Files
hermes-agent/tests/hermes_cli/test_uv_tool_update.py
2026-06-04 23:20:29 -04:00

343 lines
15 KiB
Python

"""Tests for uv-tool install detection in the update path (issue #29700).
``uv tool install hermes-agent`` lives outside any venv, so the previous
``uv pip install --upgrade`` update path failed with ``No virtual
environment found``. ``is_uv_tool_install`` should detect this layout and
both the user-facing recommended command and the actual
``_cmd_update_pip`` subprocess invocation should switch to
``uv tool upgrade hermes-agent``.
Detection is restricted to properties of the running interpreter
(``sys.prefix`` / ``sys.executable``) so a pip/venv install on a machine
that also has ``uv tool install hermes-agent`` does not get misclassified.
"""
from __future__ import annotations
import subprocess
from types import SimpleNamespace
from unittest.mock import patch
import pytest
# ---------------------------------------------------------------------------
# Managed-uv compatibility for tests that patch shutil.which
# ---------------------------------------------------------------------------
# The production code now uses ``ensure_uv()`` / ``update_managed_uv()``
# instead of ``shutil.which("uv")``. Many tests in this file patch
# ``shutil.which`` to control whether uv is "available" — these autouse
# fixtures make the managed_uv functions delegate to the patched
# ``shutil.which`` so the existing test setup keeps working without
# per-test changes.
@pytest.fixture(autouse=True)
def _patch_managed_uv(request):
"""Make managed_uv helpers follow shutil.which mocking in tests."""
import shutil
# resolve_uv delegates to shutil.which("uv") so that test patches
# on shutil.which flow through naturally.
def _fake_resolve_uv():
return shutil.which("uv")
def _fake_ensure_uv():
return shutil.which("uv")
def _fake_update_managed_uv():
return None # never actually self-update in tests
with patch("hermes_cli.managed_uv.resolve_uv", side_effect=_fake_resolve_uv), \
patch("hermes_cli.managed_uv.ensure_uv", side_effect=_fake_ensure_uv), \
patch("hermes_cli.managed_uv.update_managed_uv", side_effect=_fake_update_managed_uv):
yield
# ---------------------------------------------------------------------------
# is_uv_tool_install
# ---------------------------------------------------------------------------
class TestIsUvToolInstall:
def test_returns_true_when_sys_prefix_matches_uv_tool_layout(self):
from hermes_cli import config
with patch.object(config.sys, "prefix", "/home/user/.local/share/uv/tools/hermes-agent"):
assert config.is_uv_tool_install() is True
def test_returns_true_when_sys_executable_matches_uv_tool_layout(self):
"""Some uv-tool layouts surface the marker on ``sys.executable`` (bin/python)."""
from hermes_cli import config
with patch.object(config.sys, "prefix", "/some/unrelated/venv"), \
patch.object(
config.sys,
"executable",
"/home/user/.local/share/uv/tools/hermes-agent/bin/python",
):
assert config.is_uv_tool_install() is True
def test_returns_false_when_neither_prefix_nor_executable_matches(self):
from hermes_cli import config
with patch.object(config.sys, "prefix", "/some/unrelated/venv"), \
patch.object(config.sys, "executable", "/usr/bin/python3"):
assert config.is_uv_tool_install() is False
def test_does_not_consult_uv_tool_list(self):
"""Detection must NOT shell out: ``uv tool list`` would false-positive
when the active install is pip/venv but the machine also has
``uv tool install hermes-agent`` somewhere on disk. Copilot review on
PR #29703 flagged this; the fix is to never call ``uv tool list``
from the detection path."""
from hermes_cli import config
with patch.object(config.sys, "prefix", "/some/unrelated/venv"), \
patch.object(config.sys, "executable", "/usr/bin/python3"), \
patch("subprocess.run") as mock_run:
assert config.is_uv_tool_install() is False
mock_run.assert_not_called()
def test_case_insensitive_match(self):
"""Match must be case-insensitive — Windows paths preserve case
(e.g. ``...AppData\\Local\\UV\\Tools\\hermes-agent``) and a case-sensitive
check would miss them. We exercise the lower-cased compare path here
without monkey-patching ``os.sep``, which would break the whole suite."""
from hermes_cli import config
with patch.object(
config.sys, "prefix", "/HOME/USER/.local/share/UV/Tools/hermes-agent"
):
assert config.is_uv_tool_install() is True
def test_handles_empty_executable(self):
from hermes_cli import config
with patch.object(config.sys, "prefix", "/some/unrelated/venv"), \
patch.object(config.sys, "executable", ""):
assert config.is_uv_tool_install() is False
# ---------------------------------------------------------------------------
# recommended_update_command_for_method
# ---------------------------------------------------------------------------
class TestRecommendedUpdateCommandForUvTool:
def test_uv_tool_install_recommends_uv_tool_upgrade(self):
from hermes_cli import config
with patch("shutil.which", return_value="/usr/local/bin/uv"), \
patch.object(config, "is_uv_tool_install", return_value=True):
cmd = config.recommended_update_command_for_method("pip")
assert cmd == "uv tool upgrade hermes-agent"
def test_uv_tool_install_recommends_uv_tool_upgrade_even_without_uv_on_path(self):
"""Recommendation reflects the *install method*, not whether ``uv`` is
currently on PATH — the user needs to know the right command to run."""
