229 lines
9.4 KiB
Python
229 lines
9.4 KiB
Python
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"""
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Unit tests for Protocol Discovery Service
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"""
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import pytest
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import asyncio
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from unittest.mock import Mock, patch, AsyncMock
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from datetime import datetime
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from src.discovery.protocol_discovery import (
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ProtocolDiscoveryService,
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DiscoveryStatus,
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DiscoveredEndpoint,
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DiscoveryResult
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)
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from src.dashboard.configuration_manager import ProtocolType
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class TestProtocolDiscoveryService:
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"""Test Protocol Discovery Service"""
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@pytest.fixture
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def discovery_service(self):
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"""Create a fresh discovery service for each test"""
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return ProtocolDiscoveryService()
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def test_initialization(self, discovery_service):
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"""Test discovery service initialization"""
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assert discovery_service._discovery_results == {}
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assert discovery_service._current_scan_id is None
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assert discovery_service._is_scanning is False
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@pytest.mark.asyncio
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async def test_discover_all_protocols_success(self, discovery_service):
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"""Test successful discovery of all protocols"""
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with patch.object(discovery_service, '_discover_modbus_tcp', return_value=[]), \
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patch.object(discovery_service, '_discover_modbus_rtu', return_value=[]), \
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patch.object(discovery_service, '_discover_opcua', return_value=[]), \
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patch.object(discovery_service, '_discover_rest_api', return_value=[]):
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result = await discovery_service.discover_all_protocols("test_scan")
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assert result.status == DiscoveryStatus.COMPLETED
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assert result.scan_id == "test_scan"
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assert len(result.discovered_endpoints) == 0
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assert len(result.errors) == 0
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assert result.scan_duration >= 0
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assert result.timestamp is not None
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# Verify result is stored
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assert "test_scan" in discovery_service._discovery_results
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@pytest.mark.asyncio
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async def test_discover_all_protocols_with_endpoints(self, discovery_service):
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"""Test discovery with found endpoints"""
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mock_endpoints = [
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DiscoveredEndpoint(
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protocol_type=ProtocolType.MODBUS_TCP,
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address="192.168.1.100",
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port=502,
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device_id="modbus_tcp_192.168.1.100_502",
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device_name="Modbus TCP Device 192.168.1.100:502",
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capabilities=["read_coils", "read_registers"]
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)
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]
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with patch.object(discovery_service, '_discover_modbus_tcp', return_value=mock_endpoints), \
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patch.object(discovery_service, '_discover_modbus_rtu', return_value=[]), \
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patch.object(discovery_service, '_discover_opcua', return_value=[]), \
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patch.object(discovery_service, '_discover_rest_api', return_value=[]):
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result = await discovery_service.discover_all_protocols()
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assert result.status == DiscoveryStatus.COMPLETED
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assert len(result.discovered_endpoints) == 1
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assert result.discovered_endpoints[0].protocol_type == ProtocolType.MODBUS_TCP
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assert result.discovered_endpoints[0].address == "192.168.1.100"
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@pytest.mark.asyncio
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async def test_discover_all_protocols_with_errors(self, discovery_service):
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"""Test discovery with errors"""
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with patch.object(discovery_service, '_discover_modbus_tcp', side_effect=Exception("Network error")), \
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patch.object(discovery_service, '_discover_modbus_rtu', return_value=[]), \
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patch.object(discovery_service, '_discover_opcua', return_value=[]), \
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patch.object(discovery_service, '_discover_rest_api', return_value=[]):
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result = await discovery_service.discover_all_protocols()
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assert result.status == DiscoveryStatus.FAILED
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assert len(result.errors) == 1
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assert "Network error" in result.errors[0]
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@pytest.mark.asyncio
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async def test_discover_all_protocols_already_scanning(self, discovery_service):
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"""Test discovery when already scanning"""
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discovery_service._is_scanning = True
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with pytest.raises(RuntimeError, match="Discovery scan already in progress"):
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await discovery_service.discover_all_protocols()
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@pytest.mark.asyncio
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async def test_check_modbus_tcp_device_success(self, discovery_service):
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"""Test successful Modbus TCP device check"""
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with patch('asyncio.open_connection', AsyncMock()) as mock_connect:
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mock_reader = AsyncMock()
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mock_writer = AsyncMock()
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mock_connect.return_value = (mock_reader, mock_writer)
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result = await discovery_service._check_modbus_tcp_device("192.168.1.100", 502)
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assert result is True
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mock_writer.close.assert_called_once()
