ref: Add ALL ruff rules for tests (#4183)

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_NIGHTLY_URL = "https://pypi.org/pypi/langflow-nightly/json"
 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

@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 import re
 import sys
 from pathlib import Path
@@ -5,6 +7,7 @@ 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

@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 import re
 import sys
 from pathlib import Path
@@ -5,6 +7,7 @@ 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 pydantic import BaseModel
 
 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.models.vertex_builds.crud import delete_vertex_b
 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}}

src/backend/tests/data/component_nested_call.py

@@ -16,7 +16,7 @@ class MultipleOutputsComponent(Component):
     ]
 
     def certain_output(self) -> int:
-        return randint(0, self.number)
+        return randint(0, self.number)  # noqa: S311
 
     def other_output(self) -> int:
         return self.certain_output()

src/backend/tests/data/component_with_templatefield.py

@@ -8,7 +8,7 @@ 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": Input(display_name="Param", options=self.refresh_values)}

src/backend/tests/integration/backward_compatibility/test_starter_projects.py

@@ -1,5 +1,6 @@
 import pytest
 from langflow.schema.message import Message
+
 from tests.api_keys import get_openai_api_key
 from tests.integration.utils import download_flow_from_github, run_json_flow
 

src/backend/tests/integration/components/assistants/test_assistants_components.py

@@ -1,4 +1,5 @@
 import pytest
+
 from tests.integration.utils import run_single_component
 
 

src/backend/tests/integration/components/astra/test_astra_component.py

@@ -6,6 +6,7 @@ from langchain_core.documents import Document
 from langflow.components.embeddings import OpenAIEmbeddingsComponent
 from langflow.components.vectorstores import AstraVectorStoreComponent
 from langflow.schema.data import Data
+
 from tests.api_keys import get_astradb_api_endpoint, get_astradb_application_token, get_openai_api_key
 from tests.integration.components.mock_components import TextToData
 from tests.integration.utils import ComponentInputHandle, run_single_component
@@ -27,7 +28,7 @@ ALL_COLLECTIONS = [
 
 
 @pytest.fixture
-def astradb_client(request):
+def astradb_client():
     client = AstraDB(api_endpoint=get_astradb_api_endpoint(), token=get_astradb_application_token())
     yield client
     for collection in ALL_COLLECTIONS:

src/backend/tests/integration/components/helpers/test_parse_json_data.py

@@ -2,6 +2,7 @@ import pytest
 from langflow.components.helpers.ParseJSONData import ParseJSONDataComponent
 from langflow.components.inputs import ChatInput
 from langflow.schema import Data
+
 from tests.integration.components.mock_components import TextToData
 from tests.integration.utils import ComponentInputHandle, run_single_component
 

src/backend/tests/integration/components/inputs/test_chat_input.py

@@ -2,6 +2,7 @@ import pytest
 from langflow.components.inputs import ChatInput
 from langflow.memory import get_messages
 from langflow.schema.message import Message
+
 from tests.integration.utils import run_single_component
 
 

src/backend/tests/integration/components/inputs/test_text_input.py

@@ -1,6 +1,7 @@
 import pytest
 from langflow.components.inputs import TextInputComponent
 from langflow.schema.message import Message
+
 from tests.integration.utils import run_single_component
 
 

src/backend/tests/integration/components/output_parsers/test_output_parser.py

@@ -4,6 +4,7 @@ import pytest
 from langflow.components.models.OpenAIModel import OpenAIModelComponent
 from langflow.components.output_parsers.OutputParser import OutputParserComponent
 from langflow.components.prompts.Prompt import PromptComponent
+
 from tests.integration.utils import ComponentInputHandle, run_single_component
 
 

src/backend/tests/integration/components/outputs/test_chat_output.py

@@ -2,6 +2,7 @@ import pytest
 from langflow.components.outputs import ChatOutput
 from langflow.memory import get_messages
 from langflow.schema.message import Message
+
 from tests.integration.utils import run_single_component
 
 

src/backend/tests/integration/components/outputs/test_text_output.py

@@ -1,6 +1,7 @@
 import pytest
 from langflow.components.outputs import TextOutputComponent
 from langflow.schema.message import Message
+
 from tests.integration.utils import run_single_component
 
 

src/backend/tests/integration/components/prompts/test_prompt.py

@@ -1,6 +1,7 @@
 import pytest
 from langflow.components.prompts import PromptComponent
 from langflow.schema.message import Message
+
 from tests.integration.utils import run_single_component
 
 

src/backend/tests/integration/flows/test_basic_prompting.py

@@ -4,18 +4,19 @@ from langflow.components.outputs import ChatOutput
 from langflow.components.prompts import PromptComponent
 from langflow.graph import Graph
 from langflow.schema.message import Message
+
 from tests.integration.utils import run_flow
 
 
 @pytest.mark.asyncio
 async def test_simple_no_llm():
     graph = Graph()
-    input = graph.add_component(ChatInput())
-    output = graph.add_component(ChatOutput())
+    flow_input = graph.add_component(ChatInput())
+    flow_output = graph.add_component(ChatOutput())
     component = PromptComponent(template="This is the message: {var1}", var1="")
     prompt = graph.add_component(component)
-    graph.add_component_edge(input, ("message", "var1"), prompt)
-    graph.add_component_edge(prompt, ("prompt", "input_value"), output)
+    graph.add_component_edge(flow_input, ("message", "var1"), prompt)
+    graph.add_component_edge(prompt, ("prompt", "input_value"), flow_output)
     outputs = await run_flow(graph, run_input="hello!")
     assert isinstance(outputs["message"], Message)
     assert outputs["message"].text == "This is the message: hello!"

src/backend/tests/integration/utils.py

@@ -12,26 +12,26 @@ from langflow.graph import Graph
 from langflow.processing.process import run_graph_internal
 
 
-def check_env_vars(*vars):
+def check_env_vars(*env_vars):
     """Check if all specified environment variables are set.
 
     Args:
-    *vars (str): The environment variables to check.
+    *env_vars (str): The environment variables to check.
 
     Returns:
     bool: True if all environment variables are set, False otherwise.
     """
-    return all(os.getenv(var) for var in vars)
+    return all(os.getenv(var) for var in env_vars)
 
 
 def valid_nvidia_vectorize_region(api_endpoint: str) -> bool:
     """Check if the specified region is valid.
 
     Args:
-    region (str): The region to check.
+        api_endpoint: The API endpoint to check.
 
     Returns:
-    bool: True if the region is contains hosted nvidia models, False otherwise.
+        True if the region contains hosted nvidia models, False otherwise.
     """
     parsed_endpoint = parse_api_endpoint(api_endpoint)
     if not parsed_endpoint:
@@ -63,12 +63,12 @@ class JSONFlow:
     json: dict
 
     def get_components_by_type(self, component_type):
-        result = []
-        for node in self.json["data"]["nodes"]:
-            if node["data"]["type"] == component_type:
-                result.append(node["id"])
+        result = [node["id"] for node in self.json["data"]["nodes"] if node["data"]["type"] == component_type]
         if not result:
-            msg = f"Component of type {component_type} not found, available types: {', '.join({node['data']['type'] for node in self.json['data']['nodes']})}"
+            msg = (
+                f"Component of type {component_type} not found, "
+                f"available types: {', '.join({node['data']['type'] for node in self.json['data']['nodes']})}"
+            )
             raise ValueError(msg)
         return result
 
@@ -97,7 +97,8 @@ class JSONFlow:
 
 def download_flow_from_github(name: str, version: str) -> JSONFlow:
     response = requests.get(
-        f"https://raw.githubusercontent.com/langflow-ai/langflow/v{version}/src/backend/base/langflow/initial_setup/starter_projects/{name}.json"
+        f"https://raw.githubusercontent.com/langflow-ai/langflow/v{version}/src/backend/base/langflow/initial_setup/starter_projects/{name}.json",
+        timeout=10,
     )
     response.raise_for_status()
     as_json = response.json()
@@ -151,7 +152,7 @@ async def run_single_component(
                     raw_inputs[key] = value
                 if isinstance(value, Component):
                     msg = "Component inputs must be wrapped in ComponentInputHandle"
-                    raise ValueError(msg)
+                    raise TypeError(msg)
         component = clazz(**raw_inputs, _user_id=user_id)
         component_id = graph.add_component(component)
         if inputs:

src/backend/tests/locust/locustfile.py

@@ -60,7 +60,7 @@ class NameTest(FastHttpUser):
 
     @task
     def send_name_and_check(self):
-        name = random.choice(self.names)
+        name = random.choice(self.names)  # noqa: S311
 
         payload1 = {
             "inputs": {"text": f"Hello, My name is {name}"},

src/backend/tests/unit/api/test_api_utils.py

@@ -17,7 +17,10 @@ def test_get_suggestion_message():
 
