class TestFrozenList(CheckImmutable, CheckStringMixin):
mutable_methods = ('extend', 'pop', 'remove', 'insert')
unicode_container = FrozenList(["\u05d0", "\u05d1", "c"])
def setup_method(self, _):
self.lst = [1, 2, 3, 4, 5]
self.container = FrozenList(self.lst)
self.klass = FrozenList
def test_add(self):
result = self.container + (1, 2, 3)
expected = FrozenList(self.lst + [1, 2, 3])
self.check_result(result, expected)
result = (1, 2, 3) + self.container
expected = FrozenList([1, 2, 3] + self.lst)
self.check_result(result, expected)
def test_iadd(self):
q = r = self.container
q += [5]
self.check_result(q, self.lst + [5])
# Other shouldn't be mutated.
self.check_result(r, self.lst)
def test_union(self):
result = self.container.union((1, 2, 3))
expected = FrozenList(self.lst + [1, 2, 3])
self.check_result(result, expected)
def test_difference(self):
result = self.container.difference([2])
expected = FrozenList([1, 3, 4, 5])
self.check_result(result, expected)
def test_difference_dupe(self):
result = FrozenList([1, 2, 3, 2]).difference([2])
expected = FrozenList([1, 3])
self.check_result(result, expected)
def test_tricky_container_to_bytes_raises(self):
# GH 26447
msg = "^'str' object cannot be interpreted as an integer$"
with pytest.raises(TypeError, match=msg):
bytes(self.unicode_container)
class TestFrozenList(CheckImmutable, CheckStringMixin):
mutable_methods = ('extend', 'pop', 'remove', 'insert')
unicode_container = FrozenList(["\u05d0", "\u05d1", "c"])
def setup_method(self, _):
self.lst = [1, 2, 3, 4, 5]
self.container = FrozenList(self.lst)
self.klass = FrozenList
def test_add(self):
result = self.container + (1, 2, 3)
expected = FrozenList(self.lst + [1, 2, 3])
self.check_result(result, expected)
result = (1, 2, 3) + self.container
expected = FrozenList([1, 2, 3] + self.lst)
self.check_result(result, expected)
def test_iadd(self):
q = r = self.container
q += [5]
self.check_result(q, self.lst + [5])
# Other shouldn't be mutated.
self.check_result(r, self.lst)
def test_union(self):
result = self.container.union((1, 2, 3))
expected = FrozenList(self.lst + [1, 2, 3])
self.check_result(result, expected)
def test_difference(self):
result = self.container.difference([2])
expected = FrozenList([1, 3, 4, 5])
self.check_result(result, expected)
def test_difference_dupe(self):
result = FrozenList([1, 2, 3, 2]).difference([2])
expected = FrozenList([1, 3])
self.check_result(result, expected)
class TestFrozenList:
unicode_container = FrozenList(["\u05d0", "\u05d1", "c"])
def setup_method(self, _):
self.lst = [1, 2, 3, 4, 5]
self.container = FrozenList(self.lst)
def check_mutable_error(self, *args, **kwargs):
# Pass whatever function you normally would to pytest.raises
# (after the Exception kind).
mutable_regex = re.compile("does not support mutable operations")
msg = "'(_s)?re.(SRE_)?Pattern' object is not callable"
with pytest.raises(TypeError, match=msg):
mutable_regex(*args, **kwargs)
def test_no_mutable_funcs(self):
def setitem():
self.container[0] = 5
self.check_mutable_error(setitem)
def setslice():
self.container[1:2] = 3
self.check_mutable_error(setslice)
def delitem():
del self.container[0]
self.check_mutable_error(delitem)
def delslice():
del self.container[0:3]
self.check_mutable_error(delslice)
mutable_methods = ("extend", "pop", "remove", "insert")
for meth in mutable_methods:
self.check_mutable_error(getattr(self.container, meth))
def test_slicing_maintains_type(self):
result = self.container[1:2]
expected = self.lst[1:2]
self.check_result(result, expected)
def check_result(self, result, expected):
assert isinstance(result, FrozenList)
assert result == expected
def test_string_methods_dont_fail(self):
repr(self.container)
str(self.container)
bytes(self.container)
def test_tricky_container(self):
repr(self.unicode_container)
str(self.unicode_container)
def test_add(self):
result = self.container + (1, 2, 3)
expected = FrozenList(self.lst + [1, 2, 3])
self.check_result(result, expected)
result = (1, 2, 3) + self.container
expected = FrozenList([1, 2, 3] + self.lst)
self.check_result(result, expected)
def test_iadd(self):
q = r = self.container
q += [5]
self.check_result(q, self.lst + [5])
# Other shouldn't be mutated.
self.check_result(r, self.lst)
def test_union(self):
result = self.container.union((1, 2, 3))
expected = FrozenList(self.lst + [1, 2, 3])
self.check_result(result, expected)
def test_difference(self):
result = self.container.difference([2])
expected = FrozenList([1, 3, 4, 5])
self.check_result(result, expected)
def test_difference_dupe(self):
result = FrozenList([1, 2, 3, 2]).difference([2])
expected = FrozenList([1, 3])
self.check_result(result, expected)
def test_tricky_container_to_bytes_raises(self):
# GH 26447
msg = "^'str' object cannot be interpreted as an integer$"
with pytest.raises(TypeError, match=msg):
bytes(self.unicode_container)