Adding vector search tests for types int8/uint8 (redis#3525)

Author: petyaslavova

tests/test_search.py

@@ -2856,6 +2856,64 @@ def test_vector_search_with_default_dialect(client):
         assert res["total_results"] == 2
 
 
+@pytest.mark.redismod
+@skip_if_server_version_lt("7.9.0")
+def test_vector_search_with_int8_type(client):
+    client.ft().create_index(
+        (VectorField("v", "FLAT", {"TYPE": "INT8", "DIM": 2, "DISTANCE_METRIC": "L2"}),)
+    )
+
+    a = [1.5, 10]
+    b = [123, 100]
+    c = [1, 1]
+
+    client.hset("a", "v", np.array(a, dtype=np.int8).tobytes())
+    client.hset("b", "v", np.array(b, dtype=np.int8).tobytes())
+    client.hset("c", "v", np.array(c, dtype=np.int8).tobytes())
+
+    query = Query("*=>[KNN 2 @v $vec as score]")
+    query_params = {"vec": np.array(a, dtype=np.int8).tobytes()}
+
+    assert 2 in query.get_args()
+
+    res = client.ft().search(query, query_params=query_params)
+    if is_resp2_connection(client):
+        assert res.total == 2
+    else:
+        assert res["total_results"] == 2
+
+
+@pytest.mark.redismod
+@skip_if_server_version_lt("7.9.0")
+def test_vector_search_with_uint8_type(client):
+    client.ft().create_index(
+        (
+            VectorField(
+                "v", "FLAT", {"TYPE": "UINT8", "DIM": 2, "DISTANCE_METRIC": "L2"}
+            ),
+        )
+    )
+
+    a = [1.5, 10]
+    b = [123, 100]
+    c = [1, 1]
+
+    client.hset("a", "v", np.array(a, dtype=np.uint8).tobytes())
+    client.hset("b", "v", np.array(b, dtype=np.uint8).tobytes())
+    client.hset("c", "v", np.array(c, dtype=np.uint8).tobytes())
+
+    query = Query("*=>[KNN 2 @v $vec as score]")
+    query_params = {"vec": np.array(a, dtype=np.uint8).tobytes()}
+
+    assert 2 in query.get_args()
+
+    res = client.ft().search(query, query_params=query_params)
+    if is_resp2_connection(client):
+        assert res.total == 2
+    else:
+        assert res["total_results"] == 2
+
+
 @pytest.mark.redismod
 @skip_ifmodversion_lt("2.4.3", "search")
 def test_search_query_with_different_dialects(client):