     # Test case 3: Multiple outdated components
     outdated_components = ["component1", "component2", "component3"]
-    expected_message = "The flow contains 3 outdated components. We recommend updating the following components: component1, component2, component3."
+    expected_message = (
+        "The flow contains 3 outdated components. "
+        "We recommend updating the following components: component1, component2, component3."
+    )
     assert get_suggestion_message(outdated_components) == expected_message
 
 

src/backend/tests/unit/api/v1/test_variable.py

@@ -75,7 +75,7 @@ async def test_create_variable__variable_value_cannot_be_empty(client: AsyncClie
 
 
 @pytest.mark.usefixtures("active_user")
-async def test_create_variable__HTTPException(client: AsyncClient, body, logged_in_headers):
+async def test_create_variable__httpexception(client: AsyncClient, body, logged_in_headers):
     status_code = 418
     generic_message = "I'm a teapot"
 
@@ -89,7 +89,7 @@ async def test_create_variable__HTTPException(client: AsyncClient, body, logged_
 
 
 @pytest.mark.usefixtures("active_user")
-async def test_create_variable__Exception(client: AsyncClient, body, logged_in_headers):
+async def test_create_variable__exception(client: AsyncClient, body, logged_in_headers):
     generic_message = "Generic error message"
 
     with mock.patch("langflow.services.auth.utils.encrypt_api_key") as m:
@@ -133,16 +133,10 @@ async def test_read_variables__empty(client: AsyncClient, logged_in_headers):
 async def test_read_variables__(client: AsyncClient, logged_in_headers):
     generic_message = "Generic error message"
 
-    with pytest.raises(Exception) as exc, mock.patch("sqlmodel.Session.exec") as m:
+    with mock.patch("sqlmodel.Session.exec") as m:
         m.side_effect = Exception(generic_message)
-
-        response = await client.get("api/v1/variables/", headers=logged_in_headers)
-        result = response.json()
-
-        assert response.status_code == status.HTTP_500_INTERNAL_SERVER_ERROR
-        assert generic_message in result["detail"]
-
-    assert generic_message in str(exc.value)
+        with pytest.raises(Exception, match=generic_message):
+            await client.get("api/v1/variables/", headers=logged_in_headers)
 
 
 @pytest.mark.usefixtures("active_user")
@@ -165,7 +159,7 @@ async def test_update_variable(client: AsyncClient, body, logged_in_headers):
 
 
 @pytest.mark.usefixtures("active_user")
-async def test_update_variable__Exception(client: AsyncClient, body, logged_in_headers):
+async def test_update_variable__exception(client: AsyncClient, body, logged_in_headers):
     wrong_id = uuid4()
     body["id"] = str(wrong_id)
 
@@ -186,7 +180,7 @@ async def test_delete_variable(client: AsyncClient, body, logged_in_headers):
 
 
 @pytest.mark.usefixtures("active_user")
-async def test_delete_variable__Exception(client: AsyncClient, logged_in_headers):
+async def test_delete_variable__exception(client: AsyncClient, logged_in_headers):
     wrong_id = uuid4()
 
     response = await client.delete(f"api/v1/variables/{wrong_id}", headers=logged_in_headers)

src/backend/tests/unit/base/load/test_load.py

@@ -26,4 +26,5 @@ def test_run_flow_from_json_params():
     params = func_spec.args + func_spec.kwonlyargs
     assert expected_params.issubset(params), "Not all expected parameters are present in run_flow_from_json"
 
-    # TODO: Add tests by loading a flow and running it need to text with fake llm and check if it returns the correct output
+    # TODO: Add tests by loading a flow and running it need to text with fake llm and check if it returns the
+    #  correct output

src/backend/tests/unit/base/tools/test_component_toolkit.py

@@ -12,7 +12,7 @@ from langflow.services.settings.feature_flags import FEATURE_FLAGS
 
 
 @pytest.fixture
-def add_toolkit_output():
+def _add_toolkit_output():
     FEATURE_FLAGS.add_toolkit_output = True
     yield
     FEATURE_FLAGS.add_toolkit_output = False
@@ -81,7 +81,7 @@ def test_component_tool():
 
 
 @pytest.mark.api_key_required
-@pytest.mark.usefixtures("add_toolkit_output", "client")
+@pytest.mark.usefixtures("_add_toolkit_output", "client")
 def test_component_tool_with_api_key():
     chat_output = ChatOutput()
     openai_llm = OpenAIModelComponent()

src/backend/tests/unit/components/helpers/test_structured_output_component.py

@@ -1,34 +1,60 @@
 from unittest.mock import MagicMock, patch
 
 import pytest
+from langchain_core.language_models import BaseLanguageModel
 from langflow.components.helpers.structured_output import StructuredOutputComponent
 from langflow.schema.data import Data
 from pydantic import BaseModel
-
-
-@pytest.fixture
-def client():
-    pass
+from typing_extensions import override
 
 
 class TestStructuredOutputComponent:
-    # Ensure that the structured output is successfully generated with the correct BaseModel instance returned by the mock function
+    # Ensure that the structured output is successfully generated with the correct BaseModel instance returned by
+    # the mock function
     def test_successful_structured_output_generation_with_patch_with_config(self):
         from unittest.mock import patch
 
-        class MockLanguageModel:
-            def with_structured_output(self, schema):
+        class MockLanguageModel(BaseLanguageModel):
+            @override
+            def with_structured_output(self, *args, **kwargs):
                 return self
 
-            def with_config(self, config):
+            @override
+            def with_config(self, *args, **kwargs):
                 return self
 
-            def invoke(self, inputs):
+            @override
+            def invoke(self, *args, **kwargs):
                 return self
 
-        def mock_get_chat_result(runnable, input_value, config):
+            @override
+            def generate_prompt(self, *args, **kwargs):
+                raise NotImplementedError
+
+            @override
+            async def agenerate_prompt(self, *args, **kwargs):
+                raise NotImplementedError
+
+            @override
+            def predict(self, *args, **kwargs):
+                raise NotImplementedError
+
+            @override
+            def predict_messages(self, *args, **kwargs):
+                raise NotImplementedError
+
+            @override
+            async def apredict(self, *args, **kwargs):
+                raise NotImplementedError
+
+            @override
+            async def apredict_messages(self, *args, **kwargs):
+                raise NotImplementedError
+
+        def mock_get_chat_result(runnable, input_value, config):  # noqa: ARG001
             class MockBaseModel(BaseModel):
-                def model_dump(self):
+                @override
+                def model_dump(self, **kwargs):
                     return {"field": "value"}
 
             return MockBaseModel()

src/backend/tests/unit/components/models/test_ChatOllama_component.py

@@ -112,7 +112,7 @@ def test_update_build_config_keep_alive(component):
     "langchain_community.chat_models.ChatOllama",
     return_value=ChatOllama(base_url="http://localhost:11434", model="llama3.1"),
 )
-def test_build_model(_mock_chat_ollama, component):
+def test_build_model(_mock_chat_ollama, component):  # noqa: PT019
     component.base_url = "http://localhost:11434"
     component.model_name = "llama3.1"
     component.mirostat = "Mirostat 2.0"

src/backend/tests/unit/components/prompts/test_prompt_component.py

@@ -1,4 +1,4 @@
-from langflow.components.prompts.Prompt import PromptComponent  # type: ignore
+from langflow.components.prompts.Prompt import PromptComponent
 
 
 class TestPromptComponent:

src/backend/tests/unit/components/prototypes/test_create_data_component.py

@@ -109,9 +109,5 @@ def test_validate_text_key_invalid(create_data_component):
     create_data_component.text_key = "invalid_key"
 
     # Act & Assert
-    with pytest.raises(ValueError) as exc_info:
+    with pytest.raises(ValueError, match="Text Key: 'invalid_key' not found in the Data keys: 'key1, key2'"):
         create_data_component.validate_text_key()
-
-    # Check for the exact error message
-    expected_error_message = f"Text Key: '{create_data_component.text_key}' not found in the Data keys: '{', '.join(create_data_component.get_data().keys())}'"
-    assert str(exc_info.value) == expected_error_message

src/backend/tests/unit/components/prototypes/test_update_data_component.py

@@ -96,10 +96,5 @@ def test_validate_text_key_invalid(update_data_component):
     data = Data(data={"key1": "value1", "key2": "value2"}, text_key="key1")
     update_data_component.text_key = "invalid_key"
 
