From 45733b30ef8e3fcc7c814fa53cdd392f7cacf50a Mon Sep 17 00:00:00 2001
From: Sven Heidemann <sven.heidemann@sh-edraft.de>
Date: Tue, 27 Jul 2021 10:59:24 +0200
Subject: [PATCH] Improved error handling

---
 src/cpl_query/_query/contains_query.py | 11 +++++++++--
 src/cpl_query/exceptions.py            |  1 +
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/cpl_query/_query/contains_query.py b/src/cpl_query/_query/contains_query.py
index e235c65d..47d29dc8 100644
--- a/src/cpl_query/_query/contains_query.py
+++ b/src/cpl_query/_query/contains_query.py
@@ -1,5 +1,12 @@
+from cpl_query.exceptions import ArgumentNoneException, ExceptionArgument
 from cpl_query.extension.iterable_abc import IterableABC
 
 
-def contains_query(_list: IterableABC, value: object) -> bool:
-    return value in _list
+def contains_query(_list: IterableABC, _value: object) -> bool:
+    if _list is None:
+        raise ArgumentNoneException(ExceptionArgument.list)
+    
+    if _value is None:
+        raise ArgumentNoneException(ExceptionArgument.value)
+    
+    return _value in _list
diff --git a/src/cpl_query/exceptions.py b/src/cpl_query/exceptions.py
index b0a320ea..c9694221 100644
--- a/src/cpl_query/exceptions.py
+++ b/src/cpl_query/exceptions.py
@@ -6,6 +6,7 @@ class ExceptionArgument(Enum):
     list = 'list'
     func = 'func'
     type = 'type'
+    value = 'value'
 
 
 # exceptions