Add check if node exists in searchInJson #11

src/server/utils/searchInJson.js

@@ -4,6 +4,8 @@ export default function searchInJson(json, query) {
     return _(query.split('.'))
         .drop()
         .reduce((prev, key) => {
-            return prev[key];
+            if (prev && prev[key]) {
+                return prev[key];
+            }
         }, json);
 }

test/server/utils/searchInJson.spec.js

@@ -54,4 +54,18 @@ describe('searchInJson', () => {
             });
         });
     });
+
+    describe('a query that does not match', () => {
+        it('should return undefined if the leaf does not exist', () => {
+            const json = { a: 'va1' };
+            const query = 'json.b';
+            expect(searchInJson(json, query)).toEqual(undefined);
+        });
+
+        it('should return undefined if an internal node does not exist', () => {
+            const json = { a: { b: 'vb1' } };
+            const query = 'json.x.b';
+            expect(searchInJson(json, query)).toEqual(undefined);
+        });
+    });
 });