Ryan Malloy
70c4a4a39a
Add complete test coverage for the mcilspy package: - T7: Create TestAssembly.dll fixture with known types/members - T1: Integration tests using real assembly (metadata reader + ILSpy wrapper) - T2: MCP tool tests with mocked wrapper for each @mcp.tool() - T3: Error path tests for regex, file not found, invalid assemblies - T4: Concurrency tests with asyncio.gather() for parallel operations - T5: Docstring coverage tests using AST introspection - T6: Timeout behavior tests for 5-minute subprocess timeout Test summary: - 147 tests passing - 14 skipped (ilspycmd-dependent integration tests) - 73% code coverage - All ruff linting checks pass
424 lines
15 KiB
Python
424 lines
15 KiB
Python
"""Tests for error handling paths.
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These tests verify that the server handles various error conditions gracefully:
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- Invalid regex patterns
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- ilspycmd not found scenarios
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- Invalid language versions
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- File not found errors
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- Invalid assembly files
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"""
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from unittest.mock import AsyncMock, MagicMock, patch
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import pytest
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from mcilspy import server
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from mcilspy.ilspy_wrapper import ILSpyWrapper
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from mcilspy.metadata_reader import MetadataReader
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from mcilspy.models import EntityType
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class TestInvalidRegexPatterns:
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"""Tests for invalid regex pattern handling."""
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@pytest.mark.asyncio
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async def test_search_types_invalid_regex(self, test_assembly_path):
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"""Test search_types with invalid regex pattern."""
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# Use an invalid regex pattern
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result = await server.search_types(
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test_assembly_path,
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pattern="[invalid(regex",
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use_regex=True,
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)
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assert "Invalid regex pattern" in result
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@pytest.mark.asyncio
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async def test_search_methods_invalid_regex(self, test_assembly_path):
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"""Test search_methods with invalid regex pattern."""
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result = await server.search_methods(
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test_assembly_path,
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pattern="[unclosed",
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use_regex=True,
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)
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assert "Invalid regex pattern" in result
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@pytest.mark.asyncio
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async def test_search_fields_invalid_regex(self, test_assembly_path):
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"""Test search_fields with invalid regex pattern."""
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result = await server.search_fields(
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test_assembly_path,
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pattern="*invalid*",
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use_regex=True,
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)
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assert "Invalid regex pattern" in result
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@pytest.mark.asyncio
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async def test_search_properties_invalid_regex(self, test_assembly_path):
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"""Test search_properties with invalid regex pattern."""
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result = await server.search_properties(
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test_assembly_path,
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pattern="(?P<broken",
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use_regex=True,
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)
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assert "Invalid regex pattern" in result
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@pytest.mark.asyncio
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async def test_search_strings_invalid_regex(self):
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"""Test search_strings with invalid regex pattern."""
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# Mock the wrapper to avoid needing ilspycmd
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from mcilspy.models import DecompileResponse
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mock_response = DecompileResponse(
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success=True,
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assembly_name="Test",
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source_code="public class Test { string s = \"hello\"; }",
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)
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mock_wrapper = MagicMock()
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mock_wrapper.decompile = AsyncMock(return_value=mock_response)
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with patch.object(server, "get_wrapper", return_value=mock_wrapper):
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result = await server.search_strings(
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"/path/to/test.dll",
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pattern="[broken",
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use_regex=True,
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)
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assert "Invalid regex pattern" in result
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class TestIlspyCmdNotFound:
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"""Tests for scenarios where ilspycmd is not installed."""
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def test_wrapper_init_raises_when_not_found(self):
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"""Test that ILSpyWrapper raises RuntimeError when ilspycmd not found."""
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with (
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patch("shutil.which", return_value=None),
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patch("os.path.isfile", return_value=False),
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pytest.raises(RuntimeError) as exc_info,
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):
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ILSpyWrapper()
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assert "ILSpyCmd not found" in str(exc_info.value)
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@pytest.mark.asyncio
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async def test_decompile_when_not_installed(self):
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"""Test decompile_assembly when ilspycmd is not installed."""
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with patch.object(
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server, "get_wrapper", side_effect=RuntimeError("ILSpyCmd not found")
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):
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result = await server.decompile_assembly("/path/to/test.dll")
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assert "Error" in result
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assert "ILSpyCmd not found" in result
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@pytest.mark.asyncio
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async def test_list_types_when_not_installed(self):
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"""Test list_types when ilspycmd is not installed."""
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with patch.object(
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server, "get_wrapper", side_effect=RuntimeError("ILSpyCmd not found")
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):
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result = await server.list_types("/path/to/test.dll")
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assert "Error" in result
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assert "ILSpyCmd not found" in result
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@pytest.mark.asyncio
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async def test_generate_diagrammer_when_not_installed(self):
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"""Test generate_diagrammer when ilspycmd is not installed."""