-    with pytest.raises(ValueError) as exc_info:
+    with pytest.raises(ValueError, match="Text Key: invalid_key not found in the Data keys: key1,key2"):
         update_data_component.validate_text_key(data)
-
-    expected_error_message = (
-        f"Text Key: {update_data_component.text_key} not found in the Data keys: {','.join(data.data.keys())}"
-    )
-    assert str(exc_info.value) == expected_error_message

src/backend/tests/unit/custom/custom_component/test_component.py

@@ -11,7 +11,7 @@ from langflow.template.field.base import Output
 def test_set_invalid_output():
     chatinput = ChatInput()
     chatoutput = ChatOutput()
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="Method build_config is not a valid output of ChatInput"):
         chatoutput.set(input_value=chatinput.build_config)
 
 

src/backend/tests/unit/events/test_event_manager.py

@@ -90,9 +90,9 @@ class TestEventManager:
 
         queue = asyncio.Queue()
         manager = EventManager(queue)
-        with pytest.raises(ValueError):
+        with pytest.raises(ValueError, match="Event name cannot be empty"):
             manager.register_event("", "test_type", mock_callback)
-        with pytest.raises(ValueError):
+        with pytest.raises(ValueError, match="Event name must start with 'on_'"):
             manager.register_event("invalid_name", "test_type", mock_callback)
 
     # Sending an event with complex data and verifying successful event transmission

src/backend/tests/unit/exceptions/test_api.py

@@ -16,28 +16,32 @@ def test_api_exception():
     }
     # Expected result
 
-    with patch(
-        "langflow.services.database.models.flow.utils.get_outdated_components", return_value=mock_outdated_components
+    with (
+        patch(
+            "langflow.services.database.models.flow.utils.get_outdated_components",
+            return_value=mock_outdated_components,
+        ),
+        patch("langflow.api.utils.get_suggestion_message", return_value=mock_suggestion_message),
+        patch(
+            "langflow.services.database.models.flow.utils.get_components_versions",
+            return_value=mock_component_versions,
+        ),
     ):
-        with patch("langflow.api.utils.get_suggestion_message", return_value=mock_suggestion_message):
-            with patch(
-                "langflow.services.database.models.flow.utils.get_components_versions",
-                return_value=mock_component_versions,
-            ):
-                # Create an APIException instance
-                api_exception = APIException(mock_exception, mock_flow)
+        # Create an APIException instance
+        api_exception = APIException(mock_exception, mock_flow)
 
-                # Expected body
-                expected_body = ExceptionBody(
-                    message="Test exception",
-                    suggestion="The flow contains 2 outdated components. We recommend updating the following components: component1, component2.",
-                )
+        # Expected body
+        expected_body = ExceptionBody(
+            message="Test exception",
+            suggestion="The flow contains 2 outdated components. "
+            "We recommend updating the following components: component1, component2.",
+        )
 
-                # Assert the status code
-                assert api_exception.status_code == 500
+        # Assert the status code
+        assert api_exception.status_code == 500
 
-                # Assert the detail
-                assert api_exception.detail == expected_body.model_dump_json()
+        # Assert the detail
+        assert api_exception.detail == expected_body.model_dump_json()
 
 
 def test_api_exception_no_flow():

src/backend/tests/unit/graph/graph/state/test_state_model.py

@@ -22,27 +22,27 @@ class TestCreateStateModel:
     # Successfully create a model with valid method return type annotations
 
     def test_create_model_with_valid_return_type_annotations(self, chat_input_component):
-        StateModel = create_state_model(method_one=chat_input_component.message_response)
+        state_model = create_state_model(method_one=chat_input_component.message_response)
 
-        state_instance = StateModel()
+        state_instance = state_model()
         assert state_instance.method_one is UNDEFINED
         chat_input_component.set_output_value("message", "test")
         assert state_instance.method_one == "test"
 
     def test_create_model_and_assign_values_fails(self, chat_input_component):
-        StateModel = create_state_model(method_one=chat_input_component.message_response)
+        state_model = create_state_model(method_one=chat_input_component.message_response)
 
-        state_instance = StateModel()
+        state_instance = state_model()
         state_instance.method_one = "test"
         assert state_instance.method_one == "test"
 
     def test_create_with_multiple_components(self, chat_input_component, chat_output_component):
-        NewStateModel = create_state_model(
+        new_state_model = create_state_model(
             model_name="NewStateModel",
             first_method=chat_input_component.message_response,
             second_method=chat_output_component.message_response,
         )
-        state_instance = NewStateModel()
+        state_instance = new_state_model()
         assert state_instance.first_method is UNDEFINED
         assert state_instance.second_method is UNDEFINED
         state_instance.first_method = "test"
@@ -51,9 +51,9 @@ class TestCreateStateModel:
         assert state_instance.second_method == 123
 
     def test_create_with_pydantic_field(self, chat_input_component):
-        StateModel = create_state_model(method_one=chat_input_component.message_response, my_attribute=Field(None))
+        state_model = create_state_model(method_one=chat_input_component.message_response, my_attribute=Field(None))
 
-        state_instance = StateModel()
+        state_instance = state_model()
         state_instance.method_one = "test"
         state_instance.my_attribute = "test"
         assert state_instance.method_one == "test"
@@ -64,8 +64,8 @@ class TestCreateStateModel:
 
     # Creates a model with fields based on provided keyword arguments
     def test_create_model_with_fields_from_kwargs(self):
-        StateModel = create_state_model(field_one=(str, "default"), field_two=(int, 123))
-        state_instance = StateModel()
+        state_model = create_state_model(field_one=(str, "default"), field_two=(int, 123))
+        state_instance = state_model()
         assert state_instance.field_one == "default"
         assert state_instance.field_two == 123
 
@@ -81,16 +81,16 @@ class TestCreateStateModel:
 
     # Handles empty keyword arguments gracefully
     def test_handle_empty_kwargs_gracefully(self):
-        StateModel = create_state_model()
-        state_instance = StateModel()
+        state_model = create_state_model()
+        state_instance = state_model()
         assert state_instance is not None
 
     # Ensures model name defaults to "State" if not provided
     def test_default_model_name_to_state(self):
-        StateModel = create_state_model()
-        assert StateModel.__name__ == "State"
-        OtherNameModel = create_state_model(model_name="OtherName")
-        assert OtherNameModel.__name__ == "OtherName"
+        state_model = create_state_model()
+        assert state_model.__name__ == "State"
+        other_name_model = create_state_model(model_name="OtherName")
+        assert other_name_model.__name__ == "OtherName"
 
     # Validates that callable values are properly type-annotated
 
@@ -110,8 +110,7 @@ class TestCreateStateModel:
         chat_input = ChatInput(_id="chat_input")
         chat_output = ChatOutput(input_value="test", _id="chat_output")
         chat_output.set(sender_name=chat_input.message_response)
-        ChatStateModel = create_state_model(model_name="ChatState", message=chat_output.message_response)
-        chat_state_model = ChatStateModel()
+        chat_state_model = create_state_model(model_name="ChatState", message=chat_output.message_response)()
         assert chat_state_model.__class__.__name__ == "ChatState"
         assert chat_state_model.message is UNDEFINED
 
@@ -121,9 +120,7 @@ class TestCreateStateModel:
         # and check that the graph is running
         # correctly
         ids = ["chat_input", "chat_output"]
-        results = []
-        for result in graph.start():
-            results.append(result)
+        results = list(graph.start())
 
         assert len(results) == 3
         assert all(result.vertex.id in ids for result in results if hasattr(result, "vertex"))

src/backend/tests/unit/graph/graph/test_base.py

@@ -9,7 +9,6 @@ from langflow.components.outputs.TextOutput import TextOutputComponent
 from langflow.components.tools.YfinanceTool import YfinanceToolComponent
 from langflow.graph.graph.base import Graph
 from langflow.graph.graph.constants import Finish
-from pytest import LogCaptureFixture
 
 
 @pytest.mark.asyncio
@@ -19,12 +18,12 @@ async def test_graph_not_prepared():
     graph = Graph()
     graph.add_component(chat_input)
     graph.add_component(chat_output)
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="Graph not prepared"):
         await graph.astep()
 
