def test_walk_nok_string_dict():
seq = {"a": "b"}
message = r"0"
with pytest.raises(KeyError, match=message):
mc.walk(seq)
def test_walk_ok_empty_string():
empty = ''
assert mc.walk(empty) is None
def test_walk_ok_iterator_list():
the_same = iter([1, 2, 3])
seq = [the_same, the_same, the_same]
assert mc.walk(seq) == the_same
def test_walk_ok_int_dict():
seq = {0: "a", 1: "b"}
assert mc.walk(seq) in seq.values()
def test_walk_nok_wrong_type_generator_expression():
message = r"object of type 'generator' has no len\(\)"
with pytest.raises(TypeError, match=message):
mc.walk(n for n in range(1234))
def test_walk_ok_function_list():
the_same = print
seq = [the_same, the_same, the_same]
assert mc.walk(seq) == the_same
def test_walk_ok_string():
string = "abc"
step = mc.walk(string)
assert len(step) == 1
assert step in string
def test_walk_nok_wrong_type_float():
bad = 3.1415
message = r"object of type 'float' has no len\(\)"
with pytest.raises(TypeError, match=message):
mc.walk(bad)
def test_walk_ok_empty_dict():
seq = dict()
assert mc.walk(seq) is None
def test_walk_ok_empty_tuple():
seq = tuple()
assert mc.walk(seq) is None
def test_walk_ok_empty_set():
seq = {}
assert mc.walk(seq) is None
def test_walk_ok_empty_list():
seq = []
assert mc.walk(seq) is None
def test_walk_nok_wrong_type_function():
message = r"object of type 'builtin_function_or_method' has no len\(\)"
with pytest.raises(TypeError, match=message):
mc.walk(print)
def test_walk_nok_wrong_type_none():
bad = None
assert mc.walk(bad) is None
def test_walk_ok_string_list():
the_same = "a"
seq = [the_same, the_same, the_same]
assert mc.walk(seq) == the_same
def test_walk_nok_wrong_type_int():
bad = 42
message = r"object of type 'int' has no len\(\)"
with pytest.raises(TypeError, match=message):
mc.walk(bad)
def test_walk_ok_range():
a_range = range(42)
step = mc.walk(a_range)
assert step in a_range
assert isinstance(step, int)
def main(argv=None):
"""Process ... TODO."""
argv = sys.argv[1:] if argv is None else argv
verbose = True if "-v" in argv or "--verbose" in argv else False
verbose and print(f"No verbose mode implemented")
print(walk(argv))
def test_walk_nok_wrong_type_complex():
bad = complex(1, -1)
message = r"object of type 'complex' has no len\(\)"
with pytest.raises(TypeError, match=message):
mc.walk(bad)
