def test_take_dict_more_items(self):
d = {'a': 1, 'b': 2, 'c': 3, 'd': 4}
e = Enumerable(d)
result = sorted(list(e.take(15)))
expected_result = ['a', 'b', 'c', 'd']
self.assertListEqual(result, expected_result)
def test_last_dict_empty(self):
d = dict()
e = Enumerable(d)
result = e.last()
self.assertIsNone(result)
def test_last_range_no_predicate(self):
e = Enumerable(range(10))
result = e.last()
self.assertEqual(result, 9)
def test_last_range_predicate_no_match_default(self):
e = Enumerable(range(10))
result = e.last(lambda x: x == 'hello', default=False)
self.assertFalse(result)
def test_last_dict_predicate_exists(self):
d = {'a': 1, 'b': 2}
e = Enumerable(d)
result = e.last(lambda x: x != 'a')
self.assertEqual(result, 'b')
def test_all_empty(self):
e = Enumerable.empty()
result = e.all(lambda x: False)
self.assertTrue(result)
def test_last_range_predicate_exists(self):
e = Enumerable(range(10))
result = e.last(lambda x: x < 6)
self.assertEqual(result, 5)
def test_any_dict_empty(self):
d = dict()
e = Enumerable(d)
result = e.any(lambda x: True)
self.assertFalse(result)
def test_any_empty(self):
e = Enumerable.empty()
result = e.any(lambda x: False)
self.assertFalse(result)
def test_any_dict_predicate_exists(self):
d = {'a': 1, 'b': 2}
e = Enumerable(d)
result = e.any(lambda x: x.isalpha())
self.assertTrue(result)
def test_any_dict_predicate_not_exists(self):
d = {'a': 1, 'b': 2}
e = Enumerable(d)
result = e.any(lambda x: x.isdigit())
self.assertFalse(result)
def test_any_range_predicate_not_exists(self):
e = Enumerable(range(10))
result = e.any(lambda x: x > 100)
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_take_negative_number_of_items(self):
l = [1, 2, 3, 'a']
e = Enumerable(l)
result = list(e.take(-10))
expected_result = []
self.assertListEqual(result, expected_result)
def test_all_dict_all_true(self):
d = {'a': 1, 'b': 2}
e = Enumerable(d)
result = e.all(lambda x: x.isalpha())
self.assertTrue(result)
def test_any_range_some_true(self):
e = Enumerable(range(10))
result = e.any(lambda x: x == 9)
self.assertTrue(result)
def test_all_dict_empty(self):
d = dict()
e = Enumerable(d)
result = e.all(lambda x: True)
self.assertTrue(result)
def test_select_to_dict(self):
e = Enumerable(range(1, 4))
result = e.select(lambda x: 'a' * x).to_dict(lambda x: x,
lambda x: len(x))
self.assertDictEqual(result, {'a': 1, 'aa': 2, 'aaa': 3})
def test_all_range_some_false(self):
e = Enumerable(range(10))
result = e.all(lambda x: x < 9)
self.assertFalse(result)
def test_select_empty_list(self):
e = Enumerable([])
result = e.select(lambda x: 'hello').to_list()
self.assertListEqual(result, [])
def test_last_range_predicate_no_match(self):
e = Enumerable(range(10))
result = e.last(lambda x: x == 'hello')
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_last_dict_no_predicate(self):
d = {'a': 1, 'b': 2}
e = Enumerable(d)
result = e.last()
self.assertIn(result, d.keys())
def test_select_to_list(self):
e = Enumerable(range(5))
result = e.select(lambda x: x * 2).to_list()
self.assertListEqual(result, [0, 2, 4, 6, 8])
def test_last_dict_predicate_not_exists(self):
d = {'a': 1, 'b': 2}
e = Enumerable(d)
result = e.last(lambda x: x > 'z')
self.assertIsNone(result)
def test_all_range_all_true(self):
e = Enumerable(range(10))
result = e.all(lambda x: x < 100)
self.assertTrue(result)
def test_last_empty_no_predicate(self):
e = Enumerable.empty()
result = e.last()
self.assertIsNone(result)
def test_all_dict_all_false(self):
d = {'a': 1, 'b': 2}
e = Enumerable(d)
result = e.all(lambda x: x > 'b')
self.assertFalse(result)
def test_last_empty_predicate(self):
e = Enumerable.empty()
result = e.last(lambda x: len(x))
self.assertIsNone(result)
def test_take_range_some_items(self):
e = Enumerable(range(10))
result = list(e.take(5))
expected_result = [0, 1, 2, 3, 4]
self.assertListEqual(result, expected_result)