adding an example with more than one replacement

Author: Greenwood

json-path/src/test/java/com/jayway/jsonpath/internal/function/Issue191.java

@@ -35,6 +35,14 @@ public void testResultSetNumericComputationTail() {
                 Long.valueOf(35679716813L), value);
     }
 
+    @Test
+    public void testResultSetNumericComputationRecursiveReplacement() {
+        InputStream stream = ClassLoader.getSystemResourceAsStream("issue_191.json");
+        Long value = JsonPath.parse(stream).read("$.max($..timestamp.avg(), $..timestamp.stddev())", Long.class);
+        assertEquals("Expected the max function to consume the aggregation parameters and calculate the max over the result set",
+                Long.valueOf(1427188672L), value);
+    }
+
     @Test
     public void testMultipleResultSetSums() {
         InputStream stream = ClassLoader.getSystemResourceAsStream("issue_191.json");