tests: Add test for virtual properties on prototype

core/tests/regression_tests.rs

@@ -217,6 +217,7 @@ swf_tests! {
     (error, "avm1/error", 1),
     (color_transform, "avm1/color_transform", 1),
     (with, "avm1/with", 1),
+    (prototype_properties, "avm1/prototype_properties", 1),
 }
 
 // TODO: These tests have some inaccuracies currently, so we use approx_eq to test that numeric values are close enough.

core/tests/swfs/avm1/prototype_properties/output.txt

@@ -0,0 +1,17 @@
+// Foo.prototype.hasOwnProperty('prop')
+true
+// Foo.prototype.hasOwnProperty('readOnlyProp')
+true
+
+// foo = new Foo()
+// foo.prop = 10
+// foo.prop
+10
+// foo.hasOwnProperty('prop')
+false
+
+// foo.readOnlyProp = 10
+// foo.readOnlyProp 
+5
+// foo.hasOwnProperty('readOnlyProp')
+false