chore: import upstream snapshot with attribution

Server/tests/conftest.py

@@ -0,0 +1,87 @@
+"""Pytest configuration for unity-mcp tests."""
+import logging
+import os
+import sys
+from pathlib import Path
+import pytest
+
+logger = logging.getLogger(__name__)
+
+# Add src directory to Python path so tests can import cli, transport, etc.
+src_path = Path(__file__).parent.parent / "src"
+if str(src_path) not in sys.path:
+    sys.path.insert(0, str(src_path))
+
+
+def _safe_reset_telemetry() -> None:
+    """Safely reset telemetry, distinguishing import errors from reset failures."""
+    try:
+        from core.telemetry import reset_telemetry
+    except ImportError:
+        # Telemetry module not available - this is normal if telemetry not used
+        return
+    try:
+        reset_telemetry()
+    except Exception as exc:
+        logger.debug("Telemetry reset failed (may indicate cleanup needed)", exc_info=exc)
+
+
+@pytest.fixture(scope="module", autouse=True)
+def cleanup_telemetry():
+    """Clean up telemetry singleton after each test module to prevent state pollution."""
+    yield
+    _safe_reset_telemetry()
+
+
+@pytest.fixture(scope="class")
+def fresh_telemetry():
+    """Reset telemetry before test class runs (for tests that need clean state)."""
+    _safe_reset_telemetry()
+    yield
+
+
+def pytest_collection_modifyitems(session, config, items):  # noqa: ARG001
+    """Reorder tests so characterization tests run before integration tests.
+
+    This prevents integration tests from initializing the telemetry singleton
+    before characterization tests can mock it.
+    """
+    # Separate integration tests from other tests
+    integration_tests = []
+    other_tests = []
+
+    for item in items:
+        # Check if test is in integration/ directory
+        if "integration" in str(item.path):
+            integration_tests.append(item)
+        else:
+            other_tests.append(item)
+
+    # Reorder: characterization/unit tests first, then integration tests
+    items[:] = other_tests + integration_tests
+
+
+@pytest.fixture(autouse=True)
+def restore_global_config():
+    """Restore global config/env mutations between tests."""
+    from core.config import config as global_config
+
+    prior_env = os.environ.get("UNITY_MCP_TRANSPORT")
+    prior = {
+        "transport_mode": global_config.transport_mode,
+        "http_remote_hosted": global_config.http_remote_hosted,
+        "api_key_validation_url": global_config.api_key_validation_url,
+        "api_key_login_url": global_config.api_key_login_url,
+        "api_key_cache_ttl": global_config.api_key_cache_ttl,
+        "api_key_service_token_header": global_config.api_key_service_token_header,
+        "api_key_service_token": global_config.api_key_service_token,
+    }
+    yield
+
+    if prior_env is None:
+        os.environ.pop("UNITY_MCP_TRANSPORT", None)
+    else:
+        os.environ["UNITY_MCP_TRANSPORT"] = prior_env
+
+    for key, value in prior.items():
+        setattr(global_config, key, value)