[refactor] Fix Assert test

Author: gabriele-tomassetti

exist-core/src/test/java/org/exist/xquery/CountExpressionTest.java

@@ -73,8 +73,8 @@ public void countTest() throws RecognitionException, XPathException, TokenStream
         }
 
         // count keyword
-        assertEquals(143, ast.getNextSibling().getFirstChild().getNextSibling().getNextSibling().getType());
+        assertEquals(XQueryParser.LITERAL_count, ast.getNextSibling().getFirstChild().getNextSibling().getNextSibling().getType());
         // rank variable binding
-        assertEquals(20, ast.getNextSibling().getFirstChild().getNextSibling().getNextSibling().getFirstChild().getType());
+        assertEquals(XQueryParser.VARIABLE_BINDING, ast.getNextSibling().getFirstChild().getNextSibling().getNextSibling().getFirstChild().getType());
     }
 }