Computed values listen mutations even if property is not defined

Author: Josema

package.json

@@ -1,6 +1,6 @@
 {
   "name": "dop",
-  "version": "0.26.1",
+  "version": "0.26.2",
   "main": "./dist/dop.nodejs.js",
   "browser": "./dist/dop.js",
   "unpkg": "./dist/dop.min.js",

src/core/objects/storeMutation.js

@@ -26,14 +26,19 @@ dop.core.storeMutation = function(mutation) {
 
 
     // Collectors
-    for (;index<total; index++)
-        if (collectors[index].add(mutation))
-            return dop.core.runDerivations(path_id);
+    for (;index<total; index++) {
+        if (collectors[index].add(mutation)) {
+            dop.core.runDerivations(path_id_parent);
+            dop.core.runDerivations(path_id);
+            return
+        }
+    }
 
 
     var snapshot = new dop.core.snapshot([mutation]);
     snapshot.emit();
 
+    dop.core.runDerivations(path_id_parent);
     dop.core.runDerivations(path_id);
 };
 

test/computeds.js

@@ -644,4 +644,39 @@ test('Update computeds', function(t) {
     // t.equal(collector.mutations.length, 4, "mutations")
     collector.emit()
     t.end()
-});
+});
+
+
+test('Computed must listen mutations even if property is not defined (objects)', function(t) {
+    var object = dop.register({
+        items: {},
+        totalItems: computed(function () {
+            return Object.keys(this.items).length
+        })
+    })
+
+    t.equal(object.totalItems, 0)
+    set(object.items, 'demo', true)
+    set(object.items, 'demo2', true)
+    t.equal(object.totalItems, 2)
+    
+    t.end()
+})
+
+
+test('Computed must listen mutations even if property is not defined (arrays)', function(t) {
+    var object = dop.register({
+        items: [],
+        totalItems: computed(function () {
+            return this.items.length
+        })
+    })
+
+    t.equal(object.totalItems, 0)
+    set(object.items, 0, true)
+    object.items.push(true)
+    set(object.items, 'demo2', true)
+    t.equal(object.totalItems, 2)
+    
+    t.end()
+})