from hermes_cli import config
with patch("shutil.which", return_value=None), \
patch.object(config, "is_uv_tool_install", return_value=True):
cmd = config.recommended_update_command_for_method("pip")
assert cmd == "uv tool upgrade hermes-agent"
def test_uv_pip_install_keeps_legacy_recommendation(self):
"""Existing behavior: uv is on PATH but Hermes is a regular pip install."""
from hermes_cli import config
with patch("shutil.which", return_value="/usr/local/bin/uv"), \
patch.object(config, "is_uv_tool_install", return_value=False):
cmd = config.recommended_update_command_for_method("pip")
assert cmd == "uv pip install --upgrade hermes-agent"
def test_no_uv_falls_back_to_plain_pip(self):
from hermes_cli import config
with patch("shutil.which", return_value=None), \
patch.object(config, "is_uv_tool_install", return_value=False):
cmd = config.recommended_update_command_for_method("pip")
assert cmd == "pip install --upgrade hermes-agent"
def test_recommendation_does_not_spawn_subprocess(self):
"""Computing the recommendation string must be cheap — no ``uv tool list``
spawn. Copilot review on PR #29703 flagged the prior subprocess hop
as adding overhead and a multi-second timeout window for what is
purely a display string."""
from hermes_cli import config
with patch.object(config.sys, "prefix", "/some/unrelated/venv"), \
patch.object(config.sys, "executable", "/usr/bin/python3"), \
patch("shutil.which", return_value="/usr/local/bin/uv"), \
patch("subprocess.run") as mock_run:
cmd = config.recommended_update_command_for_method("pip")
mock_run.assert_not_called()
assert cmd == "uv pip install --upgrade hermes-agent"
# ---------------------------------------------------------------------------
# _cmd_update_pip subprocess command
# ---------------------------------------------------------------------------
class TestCmdUpdatePipUsesUvTool:
@patch("subprocess.run")
def test_runs_uv_tool_upgrade_when_uv_tool_install(self, mock_run):
"""The actual subprocess invocation must switch to ``uv tool upgrade``."""
from hermes_cli.main import _cmd_update_pip
mock_run.return_value = subprocess.CompletedProcess(["uv"], 0, stdout="", stderr="")
with patch("shutil.which", return_value="/usr/local/bin/uv"), \
patch("hermes_cli.config.is_uv_tool_install", return_value=True):
_cmd_update_pip(SimpleNamespace())
assert mock_run.call_args[0][0] == ["/usr/local/bin/uv", "tool", "upgrade", "hermes-agent"]
@patch("subprocess.run")
def test_runs_uv_pip_install_when_not_uv_tool(self, mock_run):
"""Existing behavior preserved when uv is present but Hermes isn't a tool install."""
from hermes_cli.main import _cmd_update_pip
mock_run.return_value = subprocess.CompletedProcess(["uv"], 0, stdout="", stderr="")
with patch("shutil.which", return_value="/usr/local/bin/uv"), \
patch("hermes_cli.config.is_uv_tool_install", return_value=False):
_cmd_update_pip(SimpleNamespace())
assert mock_run.call_args[0][0] == [
"/usr/local/bin/uv",
"pip",
"install",
"--upgrade",
"hermes-agent",
]
@patch("subprocess.run")
def test_falls_back_to_pip_when_no_uv(self, mock_run):
from hermes_cli.main import _cmd_update_pip
mock_run.return_value = subprocess.CompletedProcess(["pip"], 0, stdout="", stderr="")
with patch("shutil.which", return_value=None), \
patch("hermes_cli.config.is_uv_tool_install", return_value=False):
_cmd_update_pip(SimpleNamespace())
cmd = mock_run.call_args[0][0]
assert cmd[1:] == ["-m", "pip", "install", "--upgrade", "hermes-agent"]
@patch("subprocess.run")
def test_exits_nonzero_on_subprocess_failure(self, mock_run):
from hermes_cli.main import _cmd_update_pip
mock_run.return_value = subprocess.CompletedProcess(["uv"], 1, stdout="", stderr="")
with patch("shutil.which", return_value="/usr/local/bin/uv"), \
patch("hermes_cli.config.is_uv_tool_install", return_value=True):
with pytest.raises(SystemExit) as exc_info:
_cmd_update_pip(SimpleNamespace())
assert exc_info.value.code == 1
@patch("subprocess.run")
def test_uv_tool_install_without_uv_on_path_exits_with_hint(self, mock_run):
"""If the running interpreter looks like a uv-tool install but ``uv`` is
somehow missing from PATH, surface a clear hint instead of silently
falling back to ``python -m pip``, which would either fail (no venv)
or upgrade the wrong copy."""
