Mention and test use of slices

Author: Code0x58

README.rst

@@ -41,8 +41,12 @@ Basics
     # the key is split on '.'s and works on dictionaries
     del store['a_dictionary.dict-list']
     store['a_dictionary.new_value'] = "old value"
+    #  you can also use the syntactic sugar for tuple keys (explicit lists work too)
     assert store['a_dictionary', 'new_value'] == "old value"
-    assert store['a_list', 1] == 2
+    # you can traverse lists too
+    assert store['a_list', -1] == 3
+    # you can use slices in lists
+    assert len(store['a_list', 1:]) == 2
 
     # deep copies are made when assigning values
     my_list = ['fun']

jsonstore/tests.py

@@ -170,12 +170,13 @@ def test_nested_dict_helper(self):
     def test_nested_getitem(self):
         self.store["list"] = [
             {
-                "key": [None, "value"]
+                "key": [None, "value", "last"]
             }
         ]
         assert self.store["list", 0, "key", 1] == "value"
-        assert self.store[["list", 0, "key", 1]] == "value"
+        assert self.store[["list", 0, "key", -1]] == "last"
         self.assertRaises(TypeError, self._getitem("list.0.key.1"))
+        assert len(self.store["list", 0, "key", 1:]) == 2
 
     def test_del(self):
         self.store.key = None