tests: Add avm2/filereference_save_and_load test

This test ensures that the error 2037 is thrown
when load is called after save.

It's currently a known failure as Ruffle is not as strict as FP
regarding throwing the error 2037.

tests/tests/swfs/avm2/filereference_save_and_load/Test.as

@@ -0,0 +1,69 @@
+package {
+import flash.display.Sprite;
+public class Test extends Sprite { }
+}
+
+import flash.net.FileReference;
+import flash.net.FileFilter;
+import flash.events.Event;
+import flash.events.ProgressEvent;
+import flash.utils.setTimeout;
+
+var file = new FileReference();
+
+function dump(file) {
+    try {
+        trace("file.name: " + file.name);
+    } catch (e) {
+        trace("file.name threw: " + e);
+    }
+
+    try {
+        trace("file.size: " + file.size);
+    } catch (e) {
+        trace("file.size threw: " + e);
+    }
+
+    trace("file.data: " + file.data);
+    trace("");
+}
+
+function onopen(e) {
+    trace("open event");
+    dump(e.target);
+}
+
+function onprogress(e) {
+    trace("progress event");
+    trace(e.bytesLoaded + " / " + e.bytesTotal);
+    dump(e.target);
+}
+
+function oncomplete(e) {
+    trace("complete event");
+    dump(e.target);
+
+    try {
+        file.load();
+    } catch(e) {
+        trace("Error: " + e);
+    }
+}
+
+function onselect(e) {
+    trace("select event");
+    dump(e.target);
+}
+
+function oncancel(e) {
+    trace("cancel event");
+    dump(e.target);
+}
+
+file.addEventListener(Event.OPEN, onopen);
+file.addEventListener(ProgressEvent.PROGRESS, onprogress);
+file.addEventListener(Event.COMPLETE, oncomplete);
+file.addEventListener(Event.SELECT, onselect);
+file.addEventListener(Event.CANCEL, oncancel);
+
+file.save("Hello, World!", "debug-success.txt");

tests/tests/swfs/avm2/filereference_save_and_load/output.txt

@@ -0,0 +1,22 @@
+select event
+file.name: debug-success.txt
+file.size: 0
+file.data: null
+
+open event
+file.name: debug-success.txt
+file.size: 0
+file.data: null
+
+progress event
+13 / 13
+file.name: debug-success.txt
+file.size: 0
+file.data: null
+
+complete event
+file.name: debug-success.txt
+file.size: 13
+file.data: null
+
+Error: Error: Error #2037: Functions called in incorrect sequence, or earlier call was unsuccessful.

tests/tests/swfs/avm2/filereference_save_and_load/test.toml

@@ -0,0 +1,7 @@
+num_ticks = 1
+
+# FIXME FP is more strict regarding the error 2037
+known_failure = true
+
+# this test currently overflows the stack
+ignore = true