Merge branch 'feature/add_function_document-uri0' of github.com:dizzzz/exist into feature/add_function_document-uri0

* 'feature/add_function_document-uri0' of github.com:dizzzz/exist:
  Update fn.xql
  Update fn.xql

Author: dizzzz

exist-core/src/test/xquery/fn.xql

@@ -160,4 +160,12 @@ declare
     %test:assertEmpty
 function fnt:document-uri1_empty() {
      document-uri(root(collection('/db/fn-test')//bookies))
-};
+};
+
+declare
+    %test:assertTrue
+function fnt:fn-document-uri-32() {
+     let $uri := "/db/fn-test/test.xml"
+     return
+         fn:contains(fn:doc($uri)/document-uri(), $uri)
+};