tests: Add test for parent-child execution order

(currently fails)

core/tests/regression_tests.rs

@@ -32,6 +32,7 @@ macro_rules! swf_tests {
 // The test folder is a relative to core/tests/swfs
 // Inside the folder is expected to be "test.swf" and "output.txt" with the correct output.
 swf_tests! {
+    (execution_order, "avm1/execution_order", 3),
     (single_frame, "avm1/single_frame", 2),
     (looping, "avm1/looping", 6),
     (goto_advance1, "avm1/goto_advance1", 10),

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

@@ -0,0 +1,5 @@
+root 1
+child 1
+child 2
+root 2
+root 3