabulate_normal2():
assert list(getitem(tabulate(T), stop=5)) == [T(0), T(1), T(2), T(3), T(4)]
def test_tabulate_normal1():
assert list(getitem(tabulate(lambda x: x, T2(0)),
stop=5)) == [T2(0), T2(1),
T2(2), T2(3),
T2(4)]