ref: Add ALL ruff rules for tests

pyproject.toml

@@ -216,6 +216,43 @@ directory = "coverage"
 exclude = ["src/backend/langflow/alembic/*"]
 line-length = 120
 
+[tool.ruff.lint]
+pydocstyle.convention = "google"
+select = ["ALL"]
+ignore = [
+    "C90", # McCabe complexity
+    "CPY", # Missing copyright
+    "COM812", # Messes with the formatter
+    "ERA", # Eradicate commented-out code
+    "FIX002", # Line contains TODO
+    "ISC001", # Messes with the formatter
+    "PERF203", # Rarely useful
+    "PLR09", # Too many something (arg, statements, etc)
+    "RUF012", # Pydantic models are currently not well detected. See https://github.com/astral-sh/ruff/issues/13630
+    "TD002", # Missing author in TODO
+    "TD003", # Missing issue link in TODO
+    "TRY301", # A bit too harsh (Abstract `raise` to an inner function)
+
+    # Rules that are TODOs
+    "ANN",
+]
+
+# Preview rules that are not yet activated
+external = ["RUF027"]
+
+[tool.ruff.lint.per-file-ignores]
+"scripts/*" = [
+    "D1",
+    "INP",
+    "T201",
+]
+"src/backend/tests/*" = [
+    "D1",
+    "PLR2004",
+    "S101",
+    "SLF001",
+]
+
 [tool.mypy]
 plugins = ["pydantic.mypy"]
 follow_imports = "skip"

scripts/ci/pypi_nightly_tag.py

@@ -12,8 +12,10 @@
 PYPI_LANGFLOW_BASE_URL = "https://pypi.org/pypi/langflow-base/json"
 PYPI_LANGFLOW_BASE_NIGHTLY_URL = "https://pypi.org/pypi/langflow-base-nightly/json"
 
+ARGUMENT_NUMBER = 2
 
-def get_latest_published_version(build_type: str, is_nightly: bool) -> Version:
+
+def get_latest_published_version(build_type: str, *, is_nightly: bool) -> Version:
     import requests
 
     url = ""
@@ -25,12 +27,12 @@ def get_latest_published_version(build_type: str, is_nightly: bool) -> Version:
         msg = f"Invalid build type: {build_type}"
         raise ValueError(msg)
 
-    res = requests.get(url)
+    res = requests.get(url, timeout=10)
     try:
         version_str = res.json()["info"]["version"]
     except Exception as e:
         msg = "Got unexpected response from PyPI"
-        raise RuntimeError(msg, e)
+        raise RuntimeError(msg) from e
     return Version(version_str)
 
 
@@ -74,9 +76,9 @@ def create_tag(build_type: str):
 
 
 if __name__ == "__main__":
-    if len(sys.argv) != 2:
+    if len(sys.argv) != ARGUMENT_NUMBER:
         msg = "Specify base or main"
-        raise Exception(msg)
+        raise ValueError(msg)
 
     build_type = sys.argv[1]
     tag = create_tag(build_type)

scripts/ci/update_lf_base_dependency.py

@@ -1,10 +1,13 @@
+#!/usr/bin/env python
+
 import re
 import sys
 from pathlib import Path
 
 import packaging.version
 
 BASE_DIR = Path(__file__).parent.parent.parent
+ARGUMENT_NUMBER = 2
 
 
 def update_base_dep(pyproject_path: str, new_version: str) -> None:
@@ -18,7 +21,7 @@ def update_base_dep(pyproject_path: str, new_version: str) -> None:
     pattern = re.compile(r'langflow-base = \{ path = "\./src/backend/base", develop = true \}')
     if not pattern.search(content):
         msg = f'langflow-base poetry dependency not found in "{filepath}"'
-        raise Exception(msg)
+        raise ValueError(msg)
     content = pattern.sub(replacement, content)
     filepath.write_text(content, encoding="utf-8")
 
@@ -28,16 +31,13 @@ def verify_pep440(version):
 
     https://github.com/pypa/packaging/blob/16.7/packaging/version.py#L191
     """
-    try:
-        return packaging.version.Version(version)
-    except packaging.version.InvalidVersion:
-        raise
+    return packaging.version.Version(version)
 
 
 def main() -> None:
-    if len(sys.argv) != 2:
+    if len(sys.argv) != ARGUMENT_NUMBER:
         msg = "New version not specified"
-        raise Exception(msg)
+        raise ValueError(msg)
     base_version = sys.argv[1]
 
     # Strip "v" prefix from version if present

scripts/ci/update_pyproject_name.py

@@ -1,8 +1,11 @@
+#!/usr/bin/env python
+
 import re
 import sys
 from pathlib import Path
 
