update json().arrindex() default values (#2611)

* update json().arrindex() default values

* add unit test

* fix falsy checks

* more unit tests

* add asyncio tests

* fix lint line length

---------

Co-authored-by: Alex Schmitz <aschmitz@box.com>

3 files changed, 23 insertions, 8 deletions

diff --git a/redis/commands/json/commands.py b/redis/commands/json/commands.py
index 7fd4039..c02c47a 100644
--- a/redis/commands/json/commands.py
+++ b/redis/commands/json/commands.py
@@ -31,8 +31,8 @@ class JSONCommands:
         name: str,
         path: str,
         scalar: int,
-        start: Optional[int] = 0,
-        stop: Optional[int] = -1,
+        start: Optional[int] = None,
+        stop: Optional[int] = None,
     ) -> List[Union[int, None]]:
         """
         Return the index of ``scalar`` in the JSON array under ``path`` at key
@@ -43,9 +43,13 @@ class JSONCommands:
 
         For more information see `JSON.ARRINDEX <https://redis.io/commands/json.arrindex>`_.
         """  # noqa
-        return self.execute_command(
-            "JSON.ARRINDEX", name, str(path), self._encode(scalar), start, stop
-        )
+        pieces = [name, str(path), self._encode(scalar)]
+        if start is not None:
+            pieces.append(start)
+            if stop is not None:
+                pieces.append(stop)
+
+        return self.execute_command("JSON.ARRINDEX", *pieces)
 
     def arrinsert(
         self, name: str, path: str, index: int, *args: List[JsonType]
diff --git a/tests/test_asyncio/test_json.py b/tests/test_asyncio/test_json.py
index b8854d2..fc530c6 100644
--- a/tests/test_asyncio/test_json.py
+++ b/tests/test_asyncio/test_json.py
@@ -145,9 +145,15 @@ async def test_arrappend(modclient: redis.Redis):
 
 @pytest.mark.redismod
 async def test_arrindex(modclient: redis.Redis):
-    await modclient.json().set("arr", Path.root_path(), [0, 1, 2, 3, 4])
-    assert 1 == await modclient.json().arrindex("arr", Path.root_path(), 1)
-    assert -1 == await modclient.json().arrindex("arr", Path.root_path(), 1, 2)
+    r_path = Path.root_path()
+    await modclient.json().set("arr", r_path, [0, 1, 2, 3, 4])
+    assert 1 == await modclient.json().arrindex("arr", r_path, 1)
+    assert -1 == await modclient.json().arrindex("arr", r_path, 1, 2)
+    assert 4 == await modclient.json().arrindex("arr", r_path, 4)
+    assert 4 == await modclient.json().arrindex("arr", r_path, 4, start=0)
+    assert 4 == await modclient.json().arrindex("arr", r_path, 4, start=0, stop=5000)
+    assert -1 == await modclient.json().arrindex("arr", r_path, 4, start=0, stop=-1)
+    assert -1 == await modclient.json().arrindex("arr", r_path, 4, start=1, stop=3)
 
 
 @pytest.mark.redismod
diff --git a/tests/test_json.py b/tests/test_json.py
index a776e9e..8e8da05 100644
--- a/tests/test_json.py
+++ b/tests/test_json.py
@@ -166,6 +166,11 @@ def test_arrindex(client):
     client.json().set("arr", Path.root_path(), [0, 1, 2, 3, 4])
     assert 1 == client.json().arrindex("arr", Path.root_path(), 1)
     assert -1 == client.json().arrindex("arr", Path.root_path(), 1, 2)
+    assert 4 == client.json().arrindex("arr", Path.root_path(), 4)
+    assert 4 == client.json().arrindex("arr", Path.root_path(), 4, start=0)
+    assert 4 == client.json().arrindex("arr", Path.root_path(), 4, start=0, stop=5000)
+    assert -1 == client.json().arrindex("arr", Path.root_path(), 4, start=0, stop=-1)
+    assert -1 == client.json().arrindex("arr", Path.root_path(), 4, start=1, stop=3)
 
 
 @pytest.mark.redismod