test: Add pytest-rerunfailures for integration tests

Add `pytest-rerunfailures` as a dev dependency and configure all integration tests to rerun up to 3 times on failure automatically. This helps handle occasional platform-related instabilities without manual test reruns.

Uses `pytest_collection_modifyitems` hook to apply the flaky marker to all integration tests, avoiding the need to decorate each test individually.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: vdusek

pyproject.toml

@@ -72,6 +72,7 @@ dev = [
     "pytest-asyncio<2.0.0",
     "pytest-cov<8.0.0",
     "pytest-httpserver<2.0.0",
+    "pytest-rerunfailures<17.0.0",
     "pytest-timeout<3.0.0",
     "pytest-xdist<4.0.0",
     "pytest<9.0.0",

tests/integration/conftest.py

@@ -16,6 +16,9 @@
     from collections.abc import Callable
     from pathlib import Path
 
+# Rerun all integration tests up to 3 times on failure, as the platform can be unstable.
+_INTEGRATION_TEST_RERUNS = 3
+
 _TOKEN_ENV_VAR = 'APIFY_TEST_USER_API_TOKEN'
 _API_URL_ENV_VAR = 'APIFY_INTEGRATION_TESTS_API_URL'
 
@@ -89,3 +92,10 @@ def _isolate_test_environment(prepare_test_env: Callable[[], None]) -> None:
         prepare_test_env: Fixture to prepare the environment before each test.
     """
     prepare_test_env()
+
+
+def pytest_collection_modifyitems(items: list[pytest.Item]) -> None:
+    """Add flaky marker with reruns to all integration tests."""
+    flaky_marker = pytest.mark.flaky(reruns=_INTEGRATION_TEST_RERUNS)
+    for item in items:
+        item.add_marker(flaky_marker)