def test_last_empty_predicate(self):
e = Enumerable.empty()
result = e.last(lambda x: len(x))
self.assertIsNone(result)
def test_all_empty(self):
e = Enumerable.empty()
result = e.all(lambda x: False)
self.assertTrue(result)
def test_last_empty_no_predicate(self):
e = Enumerable.empty()
result = e.last()
self.assertIsNone(result)
def test_select_empty(self):
e = Enumerable.empty()
result = e.select(lambda x: x / 3).to_list()
self.assertListEqual(result, [])
def test_any_empty(self):
e = Enumerable.empty()
result = e.any(lambda x: False)
self.assertFalse(result)
def test_take_empty(self):
e = Enumerable.empty()
result = list(e.take(3))
expected_result = []
self.assertListEqual(result, expected_result)
def test_select_many_empty_with_predicate(self):
e = Enumerable.empty()
result = e.select_many(lambda x: x[0]).to_list()
self.assertListEqual(result, [])
def test_select_many_empty(self):
e = Enumerable.empty()
result = e.select_many().to_list()
self.assertListEqual(result, [])