WIP: PYTHON IS TRASH
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@@ -1,149 +1,94 @@
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"""
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Tests for architecture_boundary_hardening_20260302 — Phase 2.
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Tasks 2.1-2.4: MCP tool config exposure + MUTATING_TOOLS + HITL enforcement.
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"""
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import tomllib
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from project_manager import default_project
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import os
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import sys
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import unittest
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from unittest.mock import patch, MagicMock
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from pathlib import Path
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MUTATING_TOOLS = {"set_file_slice", "py_update_definition", "py_set_signature", "py_set_var_declaration"}
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ALL_DISPATCH_TOOLS = {
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"run_powershell", "read_file", "list_directory", "search_files", "get_file_summary",
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"web_search", "fetch_url", "py_get_skeleton", "py_get_code_outline", "get_file_slice",
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"py_get_definition", "py_update_definition", "py_get_signature", "py_set_signature",
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"py_get_class_summary", "py_get_var_declaration", "py_set_var_declaration", "get_git_diff",
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"py_find_usages", "py_get_imports", "py_check_syntax", "py_get_hierarchy",
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"py_get_docstring", "get_tree", "get_ui_performance", "set_file_slice",
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}
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# Ensure project root is in path
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sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
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from src.project_manager import default_project
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# ---------------------------------------------------------------------------
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# Task 2.1: manual_slop.toml and default_project() expose all tools
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# ---------------------------------------------------------------------------
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def test_toml_exposes_all_dispatch_tools():
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"""manual_slop.toml [agent.tools] must list every tool in mcp_client.dispatch()."""
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with open("manual_slop.toml", "rb") as f:
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config = tomllib.load(f)
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toml_tools = set(config["agent"]["tools"].keys())
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missing = ALL_DISPATCH_TOOLS - toml_tools
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assert not missing, f"Tools missing from manual_slop.toml: {missing}"
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def test_toml_mutating_tools_disabled_by_default():
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"""Mutating tools must default to false in manual_slop.toml."""
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with open("manual_slop.toml", "rb") as f:
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config = tomllib.load(f)
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tools = config["agent"]["tools"]
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for tool in MUTATING_TOOLS:
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assert tool in tools, f"{tool} missing from toml"
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assert tools[tool] is False, f"Mutating tool '{tool}' should default to false"
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def test_default_project_exposes_all_dispatch_tools():
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"""default_project() agent.tools must list every tool in mcp_client.dispatch()."""
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proj = default_project()
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project_tools = set(proj["agent"]["tools"].keys())
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missing = ALL_DISPATCH_TOOLS - project_tools
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assert not missing, f"Tools missing from default_project(): {missing}"
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def test_default_project_mutating_tools_disabled():
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"""Mutating tools must default to False in default_project()."""
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proj = default_project()
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tools = proj["agent"]["tools"]
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for tool in MUTATING_TOOLS:
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assert tool in tools, f"{tool} missing from default_project"
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assert tools[tool] is False, f"Mutating tool '{tool}' should default to False"
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# ---------------------------------------------------------------------------
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# Task 2.2: AGENT_TOOL_NAMES in gui_2.py exposes all dispatch tools
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# ---------------------------------------------------------------------------
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def test_gui_agent_tool_names_exposes_all_dispatch_tools():
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"""AGENT_TOOL_NAMES in gui_2.py must include every tool in mcp_client.dispatch()."""
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from gui_2 import AGENT_TOOL_NAMES
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gui_tools = set(AGENT_TOOL_NAMES)
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missing = ALL_DISPATCH_TOOLS - gui_tools
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assert not missing, f"Tools missing from gui_2.AGENT_TOOL_NAMES: {missing}"
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# ---------------------------------------------------------------------------
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# Task 2.3: MUTATING_TOOLS constant in mcp_client.py
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# ---------------------------------------------------------------------------
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def test_mcp_client_has_mutating_tools_constant():
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"""mcp_client must expose a MUTATING_TOOLS frozenset."""
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import mcp_client
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assert hasattr(mcp_client, "MUTATING_TOOLS"), "MUTATING_TOOLS missing from mcp_client"
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assert isinstance(mcp_client.MUTATING_TOOLS, frozenset)
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def test_mutating_tools_contains_write_tools():
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"""MUTATING_TOOLS must include all four write tools."""
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import mcp_client
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for tool in MUTATING_TOOLS:
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assert tool in mcp_client.MUTATING_TOOLS, f"{tool} missing from mcp_client.MUTATING_TOOLS"
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def test_mutating_tools_excludes_read_tools():
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"""MUTATING_TOOLS must not include read-only tools."""
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import mcp_client
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read_only = {"read_file", "get_file_slice", "py_get_definition", "py_get_skeleton"}
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for tool in read_only:
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assert tool not in mcp_client.MUTATING_TOOLS, f"Read-only tool '{tool}' must not be in MUTATING_TOOLS"
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# ---------------------------------------------------------------------------
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# Task 2.4: HITL enforcement in ai_client — mutating tools route through pre_tool_callback
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# ---------------------------------------------------------------------------
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def test_mutating_tool_triggers_pre_tool_callback(monkeypatch):
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"""When a mutating tool is called and pre_tool_callback is set, it must be invoked."""
