Add our first AVM2 regression test: hello world!

core/tests/regression_tests.rs

@@ -227,6 +227,7 @@ swf_tests! {
     (set_interval, "avm1/set_interval", 20),
     (context_menu, "avm1/context_menu", 1),
     (context_menu_item, "avm1/context_menu_item", 1),
+    (as3_hello_world, "avm2/hello_world", 1),
 }
 
 // TODO: These tests have some inaccuracies currently, so we use approx_eq to test that numeric values are close enough.

core/tests/swfs/avm2/hello_world/Test.as

@@ -0,0 +1,5 @@
+package {
+	public class Test {}
+}
+
+trace("Hello world!");

core/tests/swfs/avm2/hello_world/output.txt

@@ -0,0 +1 @@
+Hello world!