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with patch.object(
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server, "get_wrapper", side_effect=RuntimeError("ILSpyCmd not found")
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):
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result = await server.generate_diagrammer("/path/to/test.dll")
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assert "Error" in result
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@pytest.mark.asyncio
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async def test_get_assembly_info_when_not_installed(self):
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"""Test get_assembly_info when ilspycmd is not installed."""
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with patch.object(
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server, "get_wrapper", side_effect=RuntimeError("ILSpyCmd not found")
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):
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result = await server.get_assembly_info("/path/to/test.dll")
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assert "Error" in result
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class TestInvalidLanguageVersion:
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"""Tests for invalid language version handling."""
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@pytest.mark.asyncio
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async def test_decompile_with_invalid_language_version(self):
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"""Test decompile_assembly with invalid language version."""
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# The LanguageVersion enum should raise ValueError for invalid versions
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result = await server.decompile_assembly(
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"/path/to/test.dll",
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language_version="CSharp99", # Invalid version
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)
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# Should return an error about the invalid language version
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assert "Error" in result
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class TestFileNotFoundErrors:
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"""Tests for file not found error handling."""
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@pytest.mark.asyncio
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async def test_search_methods_file_not_found(self, nonexistent_path):
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"""Test search_methods with nonexistent file."""
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result = await server.search_methods(nonexistent_path, pattern="test")
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assert "Error" in result
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@pytest.mark.asyncio
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async def test_search_fields_file_not_found(self, nonexistent_path):
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"""Test search_fields with nonexistent file."""
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result = await server.search_fields(nonexistent_path, pattern="test")
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assert "Error" in result
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@pytest.mark.asyncio
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async def test_search_properties_file_not_found(self, nonexistent_path):
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"""Test search_properties with nonexistent file."""
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result = await server.search_properties(nonexistent_path, pattern="test")
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assert "Error" in result
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@pytest.mark.asyncio
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async def test_list_events_file_not_found(self, nonexistent_path):
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"""Test list_events with nonexistent file."""
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result = await server.list_events(nonexistent_path)
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assert "Error" in result
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@pytest.mark.asyncio
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async def test_list_resources_file_not_found(self, nonexistent_path):
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"""Test list_resources with nonexistent file."""
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result = await server.list_resources(nonexistent_path)
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assert "Error" in result
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@pytest.mark.asyncio
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async def test_get_metadata_summary_file_not_found(self, nonexistent_path):
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"""Test get_metadata_summary with nonexistent file."""
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result = await server.get_metadata_summary(nonexistent_path)
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assert "Error" in result
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def test_metadata_reader_file_not_found(self, nonexistent_path):
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"""Test MetadataReader with nonexistent file."""
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with pytest.raises(FileNotFoundError):
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MetadataReader(nonexistent_path)
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class TestInvalidAssemblyFiles:
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"""Tests for handling invalid assembly files."""
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@pytest.fixture
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def invalid_assembly_path(self, tmp_path):
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"""Create a file that is not a valid .NET assembly."""
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invalid_file = tmp_path / "invalid.dll"
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invalid_file.write_text("This is not a valid PE file")
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return str(invalid_file)
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def test_metadata_reader_invalid_assembly(self, invalid_assembly_path):
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"""Test MetadataReader with an invalid assembly file."""
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# dnfile may silently fail or raise on invalid assemblies
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# Either outcome is acceptable - the key is it doesn't crash
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try:
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with MetadataReader(invalid_assembly_path) as reader:
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# If it opens, trying to read should fail or return empty
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reader.get_assembly_metadata()
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# If we get here, that's OK - just shouldn't crash
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assert True
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except Exception:
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# An exception is also acceptable for invalid PE files
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assert True
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@pytest.mark.asyncio
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async def test_search_methods_invalid_assembly(self, invalid_assembly_path):
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"""Test search_methods with invalid assembly."""
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result = await server.search_methods(invalid_assembly_path, pattern="test")
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assert "Error" in result
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@pytest.mark.asyncio
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async def test_get_metadata_summary_invalid_assembly(self, invalid_assembly_path):
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"""Test get_metadata_summary with invalid assembly."""
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result = await server.get_metadata_summary(invalid_assembly_path)
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assert "Error" in result
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class TestEntityTypeValidation:
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"""Tests for EntityType enum validation."""
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def test_invalid_entity_type_string(self):
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"""Test EntityType.from_string with invalid type name."""
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with pytest.raises(ValueError) as exc_info:
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EntityType.from_string("invalid_type")
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assert "Invalid entity type" in str(exc_info.value)
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def test_invalid_entity_type_single_letter(self):
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"""Test EntityType.from_string with invalid single letter."""
