tests.json: Test case sensitivity

Author: FSMaxB

tests.json

@@ -418,6 +418,12 @@
     { "comment": "Removing nonexistent index",
       "doc": ["foo", "bar"],
       "patch": [{"op": "remove", "path": "/2"}],
-      "error": "removing a nonexistent index should fail" }
+      "error": "removing a nonexistent index should fail" },
+
+    { "comment": "Patch with different capitalisation than doc",
+       "doc": {"foo":"bar"},
+       "patch": [{"op": "add", "path": "/FOO", "value": "BAR"}],
+       "expected": {"foo": "bar", "FOO": "BAR"}
+    }
 
 ]