 
 @pytest.mark.asyncio
-async def test_graph(caplog: LogCaptureFixture):
+async def test_graph(caplog: pytest.LogCaptureFixture):
     chat_input = ChatInput()
     chat_output = ChatOutput()
     graph = Graph()
@@ -83,9 +82,7 @@ async def test_graph_functional_async_start():
     # and check that the graph is running
     # correctly
     ids = ["chat_input", "chat_output"]
-    results = []
-    async for result in graph.async_start():
-        results.append(result)
+    results = [result async for result in graph.async_start()]
 
     assert len(results) == 3
     assert all(result.vertex.id in ids for result in results if hasattr(result, "vertex"))
@@ -102,9 +99,7 @@ def test_graph_functional_start():
     # and check that the graph is running
     # correctly
     ids = ["chat_input", "chat_output"]
-    results = []
-    for result in graph.start():
-        results.append(result)
+    results = list(graph.start())
 
     assert len(results) == 3
     assert all(result.vertex.id in ids for result in results if hasattr(result, "vertex"))
@@ -123,9 +118,7 @@ def test_graph_functional_start_end():
     # and check that the graph is running
     # correctly
     ids = ["chat_input", "text_output"]
-    results = []
-    for result in graph.start():
-        results.append(result)
+    results = list(graph.start())
 
     assert len(results) == len(ids) + 1
     assert all(result.vertex.id in ids for result in results if hasattr(result, "vertex"))

src/backend/tests/unit/graph/graph/test_cycles.py

@@ -103,11 +103,9 @@ def test_cycle_in_graph_max_iterations():
     # Run queue should contain chat_input and not router
     assert "chat_input" in graph._run_queue
     assert "router" not in graph._run_queue
-    results = []
 
     with pytest.raises(ValueError, match="Max iterations reached"):
-        for result in graph.start(max_iterations=2, config={"output": {"cache": False}}):
-            results.append(result)
+        list(graph.start(max_iterations=2, config={"output": {"cache": False}}))
 
 
 def test_that_outputs_cache_is_set_to_false_in_cycle():
@@ -149,7 +147,10 @@ def test_updated_graph_with_prompts():
 
     # First prompt: Guessing game with hints
     prompt_component_1 = PromptComponent(_id="prompt_component_1").set(
-        template="Try to guess a word. I will give you hints if you get it wrong.\nHint: {hint}\nLast try: {last_try}\nAnswer:",
+        template="Try to guess a word. I will give you hints if you get it wrong.\n"
+        "Hint: {hint}\n"
+        "Last try: {last_try}\n"
+        "Answer:",
     )
 
     # First OpenAI LLM component (Processes the guessing prompt)
@@ -168,7 +169,10 @@ def test_updated_graph_with_prompts():
     # Second prompt: After the last try, provide a new hint
     prompt_component_2 = PromptComponent(_id="prompt_component_2")
     prompt_component_2.set(
-        template="Given the following word and the following last try. Give the guesser a new hint.\nLast try: {last_try}\nWord: {word}\nHint:",
+        template="Given the following word and the following last try. Give the guesser a new hint.\n"
+        "Last try: {last_try}\n"
+        "Word: {word}\n"
+        "Hint:",
         word=chat_input.message_response,
         last_try=router.false_response,
     )

src/backend/tests/unit/graph/graph/test_graph_state_model.py

@@ -38,9 +38,9 @@ AI: """
 
     graph = Graph(chat_input, chat_output)
 
-    GraphStateModel = create_state_model_from_graph(graph)
-    assert GraphStateModel.__name__ == "GraphStateModel"
-    assert list(GraphStateModel.model_computed_fields.keys()) == [
+    graph_state_model = create_state_model_from_graph(graph)
+    assert graph_state_model.__name__ == "GraphStateModel"
+    assert list(graph_state_model.model_computed_fields.keys()) == [
         "chat_input",
         "chat_output",
         "openai",
@@ -60,12 +60,9 @@ def test_graph_functional_start_graph_state_update():
     # Now iterate through the graph
     # and check that the graph is running
     # correctly
-    GraphStateModel = create_state_model_from_graph(graph)
-    graph_state_model = GraphStateModel()
+    graph_state_model = create_state_model_from_graph(graph)()
     ids = ["chat_input", "chat_output"]
-    results = []
-    for result in graph.start():
-        results.append(result)
+    results = list(graph.start())
 
     assert len(results) == 3
     assert all(result.vertex.id in ids for result in results if hasattr(result, "vertex"))
@@ -87,12 +84,9 @@ def test_graph_state_model_serialization():
     # Now iterate through the graph
     # and check that the graph is running
     # correctly
-    GraphStateModel = create_state_model_from_graph(graph)
-    graph_state_model = GraphStateModel()
+    graph_state_model = create_state_model_from_graph(graph)()
     ids = ["chat_input", "chat_output"]
-    results = []
-    for result in graph.start():
-        results.append(result)
+    results = list(graph.start())
 
     assert len(results) == 3
     assert all(result.vertex.id in ids for result in results if hasattr(result, "vertex"))
@@ -116,8 +110,7 @@ def test_graph_state_model_json_schema():
     graph = Graph(chat_input, chat_output)
     graph.prepare()
 
-    GraphStateModel = create_state_model_from_graph(graph)
-    graph_state_model: BaseModel = GraphStateModel()
+    graph_state_model: BaseModel = create_state_model_from_graph(graph)()
     json_schema = graph_state_model.model_json_schema(mode="serialization")
 
     # Test main schema structure

src/backend/tests/unit/graph/graph/test_runnable_vertices_manager.py

@@ -66,7 +66,7 @@ def test_pickle(data):
     manager = RunnableVerticesManager.from_dict(data)
 
     binary = pickle.dumps(manager)
-    result = pickle.loads(binary)
+    result = pickle.loads(binary)  # noqa: S301
 
     assert result.run_map == manager.run_map
     assert result.run_predecessors == manager.run_predecessors

src/backend/tests/unit/graph/graph/test_utils.py

@@ -119,7 +119,7 @@ def test_sort_up_to_vertex_a(graph):
 def test_sort_up_to_vertex_invalid_vertex(graph):
     vertex_id = "7"
 
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="Parent node map is required to find the root of a group node"):
         utils.sort_up_to_vertex(graph, vertex_id)
 
 
@@ -432,7 +432,7 @@ class TestFindCycleVertices:
         assert sorted(result) == sorted(expected_output)
 
     @pytest.mark.parametrize("_", range(5))
-    def test_handle_two_inputs_in_cycle(self, _):
+    def test_handle_two_inputs_in_cycle(self, _):  # noqa: PT019
         edges = [
             ("chat_input", "router"),
             ("chat_input", "concatenate"),

src/backend/tests/unit/graph/test_graph.py

@@ -79,8 +79,8 @@ def test_invalid_node_types():
         ],
         "edges": [],
     }
-    with pytest.raises(Exception):
-        g = Graph()
+    g = Graph()
+    with pytest.raises(KeyError):
         g.add_nodes_and_edges(graph_data["nodes"], graph_data["edges"])
 
 

src/backend/tests/unit/helpers/test_base_model_from_schema.py

@@ -79,13 +79,13 @@ class TestBuildModelFromSchema:
             {"name": "field1", "type": "str", "default": "default_value1"},
             {"name": "field2", "type": "unknown_type", "default": "default_value2"},
         ]
-        with pytest.raises(ValueError):
+        with pytest.raises(ValueError, match="Invalid type: unknown_type"):
             build_model_from_schema(schema)
 
     # Confirms that the function raises a specific exception for invalid input
     def test_raises_error_for_invalid_input_different_exception_with_specific_exception(self):
-        with pytest.raises(ValueError):
-            schema = [{"name": "field1", "type": "invalid_type", "default": "default_value"}]
+        schema = [{"name": "field1", "type": "invalid_type", "default": "default_value"}]
+        with pytest.raises(ValueError, match="Invalid type: invalid_type"):
             build_model_from_schema(schema)
 
     # Processes schemas with missing optional keys like description or multiple

src/backend/tests/unit/initial_setup/starter_projects/test_memory_chatbot.py

@@ -43,6 +43,7 @@ AI: """
     return graph
 
 
+@pytest.mark.usefixtures("client")
 def test_memory_chatbot(memory_chatbot_graph):
     # Now we run step by step
     expected_order = deque(["chat_input", "chat_memory", "prompt", "openai", "chat_output"])

src/backend/tests/unit/initial_setup/starter_projects/test_vector_store_rag.py

@@ -34,7 +34,7 @@ def ingestion_graph():
         embedding=openai_embeddings.build_embeddings,
         ingest_data=text_splitter.split_text,
         api_endpoint="https://astra.example.com",
-        token="token",
+        token="token",  # noqa: S106
     )
     vector_store.set_on_output(name="vector_store", value="mock_vector_store", cache=True)
     vector_store.set_on_output(name="base_retriever", value="mock_retriever", cache=True)
@@ -53,7 +53,7 @@ def rag_graph():
     rag_vector_store.set(
         search_input=chat_input.message_response,
         api_endpoint="https://astra.example.com",
-        token="token",
+        token="token",  # noqa: S106
         embedding=openai_embeddings.build_embeddings,
     )
     # Mock search_documents
@@ -110,9 +110,7 @@ def test_vector_store_rag(ingestion_graph, rag_graph):
         "openai-embeddings-124",
     ]
     for ids, graph, len_results in [(ingestion_ids, ingestion_graph, 5), (rag_ids, rag_graph, 8)]:
-        results = []
-        for result in graph.start():
-            results.append(result)
+        results = list(graph.start())
 
         assert len(results) == len_results
         vids = [result.vertex.id for result in results if hasattr(result, "vertex")]
@@ -217,12 +215,14 @@ def test_vector_store_rag_add(ingestion_graph: Graph, rag_graph: Graph):
     rag_graph_copy = copy.deepcopy(rag_graph)
     ingestion_graph_copy += rag_graph_copy
 