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with pytest.raises(ValueError) as exc_info:
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EntityType.from_string("x")
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assert "Invalid entity type" in str(exc_info.value)
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@pytest.mark.asyncio
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async def test_list_types_with_invalid_entity_type(self):
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"""Test list_types with invalid entity type in list."""
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# The server should skip invalid entity types with a warning
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from mcilspy.models import ListTypesResponse
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mock_response = ListTypesResponse(success=True, types=[], total_count=0)
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mock_wrapper = MagicMock()
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mock_wrapper.list_types = AsyncMock(return_value=mock_response)
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with patch.object(server, "get_wrapper", return_value=mock_wrapper):
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# Should not raise, but should skip invalid types
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result = await server.list_types(
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"/path/to/test.dll",
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entity_types=["class", "invalid", "interface"],
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)
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# Should still work, just skipping the invalid type
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assert isinstance(result, str)
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class TestContextInfoFailure:
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"""Tests for handling ctx.info() failures."""
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@pytest.mark.asyncio
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async def test_decompile_with_failing_context(self):
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"""Test decompile_assembly when ctx.info() fails."""
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from mcilspy.models import DecompileResponse
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mock_response = DecompileResponse(
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success=True,
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assembly_name="Test",
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source_code="class Test { }",
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)
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mock_wrapper = MagicMock()
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mock_wrapper.decompile = AsyncMock(return_value=mock_response)
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# Create a mock context that fails on info()
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mock_ctx = MagicMock()
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mock_ctx.info = AsyncMock(side_effect=Exception("Context info failed"))
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with patch.object(server, "get_wrapper", return_value=mock_wrapper):
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# The function should handle the failing ctx.info gracefully
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# Note: Currently ctx is optional and None by default
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result = await server.decompile_assembly("/path/to/test.dll", ctx=None)
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# Should still succeed since ctx is optional
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assert "Test" in result
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class TestEmptyResults:
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"""Tests for handling empty result sets."""
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@pytest.mark.asyncio
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async def test_search_methods_empty_assembly(self, test_assembly_path):
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"""Test search with pattern that matches nothing."""
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result = await server.search_methods(
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test_assembly_path, pattern="ZZZZNONEXISTENT"
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)
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assert "No methods found" in result
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@pytest.mark.asyncio
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async def test_search_fields_no_matches(self, test_assembly_path):
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"""Test field search with no matches."""
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result = await server.search_fields(
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test_assembly_path, pattern="NONEXISTENT_FIELD_12345"
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)
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assert "No fields found" in result
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@pytest.mark.asyncio
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async def test_search_properties_no_matches(self, test_assembly_path):
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"""Test property search with no matches."""
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result = await server.search_properties(
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test_assembly_path, pattern="NONEXISTENT_PROPERTY"
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)
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assert "No properties found" in result
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class TestInstallIlspy:
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"""Tests for install_ilspy tool error paths."""
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@pytest.mark.asyncio
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async def test_install_without_dotnet(self):
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"""Test install_ilspy when dotnet is not available."""
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mock_status = {
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"dotnet_available": False,
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"dotnet_version": None,
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"ilspycmd_available": False,
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"ilspycmd_version": None,
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"ilspycmd_path": None,
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}
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with (
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patch.object(server, "_check_dotnet_tools", return_value=mock_status),
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patch.object(
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server,
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"_detect_platform",
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return_value={
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"system": "linux",
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"distro": "arch",
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"package_manager": "pacman",
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"install_command": "sudo pacman -S dotnet-sdk",
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},
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),
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):
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result = await server.install_ilspy()
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assert "dotnet CLI is not installed" in result
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@pytest.mark.asyncio
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async def test_install_already_installed(self):
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"""Test install_ilspy when already installed."""
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mock_status = {
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"dotnet_available": True,
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"dotnet_version": "8.0.100",
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"ilspycmd_available": True,
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"ilspycmd_version": "8.2.0",
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"ilspycmd_path": "/home/user/.dotnet/tools/ilspycmd",
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}
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with patch.object(server, "_check_dotnet_tools", return_value=mock_status):
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result = await server.install_ilspy()
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assert "already installed" in result
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@pytest.mark.asyncio
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async def test_install_fails(self):
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"""Test install_ilspy when installation fails."""
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mock_status_before = {
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"dotnet_available": True,
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"dotnet_version": "8.0.100",
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"ilspycmd_available": False,
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"ilspycmd_version": None,
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"ilspycmd_path": None,
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}
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# Mock subprocess to simulate installation failure
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mock_proc = MagicMock()
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mock_proc.returncode = 1
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mock_proc.communicate = AsyncMock(return_value=(b"", b"Installation failed"))
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with (
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patch.object(server, "_check_dotnet_tools", return_value=mock_status_before),
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patch("asyncio.create_subprocess_exec", return_value=mock_proc),
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):
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result = await server.install_ilspy()
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assert "Installation failed" in result or "failed" in result.lower()
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