Improved list to handle typing

src/cpl_query/tests/iterable_test.py

@@ -0,0 +1,28 @@
+import unittest
+
+from cpl_query.extension.list import List
+
+
+class IterableTest(unittest.TestCase):
+
+    def setUp(self) -> None:
+        self._list = List(int)
+
+    def _clear(self):
+        self._list.clear()
+        self.assertEqual(self._list, [])
+
+    def test_append(self):
+        self._list.append(1)
+        self._list.append(2)
+        self._list.append(3)
+
+        self.assertEqual(self._list, [1, 2, 3])
+        self._clear()
+
+    def test_append_wrong_type(self):
+        self._list.append(1)
+        self._list.append(2)
+
+        self.assertRaises(Exception, lambda v: self._list.append(v), '3')
+        self._clear()