tests: Add test for setting property not resetting enumerability

Author: Lord-McSweeney

tests/tests/swfs/avm2/property_is_enumerable_reset/Test.as

@@ -0,0 +1,36 @@
+package {
+    import flash.display.MovieClip;
+
+    public class Test extends MovieClip {
+        public function Test() {
+            super();
+            var obj:Object = {};
+
+            testObj(obj, "before setting property");
+            obj.prop = 99;
+            testObj(obj, "after setting property");
+            obj.setPropertyIsEnumerable("prop", false);
+            testObj(obj, "after making property not-enumerable");
+            obj.prop = 99;
+            testObj(obj, "after re-setting property");
+            obj.prop = 89;
+            testObj(obj, "after re-setting property (2)");
+            delete obj.prop;
+            testObj(obj, "after deleting property");
+            obj.prop = 12;
+            testObj(obj, "after re-setting property (3)");
+        }
+
+        static function testObj(obj:Object, info:String) {
+            trace(info);
+            trace("    value of prop: " + obj.prop);
+            trace("    is prop enumerable: " + obj.propertyIsEnumerable("prop"));
+            for (var key in obj) {
+                if (key === "prop") {
+                    trace("    prop iterated over");
+                }
+            }
+        }
+    }
+}
+

tests/tests/swfs/avm2/property_is_enumerable_reset/output.txt

@@ -0,0 +1,23 @@
+before setting property
+    value of prop: undefined
+    is prop enumerable: false
+after setting property
+    value of prop: 99
+    is prop enumerable: true
+    prop iterated over
+after making property not-enumerable
+    value of prop: 99
+    is prop enumerable: false
+after re-setting property
+    value of prop: 99
+    is prop enumerable: false
+after re-setting property (2)
+    value of prop: 89
+    is prop enumerable: false
+after deleting property
+    value of prop: undefined
+    is prop enumerable: false
+after re-setting property (3)
+    value of prop: 12
+    is prop enumerable: true
+    prop iterated over

tests/tests/swfs/avm2/property_is_enumerable_reset/test.swf

@@ -0,0 +1 @@
+num_frames = 1