Paul Payne
26a00c4073
A python-runner service ran from a tool venv (uv tool install --editable), separate from the project venv that uv sync manages. The editable link kept source live, but dependencies were resolved independently in each venv, so a new dependency landed in the project venv and never reached the running service — leaving no clean rollout for it. Deploy now emits ExecStart=uv run --project <source> --no-dev <program>, running the service in place from its own project venv. uv run syncs the env to the lockfile before launching, so a single restart picks up both code and dependency changes; the ExecStart is deterministic from source and never goes stale. The tool-venv install is gated to the command runner only; uv tool install is reserved for tool-behavior programs, where PATH is the point. A python service with no resolvable source falls back to a PATH lookup.
51 lines
2.0 KiB
Python
51 lines
2.0 KiB
Python
"""Tests for `_build_run_cmd` — the python runner runs in place via `uv run`."""
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from __future__ import annotations
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from pathlib import Path
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from unittest.mock import patch
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from castle_core.deploy import _build_run_cmd
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from castle_core.manifest import RunPython
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def test_python_runner_uses_uv_run_from_source(tmp_path: Path) -> None:
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"""A python service with a real source dir launches via `uv run --project`."""
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run = RunPython(runner="python", program="my-svc")
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with patch("castle_core.deploy.shutil.which", return_value="/usr/bin/uv"):
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cmd = _build_run_cmd("my-svc", run, {}, [], source_dir=tmp_path)
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assert cmd == [
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"/usr/bin/uv",
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"run",
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"--project",
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str(tmp_path),
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"--no-dev",
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"my-svc",
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]
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def test_python_runner_appends_args(tmp_path: Path) -> None:
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run = RunPython(runner="python", program="my-svc", args=["--flag", "x"])
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with patch("castle_core.deploy.shutil.which", return_value="/usr/bin/uv"):
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cmd = _build_run_cmd("my-svc", run, {}, [], source_dir=tmp_path)
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assert cmd[-2:] == ["--flag", "x"]
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assert cmd[:5] == ["/usr/bin/uv", "run", "--project", str(tmp_path), "--no-dev"]
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def test_python_runner_falls_back_to_path_without_source() -> None:
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"""No resolvable source → PATH lookup of the script (no uv run)."""
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run = RunPython(runner="python", program="my-svc")
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with patch("castle_core.deploy.shutil.which", return_value="/home/u/.local/bin/my-svc"):
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cmd = _build_run_cmd("my-svc", run, {}, [], source_dir=None)
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assert cmd == ["/home/u/.local/bin/my-svc"]
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def test_python_runner_warns_when_unresolvable() -> None:
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"""No source and not on PATH → a warning, bare program name as last resort."""
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run = RunPython(runner="python", program="my-svc")
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messages: list[str] = []
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with patch("castle_core.deploy.shutil.which", return_value=None):
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cmd = _build_run_cmd("my-svc", run, {}, messages, source_dir=None)
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assert cmd == ["my-svc"]
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assert any("my-svc" in m for m in messages)
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