Add regression test for `idMap`.

core/tests/regression_tests.rs

@@ -121,6 +121,7 @@ swf_tests! {
     (xml_insert_before, "avm1/xml_insert_before", 1),
     (xml_to_string, "avm1/xml_to_string", 1),
     (xml_to_string_comment, "avm1/xml_to_string_comment", 1),
+    (xml_idmap, "avm1/xml_idmap", 1),
     (xml_inspect_doctype, "avm1/xml_inspect_doctype", 1),
     #[ignore] (xml_inspect_xmldecl, "avm1/xml_inspect_xmldecl", 1),
     (xml_inspect_createmethods, "avm1/xml_inspect_createmethods", 1),

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

@@ -0,0 +1,21 @@
+true
+true
+idmap has test
+idmap has test2
+Manually added new node via appendChild
+Checking old copy of IDMAP...
+idmap has test
+idmap has test2
+Checking new copy of IDMAP...
+idmap has test
+idmap has test2
+Parsed another node with parseXML...
+idmap has test
+idmap has test2
+idmap has test4
+Checking for IDMAP expandos...
+idmap has test
+idmap has test124
+idmap has test2
+idmap has test4
+trace