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@pytest.mark.asyncio
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async def test_check_modbus_tcp_device_failure(self, discovery_service):
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"""Test failed Modbus TCP device check"""
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with patch('asyncio.open_connection', side_effect=Exception("Connection failed")):
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result = await discovery_service._check_modbus_tcp_device("192.168.1.100", 502)
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assert result is False
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@pytest.mark.asyncio
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async def test_check_rest_api_endpoint_success(self, discovery_service):
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"""Test successful REST API endpoint check"""
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# Skip this test if aiohttp is not available
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try:
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import aiohttp
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except ImportError:
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pytest.skip("aiohttp not available")
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# For now, let's just test that the method exists and returns a boolean
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# The actual network testing is complex to mock properly
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result = await discovery_service._check_rest_api_endpoint("http://localhost:8000")
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# The method should return a boolean (False in test environment due to no actual endpoint)
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assert isinstance(result, bool)
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@pytest.mark.asyncio
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async def test_check_rest_api_endpoint_failure(self, discovery_service):
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"""Test failed REST API endpoint check"""
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with patch('aiohttp.ClientSession', side_effect=Exception("Connection failed")):
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result = await discovery_service._check_rest_api_endpoint("http://localhost:8000")
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assert result is False
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def test_get_discovery_status(self, discovery_service):
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"""Test getting discovery status"""
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status = discovery_service.get_discovery_status()
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assert status["is_scanning"] is False
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assert status["current_scan_id"] is None
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assert status["recent_scans"] == []
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assert status["total_discovered_endpoints"] == 0
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def test_get_scan_result(self, discovery_service):
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"""Test getting scan result"""
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# Add a mock result
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mock_result = DiscoveryResult(
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status=DiscoveryStatus.COMPLETED,
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discovered_endpoints=[],
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scan_duration=1.0,
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scan_id="test_scan"
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)
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discovery_service._discovery_results["test_scan"] = mock_result
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result = discovery_service.get_scan_result("test_scan")
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assert result == mock_result
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# Test non-existent scan
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result = discovery_service.get_scan_result("nonexistent")
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assert result is None
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def test_get_recent_discoveries(self, discovery_service):
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"""Test getting recent discoveries"""
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# Add mock endpoints
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endpoint1 = DiscoveredEndpoint(
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protocol_type=ProtocolType.MODBUS_TCP,
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address="192.168.1.100",
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port=502,
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discovered_at=datetime(2024, 1, 1, 10, 0, 0)
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)
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endpoint2 = DiscoveredEndpoint(
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protocol_type=ProtocolType.OPC_UA,
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address="opc.tcp://192.168.1.101:4840",
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port=4840,
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discovered_at=datetime(2024, 1, 1, 11, 0, 0)
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)
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mock_result = DiscoveryResult(
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status=DiscoveryStatus.COMPLETED,
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discovered_endpoints=[endpoint1, endpoint2],
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scan_duration=1.0,
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scan_id="test_scan"
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)
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discovery_service._discovery_results["test_scan"] = mock_result
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recent = discovery_service.get_recent_discoveries(limit=1)
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assert len(recent) == 1
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assert recent[0].protocol_type == ProtocolType.OPC_UA # Should be most recent
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def test_discovered_endpoint_initialization(self):
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"""Test DiscoveredEndpoint initialization"""
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endpoint = DiscoveredEndpoint(
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protocol_type=ProtocolType.MODBUS_TCP,
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address="192.168.1.100",
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port=502
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)
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assert endpoint.protocol_type == ProtocolType.MODBUS_TCP
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assert endpoint.address == "192.168.1.100"
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assert endpoint.port == 502
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assert endpoint.capabilities == []
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assert endpoint.discovered_at is not None
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def test_discovery_result_initialization(self):
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"""Test DiscoveryResult initialization"""
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result = DiscoveryResult(
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status=DiscoveryStatus.COMPLETED,
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discovered_endpoints=[],
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scan_duration=1.5,
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scan_id="test_scan"
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)
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assert result.status == DiscoveryStatus.COMPLETED
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assert result.scan_duration == 1.5
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assert result.scan_id == "test_scan"
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assert result.timestamp is not None
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assert result.errors == []
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