def test_split_existing(self):
td = tempfile.mkdtemp()
try:
assert Nested._split_existing(td) == (td, '.')
assert Nested._split_existing(td + os.sep) == (td, '.')
assert Nested._split_existing(os.path.join(td, 'a', 'b', 'c')) == (
td, os.path.join('a', 'b', 'c'))
assert Nested._split_existing(os.path.join(td, 'a', '..', 'c')) == (td, 'c')
finally:
safe_rmtree(td)
def test_generate_prefixes(self):
a, b, sep = 'a', 'b', os.sep
assert list(Nested._generate_prefixes(sep)) == []
assert list(Nested._generate_prefixes('')) == []
assert list(Nested._generate_prefixes('.')) == []
a_sep_b = a + sep + b
assert list(Nested._generate_prefixes(a_sep_b)) == [a_sep_b, a]
sep_a_sep_b = sep + a + sep + b
assert list(Nested._generate_prefixes(sep_a_sep_b)) == [sep_a_sep_b, sep + a]
