FAILED tests/test_basic_functionality.py::TestBasicFunctionality::test_customer_context_integration
FAILED tests/test_client.py::TestTrackedAnthropicMessagesCreate::test_messages_create_with_tracking_success
FAILED tests/test_context.py::test_effective_customer_id_priority - Assertion...
FAILED tests/test_proxy.py::TestAnthropicTrackingMethods::test_track_messages_create_success
FAILED tests/test_proxy.py::TestAnthropicTrackingMethods::test_track_messages_create_no_customer_id
FAILED tests/test_proxy.py::TestAnthropicTrackingMethods::test_track_messages_create_no_usage_info
FAILED tests/test_tracker.py::TestUsageTracker::test_initialization_default_values