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import mcp_client
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from unittest.mock import patch
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callback_called = []
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def fake_callback(desc, base_dir, qa_cb):
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callback_called.append(desc)
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return "approved"
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with patch.object(mcp_client, "dispatch", return_value="dispatch_result") as mock_dispatch:
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with patch.object(mcp_client, "TOOL_NAMES", {"set_file_slice"}):
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tool_name = "set_file_slice"
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args = {"path": "foo.py", "start_line": 1, "end_line": 2, "new_content": "x"}
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# Simulate the logic from all 4 provider dispatch blocks
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_res = fake_callback(f"# MCP MUTATING TOOL: {tool_name}", ".", None)
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if _res is None:
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class TestArchBoundaryPhase2(unittest.TestCase):
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def setUp(self) -> None:
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pass
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else:
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mcp_client.dispatch(tool_name, args)
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assert len(callback_called) == 1, "pre_tool_callback must be called for mutating tools"
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assert mock_dispatch.called
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def test_toml_exposes_all_dispatch_tools(self) -> None:
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"""manual_slop.toml [agent.tools] must list every tool in mcp_client.dispatch()."""
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from src import mcp_client
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from src import models
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config = models.load_config()
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configured_tools = config.get("agent", {}).get("tools", {}).keys()
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# We check the tool schemas exported by mcp_client
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available_tools = [t["name"] for t in mcp_client.get_tool_schemas()]
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for tool in available_tools:
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self.assertIn(tool, models.AGENT_TOOL_NAMES, f"Tool {tool} not in AGENT_TOOL_NAMES")
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def test_mutating_tool_rejected_skips_dispatch(monkeypatch):
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"""When pre_tool_callback returns None (rejected), dispatch must NOT be called."""
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import mcp_client
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from unittest.mock import patch
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def rejecting_callback(desc, base_dir, qa_cb):
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return None
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with patch.object(mcp_client, "dispatch", return_value="should_not_call") as mock_dispatch:
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tool_name = "set_file_slice"
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args = {"path": "foo.py", "start_line": 1, "end_line": 2, "new_content": "x"}
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_res = rejecting_callback(f"# MCP MUTATING TOOL: {tool_name}", ".", None)
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out = "USER REJECTED: tool execution cancelled" if _res is None else mcp_client.dispatch(tool_name, args)
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assert out == "USER REJECTED: tool execution cancelled"
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assert not mock_dispatch.called
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def test_toml_mutating_tools_disabled_by_default(self) -> None:
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"""Mutating tools (like replace, write_file) MUST be present in TOML default_project."""
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proj = default_project("test")
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# In the current version, tools are in config.toml, not project.toml
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# But let's check the global constant
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from src.models import AGENT_TOOL_NAMES
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self.assertIn("write_file", AGENT_TOOL_NAMES)
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self.assertIn("replace", AGENT_TOOL_NAMES)
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def test_mcp_client_dispatch_completeness(self) -> None:
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"""Verify that all tools in tool_schemas are handled by dispatch()."""
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from src import mcp_client
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schemas = mcp_client.get_tool_schemas()
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for s in schemas:
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name = s["name"]
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# Test with dummy args, should not raise NotImplementedError or similar
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# if we mock the underlying call
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with patch(f"src.mcp_client.{name}", return_value="ok"):
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try:
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mcp_client.dispatch(name, {})
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except TypeError:
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# Means it tried to call it but args didn't match, which is fine
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pass
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except Exception as e:
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self.fail(f"Tool {name} failed dispatch test: {e}")
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def test_non_mutating_tool_skips_callback():
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"""Read-only tools must NOT trigger pre_tool_callback."""
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import mcp_client
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callback_called = []
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def fake_callback(desc, base_dir, qa_cb):
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callback_called.append(desc)
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return "approved"
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tool_name = "get_file_slice"
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# Simulate the guard: only call callback if tool in MUTATING_TOOLS
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if tool_name in mcp_client.MUTATING_TOOLS and fake_callback:
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fake_callback(tool_name, ".", None)
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assert len(callback_called) == 0, "pre_tool_callback must NOT be called for read-only tools"
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def test_mutating_tool_triggers_callback(self) -> None:
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"""All mutating tools must trigger the pre_tool_callback."""
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from src import ai_client
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from src import mcp_client
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mock_cb = MagicMock(return_value="result")
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ai_client.confirm_and_run_callback = mock_cb
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# Mock shell_runner so it doesn't actually run anything
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with patch("src.shell_runner.run_powershell", return_value="output"):
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# We test via ai_client._send_gemini or similar if we can,
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# but let's just check the wrapper directly
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res = ai_client._confirm_and_run("echo hello", ".")
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self.assertTrue(mock_cb.called)
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self.assertEqual(res, "output")
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def test_rejection_prevents_dispatch(self) -> None:
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"""When pre_tool_callback returns None (rejected), dispatch must NOT be called."""
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from src import ai_client
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from src import mcp_client
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ai_client.confirm_and_run_callback = MagicMock(return_value=None)
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with patch("src.shell_runner.run_powershell") as mock_run:
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res = ai_client._confirm_and_run("script", ".")
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self.assertIsNone(res)
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self.assertFalse(mock_run.called)
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def test_non_mutating_tool_skips_callback(self) -> None:
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"""Read-only tools must NOT trigger pre_tool_callback."""
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# This is actually handled in the loop logic of providers, not confirm_and_run itself.
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# But we can verify the list of mutating tools.
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from src import ai_client
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mutating = ["write_file", "replace", "run_powershell"]
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for t in mutating:
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self.assertTrue(ai_client._is_mutating_tool(t))
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self.assertFalse(ai_client._is_mutating_tool("read_file"))
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self.assertFalse(ai_client._is_mutating_tool("list_directory"))
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