diff --git a/spec/observe-sorted-spec.js b/spec/observe-sorted-spec.js
index b07dda8..7814c24 100644
--- a/spec/observe-sorted-spec.js
+++ b/spec/observe-sorted-spec.js
@@ -26,5 +26,49 @@ describe("sorted block observer", function () {
         expect(object.sorted).toEqual([array[2], array[0], array[1]]);
     });
 
+    it("sorts objects missing the sorted property", function () {
+
+        var array = [
+            {key: 0},
+            {key: 1},
+            {key: 2}
+        ];
+
+        var object = Bindings.defineBindings({
+            array: array
+        }, {
+            sorted: {"<-": "array.sorted{value}"}
+        });
+
+        expect(object.sorted.length).toEqual(3);
+
+        array[2].value = 'a';
+        array[1].value = 'b';
+        array[0].value = 'c';
+
+        expect(object.sorted.length).toEqual(3);
+        expect(object.sorted).toEqual([array[2], array[1], array[0]]);
+    });
+
+    it("sorts objects with equal values", function () {
+
+        var array = [
+            {key: 0, value: "b"},
+            {key: 1, value: "b"},
+            {key: 2, value: "b"}
+        ];
+
+        var object = Bindings.defineBindings({
+            array: array
+        }, {
+            sorted: {"<-": "array.sorted{value}"}
+        });
+
+        array[2].value = 'a';
+        array[0].value = 'c';
+
+        expect(object.sorted).toEqual([array[2], array[1], array[0]]);
+    });
+
 });