from hermes_cli.main import _cmd_update_pip
with patch("shutil.which", return_value=None), \
patch("hermes_cli.config.is_uv_tool_install", return_value=True):
with pytest.raises(SystemExit) as exc_info:
_cmd_update_pip(SimpleNamespace())
assert exc_info.value.code == 1
mock_run.assert_not_called()
# ---------------------------------------------------------------------------
# pipx-managed installs, --system fallback, and VIRTUAL_ENV overlay
# (issue #29700 / #35031 family — consolidated update-path handling)
# ---------------------------------------------------------------------------
class TestCmdUpdatePipInstallLayouts:
"""The uv pip path must adapt to where the running interpreter lives:
- inside a venv (launcher shim) -> export VIRTUAL_ENV, no ``--system``
- bare pip outside any venv -> add ``--system``, no overlay
- pipx-managed -> ``pipx upgrade``
"""
@patch("subprocess.run")
def test_pipx_managed_uses_pipx_upgrade(self, mock_run, monkeypatch):
from hermes_cli import main as hm
mock_run.return_value = subprocess.CompletedProcess([], 0, stdout="", stderr="")
monkeypatch.setattr(hm.sys, "prefix", "/home/u/.local/pipx/venvs/hermes-agent")
monkeypatch.setattr(hm.sys, "base_prefix", "/usr")
def _which(name):
return {"uv": "/usr/bin/uv", "pipx": "/usr/bin/pipx"}.get(name)
with patch("shutil.which", side_effect=_which), \
patch("hermes_cli.config.is_uv_tool_install", return_value=False):
hm._cmd_update_pip(SimpleNamespace())
assert mock_run.call_args[0][0] == ["/usr/bin/pipx", "upgrade", "hermes-agent"]
# pipx upgrade ignores VIRTUAL_ENV; we must not set it.
assert "env" not in mock_run.call_args.kwargs
@patch("subprocess.run")
def test_pipx_layout_without_pipx_binary_treated_as_venv(
self, mock_run, monkeypatch
):
from hermes_cli import main as hm
mock_run.return_value = subprocess.CompletedProcess([], 0, stdout="", stderr="")
monkeypatch.setattr(hm.sys, "prefix", "/home/u/.local/pipx/venvs/hermes-agent")
monkeypatch.setattr(hm.sys, "base_prefix", "/usr")
# pipx layout detected via prefix, but pipx binary missing on PATH.
def _which(name):
return "/usr/bin/uv" if name == "uv" else None
with patch("shutil.which", side_effect=_which), \
patch("hermes_cli.config.is_uv_tool_install", return_value=False):
hm._cmd_update_pip(SimpleNamespace())
# prefix != base_prefix, so this is treated as a venv -> overlay, no --system.
assert mock_run.call_args[0][0] == [
"/usr/bin/uv", "pip", "install", "--upgrade", "hermes-agent",
]
assert mock_run.call_args.kwargs["env"]["VIRTUAL_ENV"].endswith("hermes-agent")
@patch("subprocess.run")
def test_bare_pip_outside_venv_adds_system(self, mock_run, monkeypatch):
from hermes_cli import main as hm
mock_run.return_value = subprocess.CompletedProcess([], 0, stdout="", stderr="")
# No venv: prefix == base_prefix.
monkeypatch.setattr(hm.sys, "prefix", "/usr")
monkeypatch.setattr(hm.sys, "base_prefix", "/usr")
with patch("shutil.which", return_value="/usr/bin/uv"), \
patch("hermes_cli.config.is_uv_tool_install", return_value=False):
hm._cmd_update_pip(SimpleNamespace())
assert mock_run.call_args[0][0] == [
"/usr/bin/uv", "pip", "install", "--system", "--upgrade", "hermes-agent",
]
assert "env" not in mock_run.call_args.kwargs
@patch("subprocess.run")
def test_venv_exports_virtualenv_and_omits_system(self, mock_run, monkeypatch):
from hermes_cli import main as hm
mock_run.return_value = subprocess.CompletedProcess([], 0, stdout="", stderr="")
monkeypatch.delenv("VIRTUAL_ENV", raising=False)
monkeypatch.setattr(hm.sys, "prefix", "/home/u/.hermes/hermes-agent/venv")
monkeypatch.setattr(hm.sys, "base_prefix", "/usr")
with patch("shutil.which", return_value="/usr/bin/uv"), \
patch("hermes_cli.config.is_uv_tool_install", return_value=False):
hm._cmd_update_pip(SimpleNamespace())
cmd = mock_run.call_args[0][0]
assert "--system" not in cmd
assert cmd == ["/usr/bin/uv", "pip", "install", "--upgrade", "hermes-agent"]
assert mock_run.call_args.kwargs["env"]["VIRTUAL_ENV"] == "/home/u/.hermes/hermes-agent/venv"