- Add test case for issue JSONPath-Plus#126

- Docs: Link to XPath 2.0 tester

README.md

@@ -301,7 +301,9 @@ and the following XML representation:
 
 Please note that the XPath examples below do not distinguish between
 retrieving elements and their text content (except where useful for
-comparisons or to prevent ambiguity).
+comparisons or to prevent ambiguity). Note: to test the XPath examples
+(including 2.0 ones), [this demo](http://videlibri.sourceforge.net/cgi-bin/xidelcgi)
+may be helpful (set to `xml` or `xml-strict`).
 
 | XPath             | JSONPath               | Result                                | Notes |
 | ----------------- | ---------------------- | ------------------------------------- | ----- |

test/test.callback.js

@@ -102,4 +102,56 @@ describe('JSONPath - Callback', function () {
             assert.deepEqual(result[2][prop], expected[2][prop]);
         });
     });
+
+    // https://github.com/s3u/JSONPath/issues/126
+    it('Using callback to set', function () {
+        const expected = {
+            age: 30,
+            email: '[email protected]',
+            'something_deeper': {
+                abc: 1,
+                quantity: 11
+            },
+            first_name: 'John',
+            last_name: 'Doe'
+        };
+        const givenPerson = {
+            age: 30,
+            email: '[email protected]',
+            // let's add first_name, last_name fields
+            'something_deeper': {
+                abc: 1
+                // let's add quantity here
+            }
+        };
+
+        // defined an object with "json_path":"value" format,
+        // made sure it is not a deep object.
+        const obj1 = {
+            $: {
+                'first_name': 'John',
+                'last_name': 'Doe'
+            },
+            '$.something_deeper': {
+                quantity: 11
+            }
+        };
+
+        // eslint-disable-next-line compat/compat
+        Object.entries(obj1).forEach(([path, valuesToSet]) => {
+            jsonpath({
+                json: givenPerson,
+                path,
+                wrap: false,
+                callback (obj) {
+                    // eslint-disable-next-line compat/compat
+                    Object.entries(valuesToSet).forEach(([key, val]) => {
+                        obj[key] = val;
+                    });
+                }
+            });
+        });
+        const result = givenPerson;
+        assert.deepEqual(result, expected);
+    });
 });