 BASE_DIR = Path(__file__).parent.parent.parent
+ARGUMENT_NUMBER = 3
 
 
 def update_pyproject_name(pyproject_path: str, new_project_name: str) -> None:
@@ -15,7 +18,7 @@ def update_pyproject_name(pyproject_path: str, new_project_name: str) -> None:
 
     if not pattern.search(content):
         msg = f'Project name not found in "{filepath}"'
-        raise Exception(msg)
+        raise ValueError(msg)
     content = pattern.sub(new_project_name, content)
 
     filepath.write_text(content, encoding="utf-8")
@@ -39,15 +42,15 @@ def update_uv_dep(pyproject_path: str, new_project_name: str) -> None:
     # Updates the dependency name for uv
     if not pattern.search(content):
         msg = f"{replacement} uv dependency not found in {filepath}"
-        raise Exception(msg)
+        raise ValueError(msg)
     content = pattern.sub(replacement, content)
     filepath.write_text(content, encoding="utf-8")
 
 
 def main() -> None:
-    if len(sys.argv) != 3:
+    if len(sys.argv) != ARGUMENT_NUMBER:
         msg = "Must specify project name and build type, e.g. langflow-nightly base"
-        raise Exception(msg)
+        raise ValueError(msg)
     new_project_name = sys.argv[1]
     build_type = sys.argv[2]
 

scripts/ci/update_pyproject_version.py

@@ -1,10 +1,13 @@
+#!/usr/bin/env python
+
 import re
 import sys
 from pathlib import Path
 
 import packaging.version
 
 BASE_DIR = Path(__file__).parent.parent.parent
+ARGUMENT_NUMBER = 3
 
 
 def update_pyproject_version(pyproject_path: str, new_version: str) -> None:
@@ -17,7 +20,7 @@ def update_pyproject_version(pyproject_path: str, new_version: str) -> None:
 
     if not pattern.search(content):
         msg = f'Project version not found in "{filepath}"'
-        raise Exception(msg)
+        raise ValueError(msg)
 
     content = pattern.sub(new_version, content)
 
@@ -29,16 +32,13 @@ def verify_pep440(version):
 
     https://github.com/pypa/packaging/blob/16.7/packaging/version.py#L191
     """
-    try:
-        return packaging.version.Version(version)
-    except packaging.version.InvalidVersion:
-        raise
+    return packaging.version.Version(version)
 
 
 def main() -> None:
-    if len(sys.argv) != 3:
+    if len(sys.argv) != ARGUMENT_NUMBER:
         msg = "New version not specified"
-        raise Exception(msg)
+        raise ValueError(msg)
     new_version = sys.argv[1]
 
     # Strip "v" prefix from version if present

scripts/ci/update_uv_dependency.py

@@ -1,8 +1,11 @@
+#!/usr/bin/env python
+
 import re
 import sys
 from pathlib import Path
 
 BASE_DIR = Path(__file__).parent.parent.parent
+ARGUMENT_NUMBER = 2
 
 
 def update_uv_dep(base_version: str) -> None:
@@ -19,7 +22,7 @@ def update_uv_dep(base_version: str) -> None:
     # Check if the pattern is found
     if not pattern.search(content):
         msg = f"{pattern} UV dependency not found in {pyproject_path}"
-        raise Exception(msg)
+        raise ValueError(msg)
 
     # Replace the matched pattern with the new one
     content = pattern.sub(replacement, content)
@@ -29,9 +32,9 @@ def update_uv_dep(base_version: str) -> None:
 
 
 def main() -> None:
-    if len(sys.argv) != 2:
+    if len(sys.argv) != ARGUMENT_NUMBER:
         msg = "specify base version"
-        raise Exception(msg)
+        raise ValueError(msg)
     base_version = sys.argv[1]
     base_version = base_version.lstrip("v")
     update_uv_dep(base_version)

src/backend/base/langflow/custom/custom_component/component.py

@@ -12,7 +12,7 @@
 
 from langflow.base.tools.constants import TOOL_OUTPUT_NAME
 from langflow.custom.tree_visitor import RequiredInputsVisitor
-from langflow.field_typing import Tool  # noqa: TCH001 Needed by add_toolkit_output
+from langflow.field_typing import Tool  # noqa: TCH001 Needed by _add_toolkit_output
 from langflow.graph.state.model import create_state_model
 from langflow.helpers.custom import format_type
 from langflow.schema.artifact import get_artifact_type, post_process_raw

src/backend/langflow/version/__init__.py

@@ -0,0 +1 @@
+"""Version package."""

src/backend/langflow/version/version.py

@@ -1,8 +1,11 @@
+"""Module for package versioning."""
+
 import contextlib
 
 
 def get_version() -> str:
     """Retrieves the version of the package from a possible list of package names.
+
     This accounts for after package names are updated for -nightly builds.
 
