src/cpl_query/_query/first.py

@@ -1,6 +1,6 @@
 from typing import Optional
 
-from cpl_query.exceptions import ArgumentNoneException, ExceptionArgument
+from cpl_query.exceptions import ArgumentNoneException, ExceptionArgument, IndexOutOfRangeException
 from cpl_query.extension.iterable_abc import IterableABC
 
 
@@ -9,7 +9,7 @@ def first_query(_list: IterableABC) -> any:
         raise ArgumentNoneException(ExceptionArgument.list)
 
     if len(_list) == 0:
-        raise Exception('Index out of range')
+        raise IndexOutOfRangeException()
 
     return _list[0]
 

src/cpl_query/exceptions.py

@@ -14,7 +14,13 @@ class ExceptionArgument(Enum):
 class ArgumentNoneException(Exception):
 
     def __init__(self, arg: ExceptionArgument):
-        Exception.__init__(self, f'Argument {arg} is None')
+        Exception.__init__(self, f'argument {arg} is None')
+
+
+class IndexOutOfRangeException(Exception):
+
+    def __init__(self):
+        Exception.__init__(self, f'List index out of range')
 
 
 class InvalidTypeException(Exception):

src/cpl_query/tests/query_test.py

@@ -100,6 +100,9 @@ class QueryTest(unittest.TestCase):
         self.assertEqual(self._tests[index], self._tests.element_at_or_default(index))
         self.assertIsNone(self._tests.element_at_or_default(len(self._tests)))
 
+        test = [1, 2, 3]
+        t = test[100]
+
     def test_first(self):
         results = []
         for user in self._tests: