PYTHON-5103 Convert test.test_server_selection_rtt to async (#2122)

Co-authored-by: Noah Stapp <noah@noahstapp.com>

test/asynchronous/test_server_selection_rtt.py

@@ -0,0 +1,77 @@
+# Copyright 2015 MongoDB, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Test the topology module."""
+from __future__ import annotations
+
+import json
+import os
+import sys
+from pathlib import Path
+
+sys.path[0:0] = [""]
+
+from test import unittest
+from test.asynchronous import AsyncPyMongoTestCase
+
+from pymongo.read_preferences import MovingAverage
+
+_IS_SYNC = False
+
+# Location of JSON test specifications.
+if _IS_SYNC:
+    TEST_PATH = os.path.join(Path(__file__).resolve().parent, "server_selection/rtt")
+else:
+    TEST_PATH = os.path.join(Path(__file__).resolve().parent.parent, "server_selection/rtt")
+
+
+class TestAllScenarios(AsyncPyMongoTestCase):
+    pass
+
+
+def create_test(scenario_def):
+    def run_scenario(self):
+        moving_average = MovingAverage()
+
+        if scenario_def["avg_rtt_ms"] != "NULL":
+            moving_average.add_sample(scenario_def["avg_rtt_ms"])
+
+        if scenario_def["new_rtt_ms"] != "NULL":
+            moving_average.add_sample(scenario_def["new_rtt_ms"])
+
+        self.assertAlmostEqual(moving_average.get(), scenario_def["new_avg_rtt"])
+
+    return run_scenario
+
+
+def create_tests():
+    for dirpath, _, filenames in os.walk(TEST_PATH):
+        dirname = os.path.split(dirpath)[-1]
+
+        for filename in filenames:
+            with open(os.path.join(dirpath, filename)) as scenario_stream:
+                scenario_def = json.load(scenario_stream)
+
+            # Construct test from scenario.
+            new_test = create_test(scenario_def)
+            test_name = f"test_{dirname}_{os.path.splitext(filename)[0]}"
+
+            new_test.__name__ = test_name
+            setattr(TestAllScenarios, new_test.__name__, new_test)
+
+
+create_tests()
+
+if __name__ == "__main__":
+    unittest.main()

test/test_server_selection_rtt.py

@@ -18,18 +18,24 @@ from __future__ import annotations
 import json
 import os
 import sys
+from pathlib import Path
 
 sys.path[0:0] = [""]
 
-from test import unittest
+from test import PyMongoTestCase, unittest
 
 from pymongo.read_preferences import MovingAverage
 
+_IS_SYNC = True
+
 # Location of JSON test specifications.
-_TEST_PATH = os.path.join(os.path.dirname(os.path.realpath(__file__)), "server_selection/rtt")
+if _IS_SYNC:
+    TEST_PATH = os.path.join(Path(__file__).resolve().parent, "server_selection/rtt")
+else:
+    TEST_PATH = os.path.join(Path(__file__).resolve().parent.parent, "server_selection/rtt")
 
 
-class TestAllScenarios(unittest.TestCase):
+class TestAllScenarios(PyMongoTestCase):
     pass
 
 
@@ -49,7 +55,7 @@ def create_test(scenario_def):
 
 
 def create_tests():
-    for dirpath, _, filenames in os.walk(_TEST_PATH):
+    for dirpath, _, filenames in os.walk(TEST_PATH):
         dirname = os.path.split(dirpath)[-1]
 
         for filename in filenames:

tools/synchro.py

@@ -228,6 +228,7 @@ converted_tests = [
     "test_retryable_writes_unified.py",
     "test_run_command.py",
     "test_session.py",
+    "test_server_selection_rtt.py",
     "test_sessions_unified.py",
     "test_srv_polling.py",
     "test_ssl.py",