add test for non-ascii characters
diff --git a/asterix-app/src/test/resources/AQLTS/queries/utf-8.aql b/asterix-app/src/test/resources/AQLTS/queries/utf-8.aql
new file mode 100644
index 0000000..b9c58ea
--- /dev/null
+++ b/asterix-app/src/test/resources/AQLTS/queries/utf-8.aql
@@ -0,0 +1,3 @@
+string-to-codepoint("äöß");
+string-to-codepoint("迎");
+/* currently fails (issue 277) string-to-codepoint("欢")  */