[pypy-commit] pypy fix-2198: Add new test cases for assigning slices

[Vincent Legoll]

Author: Vincent Legoll <vincent.legoll at idgrilles.fr>
Branch: fix-2198
Changeset: r81398:f0c46bb74141
Date: 2015-12-19 10:18 +0100
http://bitbucket.org/pypy/pypy/changeset/f0c46bb74141/

Log:	Add new test cases for assigning slices

diff --git a/pypy/objspace/std/test/test_listobject.py b/pypy/objspace/std/test/test_listobject.py
--- a/pypy/objspace/std/test/test_listobject.py
+++ b/pypy/objspace/std/test/test_listobject.py
@@ -1003,6 +1003,8 @@
         l = l0 = ['a', 'b']
         l[1:1] = ['ae']
         assert l == ['a', 'ae', 'b']
+        l[1:1] = []
+        assert l == ['a', 'ae', 'b']
         l[1:100] = ['B']
         assert l == ['a', 'B']
         l[:] = []
@@ -1010,9 +1012,10 @@
         assert l is l0
 
         l = []
-        l2 = range(3)
-        l.__setslice__(0,3,l2)
-        assert l == [0,1,2]
+        length = 3
+        l2 = range(length)
+        l.__setslice__(0, length, l2)
+        assert l == range(length)
 
     def test_assign_extended_slice(self):
         l = l0 = ['a', 'b', 'c']
@@ -1043,13 +1046,10 @@
         l[:] = l
         assert l == [1,2,3,4]
 
-        l = [1,2,3,4]
+        l = l0 = [1,2,3,4]
         l[0:2] = l
         assert l == [1,2,3,4,3,4]
-
-        l = [1,2,3,4]
-        l[0:2] = l
-        assert l == [1,2,3,4,3,4]
+        assert l0 is l
 
         l = [1,2,3,4,5,6,7,8,9,10]
         raises(ValueError, "l[5::-1] = l")
@@ -1061,6 +1061,11 @@
         l[5:] = l
         assert l == [1,2,3,4,5,1,2,3,4,5,6,7,8,9,10]
 
+        l = l0 = [1,2,3,4,5,6]
+        raises(ValueError, "l[::-2] = l")
+        assert l == [1,2,3,4,5,6]
+        assert l is l0
+
         l = [1,2,3,4,5,6]
         l[::-1] = l
         assert l == [6,5,4,3,2,1]
@@ -1337,6 +1342,10 @@
         l.__setslice__(0, 2, [5, 6])
         assert l == [5, 6, 3, 4]
 
+        l = [1,2,3,4]
+        l.__setslice__(-2, -1, [5, 6])
+        assert l == [5, 6, 1, 2, 3,4]
+
         l = []
         l.__setslice__(0,0,[3,4,5])
         assert l == [3,4,5]