-    assert (
-        len(ingestion_graph_copy.vertices) == len(ingestion_graph.vertices) + len(rag_graph.vertices)
-    ), f"Vertices mismatch: {len(ingestion_graph_copy.vertices)} != {len(ingestion_graph.vertices)} + {len(rag_graph.vertices)}"
-    assert len(ingestion_graph_copy.edges) == len(ingestion_graph.edges) + len(
-        rag_graph.edges
-    ), f"Edges mismatch: {len(ingestion_graph_copy.edges)} != {len(ingestion_graph.edges)} + {len(rag_graph.edges)}"
+    assert len(ingestion_graph_copy.vertices) == len(ingestion_graph.vertices) + len(rag_graph.vertices), (
+        f"Vertices mismatch: {len(ingestion_graph_copy.vertices)} "
+        f"!= {len(ingestion_graph.vertices)} + {len(rag_graph.vertices)}"
+    )
+    assert len(ingestion_graph_copy.edges) == len(ingestion_graph.edges) + len(rag_graph.edges), (
+        f"Edges mismatch: {len(ingestion_graph_copy.edges)} "
+        f"!= {len(ingestion_graph.edges)} + {len(rag_graph.edges)}"
+    )
 
     combined_graph_dump = ingestion_graph_copy.dump(
         name="Combined Graph", description="Graph for data ingestion and RAG", endpoint_name="combined"

src/backend/tests/unit/inputs/test_inputs.py

@@ -70,7 +70,7 @@ def test_instantiate_input_valid():
 
 
 def test_instantiate_input_invalid():
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="Invalid input type: InvalidInput"):
         instantiate_input("InvalidInput", {"name": "invalid_input", "value": "This is a string"})
 
 
@@ -224,5 +224,5 @@ def test_instantiate_input_comprehensive():
         input_instance = instantiate_input(input_type, data)
         assert isinstance(input_instance, InputTypesMap[input_type])
 
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="Invalid input type: InvalidInput"):
         instantiate_input("InvalidInput", {"name": "invalid_input", "value": "Invalid"})

src/backend/tests/unit/io/test_io_schema.py

@@ -180,7 +180,7 @@ class TestCreateInputSchema:
         input_instance = StrInput(name="test_field", is_list=True)
         schema = create_input_schema([input_instance])
         field_info = schema.model_fields["test_field"]
-        assert field_info.annotation == list[str]  # type: ignore
+        assert field_info.annotation == list[str]
 
     # Converting FieldTypes to corresponding Python types
     def test_field_types_conversion(self):

src/backend/tests/unit/io/test_table_schema.py

@@ -33,7 +33,7 @@ class TestColumn:
 
     # Invalid formatter raises ValueError
     def test_invalid_formatter_raises_value_error(self):
-        with pytest.raises(ValueError):
+        with pytest.raises(ValueError, match="'invalid' is not a valid FormatterType"):
             Column(display_name="Invalid Column", name="invalid_column", formatter="invalid")
 
     # Formatter is None when not provided

src/backend/tests/unit/services/variable/test_service.py

@@ -72,19 +72,16 @@ def test_get_variable(service, session):
     assert result == value
 
 
-def test_get_variable__ValueError(service, session):
+def test_get_variable__valueerror(service, session):
     user_id = uuid4()
     name = "name"
     field = ""
 
-    with pytest.raises(ValueError) as exc:
+    with pytest.raises(ValueError, match=f"{name} variable not found."):
         service.get_variable(user_id, name, field, session)
 
-    assert name in str(exc.value)
-    assert "variable not found" in str(exc.value)
 
-
-def test_get_variable__TypeError(service, session):
+def test_get_variable__typeerror(service, session):
     user_id = uuid4()
     name = "name"
     value = "value"
@@ -142,17 +139,14 @@ def test_update_variable(service, session):
     assert isinstance(result.updated_at, datetime)
 
 
-def test_update_variable__ValueError(service, session):
+def test_update_variable__valueerror(service, session):
     user_id = uuid4()
     name = "name"
     value = "value"
 
-    with pytest.raises(ValueError) as exc:
+    with pytest.raises(ValueError, match=f"{name} variable not found."):
         service.update_variable(user_id, name, value, session=session)
 
-    assert name in str(exc.value)
-    assert "variable not found" in str(exc.value)
-
 
 def test_update_variable_fields(service, session):
     user_id = uuid4()
@@ -192,26 +186,21 @@ def test_delete_variable(service, session):
     service.create_variable(user_id, name, value, session=session)
     recovered = service.get_variable(user_id, name, field, session=session)
     service.delete_variable(user_id, name, session=session)
-    with pytest.raises(ValueError) as exc:
+    with pytest.raises(ValueError, match=f"{name} variable not found."):
         service.get_variable(user_id, name, field, session)
 
     assert recovered == value
-    assert name in str(exc.value)
-    assert "variable not found" in str(exc.value)
 
 
-def test_delete_variable__ValueError(service, session):
+def test_delete_variable__valueerror(service, session):
     user_id = uuid4()
     name = "name"
 
-    with pytest.raises(ValueError) as exc:
+    with pytest.raises(ValueError, match=f"{name} variable not found."):
         service.delete_variable(user_id, name, session=session)
 
-    assert name in str(exc.value)
-    assert "variable not found" in str(exc.value)
 
-
-def test_delete_varaible_by_id(service, session):
+def test_delete_variable_by_id(service, session):
     user_id = uuid4()
     name = "name"
     value = "value"
@@ -220,24 +209,19 @@ def test_delete_varaible_by_id(service, session):
     saved = service.create_variable(user_id, name, value, session=session)
     recovered = service.get_variable(user_id, name, field, session=session)
     service.delete_variable_by_id(user_id, saved.id, session=session)
-    with pytest.raises(ValueError) as exc:
+    with pytest.raises(ValueError, match=f"{name} variable not found."):
         service.get_variable(user_id, name, field, session)
 
     assert recovered == value
-    assert name in str(exc.value)
-    assert "variable not found" in str(exc.value)
 
 
-def test_delete_variable_by_id__ValueError(service, session):
+def test_delete_variable_by_id__valueerror(service, session):
     user_id = uuid4()
     variable_id = uuid4()
 
-    with pytest.raises(ValueError) as exc:
+    with pytest.raises(ValueError, match=f"{variable_id} variable not found."):
         service.delete_variable_by_id(user_id, variable_id, session=session)
 
-    assert str(variable_id) in str(exc.value)
-    assert "variable not found" in str(exc.value)
-
 
 def test_create_variable(service, session):
     user_id = uuid4()

src/backend/tests/unit/test_api_key.py

@@ -4,7 +4,11 @@ from langflow.services.database.models.api_key import ApiKeyCreate
 
 
 @pytest.fixture
-async def api_key(client, logged_in_headers, active_user):
+async def api_key(
+    client,
+    logged_in_headers,
+    active_user,  # noqa: ARG001
+):
     api_key = ApiKeyCreate(name="test-api-key")
 
     response = await client.post("api/v1/api_key/", data=api_key.model_dump_json(), headers=logged_in_headers)

src/backend/tests/unit/test_custom_component.py

@@ -51,9 +51,7 @@ def test_code_parser_get_tree():
 
 
 def test_code_parser_syntax_error():
-    """Test the __get_tree method raises the
-    CodeSyntaxError when given incorrect syntax.
-    """
+    """Test the __get_tree method raises the CodeSyntaxError when given incorrect syntax."""
     code_syntax_error = "zzz import os"
 
     parser = CodeParser(code_syntax_error)
@@ -76,9 +74,7 @@ def test_component_get_code_tree():
 
 
 def test_component_code_null_error():
-    """Test the get_function method raises the
-    ComponentCodeNullError when the code is empty.
-    """
+    """Test the get_function method raises the ComponentCodeNullError when the code is empty."""
     component = BaseComponent(_code="", _function_entrypoint_name="")
     with pytest.raises(ComponentCodeNullError):
         component.get_function()
@@ -108,9 +104,7 @@ def test_custom_component_get_function():
 
 
 def test_code_parser_parse_imports_import():
-    """Test the parse_imports method of the CodeParser
-    class with an import statement.
-    """
+    """Test the parse_imports method of the CodeParser class with an import statement."""
     parser = CodeParser(code_default)
     tree = parser.get_tree()
     for node in ast.walk(tree):
@@ -120,9 +114,7 @@ def test_code_parser_parse_imports_import():
 
 
 def test_code_parser_parse_imports_importfrom():
-    """Test the parse_imports method of the CodeParser
-    class with an import from statement.
-    """
+    """Test the parse_imports method of the CodeParser class with an import from statement."""
     parser = CodeParser("from os import path")
     tree = parser.get_tree()
     for node in ast.walk(tree):
@@ -157,9 +149,9 @@ def test_code_parser_parse_classes_raises():
     """Test the parse_classes method of the CodeParser class."""
     parser = CodeParser("class Test: pass")
     tree = parser.get_tree()
-    with pytest.raises(TypeError):
-        for node in ast.walk(tree):
-            if isinstance(node, ast.ClassDef):
+    for node in ast.walk(tree):
+        if isinstance(node, ast.ClassDef):
+            with pytest.raises(TypeError):
                 parser.parse_classes(node)
 