     Returns:
@@ -32,7 +35,9 @@ def get_version() -> str:
 
 
 def is_pre_release(v: str) -> bool:
-    """Returns a boolean indicating whether the version is a pre-release version,
+    """Returns a boolean indicating whether the version is a pre-release version.
+
+    Returns a boolean indicating whether the version is a pre-release version,
     as per the definition of a pre-release segment from PEP 440.
     """
     return any(label in v for label in ["a", "b", "rc"])

src/backend/tests/conftest.py

@@ -28,7 +28,6 @@
 from langflow.services.database.utils import session_getter
 from langflow.services.deps import get_db_service
 from loguru import logger
-from pytest import LogCaptureFixture
 from sqlmodel import Session, SQLModel, create_engine, select
 from sqlmodel.pool import StaticPool
 from typer.testing import CliRunner
@@ -102,7 +101,7 @@ def _delete_transactions_and_vertex_builds(session, user: User):
 
 
 @pytest.fixture
-def caplog(caplog: LogCaptureFixture):
+def caplog(caplog: pytest.LogCaptureFixture):
     handler_id = logger.add(
         caplog.handler,
         format="{message}",
@@ -144,7 +143,7 @@ def load_flows_dir():
 
 
 @pytest.fixture(name="distributed_env")
-def setup_env(monkeypatch):
+def _setup_env(monkeypatch):
     monkeypatch.setenv("LANGFLOW_CACHE_TYPE", "redis")
     monkeypatch.setenv("LANGFLOW_REDIS_HOST", "result_backend")
     monkeypatch.setenv("LANGFLOW_REDIS_PORT", "6379")
@@ -158,7 +157,11 @@ def setup_env(monkeypatch):
 
 
 @pytest.fixture(name="distributed_client")
-def distributed_client_fixture(session: Session, monkeypatch, distributed_env):
+def distributed_client_fixture(
+    session: Session,  # noqa: ARG001
+    monkeypatch,
+    distributed_env,  # noqa: ARG001
+):
     # Here we load the .env from ../deploy/.env
     from langflow.core import celery_app
 
@@ -273,7 +276,12 @@ def json_memory_chatbot_no_llm():
 
 
 @pytest.fixture(name="client")
-async def client_fixture(session: Session, monkeypatch, request, load_flows_dir):
+async def client_fixture(
+    session: Session,  # noqa: ARG001
+    monkeypatch,
+    request,
+    load_flows_dir,
+):
     # Set the database url to a test database
     if "noclient" in request.keywords:
         yield
@@ -296,9 +304,11 @@ async def client_fixture(session: Session, monkeypatch, request, load_flows_dir)
         db_service.database_url = f"sqlite:///{db_path}"
         db_service.reload_engine()
         # app.dependency_overrides[get_session] = get_session_override
-        async with LifespanManager(app, startup_timeout=None, shutdown_timeout=None) as manager:
-            async with AsyncClient(transport=ASGITransport(app=manager.app), base_url="http://testserver/") as client:
-                yield client
+        async with (
+            LifespanManager(app, startup_timeout=None, shutdown_timeout=None) as manager,
+            AsyncClient(transport=ASGITransport(app=manager.app), base_url="http://testserver/") as client,
+        ):
+            yield client
         # app.dependency_overrides.clear()
         monkeypatch.undo()
         # clear the temp db
@@ -308,7 +318,7 @@ async def client_fixture(session: Session, monkeypatch, request, load_flows_dir)
 
 # create a fixture for session_getter above
 @pytest.fixture(name="session_getter")
-def session_getter_fixture(client):
+def session_getter_fixture(client):  # noqa: ARG001
     @contextmanager
     def blank_session_getter(db_service: "DatabaseService"):
         with Session(db_service.engine) as session:
@@ -326,7 +336,7 @@ def runner():
 async def test_user(client):
     user_data = UserCreate(
         username="testuser",
-        password="testpassword",
+        password="testpassword",  # noqa: S106
     )
     response = await client.post("api/v1/users/", json=user_data.model_dump())
     assert response.status_code == 201
@@ -337,7 +347,7 @@ async def test_user(client):
 
 
 @pytest.fixture
-def active_user(client):
+def active_user(client):  # noqa: ARG001
     db_manager = get_db_service()
     with db_manager.with_session() as session:
         user = User(
@@ -375,7 +385,11 @@ async def logged_in_headers(client, active_user):
 
 
 @pytest.fixture
-def flow(client, json_flow: str, active_user):
+def flow(
+    client,  # noqa: ARG001
+    json_flow: str,
+    active_user,
+):
     from langflow.services.database.models.flow.model import FlowCreate
 
     loaded_json = json.loads(json_flow)

src/backend/tests/data/component.py

@@ -7,7 +7,7 @@ class TestComponent(CustomComponent):
     def refresh_values(self):
         # This is a function that will be called every time the component is updated
         # and should return a list of random strings
-        return [f"Random {random.randint(1, 100)}" for _ in range(5)]
+        return [f"Random {random.randint(1, 100)}" for _ in range(5)]  # noqa: S311
 
     def build_config(self):
         return {"param": {"display_name": "Param", "options": self.refresh_values}}