Added unit tests

Author: otethal

graalpython/com.oracle.graal.python.test/src/tests/test_list.py

@@ -1,4 +1,4 @@
-# Copyright (c) 2018, 2019, Oracle and/or its affiliates.
+# Copyright (c) 2018, 2020, Oracle and/or its affiliates.
 # Copyright (C) 1996-2017 Python Software Foundation
 #
 # Licensed under the PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
@@ -91,6 +91,10 @@ def imul(a, b): a *= b
         self.assertRaises((MemoryError, OverflowError), mul, lst, n)
         self.assertRaises((MemoryError, OverflowError), imul, lst, n)
 
+    def test_large_index(self):
+        lst = [0]
+        self.assertRaises(IndexError, lambda: lst[2**100])
+
     def test_repr_large(self):
 
         # Check the repr of large list objects

graalpython/com.oracle.graal.python.test/src/tests/test_string.py

@@ -54,6 +54,7 @@ def test_find():
     assert s.find('cau', MyIndexable(5), None) == 5
     assert s.find('cau', MyIndexable(5), MyIndexable(8)) == 5
     assert s.find('cau', None, MyIndexable(8)) == 5
+    assert s.find('cau', 2**100) == -1
 
 
 def test_rfind():