def test_first_or_default2(self): linq = Linq([]) assert_equal(linq.first_or_default(), None) assert_equal(linq.first_or_default(default=100), 100) assert_equal(linq.first_or_default(default=100), 100)
def test_first_or_default3(self): linq = Linq([11, 14, 15, 19]) assert_equal(linq.first_or_default(cond_f=lambda x: x % 2 == 0), 14) assert_equal(linq.first_or_default(cond_f=lambda x: x % 2 == 0), 14)
def test_first_or_default(self): linq = Linq([11, 13, 15, 19]) assert_equal(linq.first_or_default(), 11) assert_equal(linq.first_or_default(), 11)