fix

tests/kit.Collection.php

@@ -31,7 +31,7 @@ print_r($x);
             console.log(true, msg);
             return;
         }
-        console.error(msg, value, need);
+        console.error(msg, '-', 'value:', value, 'need:', need);
     }
 </script>
 
@@ -213,7 +213,14 @@ kit.ready(['collection'], function () {
     assertSame(x3.last(), 111, 'only last+');
     assertSame(x3.length, 1, 'only length');
 
-x.
+
+    xOb = {a: 'a10', b: 'b11', 10: 101};
+    x = new kit.Collection(xOb);
+    x.set(11, 111);
+    assertSame(x.indexKey(11), 3, 'indexKey (int)');
+    assertSame(x.indexKey('11'), 3, 'indexKey (string)');
+    assertSame(x.indexKey('111'), -1, 'indexKey (-1)');
+
 
 
 });