Test to validate custom JSON decoders (#1681)

dev_requirements.txt

@@ -6,4 +6,5 @@ tox-docker==3.1.0
 invoke==1.6.0
 pytest-cov>=3.0.0
 vulture>=2.3.0
+ujson>=4.2.0
 wheel>=0.30.0

tests/test_json.py

@@ -1003,6 +1003,7 @@ def test_debug_dollar(client):
     assert client.json().debug("MEMORY", "non_existing_doc", "$..a") == []
 
 
+@pytest.mark.redismod
 def test_resp_dollar(client):
 
     data = {
@@ -1149,6 +1150,7 @@ def test_resp_dollar(client):
     assert client.json().resp("non_existing_doc", "$..a") is None
 
 
+@pytest.mark.redismod
 def test_arrindex_dollar(client):
 
     client.json().set(
@@ -1397,3 +1399,18 @@ def test_decoders_and_unstring():
     assert decode_list(b"45.55") == 45.55
     assert decode_list("45.55") == 45.55
     assert decode_list(['hello', b'world']) == ['hello', 'world']
+
+
+@pytest.mark.redismod
+def test_custom_decoder(client):
+    import ujson
+    import json
+
+    cj = client.json(encoder=ujson, decoder=ujson)
+    assert cj.set("foo", Path.rootPath(), "bar")
+    assert "bar" == cj.get("foo")
+    assert cj.get("baz") is None
+    assert 1 == cj.delete("foo")
+    assert client.exists("foo") == 0
+    assert not isinstance(cj.__encoder__, json.JSONEncoder)
+    assert not isinstance(cj.__decoder__, json.JSONDecoder)