[ADD] Collection#pred as well, while we're at it

bzr revid: xmo@openerp.com-20120710131205-voi1nc5rkvewjr2f

1 files changed, 41 insertions, 0 deletions

diff --git a/addons/web/static/test/list-utils.js b/addons/web/static/test/list-utils.js
index 18069943b2d..baec728528e 100644
--- a/addons/web/static/test/list-utils.js
+++ b/addons/web/static/test/list-utils.js
@@ -278,6 +278,9 @@ $(document).ready(function () {
                   root.at(0).attributes,
                   "should return index 0 as successor to last record if" +
                   " wraparound is set");
+        deepEqual(root.succ(root.at(2), {wraparound: true}).attributes,
+                  root.at(3).attributes,
+                  "wraparound should have no effect if not succ(last_record)");
     });
     test('successor', function () {
         var root = new openerp.web.list.Collection();
@@ -295,6 +298,44 @@ $(document).ready(function () {
                   root.get(3).attributes,
                   "should wraparound within a collection");
     });
+    test('degenerate-predecessor', function () {
+        var root = new openerp.web.list.Collection([
+            {id: 1, value: 1},
+            {id: 2, value: 2},
+            {id: 3, value: 3},
+            {id: 4, value: 5},
+            {id: 5, value: 8},
+        ]);
+
+        deepEqual(root.pred(root.at(2)).attributes,
+                  root.at(1).attributes,
+                  "should return the record at (index - 1) from the pivot");
+        equal(root.pred(root.at(0)), null,
+              "should return null as predecessor to first record");
+        deepEqual(root.pred(root.at(0), {wraparound: true}).attributes,
+                  root.at(4).attributes,
+                  "should return last record as predecessor to first record" +
+                  " if wraparound is set");
+        deepEqual(root.pred(root.at(1), {wraparound: true}).attributes,
+                  root.at(0).attributes,
+                  "wraparound should have no effect if not pred(first_record)");
+    });
+    test('predecessor', function () {
+        var root = new openerp.web.list.Collection();
+        root.proxy('first').add([{id: 1, value: 1}, {id: 2, value: 2}]);
+        root.proxy('second').add([{id: 3, value: 3}, {id: 4, value: 5}]);
+        root.proxy('third').add([{id: 5, value: 8}, {id: 6, value: 13}]);
+
+        deepEqual(root.pred(root.get(4)).attributes,
+                  root.get(3).attributes,
+                  "should get predecessor");
+        equal(root.pred(root.get(3)),
+              null,
+              "predecessor do not cross collections");
+        deepEqual(root.pred(root.get(3), {wraparound: true}).attributes,
+                  root.get(4).attributes,
+                  "should wraparound within a collection");
+    });
 
     module('list-hofs', {
         setup: function () {