 
@@ -175,18 +167,14 @@ def test_code_parser_parse_global_vars():
 
 
 def test_component_get_function_valid():
-    """Test the get_function method of the Component
-    class with valid code and function_entrypoint_name.
-    """
+    """Test the get_function method of the Component class with valid code and function_entrypoint_name."""
     component = BaseComponent(_code="def build(): pass", _function_entrypoint_name="build")
     my_function = component.get_function()
     assert callable(my_function)
 
 
 def test_custom_component_get_function_entrypoint_args():
-    """Test the get_function_entrypoint_args
-    property of the CustomComponent class.
-    """
+    """Test the get_function_entrypoint_args property of the CustomComponent class."""
     custom_component = CustomComponent(_code=code_default, _function_entrypoint_name="build")
     args = custom_component.get_function_entrypoint_args
     assert len(args) == 3
@@ -196,9 +184,7 @@ def test_custom_component_get_function_entrypoint_args():
 
 
 def test_custom_component_get_function_entrypoint_return_type():
-    """Test the get_function_entrypoint_return_type
-    property of the CustomComponent class.
-    """
+    """Test the get_function_entrypoint_return_type property of the CustomComponent class."""
     custom_component = CustomComponent(_code=code_default, _function_entrypoint_name="build")
     return_type = custom_component.get_function_entrypoint_return_type
     assert return_type == [Document]
@@ -212,9 +198,7 @@ def test_custom_component_get_main_class_name():
 
 
 def test_custom_component_get_function_valid():
-    """Test the get_function property of the CustomComponent
-    class with valid code and function_entrypoint_name.
-    """
+    """Test the get_function property of the CustomComponent class with valid code and function_entrypoint_name."""
     custom_component = CustomComponent(_code="def build(): pass", _function_entrypoint_name="build")
     my_function = custom_component.get_function
     assert callable(my_function)
@@ -239,9 +223,7 @@ def test_code_parser_parse_arg_with_annotation():
 
 
 def test_code_parser_parse_callable_details_no_args():
-    """Test the parse_callable_details method of the
-    CodeParser class with a function with no arguments.
-    """
+    """Test the parse_callable_details method of the CodeParser class with a function with no arguments."""
     parser = CodeParser("")
     node = ast.FunctionDef(
         name="test",
@@ -280,9 +262,7 @@ def test_code_parser_parse_ann_assign():
 
 
 def test_code_parser_parse_function_def_not_init():
-    """Test the parse_function_def method of the
-    CodeParser class with a function that is not __init__.
-    """
+    """Test the parse_function_def method of the CodeParser class with a function that is not __init__."""
     parser = CodeParser("")
     stmt = ast.FunctionDef(
         name="test",
@@ -297,9 +277,7 @@ def test_code_parser_parse_function_def_not_init():
 
 
 def test_code_parser_parse_function_def_init():
-    """Test the parse_function_def method of the
-    CodeParser class with an __init__ function.
-    """
+    """Test the parse_function_def method of the CodeParser class with an __init__ function."""
     parser = CodeParser("")
     stmt = ast.FunctionDef(
         name="__init__",
@@ -314,36 +292,28 @@ def test_code_parser_parse_function_def_init():
 
 
 def test_component_get_code_tree_syntax_error():
-    """Test the get_code_tree method of the Component class
-    raises the CodeSyntaxError when given incorrect syntax.
-    """
+    """Test the get_code_tree method of the Component class raises the CodeSyntaxError when given incorrect syntax."""
     component = BaseComponent(_code="import os as", _function_entrypoint_name="build")
     with pytest.raises(CodeSyntaxError):
         component.get_code_tree(component._code)
 
 
 def test_custom_component_class_template_validation_no_code():
-    """Test the _class_template_validation method of the CustomComponent class
-    raises the HTTPException when the code is None.
-    """
+    """Test CustomComponent._class_template_validation raises the HTTPException when the code is None."""
     custom_component = CustomComponent(_code=None, _function_entrypoint_name="build")
     with pytest.raises(TypeError):
         custom_component.get_function()
 
 
 def test_custom_component_get_code_tree_syntax_error():
-    """Test the get_code_tree method of the CustomComponent class
-    raises the CodeSyntaxError when given incorrect syntax.
-    """
+    """Test CustomComponent.get_code_tree raises the CodeSyntaxError when given incorrect syntax."""
     custom_component = CustomComponent(_code="import os as", _function_entrypoint_name="build")
     with pytest.raises(CodeSyntaxError):
         custom_component.get_code_tree(custom_component._code)
 
 
 def test_custom_component_get_function_entrypoint_args_no_args():
-    """Test the get_function_entrypoint_args property of
-    the CustomComponent class with a build method with no arguments.
-    """
+    """Test CustomComponent.get_function_entrypoint_args with a build method with no arguments."""
     my_code = """
 from langflow.custom import CustomComponent
 class MyMainClass(CustomComponent):
@@ -356,9 +326,7 @@ class MyMainClass(CustomComponent):
 
 
 def test_custom_component_get_function_entrypoint_return_type_no_return_type():
-    """Test the get_function_entrypoint_return_type property of the
-    CustomComponent class with a build method with no return type.
-    """
+    """Test CustomComponent.get_function_entrypoint_return_type with a build method with no return type."""
     my_code = """
 from langflow.custom import CustomComponent
 class MyClass(CustomComponent):
@@ -371,9 +339,7 @@ class MyClass(CustomComponent):
 
 
 def test_custom_component_get_main_class_name_no_main_class():
-    """Test the get_main_class_name property of the
-    CustomComponent class when there is no main class.
-    """
+    """Test the get_main_class_name property of the CustomComponent class when there is no main class."""
     my_code = """
 def build():
     pass"""
@@ -384,9 +350,7 @@ def build():
 
 
 def test_custom_component_build_not_implemented():
-    """Test the build method of the CustomComponent
-    class raises the NotImplementedError.
-    """
+    """Test the build method of the CustomComponent class raises the NotImplementedError."""
     custom_component = CustomComponent(_code="def build(): pass", _function_entrypoint_name="build")
     with pytest.raises(NotImplementedError):
         custom_component.build()

src/backend/tests/unit/test_custom_component_with_client.py

@@ -15,7 +15,10 @@ def code_component_with_multiple_outputs():
 
 
 @pytest.fixture
-def component(client, active_user):
+def component(
+    client,  # noqa: ARG001
+    active_user,
+):
     return CustomComponent(
         user_id=active_user.id,
         field_config={

src/backend/tests/unit/test_database.py

@@ -1,5 +1,5 @@
 import json
-from collections import namedtuple
+from typing import NamedTuple
 from uuid import UUID, uuid4
 
 import orjson
@@ -13,7 +13,6 @@ from langflow.services.database.models.flow import Flow, FlowCreate, FlowUpdate
 from langflow.services.database.models.folder.model import FolderCreate
 from langflow.services.database.utils import session_getter
 from langflow.services.deps import get_db_service
-from sqlmodel import Session
 
 
 @pytest.fixture(scope="module")
@@ -179,11 +178,11 @@ async def test_delete_flows_with_transaction_and_build(client: TestClient, logge
         assert response.status_code == 201
         flow_ids.append(response.json()["id"])
 
+    class VertexTuple(NamedTuple):
+        id: str
+
     # Create a transaction for each flow
-
     for flow_id in flow_ids:
-        VertexTuple = namedtuple("VertexTuple", ["id"])
-
         await log_transaction(
             str(flow_id), source=VertexTuple(id="vid"), target=VertexTuple(id="tid"), status="success"
         )
@@ -249,10 +248,11 @@ async def test_delete_folder_with_flows_with_transaction_and_build(client: TestC
         assert response.status_code == 201
         flow_ids.append(response.json()["id"])
 
+    class VertexTuple(NamedTuple):
+        id: str
+
     # Create a transaction for each flow
     for flow_id in flow_ids:
-        VertexTuple = namedtuple("VertexTuple", ["id"])
-
         await log_transaction(
             str(flow_id), source=VertexTuple(id="vid"), target=VertexTuple(id="tid"), status="success"
         )
@@ -400,9 +400,9 @@ async def test_upload_file(client: TestClient, json_flow: str, logged_in_headers
     assert response_data[1]["data"] == data
 
 
+@pytest.mark.usefixtures("session")
 async def test_download_file(
     client: TestClient,
-    session: Session,
     json_flow,
     active_user,
     logged_in_headers,
@@ -419,14 +419,14 @@ async def test_download_file(
         ]
     )
     db_manager = get_db_service()
-    with session_getter(db_manager) as session:
+    with session_getter(db_manager) as _session:
         saved_flows = []
         for flow in flow_list.flows:
             flow.user_id = active_user.id
             db_flow = Flow.model_validate(flow, from_attributes=True)
-            session.add(db_flow)
+            _session.add(db_flow)
             saved_flows.append(db_flow)
-        session.commit()
+        _session.commit()
         # Make request to endpoint inside the session context
         flow_ids = [str(db_flow.id) for db_flow in saved_flows]  # Convert UUIDs to strings
         flow_ids_json = json.dumps(flow_ids)

src/backend/tests/unit/test_endpoints.py

@@ -1,4 +1,4 @@
-import time
+import asyncio
 from uuid import UUID, uuid4
 
 import pytest
@@ -27,7 +27,7 @@ async def poll_task_status(client, headers, href, max_attempts=20, sleep_time=1)
         )
         if task_status_response.status_code == 200 and task_status_response.json()["status"] == "SUCCESS":
             return task_status_response.json()
-        time.sleep(sleep_time)
+        await asyncio.sleep(sleep_time)
     return None  # Return None if task did not complete in time
 
 

src/backend/tests/unit/test_files.py

@@ -26,7 +26,13 @@ def mock_storage_service():
 
 
 @pytest.fixture(name="files_client")
-async def files_client_fixture(session: Session, monkeypatch, request, load_flows_dir, mock_storage_service):
+async def files_client_fixture(
+    session: Session,  # noqa: ARG001
+    monkeypatch,
+    request,
+    load_flows_dir,
+    mock_storage_service,
+):
     # Set the database url to a test database
     if "noclient" in request.keywords:
         yield
@@ -47,9 +53,11 @@ async def files_client_fixture(session: Session, monkeypatch, request, load_flow
         app = create_app()
 
         app.dependency_overrides[get_storage_service] = lambda: mock_storage_service
-        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

src/backend/tests/unit/test_initial_setup.py

@@ -59,7 +59,8 @@ async def test_create_or_update_starter_projects():
         assert folder is not None
         num_db_projects = len(folder.flows)
 
-        # Check that the number of projects in the database is the same as the number of projects returned by load_starter_projects
+        # Check that the number of projects in the database is the same as the number of projects returned by
+        # load_starter_projects
         assert num_db_projects == num_projects
 
 
@@ -76,7 +77,8 @@ async def test_create_or_update_starter_projects():
 #         # Get the number of projects in the database
 #         num_db_projects = session.exec(select(func.count(Flow.id)).where(Flow.folder == STARTER_FOLDER_NAME)).one()
 
-#         # Check that the number of projects in the database is the same as the number of projects returned by load_starter_projects
+#         # Check that the number of projects in the database is the same as the number of projects returned by
+#         # load_starter_projects
 #         assert num_db_projects == num_projects
 
 #         # Get all the starter projects
@@ -99,7 +101,7 @@ async def test_create_or_update_starter_projects():
 #         delete_messages(session_id="test")
 
 
-def find_componeny_by_name(components, name):
+def find_component_by_name(components, name):
     for children in components.values():
         if name in children:
             return children[name]
@@ -111,17 +113,17 @@ def set_value(component, input_name, value):
     component["template"][input_name]["value"] = value
 
 
-def component_to_node(id, type, component):
-    return {"id": type + id, "data": {"node": component, "type": type, "id": id}}
+def component_to_node(node_id, node_type, component):
+    return {"id": node_type + node_id, "data": {"node": component, "type": node_type, "id": node_id}}
 
 
-def add_edge(input, output, from_output, to_input):
+def add_edge(source, target, from_output, to_input):
     return {
-        "source": input,
-        "target": output,
+        "source": source,
+        "target": target,
         "data": {
-            "sourceHandle": {"dataType": "ChatInput", "id": input, "name": from_output, "output_types": ["Message"]},
-            "targetHandle": {"fieldName": to_input, "id": output, "inputTypes": ["Message"], "type": "str"},
+            "sourceHandle": {"dataType": "ChatInput", "id": source, "name": from_output, "output_types": ["Message"]},
+            "targetHandle": {"fieldName": to_input, "id": target, "inputTypes": ["Message"], "type": "str"},
         },
     }
 
@@ -131,8 +133,8 @@ async def test_refresh_starter_projects():
     data_path = str(Path(__file__).parent.parent.parent.absolute() / "base" / "langflow" / "components")
     components = build_custom_component_list_from_path(data_path)
 
-    chat_input = find_componeny_by_name(components, "ChatInput")
-    chat_output = find_componeny_by_name(components, "ChatOutput")
+    chat_input = find_component_by_name(components, "ChatInput")
+    chat_output = find_component_by_name(components, "ChatOutput")
     chat_output["template"]["code"]["value"] = "changed !"
     del chat_output["template"]["should_store_message"]
     graph_data = {

src/backend/tests/unit/test_kubernetes_secrets.py

@@ -8,13 +8,13 @@ from langflow.services.variable.kubernetes_secrets import KubernetesSecretManage
 
 
 @pytest.fixture
-def mock_kube_config(mocker):
+def _mock_kube_config(mocker):
     mocker.patch("kubernetes.config.load_kube_config")
     mocker.patch("kubernetes.config.load_incluster_config")
 
 
 @pytest.fixture
-def secret_manager(mock_kube_config):
+def secret_manager(_mock_kube_config):
     return KubernetesSecretManager(namespace="test-namespace")
 
 

src/backend/tests/unit/test_messages.py

@@ -19,15 +19,15 @@ def created_message():
 
 
 @pytest.fixture
-def created_messages(session):
-    with session_scope() as session:
+def created_messages(session):  # noqa: ARG001
+    with session_scope() as _session:
         messages = [
             MessageCreate(text="Test message 1", sender="User", sender_name="User", session_id="session_id2"),
             MessageCreate(text="Test message 2", sender="User", sender_name="User", session_id="session_id2"),
             MessageCreate(text="Test message 3", sender="User", sender_name="User", session_id="session_id2"),
         ]
         messagetables = [MessageTable.model_validate(message, from_attributes=True) for message in messages]
-        messagetables = add_messagetables(messagetables, session)
+        messagetables = add_messagetables(messagetables, _session)
         return [MessageRead.model_validate(messagetable, from_attributes=True) for messagetable in messagetables]
 
 

src/backend/tests/unit/test_messages_endpoints.py

@@ -20,15 +20,15 @@ async def created_message():
 
 
 @pytest.fixture
-def created_messages(session):
-    with session_scope() as session:
+def created_messages(session):  # noqa: ARG001
+    with session_scope() as _session:
         messages = [
             MessageCreate(text="Test message 1", sender="User", sender_name="User", session_id="session_id2"),
             MessageCreate(text="Test message 2", sender="User", sender_name="User", session_id="session_id2"),
             MessageCreate(text="Test message 3", sender="User", sender_name="User", session_id="session_id2"),
         ]
         messagetables = [MessageTable.model_validate(message, from_attributes=True) for message in messages]
-        return add_messagetables(messagetables, session)
+        return add_messagetables(messagetables, _session)
 
 
 @pytest.mark.api_key_required

src/backend/tests/unit/test_process.py

@@ -282,12 +282,16 @@ async def test_load_langchain_object_with_cached_session(basic_graph_data):
 #     session_service = get_session_service()
 #     session_id1 = "non-existent-session-id"
 #     session_id = session_service.build_key(session_id1, basic_graph_data)
-#     graph1, artifacts1 = await session_service.load_session(session_id, data_graph=basic_graph_data, flow_id="flow_id")
+#     graph1, artifacts1 = await session_service.load_session(
+#         session_id, data_graph=basic_graph_data, flow_id="flow_id"
+#     )
 #     # Clear the cache
 #     await session_service.clear_session(session_id)
 #     # Use the new session_id to get the graph again
-#     graph2, artifacts2 = await session_service.load_session(session_id, data_graph=basic_graph_data, flow_id="flow_id")
-
+#     graph2, artifacts2 = await session_service.load_session(
+#         session_id, data_graph=basic_graph_data, flow_id="flow_id"
+#     )
+#
 #     # Since the cache was cleared, objects should be different
 #     assert id(graph1) != id(graph2)
 
