def test_bad_empty_type(self):
for t in (int, float):
try:
Empty(t)
except TypeError:
pass
else:
raise AssertionError("Failed to raise TypeError for %s" % t)
def test_userdef_failure(self):
class A(object):
def __len__(self):
return 2
try:
check_type(Empty(A), A())
except _TC_LengthError, e:
assert e.wrong == 2
assert e.right == 0
def test_inappropriate_type(self):
from typecheck import _TC_TypeError
for t in (dict, list, set):
try:
check_type(Empty(t), 5)
except _TC_TypeError, e:
assert e.right == t
assert e.wrong == int
else:
raise AssertionError("Failed to raise _TC_TypeError")
def test_hash(self):
eq_tests = [(Empty(list), Empty(list)), (Empty(dict), Empty(dict)),
(Empty(set), Empty(set))]
ne_tests = [(Empty(list), Empty(dict)), (Empty(list), Empty(set)),
(Empty(dict), Empty(set))]
self.multipleAssertEqualHashes(eq_tests, ne_tests)
def test_equality(self):
eq_tests = [(Empty(list), Empty(list)), (Empty(dict), Empty(dict)),
(Empty(set), Empty(set))]
ne_tests = [
(Empty(list), Empty(dict)),
(Empty(list), Empty(set)),
(Empty(dict), Empty(list)),
(Empty(dict), Empty(set)),
(Empty(set), Empty(list)),
(Empty(set), Empty(dict)),
]
self.multipleAssertEqual(eq_tests, ne_tests)
def test_userdef_success(self):
class A(object):
def __len__(self):
return 0
check_type(Empty(A), A())
def test_set_failure(self):
try:
check_type(Empty(set), set([5, 6]))
except _TC_LengthError, e:
assert e.wrong == 2
assert e.right == 0
def test_set_success(self):
check_type(Empty(set), set())
def test_dict_failure(self):
try:
check_type(Empty(dict), {'f': 5})
except _TC_LengthError, e:
assert e.wrong == 1
assert e.right == 0
def test_dict_success(self):
check_type(Empty(dict), {})
def test_list_success(self):
check_type(Empty(list), [])
def test_bad_constructor_2(self):
try:
Empty(dict, list)
except TypeError, e:
self.assertEqual(str(e),
"__init__() takes exactly 2 arguments (3 given)")