tests: Add a goto-and-stop test that inspects the children after the goto.

tests/tests/regression_tests.rs

@@ -395,6 +395,7 @@ swf_tests! {
     (as3_movieclip_goto_during_frame_script, "avm2/movieclip_goto_during_frame_script", 1),
     (as3_movieclip_gotoandplay, "avm2/movieclip_gotoandplay", 5),
     (as3_movieclip_gotoandstop, "avm2/movieclip_gotoandstop", 5),
+    (as3_movieclip_gotoandstop_children, "avm2/movieclip_gotoandstop_children", 1),
     (as3_movieclip_gotoandstop_queueing, "avm2/movieclip_gotoandstop_queueing", 2),
     (as3_movieclip_next_frame, "avm2/movieclip_next_frame", 5),
     (as3_movieclip_next_scene, "avm2/movieclip_next_scene", 5),

tests/tests/swfs/avm2/movieclip_gotoandstop_children/MainDocument.as

@@ -0,0 +1,17 @@
+package {
+	import flash.display.MovieClip;
+
+	public class MainDocument extends MovieClip {
+		public function MainDocument() {
+			trace("/// this.child.gotoAndStop(2)");
+			this.child.gotoAndStop(2);
+
+			trace("/// (Grandchildren of this.child...)");
+			for (var i = 0; i < this.child.numChildren; i += 1) {
+				trace("Child: " + this.child.getChildAt(i).name);
+			}
+
+			this.stop();
+		}
+	}
+}

tests/tests/swfs/avm2/movieclip_gotoandstop_children/output.txt

@@ -0,0 +1,4 @@
+/// this.child.gotoAndStop(2)
+/// (Grandchildren of this.child...)
+Child: grandchild_a
+Child: grandchild_b