def test_is_unique(self):
tests = ['', 'a', 'abcdef', 'aa', 'abcda']
expected = [True, True, True, False, False]
fns = [(lambda x: is_unique(x)), (lambda x: is_unique_no_ds(x))]
for fn in fns:
for i in range(len(tests)):
actual = fn(tests[i])
self.assertEqual(actual, expected[i],
'case {} for fn {} failed'.format(i, fn))
def test_worst_case(self):
self.assertEqual(subject.is_unique('abcdefghijklmnopp'), False)
def test_repeated(self):
self.assertEqual(subject.is_unique('ababababa'), False)
def test_simple(self):
self.assertEqual(subject.is_unique('abcdef'), True)
def test_trivial(self):
self.assertEqual(subject.is_unique(''), True)