Add a test for JSON Patch op addap

Author: jg-rp

jsonpath/patch.py

@@ -124,7 +124,7 @@ class OpAddAp(OpAdd):
     """A non-standard add operation that appends to arrays/lists .
 
     This is like _OpAdd_, but assumes an index of "-" if the path can not
-    be resolved.
+    be resolved rather than raising a JSONPatchError.
 
     **New in version 1.2.0**
     """

tests/test_json_patch.py

@@ -262,3 +262,9 @@ def test_asdict() -> None:
 
     patch = JSONPatch(patch_doc)
     assert patch.asdicts() == patch_doc
+
+
+def test_non_standard_addap_op() -> None:
+    # Index 7 is out of range and would raises a JSONPatchError with the `add` op.
+    patch = JSONPatch().addap(path="/foo/7", value=99)
+    assert patch.apply({"foo": [1, 2, 3]}) == {"foo": [1, 2, 3, 99]}