test.py: fix warnings

changes in this commit:
1)rename class from 'TestContext' to  'Context' so pytest will not consider this class as a test

2)extend pytest filterwarnings list to ignore warnings from external libs

3) use datetime.datetime.now(datetime.UTC) unstead  datetime.datetime.utcnow()

4) use  ResultSet.one() instead  ResultSet[0]

Fixes SCYLLADB-904
Fixes SCYLLADB-908
Related SCYLLADB-902

Closes scylladb/scylladb#28956

test/cluster/auth_cluster/test_startup_response.py

@@ -61,7 +61,7 @@ async def test_startup_no_auth_response(manager: ManagerClient, build_mode):
             session = c.connect()
             logging.info("Performing SELECT(*) FROM system.clients")
             res = session.execute("SELECT COUNT(*) FROM system.clients WHERE connection_stage = 'AUTHENTICATING' ALLOW FILTERING;")
-            count = res[0][0]
+            count = res.one()[0]
             logging.info(f"Observed {count} AUTHENTICATING connections...")
             if count >= num_connections/2:
                 connections_observed = True

test/cluster/object_store/test_backup.py

@@ -858,7 +858,8 @@ async def test_backup_broken_streaming(manager: ManagerClient, s3_storage):
 
         res = cql.execute(f"SELECT COUNT(*) FROM {keyspace}.{table} BYPASS CACHE USING TIMEOUT 600s;")
 
-        assert res[0].count == expected_rows, f"number of rows after restore is incorrect: {res[0].count}"
+        row = res.one()
+        assert row.count == expected_rows, f"number of rows after restore is incorrect: {row.count}"
         log = await manager.server_open_log(server.server_id)
         await log.wait_for("fully contained SSTables to local node from object storage", timeout=10)
         # just make sure we had partially contained sstables as well

test/cluster/test_tablet_repair_scheduler.py

@@ -182,7 +182,7 @@ async def test_tombstone_gc_insert_flush(manager: ManagerClient):
 async def test_tablet_manual_repair_all_tokens(manager: ManagerClient):
     servers, cql, hosts, ks, table_id = await create_table_insert_data_for_repair(manager, fast_stats_refresh=False, disable_flush_cache_time=True)
     token = "all"
-    now = datetime.datetime.utcnow()
+    now = datetime.datetime.now(datetime.UTC).replace(tzinfo=None)
     map1 = await load_tablet_repair_time(cql, hosts[0:1], table_id)
 
     await guarantee_repair_time_next_second()

test/cluster/test_tablets2.py

@@ -1324,7 +1324,7 @@ async def create_cluster(manager: ManagerClient, num_dcs: int, num_racks: int, n
     return servers
 
 
-class TestContext:
+class Context:
     def __init__(self, ks: str, table: str, rf: int, initial_tablets: int, num_keys: int):
         self.ks = ks
         self.table = table
@@ -1347,7 +1347,7 @@ async def create_and_populate_table(manager: ManagerClient, rf: int = 3, initial
         ks = await create_new_test_keyspace(cql, f"WITH replication = {{'class': 'NetworkTopologyStrategy', 'replication_factor': {rf}}} AND tablets = {{'initial': {initial_tablets}}}")
         await cql.run_async(f"CREATE TABLE {ks}.{table} (pk int PRIMARY KEY, c int)")
         await asyncio.gather(*[cql.run_async(f"INSERT INTO {ks}.{table} (pk, c) VALUES ({k}, 1);") for k in range(num_keys)])
-        yield TestContext(ks, table, rf, initial_tablets, num_keys)
+        yield Context(ks, table, rf, initial_tablets, num_keys)
     finally:
         await cql.run_async(f"DROP KEYSPACE {ks}")
 

test/pytest.ini

@@ -53,6 +53,11 @@ filterwarnings =
     ignore::DeprecationWarning:importlib._bootstrap
     ignore::DeprecationWarning:botocore
     ignore::DeprecationWarning:pytest_elk_reporter
+    ignore::sqlalchemy.exc.MovedIn20Warning:kmip.pie.sqltypes
+    ignore::cryptography.utils.CryptographyDeprecationWarning:kmip
+    ignore:TypeDecorator .* will not produce a cache key:sqlalchemy.exc.SAWarning:kmip
+    ignore:Exception in thread[\s\S]*kmip[\s\S]*shutdown:pytest.PytestUnhandledThreadExceptionWarning
+
 
 tmp_path_retention_count = 1
 tmp_path_retention_policy = failed