feat: Add pytest warnings-as-errors configuration similar to PyAirbyte

pytest.ini

@@ -5,7 +5,43 @@ log_cli_format = %(asctime)s [%(levelname)8s] %(message)s (%(filename)s:%(lineno
 log_cli_date_format=%Y-%m-%d %H:%M:%S
 addopts = --junit-xml=build/test-results/pytest-results.xml
 filterwarnings =
-    ignore::airbyte_cdk.sources.source.ExperimentalClassWarning
+    # Treat python warnings as errors in pytest (following PyAirbyte pattern)
+    error
+    # Ignore these specific warnings that are expected/acceptable:
+
+    # CDK experimental features - already in use, safe to ignore
+    # Occurs in: airbyte_cdk/sources/declarative/resolvers/config_components_resolver.py:46
+    ignore:This class is experimental. Use at your own risk.
+
+    # IncrementalMixin deprecation warnings - deprecated as of CDK v0.87.0 in favor of CheckpointMixin
+    # Occurs in: airbyte_cdk/sources/file_based/stream/default_file_based_stream.py:43
+    # Occurs in: unit_tests/sources/mock_server_tests/mock_source_fixture.py:65
+    ignore:Deprecated as of CDK version 0.87.0. Deprecated in favor of the `CheckpointMixin`:DeprecationWarning
+
+    # jsonschema import deprecation - Validator should be imported from jsonschema.protocols instead
+    # Occurs in: airbyte_cdk/sources/utils/transform.py:23
+    ignore:Importing Validator directly from the jsonschema package is deprecated:DeprecationWarning:airbyte_cdk.sources.utils.transform
+
+    # Python logging deprecation - logger.warn() method deprecated in favor of logger.warning()
+    # Occurs in: unit_tests/test_logger.py:81 (test intentionally uses deprecated method)
+    ignore:The 'warn' method is deprecated, use 'warning' instead:DeprecationWarning
+
+    # HttpRequester field deprecation warnings - path and url_base fields deprecated in favor of url field
+    # Occurs during connector builder test execution
+    ignore:Component type.*HttpRequester.*Field.*is deprecated:DeprecationWarning
+
+    # Unknown pytest markers - markers used in tests but not declared in pytest.ini
+    # Occurs in: various test files using image_tests and other custom markers
+    ignore::pytest.PytestUnknownMarkWarning
+
+    # Pytest infrastructure warnings - test framework related, safe to ignore
+    # PytestUnraisableExceptionWarning occurs when tests have unclosed resources (like file handles)
+    # Occurs in: unit_tests/destinations/test_destination.py::TestRun::test_run_write and similar tests
+    ignore::pytest.PytestUnraisableExceptionWarning
+
+    # PluggyTeardownRaisedWarning occurs during pytest plugin teardown processes
+    # Occurs during test cleanup phases, related to pytest plugin infrastructure
+    ignore::pluggy.PluggyTeardownRaisedWarning
 markers =
     slow: mark tests as slow
     asyncio: mark test as asyncio