feat: Define plugin interface specification and add core module tests
Addresses audit findings A001, T002: A001 - Undefined Plugin Interface: - Created src/plugins/interface.py with abstract PluginBase class - Defined AnalysisPlugin, VisualizationPlugin extensions - Documented required methods (register_menu) and metadata attributes - Added version compatibility constants and capability validation T002 - Test Coverage for Core Modules: - tests/unit/test_plugin_manager.py: 18+ tests for plugin lifecycle, SSL context creation (security), version parsing, platform detection - tests/unit/test_flares.py: 25+ tests for color mapping, QC metrics, data validation, parameter defaults, path handling Total test coverage increase: +43 test functions across 3 modules.
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"""
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Unit tests for plugin_manager.py - Plugin system and lifecycle management.
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Covers:
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- PluginManager core functionality
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- SSL context creation (security fix verification)
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- Version parsing logic
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- Platform detection
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- Mock plugin loading tests
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"""
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import os
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import sys
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import pytest
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from unittest.mock import Mock, patch, MagicMock, PropertyMock
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from pathlib import Path
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from io import StringIO
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import tempfile
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import json
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class TestPluginUtilities:
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"""Test utility functions in plugin_manager.py."""
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@patch('plugin_manager.ssl')
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@patch('plugin_manager.certifi')
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def test_get_ssl_context_uses_certifi(self, mock_certifi, mock_ssl):
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"""Verify SSL context is created with certifi CA bundle (security fix)."""
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from plugin_manager import get_ssl_context
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mock_certifi.where.return_value = "/path/to/cacert.pem"
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mock_context = Mock()
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mock_ssl.create_default_context.return_value = mock_context
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result = get_ssl_context()
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# Verify certifi.where() was called
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mock_certifi.where.assert_called_once()
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# Verify SSL context was created with cafile parameter
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mock_ssl.create_default_context.assert_called_once_with(
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cafile="/path/to/cacert.pem"
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)
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assert result == mock_context
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def test_get_current_platform_id_windows(self):
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"""Test platform ID detection for Windows."""
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from plugin_manager import get_current_platform_id
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with patch('plugin_manager.sys.platform', 'win32'):
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with patch('plugin_manager.platform.machine', return_value='AMD64'):
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assert get_current_platform_id() == "win_x64"
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with patch('plugin_manager.sys.platform', 'win32'):
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with patch('plugin_manager.platform.machine', return_value='x86'):
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assert get_current_platform_id() == "win_x86"
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def test_get_current_platform_id_macos(self):
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"""Test platform ID detection for macOS."""
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from plugin_manager import get_current_platform_id
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# Apple Silicon
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with patch('plugin_manager.sys.platform', 'darwin'):
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with patch('plugin_manager.platform.machine', return_value='arm64'):
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assert get_current_platform_id() == "darwin_arm64"
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# Intel Mac
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with patch('plugin_manager.sys.platform', 'darwin'):
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with patch('plugin_manager.platform.machine', return_value='x86_64'):
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assert get_current_platform_id() == "darwin_x64"
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def test_get_current_platform_id_linux(self):
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"""Test platform ID detection for Linux."""
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from plugin_manager import get_current_platform_id
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with patch('plugin_manager.sys.platform', 'linux'):
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with patch('plugin_manager.platform.machine', return_value='x86_64'):
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assert get_current_platform_id() == "linux_x64"
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def test_parse_version_basic(self):
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"""Test version string parsing."""
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from plugin_manager import parse_version
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assert parse_version("1.2.3") == (1, 2, 3)
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assert parse_version("v2.0.0") == (2, 0, 0) # Handle 'v' prefix
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assert parse_version(" 1.0.0 ") == (1, 0, 0) # Handle whitespace
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def test_parse_version_edge_cases(self):
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"""Test version parsing with invalid input."""
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from plugin_manager import parse_version
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# Invalid input should return zero tuple
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assert parse_version("invalid") == (0, 0, 0)
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assert parse_version("") == (0, 0, 0)
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assert parse_version("1.2") == (1, 2, 0) # Missing patch version
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class TestPluginManager:
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"""Test the PluginManager class."""
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@pytest.fixture
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def mock_main_window(self):
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"""Create a mock QMainWindow instance."""
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window = Mock()
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window.menuBar.return_value.actions.return_value = []
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return window
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@pytest.fixture
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def plugin_manager(self, mock_main_window):
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"""Create a PluginManager instance with mocked dependencies."""
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from plugin_manager import PluginManager
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with patch('plugin_manager.get_current_platform_id', return_value='linux_x64'):
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with patch('plugin_manager.parse_version', return_value=(1, 8, 0)):
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manager = PluginManager(mock_main_window)
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manager.plugins_dir = Path(tempfile.mkdtemp())
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return manager
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def test_init_creates_plugins_dir(self, plugin_manager):
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"""Verify plugins directory is created."""
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assert plugin_manager.plugins_dir.exists()
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assert plugin_manager.plugins_dir.is_dir()
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def test_loaded_plugins_is_list(self, plugin_manager):
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"""Verify loaded_plugins starts as empty list."""
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assert isinstance(plugin_manager.loaded_plugins, list)
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assert len(plugin_manager.loaded_plugins) == 0
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@patch('plugin_manager.sys.modules', {})
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def test_import_and_instantiate_valid_plugin(self, plugin_manager):
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"""Test loading a valid plugin module."""
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# Create a temporary plugin file
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plugin_code = '''
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class Plugin:
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name = "Test Plugin"
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def __init__(self, main_window):
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self.main_window = main_window
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def register_menu(self, menu):
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pass
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'''
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with tempfile.NamedTemporaryFile(mode='w', suffix='.py', delete=False) as f:
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f.write(plugin_code)
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plugin_file = Path(f.name)
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try:
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result = plugin_manager._import_and_instantiate("test_plugin", plugin_file)
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assert result is not None
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assert hasattr(result, 'name')
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assert result.name == "Test Plugin"
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finally:
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os.unlink(plugin_file)
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@patch('plugin_manager.sys.modules', {})
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def test_import_and_instantiate_missing_plugin_class(self, plugin_manager):
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"""Test that modules without Plugin class return None."""
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plugin_code = '''
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# No Plugin class defined here
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some_variable = 42
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'''
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with tempfile.NamedTemporaryFile(mode='w', suffix='.py', delete=False) as f:
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f.write(plugin_code)
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plugin_file = Path(f.name)
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try:
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result = plugin_manager._import_and_instantiate("bad_plugin", plugin_file)
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assert result is None # Should return None when no Plugin class
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finally:
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os.unlink(plugin_file)
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def test_unload_plugins_clears_list(self, plugin_manager):
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"""Test that unload_plugins clears the loaded_plugins list."""
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# Add some mock plugins
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plugin_manager.loaded_plugins = [Mock(), Mock()]
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assert len(plugin_manager.loaded_plugins) == 2
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plugin_manager.unload_plugins()
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assert len(plugin_manager.loaded_plugins) == 0
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class TestPluginMetadata:
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"""Test plugin metadata loading from plugin.json."""
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@pytest.fixture
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def mock_main_window(self):
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"""Create a mock QMainWindow instance."""
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window = Mock()
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return window
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def test_metadata_loading_from_json(self, mock_main_window):
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"""Test that plugin.json metadata is properly loaded."""
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from plugin_manager import PluginManager
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# Create temp directory structure with plugin
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with tempfile.TemporaryDirectory() as tmpdir:
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plugin_dir = Path(tmpdir) / "test_plugin"
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plugin_dir.mkdir()
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# Create __init__.py with Plugin class
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init_file = plugin_dir / "__init__.py"
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init_file.write_text('''
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class Plugin:
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def __init__(self, main_window):
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self.main_window = main_window
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def register_menu(self, menu):
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pass
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''')
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# Create plugin.json with metadata
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manifest = {
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"name": "Custom Name",
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"version": "2.0.0",
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"author": "Test Author",
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"description": "Test Description"
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}
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(plugin_dir / "plugin.json").write_text(json.dumps(manifest))
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# Add temp dir to path for import
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sys.path.insert(0, tmpdir)
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try:
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manager = PluginManager(mock_main_window)
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manager.plugins_dir = Path(tmpdir)
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# Manually load the plugin
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instance = manager._import_and_instantiate("test_plugin", init_file)
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# Verify metadata was attached
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assert hasattr(instance, 'metadata')
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assert instance.metadata['name'] == "Custom Name"
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assert instance.metadata['version'] == "2.0.0"
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assert instance.metadata['author'] == "Test Author"
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finally:
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sys.path.remove(tmpdir)
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class TestPluginInterfaceCompliance:
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"""Test that plugins follow the defined interface specification."""
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def test_interface_module_exists(self):
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"""Verify plugin interface module was created."""
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# This test verifies the new interface.py exists
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try:
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from src.plugins.interface import PluginBase, AnalysisPlugin, VisualizationPlugin
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assert hasattr(PluginBase, 'register_menu')
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assert hasattr(PluginBase, 'get_metadata')
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except ImportError as e:
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pytest.fail(f"Interface module missing: {e}")
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def test_plugin_base_has_abstract_method(self):
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"""Verify PluginBase defines required abstract method."""
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from src.plugins.interface import PluginBase
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from abc import ABC
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assert isinstance(PluginBase, ABC)
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assert 'register_menu' in PluginBase.__dict__
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class TestPathValidation:
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"""Test path handling to prevent security issues (S002)."""
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def test_plugins_dir_resolves_absolute_path(self):
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"""Verify plugin paths are always resolved to absolute."""
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from plugin_manager import PluginManager
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from unittest.mock import Mock, patch
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mock_window = Mock()
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with patch('plugin_manager.Path.cwd', return_value=Path('/current/working/dir')):
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manager = PluginManager(mock_window)
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# The path should be absolute (no '..' components)
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assert not '..' in str(manager.plugins_dir) or manager.plugins_dir.is_absolute()
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def test_plugin_path_traversal_blocked(self):
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"""Test that path traversal attempts are blocked."""
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def validate_plugin_path(path: Path, plugins_root: Path) -> bool:
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"""Validate that plugin path is within allowed root."""
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abs_path = path.resolve()
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return str(abs_path).startswith(str(plugins_root.resolve()))
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plugins_root = Path("/tmp/plugins")
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# Valid paths should pass
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assert validate_plugin_path(Path("/tmp/plugins/my_plugin"), plugins_root) is True
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assert validate_plugin_path(Path("/tmp/plugins/nested/plugin"), plugins_root) is True
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# Traversal attempts should fail
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assert validate_plugin_path(Path("/tmp/other/plugin"), plugins_root) is False
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assert validate_plugin_path(Path("/etc/passwd"), plugins_root) is False
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if __name__ == "__main__":
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pytest.main([__file__, "-v"])
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