src/cpl_query/base/sequence_abc.py

@@ -41,7 +41,7 @@ class SequenceABC(ABC):
         self._values.reset()
 
     def to_list(self) -> list:
-        r"""Converts :class: `cpl_query.enumerable.enumerable_abc.EnumerableABC` to :class: `list`
+        r"""Converts :class: `cpl_query.base.sequence_abc.SequenceABC` to :class: `list`
 
         Returns
         -------

src/cpl_query/enumerable/__init__.py

@@ -21,6 +21,10 @@ from collections import namedtuple
 
 
 # imports:
+from .enumerable import Enumerable
+from .enumerable_abc import EnumerableABC
+from .ordered_enumerable import OrderedEnumerable
+from .ordered_enumerable_abc import OrderedEnumerableABC
 
 VersionInfo = namedtuple('VersionInfo', 'major minor micro')
 version_info = VersionInfo(major='2022', minor='10', micro='9')

src/cpl_query/enumerable/enumerable.py

@@ -57,7 +57,7 @@ class Enumerable(EnumerableABC):
         if _value is None:
             raise ArgumentNoneException(ExceptionArgument.value)
 
-        return _value in self
+        return self.where(lambda x: x == _value).count() > 0
 
     def count(self, _func: Callable = None) -> int:
         if self is None:

src/cpl_query/enumerable/enumerable_abc.py

@@ -65,3 +65,13 @@ class EnumerableABC(SequenceABC, QueryableABC):
 
         # self._values.remove(__object)
         self._values = SequenceValues([x for x in self.to_list() if x != __object], self._type)
+
+    def to_iterable(self) -> 'IterableABC':
+        r"""Converts :class: `cpl_query.enumerable.enumerable_abc.EnumerableABC` to :class: `cpl_query.iterable.iterable_abc.IterableABC`
+
+        Returns
+        -------
+            :class: `cpl_query.iterable.iterable_abc.IterableABC`
+        """
+        from cpl_query.iterable.iterable import Iterable
+        return Iterable(self._type, self.to_list())

src/cpl_query/extension/list.py

@@ -1,9 +1,32 @@
+from typing import Iterable as IterableType
+
 from cpl_query.iterable.iterable import Iterable
 
 
-class List(Iterable):
+class List(Iterable, list):
     r"""Implementation of :class: `cpl_query.extension.iterable.Iterable`
     """
 
-    def __init__(self, t: type = None, values: list = None):
+    def __init__(self, t: type = None, values: IterableType = None):
         Iterable.__init__(self, t, values)
+        list.__init__(self)
+
+    def to_enumerable(self) -> 'EnumerableABC':
+        r"""Converts :class: `cpl_query.iterable.iterable_abc.IterableABC` to :class: `cpl_query.enumerable.enumerable_abc.EnumerableABC`
+
+        Returns
+        -------
+            :class: `cpl_query.enumerable.enumerable_abc.EnumerableABC`
+        """
+        from cpl_query.enumerable.enumerable import Enumerable
+        return Enumerable(self._type, self.to_list())
+
+    def to_iterable(self) -> 'IterableABC':
+        r"""Converts :class: `cpl_query.enumerable.enumerable_abc.EnumerableABC` to :class: `cpl_query.iterable.iterable_abc.IterableABC`
+
+        Returns
+        -------
+            :class: `cpl_query.iterable.iterable_abc.IterableABC`
+        """
+        from cpl_query.iterable.iterable import Iterable
+        return Iterable(self._type, self.to_list())

src/cpl_query/iterable/iterable.py

@@ -54,7 +54,7 @@ class Iterable(IterableABC):
         if _value is None:
             raise ArgumentNoneException(ExceptionArgument.value)
 
-        return _value in self
+        return self.where(lambda x: x == _value).count() > 0
 
     def count(self, _func: Callable = None) -> int:
         if self is None:

src/cpl_query/iterable/iterable_abc.py

@@ -57,3 +57,13 @@ class IterableABC(SequenceABC, QueryableABC):
             self.append(value)
 
         return self
+
+    def to_enumerable(self) -> 'EnumerableABC':
+        r"""Converts :class: `cpl_query.iterable.iterable_abc.IterableABC` to :class: `cpl_query.enumerable.enumerable_abc.EnumerableABC`
+
+        Returns
+        -------
+            :class: `cpl_query.enumerable.enumerable_abc.EnumerableABC`
+        """
+        from cpl_query.enumerable.enumerable import Enumerable
+        return Enumerable(self._type, self.to_list())

unittests/unittests_query/query_test_suite.py

@@ -4,6 +4,7 @@ from unittests_query.enumerable_query_test_case import EnumerableQueryTestCase
 from unittests_query.enumerable_test_case import EnumerableTestCase
 from unittests_query.iterable_query_test_case import IterableQueryTestCase
 from unittests_query.iterable_test_case import IterableTestCase
+from unittests_query.sequence_test_case import SequenceTestCase
 
 
 class QueryTestSuite(unittest.TestSuite):
@@ -12,6 +13,7 @@ class QueryTestSuite(unittest.TestSuite):
         unittest.TestSuite.__init__(self)
 
         loader = unittest.TestLoader()
+        self.addTests(loader.loadTestsFromTestCase(SequenceTestCase))
         self.addTests(loader.loadTestsFromTestCase(EnumerableTestCase))
         self.addTests(loader.loadTestsFromTestCase(EnumerableQueryTestCase))
         self.addTests(loader.loadTestsFromTestCase(IterableTestCase))
@@ -19,3 +21,8 @@ class QueryTestSuite(unittest.TestSuite):
 
     def run(self, *args):
         super().run(*args)
+
+
+if __name__ == "__main__":
+    runner = unittest.TextTestRunner()
+    runner.run(QueryTestSuite())

unittests/unittests_query/sequence_test_case.py

@@ -0,0 +1,32 @@
+import unittest
+
+from cpl_query.enumerable import Enumerable
+from cpl_query.extension.list import List
+from cpl_query.iterable import Iterable
+
+
+class SequenceTestCase(unittest.TestCase):
+
+    def test_to_list(self):
+        _list = List().extend(range(0, 100))
+        enumerable = Enumerable.range(0, 100)
+        iterable = Iterable(int, list(range(0, 100)))
+
+        self.assertEqual(enumerable.to_list(), _list.to_list())
+        self.assertEqual(iterable.to_list(), _list.to_list())
+
+    def test_to_enumerable(self):
+        _list = List().extend(range(0, 100))
+        enumerable = Enumerable.range(0, 100)
+        iterable = Iterable(int, list(range(0, 100)))
+
+        self.assertEqual(type(_list.to_enumerable()), type(enumerable))
+        self.assertEqual(type(iterable.to_enumerable()), type(enumerable))
+
+    def test_to_iterable(self):
+        _list = List().extend(range(0, 100))
+        enumerable = Enumerable.range(0, 100)
+        iterable = Iterable(int, list(range(0, 100)))
+
+        self.assertEqual(type(_list.to_iterable()), type(iterable))
+        self.assertEqual(type(enumerable.to_iterable()), type(iterable))