deer-flow/backend/tests/test_detect_uv_extras.py
Xinmin Zeng 94da8f67d7
fix(scripts): preserve uv extras across make dev restarts (#2754) (#2767)
`make dev` ran `uv sync` unconditionally on every restart, wiping any
optional extras the user had installed manually with
`uv sync --all-packages --extra postgres`. The Docker image-build path
already solved this via the `UV_EXTRAS` build-arg in backend/Dockerfile;
the local serve.sh path and the docker-compose-dev startup command
were the remaining outliers.

`scripts/serve.sh` now resolves extras before `uv sync`:
  1. honors `UV_EXTRAS` (parity with backend/Dockerfile and
     docker/docker-compose.yaml — no new convention introduced);
  2. falls back to parsing config.yaml — `database.backend: postgres`
     or legacy `checkpointer.type: postgres` auto-pins
     `--extra postgres`, so the common case needs zero extra config.
  3. detector stderr is no longer suppressed, so whitelist warnings or
     crashes surface to the dev terminal (review feedback).

Detection lives in `scripts/detect_uv_extras.py` (stdlib-only — has to
run before the venv exists). Extra names are validated against
`^[A-Za-z][A-Za-z0-9_-]*$` so a stray shell metacharacter in `.env`
cannot reach `uv sync` downstream (defense in depth).

`docker/docker-compose-dev.yaml`'s startup command is now extracted to
`docker/dev-entrypoint.sh` (review feedback — the inline command had
grown to a ~350-char one-liner). The script:
  - parses comma/whitespace-separated UV_EXTRAS, applying the same
    `^[A-Za-z][A-Za-z0-9_-]*$` whitelist as the local detector;
  - emits one `--extra X` flag per token, so `UV_EXTRAS=postgres,ollama`
    works in Docker dev too (harmonized with local — review feedback);
  - calls `uv sync --all-packages` (PR #2584) so workspace member
    extras (deerflow-harness's postgres extra) are installed;
  - keeps the existing self-heal `(uv sync || (recreate venv && retry))`
    branch;
  - exposes `--print-extras` for dry-run testing.

The compose file mounts the script read-only at runtime, so script
edits take effect on `make docker-restart` without an image rebuild.

The `--no-sync` alternative (a separate suggestion in the issue thread)
was considered but rejected for dev paths because it would drop the
self-heal branch and the auto-pickup of new pyproject deps. `--no-sync`
is already in use for the production CMD (`backend/Dockerfile:101`)
where it's appropriate.

Updates the asyncpg-missing error message to include the
`--all-packages` flag (matching #2584) plus the persistent install flow,
and expands `config.example.yaml` so all three install paths
(local / docker dev / docker image build) are documented with their
multi-extra capabilities.

Tests:
  - `tests/test_detect_uv_extras.py` (21 tests) — local-path env parsing,
    YAML edge cases, env-vs-config precedence, whitelist rejection of
    shell metacharacters.
  - `tests/test_dev_entrypoint.py` (15 tests) — docker-path validation
    via `--print-extras`, multi-extra parsing, metacharacter abort.
  - `tests/test_persistence_scaffold.py` (22 tests, unchanged) — passes
    with the merged `--all-packages --extra postgres` error message.

Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
2026-05-10 22:28:29 +08:00

202 lines
7.6 KiB
Python

"""Unit tests for scripts/detect_uv_extras.py.
The detector resolves uv extras for `make dev` so that postgres (and any
future opt-in extras) are not wiped on every restart — see Issue #2754.
"""
from __future__ import annotations
import importlib.util
from pathlib import Path
import pytest
REPO_ROOT = Path(__file__).resolve().parents[2]
DETECT_SCRIPT_PATH = REPO_ROOT / "scripts" / "detect_uv_extras.py"
spec = importlib.util.spec_from_file_location("deerflow_detect_uv_extras", DETECT_SCRIPT_PATH)
assert spec is not None and spec.loader is not None
detect = importlib.util.module_from_spec(spec)
spec.loader.exec_module(detect)
@pytest.fixture
def isolated_cwd(tmp_path, monkeypatch):
"""Isolate `find_config_file()` from the real repo by chdir + clearing env."""
monkeypatch.chdir(tmp_path)
monkeypatch.delenv("UV_EXTRAS", raising=False)
monkeypatch.delenv("DEER_FLOW_CONFIG_PATH", raising=False)
return tmp_path
def test_parse_env_extras_supports_comma_and_whitespace():
assert detect.parse_env_extras("postgres") == ["postgres"]
assert detect.parse_env_extras("postgres,ollama") == ["postgres", "ollama"]
assert detect.parse_env_extras("postgres ollama") == ["postgres", "ollama"]
assert detect.parse_env_extras(" postgres , ollama ,") == ["postgres", "ollama"]
assert detect.parse_env_extras("") == []
def test_parse_env_extras_drops_shell_metacharacters(capsys):
"""A `.env` value containing shell injection bait must not pass through.
The whitelist guarantees the *bytes* that reach `uv sync` cannot include
shell metacharacters. Any name that looks identifier-like still survives
(uv itself will reject unknown extras with its own error), but `;`, `&`,
backticks, parentheses, slashes, etc. are stripped.
"""
# Pure-metacharacter inputs collapse to empty.
assert detect.parse_env_extras(";") == []
assert detect.parse_env_extras("$(whoami)") == []
assert detect.parse_env_extras("`echo bad`") == []
assert detect.parse_env_extras("postgres;evil") == [] # single token, contains `;`
# Splitting on whitespace yields ['rm'] which is identifier-shaped, but the
# destructive bits (`;`, `-rf`, `/`) are dropped.
assert detect.parse_env_extras("; rm -rf /") == ["rm"]
err = capsys.readouterr().err
assert "ignoring invalid UV_EXTRAS entry" in err
assert "';'" in err # confirms the dangerous token was reported and dropped
def test_parse_env_extras_rejects_leading_digits_and_punctuation():
"""Names must start with a letter — pyproject extras follow this shape."""
assert detect.parse_env_extras("1postgres") == []
assert detect.parse_env_extras("-postgres") == []
# Hyphens and underscores inside the name are fine.
assert detect.parse_env_extras("post_gres") == ["post_gres"]
assert detect.parse_env_extras("post-gres") == ["post-gres"]
def test_format_flags_emits_one_flag_per_extra():
assert detect.format_flags([]) == ""
assert detect.format_flags(["postgres"]) == "--extra postgres"
assert detect.format_flags(["postgres", "ollama"]) == "--extra postgres --extra ollama"
def test_strip_comment_preserves_quoted_hash():
assert detect._strip_comment("backend: postgres # trailing") == "backend: postgres"
assert detect._strip_comment('name: "value#with-hash"') == 'name: "value#with-hash"'
assert detect._strip_comment("# whole line comment") == ""
def test_section_value_finds_nested_key():
yaml_lines = [
"database:",
" backend: postgres",
" postgres_url: $DATABASE_URL",
"",
"checkpointer:",
" type: sqlite",
]
assert detect.section_value(yaml_lines, "database", "backend") == "postgres"
assert detect.section_value(yaml_lines, "checkpointer", "type") == "sqlite"
assert detect.section_value(yaml_lines, "database", "missing") is None
assert detect.section_value(yaml_lines, "absent_section", "anything") is None
def test_section_value_ignores_commented_lines():
yaml_lines = [
"# database:",
"# backend: postgres",
"database:",
" backend: sqlite",
]
assert detect.section_value(yaml_lines, "database", "backend") == "sqlite"
def test_section_value_strips_quotes():
yaml_lines = [
"database:",
' backend: "postgres"',
]
assert detect.section_value(yaml_lines, "database", "backend") == "postgres"
def test_section_value_does_not_descend_into_grandchildren():
yaml_lines = [
"database:",
" backend: sqlite",
" nested:",
" backend: postgres",
]
# Only the immediate child level counts — keeps the parser predictable.
assert detect.section_value(yaml_lines, "database", "backend") == "sqlite"
def test_detect_from_config_postgres_via_database(tmp_path):
cfg = tmp_path / "config.yaml"
cfg.write_text("database:\n backend: postgres\n postgres_url: $DATABASE_URL\n")
assert detect.detect_from_config(cfg) == ["postgres"]
def test_detect_from_config_postgres_via_checkpointer(tmp_path):
cfg = tmp_path / "config.yaml"
cfg.write_text("checkpointer:\n type: postgres\n connection_string: postgresql://localhost/db\n")
assert detect.detect_from_config(cfg) == ["postgres"]
def test_detect_from_config_sqlite_returns_no_extras(tmp_path):
cfg = tmp_path / "config.yaml"
cfg.write_text("database:\n backend: sqlite\n sqlite_dir: .deer-flow/data\n")
assert detect.detect_from_config(cfg) == []
def test_detect_from_config_dedupes_when_both_present(tmp_path):
cfg = tmp_path / "config.yaml"
cfg.write_text("checkpointer:\n type: postgres\ndatabase:\n backend: postgres\n")
# Sorted unique extras, no double-counting.
assert detect.detect_from_config(cfg) == ["postgres"]
def test_detect_from_config_missing_file_returns_empty(tmp_path):
assert detect.detect_from_config(tmp_path / "does-not-exist.yaml") == []
def test_resolve_extras_env_overrides_config(isolated_cwd, monkeypatch):
cfg = isolated_cwd / "config.yaml"
cfg.write_text("database:\n backend: sqlite\n")
monkeypatch.setenv("UV_EXTRAS", "postgres")
assert detect.resolve_extras() == ["postgres"]
def test_resolve_extras_env_supports_multiple(isolated_cwd, monkeypatch):
monkeypatch.setenv("UV_EXTRAS", "postgres,ollama")
assert detect.resolve_extras() == ["postgres", "ollama"]
def test_resolve_extras_falls_back_to_config(isolated_cwd):
(isolated_cwd / "config.yaml").write_text("database:\n backend: postgres\n")
assert detect.resolve_extras() == ["postgres"]
def test_resolve_extras_respects_explicit_config_path(tmp_path, monkeypatch):
monkeypatch.delenv("UV_EXTRAS", raising=False)
elsewhere = tmp_path / "elsewhere.yaml"
elsewhere.write_text("database:\n backend: postgres\n")
monkeypatch.chdir(tmp_path)
monkeypatch.setenv("DEER_FLOW_CONFIG_PATH", str(elsewhere))
assert detect.resolve_extras() == ["postgres"]
def test_resolve_extras_no_config_no_env(isolated_cwd):
assert detect.resolve_extras() == []
def test_resolve_extras_finds_backend_subdir_config(isolated_cwd):
sub = isolated_cwd / "backend"
sub.mkdir()
(sub / "config.yaml").write_text("database:\n backend: postgres\n")
assert detect.resolve_extras() == ["postgres"]
def test_resolve_extras_root_config_takes_precedence(isolated_cwd):
(isolated_cwd / "config.yaml").write_text("database:\n backend: sqlite\n")
sub = isolated_cwd / "backend"
sub.mkdir()
(sub / "config.yaml").write_text("database:\n backend: postgres\n")
# Root config.yaml is checked first, matching the precedence in serve.sh.
assert detect.resolve_extras() == []