Fix array.array.insert(), so that it treats negative indices as
being relative to the end of the array, just like list.insert() does.
This closes SF bug #739313.
diff --git a/Lib/test/test_array.py b/Lib/test/test_array.py
index 7a3308b..98589a5 100755
--- a/Lib/test/test_array.py
+++ b/Lib/test/test_array.py
@@ -82,6 +82,30 @@
self.assertRaises(TypeError, a.insert, None)
self.assertRaises(TypeError, a.insert, 0, None)
+ a = array.array(self.typecode, self.example)
+ a.insert(-1, self.example[0])
+ self.assertEqual(
+ a,
+ array.array(
+ self.typecode,
+ self.example[:-1] + self.example[:1] + self.example[-1:]
+ )
+ )
+
+ a = array.array(self.typecode, self.example)
+ a.insert(-1000, self.example[0])
+ self.assertEqual(
+ a,
+ array.array(self.typecode, self.example[:1] + self.example)
+ )
+
+ a = array.array(self.typecode, self.example)
+ a.insert(1000, self.example[0])
+ self.assertEqual(
+ a,
+ array.array(self.typecode, self.example + self.example[:1])
+ )
+
def test_tofromfile(self):
a = array.array(self.typecode, 2*self.example)
self.assertRaises(TypeError, a.tofile)