"""
conftest.py - Common fixtures for pytrace tests.
"""
import pytest
from unittest.mock import MagicMock

# Mock objects for NodeIO and TraceContext for isolated testing
@pytest.fixture
def mock_io():
    """Provides a mock NodeIO instance."""
    io = MagicMock()
    # Configure common methods
    io.get_input.return_value = None
    io.get_param.return_value = None
    io.set_output.return_value = None
    io.get_collected_outputs.return_value = {}
    return io

@pytest.fixture
def mock_context():
    """Provides a mock TraceContext instance."""
    context = MagicMock()
    # Configure common methods
    context.log.return_value = None
    return context

@pytest.fixture
def mock_comms_interface():
    """Provides a mock CommsInterface."""
    comms = MagicMock()
    comms.emit_log.return_value = None
    return comms