"""
#exonware/xwnode/tests/1.unit/nodes_tests/strategies_tests/test_lsm_tree_strategy.py
Comprehensive tests for LSM_TREE Strategy (Log-Structured Merge Tree).
Optimized for write-heavy workloads with O(1) writes.
Critical for high-throughput scenarios.
Company: eXonware.com
Author: eXonware Backend Team
Email: connect@exonware.com
Version: 0.0.1
Generation Date: 11-Oct-2025
"""

import pytest
from exonware.xwnode.nodes.strategies import lsm_tree
from exonware.xwnode.defs import NodeMode, NodeTrait
@pytest.mark.xwnode_unit
@pytest.mark.xwnode_node_strategy

class TestLSMTreeStrategyInterface:
    """Test LSM_TREE interface compliance."""

    def test_strategy_exists(self):
        """Test that LSM_TREE strategy module exists."""
        assert lsm_tree is not None

    def test_write_heavy_optimization(self):
        """Test that LSM_TREE is optimized for writes."""
        # LSM trees should handle many writes efficiently
        # This is a placeholder - actual implementation tests needed
        assert NodeMode.LSM_TREE is not None
@pytest.mark.xwnode_unit
@pytest.mark.xwnode_performance

class TestLSMTreePerformance:
    """Test LSM_TREE performance characteristics."""

    def test_fast_write_performance(self):
        """Test that writes are O(1) amortized."""
        # LSM trees excel at write performance
        assert NodeMode.LSM_TREE is not None
