"""
Unit tests for extraction_detect_symmetry (TASK-044-3)

Tests the ExtractionHandler.detect_symmetry method which
detects symmetry planes in mesh geometry.
"""

import sys
from unittest.mock import MagicMock

import pytest
from blender_addon.application.handlers.extraction import ExtractionHandler


class TestDetectSymmetry:
    def setup_method(self):
        self.mock_bpy = sys.modules["bpy"]
        self.handler = ExtractionHandler()

        # Setup test mesh object
        self.cube = MagicMock()
        self.cube.name = "Cube"
        self.cube.type = "MESH"
        self.cube.data = MagicMock()

        def get_object(name):
            if name == "Cube":
                return self.cube
            return None

        self.mock_bpy.data.objects = MagicMock()
        self.mock_bpy.data.objects.__contains__ = lambda s, name: name == "Cube"
        self.mock_bpy.data.objects.__getitem__ = get_object

    def test_detect_symmetry_object_not_found(self):
        """Test error when object doesn't exist."""
        with pytest.raises(ValueError, match="not found"):
            self.handler.detect_symmetry("NonExistent")

    def test_detect_symmetry_not_mesh(self):
        """Test error when object is not a mesh."""
        camera = MagicMock()
        camera.name = "Camera"
        camera.type = "CAMERA"

        self.mock_bpy.data.objects.__contains__ = lambda s, name: name in ["Cube", "Camera"]
        self.mock_bpy.data.objects.__getitem__ = lambda s, name: camera if name == "Camera" else self.cube

        with pytest.raises(ValueError, match="not a mesh"):
            self.handler.detect_symmetry("Camera")


class TestSymmetryTolerance:
    """Test symmetry detection with different tolerance values."""

    def setup_method(self):
        self.handler = ExtractionHandler()

    def test_tolerance_parameter(self):
        """Test that tolerance parameter affects symmetry detection."""
        # Default tolerance is 0.001
        # Higher tolerance = more lenient matching
        assert True  # Placeholder - full test requires bmesh/KDTree mocking
