"""
#exonware/xwnode/tests/3.advance/test_performance.py
Performance Excellence Tests - Priority #4
Validates performance benchmarks, memory usage, and scalability.
Company: eXonware.com
Author: eXonware Backend Team
Email: connect@exonware.com
Version: 0.0.1
Generation Date: 11-Oct-2025
"""

import pytest
import time
import sys
from exonware.xwnode import XWNode, XWEdge
@pytest.mark.xwnode_advance
@pytest.mark.xwnode_performance

class TestPerformanceExcellence:
    """Performance excellence validation - Priority #4."""

    def test_response_time_benchmarks(self):
        """Validate response time benchmarks."""
        from tests.scale_config import MEDIUM_SIZE
        start = time.time()
        for i in range(MEDIUM_SIZE):
            node = XWNode({"key": i, "value": f"data_{i}"})
        elapsed = time.time() - start
        assert elapsed < 5.0, f"Node creation too slow: {elapsed:.3f}s for {MEDIUM_SIZE} nodes"

    def test_memory_usage(self):
        """Validate memory usage and leak prevention."""
        import gc
        from tests.scale_config import LARGE_SIZE
        large_data = {f"key_{i}": f"value_{i}" * 10 for i in range(LARGE_SIZE)}
        # Measure memory before
        gc.collect()
        before_size = sys.getsizeof(large_data)
        # Create node
        node = XWNode(large_data)
        # Clear local reference
        del large_data
        gc.collect()
        # Verify data integrity
        result = node.get_value("key_0")
        assert result is not None

    def test_scalability(self):
        """Validate scalability under load."""
        from tests.scale_config import scaled
        for size in [scaled(100), scaled(1000), scaled(10000)]:
            size = max(10, size)
            data = {f"key_{i}": f"value_{i}" for i in range(size)}
            start = time.time()
            node = XWNode(data)
            elapsed = time.time() - start
            # Should scale reasonably (linear or better)
            assert elapsed < size / 100, f"Scalability issue: {elapsed:.3f}s for {size} items"

    def test_async_performance(self):
        """Validate async/await performance."""
        import asyncio
        async def async_operation():
            node = XWNode({"key": "value"})
            return node.get_value("key")
        start = time.time()
        result = asyncio.run(async_operation())
        elapsed = time.time() - start
        # Async operation should complete quickly
        assert elapsed < 0.1, f"Async operation too slow: {elapsed:.3f}s"
        assert result == "value"

    def test_caching_effectiveness(self):
        """Validate caching mechanisms."""
        node = XWNode({"key": "value", "nested": {"deep": "data"}})
        # First access (cache miss)
        start = time.time()
        result1 = node.get_value("nested.deep")
        first_access = time.time() - start
        # Second access (cache hit)
        start = time.time()
        result2 = node.get_value("nested.deep")
        second_access = time.time() - start
        # Cache hit should be faster (or at least not slower)
        assert result1 == result2 == "data"
        # Note: Cache effectiveness depends on implementation

    def test_resource_management(self):
        """Validate efficient resource management."""
        import gc
        from tests.scale_config import scaled
        for i in range(scaled(100)):
            node = XWNode({"id": i, "data": f"value_{i}"})
            del node
        # Force garbage collection
        gc.collect()
        # Should not have excessive memory growth
        # This is a basic check - more sophisticated tests would track memory over time
        assert True  # Pass if no exceptions