@@ -297,8 +301,12 @@ async def test_load_langchain_object_with_cached_session(basic_graph_data):
 #     # Provide a non-existent session_id
 #     session_service = get_session_service()
 #     session_id1 = None
-#     graph1, artifacts1 = await session_service.load_session(session_id1, data_graph=basic_graph_data, flow_id="flow_id")
+#     graph1, artifacts1 = await session_service.load_session(
+#         session_id1, data_graph=basic_graph_data, flow_id="flow_id"
+#     )
 #     # Use the new session_id to get the langchain_object again
-#     graph2, artifacts2 = await session_service.load_session(session_id1, data_graph=basic_graph_data, flow_id="flow_id")
-
+#     graph2, artifacts2 = await session_service.load_session(
+#         session_id1, data_graph=basic_graph_data, flow_id="flow_id"
+#     )
+#
 #     assert graph1 == graph2

src/backend/tests/unit/test_schema.py

@@ -45,52 +45,52 @@ class TestInput:
         assert set(post_process_type(SequenceABC[float])) == {float}
 
         # Union types
-        assert set(post_process_type(Union[int, str])) == {int, str}
-        assert set(post_process_type(Union[int, SequenceABC[str]])) == {int, str}
-        assert set(post_process_type(Union[int, SequenceABC[int]])) == {int}
+        assert set(post_process_type(Union[int, str])) == {int, str}  # noqa: UP007
+        assert set(post_process_type(Union[int, SequenceABC[str]])) == {int, str}  # noqa: UP007
+        assert set(post_process_type(Union[int, SequenceABC[int]])) == {int}  # noqa: UP007
 
         # Nested Union with lists
-        assert set(post_process_type(Union[list[int], list[str]])) == {int, str}
-        assert set(post_process_type(Union[int, list[str], list[float]])) == {int, str, float}
+        assert set(post_process_type(Union[list[int], list[str]])) == {int, str}  # noqa: UP007
+        assert set(post_process_type(Union[int, list[str], list[float]])) == {int, str, float}  # noqa: UP007
 
         # Custom data types
         assert set(post_process_type(Data)) == {Data}
         assert set(post_process_type(list[Data])) == {Data}
 
         # Union with custom types
-        assert set(post_process_type(Union[Data, str])) == {Data, str}
-        assert set(post_process_type(Union[Data, int, list[str]])) == {Data, int, str}
+        assert set(post_process_type(Union[Data, str])) == {Data, str}  # noqa: UP007
+        assert set(post_process_type(Union[Data, int, list[str]])) == {Data, int, str}  # noqa: UP007
 
         # Empty lists and edge cases
         assert set(post_process_type(list)) == {list}
-        assert set(post_process_type(Union[int, None])) == {int, NoneType}
-        assert set(post_process_type(Union[None, list[None]])) == {None, NoneType}
+        assert set(post_process_type(Union[int, None])) == {int, NoneType}  # noqa: UP007
+        assert set(post_process_type(Union[None, list[None]])) == {None, NoneType}  # noqa: UP007
 
         # Handling complex nested structures
-        assert set(post_process_type(Union[SequenceABC[int | str], list[float]])) == {int, str, float}
-        assert set(post_process_type(Union[int | list[str] | list[float], str])) == {int, str, float}
+        assert set(post_process_type(Union[SequenceABC[int | str], list[float]])) == {int, str, float}  # noqa: UP007
+        assert set(post_process_type(Union[int | list[str] | list[float], str])) == {int, str, float}  # noqa: UP007
 
         # Non-generic types should return as is
         assert set(post_process_type(dict)) == {dict}
         assert set(post_process_type(tuple)) == {tuple}
 
         # Union with custom types
-        assert set(post_process_type(Union[Data, str])) == {Data, str}
+        assert set(post_process_type(Union[Data, str])) == {Data, str}  # noqa: UP007
         assert set(post_process_type(Data | str)) == {Data, str}
         assert set(post_process_type(Data | int | list[str])) == {Data, int, str}
 
         # More complex combinations with Data
         assert set(post_process_type(Data | list[float])) == {Data, float}
-        assert set(post_process_type(Data | Union[int, str])) == {Data, int, str}
+        assert set(post_process_type(Data | Union[int, str])) == {Data, int, str}  # noqa: UP007
         assert set(post_process_type(Data | list[int] | None)) == {Data, int, type(None)}
-        assert set(post_process_type(Data | Union[float, None])) == {Data, float, type(None)}
+        assert set(post_process_type(Data | Union[float, None])) == {Data, float, type(None)}  # noqa: UP007
 
         # Multiple Data types combined
-        assert set(post_process_type(Union[Data, str | float])) == {Data, str, float}
-        assert set(post_process_type(Union[Data | float | str, int])) == {Data, int, float, str}
+        assert set(post_process_type(Union[Data, str | float])) == {Data, str, float}  # noqa: UP007
+        assert set(post_process_type(Union[Data | float | str, int])) == {Data, int, float, str}  # noqa: UP007
 
         # Testing with nested unions and lists
-        assert set(post_process_type(Union[list[Data], list[int | str]])) == {Data, int, str}
+        assert set(post_process_type(Union[list[Data], list[int | str]])) == {Data, int, str}  # noqa: UP007
         assert set(post_process_type(Data | list[float | str])) == {Data, float, str}
 
     def test_input_to_dict(self):
@@ -157,7 +157,7 @@ class TestPostProcessType:
         assert post_process_type(list[int]) == [int]
 
     def test_union_type(self):
-        assert set(post_process_type(Union[int, str])) == {int, str}
+        assert set(post_process_type(Union[int, str])) == {int, str}  # noqa: UP007
 
     def test_custom_type(self):
         class CustomType:
@@ -175,4 +175,4 @@ class TestPostProcessType:
         class CustomType:
             pass
 
-        assert set(post_process_type(Union[CustomType, int])) == {CustomType, int}
+        assert set(post_process_type(Union[CustomType, int])) == {CustomType, int}  # noqa: UP007

src/backend/tests/unit/test_setup_superuser.py

@@ -112,11 +112,11 @@ def test_teardown_superuser_default_superuser(mock_get_session, mock_get_setting
 @patch("langflow.services.deps.get_settings_service")
 @patch("langflow.services.deps.get_session")
 def test_teardown_superuser_no_default_superuser(mock_get_session, mock_get_settings_service):
-    ADMIN_USER_NAME = "admin_user"
+    admin_user_name = "admin_user"
     mock_settings_service = MagicMock()
     mock_settings_service.auth_settings.AUTO_LOGIN = False
-    mock_settings_service.auth_settings.SUPERUSER = ADMIN_USER_NAME
-    mock_settings_service.auth_settings.SUPERUSER_PASSWORD = "password"
+    mock_settings_service.auth_settings.SUPERUSER = admin_user_name
+    mock_settings_service.auth_settings.SUPERUSER_PASSWORD = "password"  # noqa: S105
     mock_get_settings_service.return_value = mock_settings_service
 
     mock_session = MagicMock()

src/backend/tests/unit/test_user.py

@@ -1,4 +1,4 @@
-from datetime import datetime
+from datetime import datetime, timezone
 
 import pytest
 from httpx import AsyncClient
@@ -11,7 +11,7 @@ from sqlmodel import select
 
 
 @pytest.fixture
-def super_user(client):
+def super_user(client):  # noqa: ARG001
     settings_manager = get_settings_service()
     auth_settings = settings_manager.auth_settings
     with session_getter(get_db_service()) as session:
@@ -23,7 +23,10 @@ def super_user(client):
 
 
 @pytest.fixture
-async def super_user_headers(client: AsyncClient, super_user):
+async def super_user_headers(
+    client: AsyncClient,
+    super_user,  # noqa: ARG001
+):
     settings_service = get_settings_service()
     auth_settings = settings_service.auth_settings
     login_data = {
@@ -38,14 +41,14 @@ async def super_user_headers(client: AsyncClient, super_user):
 
 
 @pytest.fixture
-def deactivated_user(client):
+def deactivated_user(client):  # noqa: ARG001
     with session_getter(get_db_service()) as session:
         user = User(
             username="deactivateduser",
             password=get_password_hash("testpassword"),
             is_active=False,
             is_superuser=False,
-            last_login_at=datetime.now(),
+            last_login_at=datetime.now(tz=timezone.utc),
         )
         session.add(user)
         session.commit()
@@ -55,7 +58,7 @@ def deactivated_user(client):
 
 async def test_user_waiting_for_approval(client):
     username = "waitingforapproval"
-    password = "testpassword"
+    password = "testpassword"  # noqa: S105
 
     # Debug: Check if the user already exists
     with session_getter(get_db_service()) as session:
@@ -140,7 +143,7 @@ async def test_inactive_user(client: AsyncClient):
             username="inactiveuser",
             password=get_password_hash("testpassword"),
             is_active=False,
-            last_login_at=datetime(2023, 1, 1, 0, 0, 0),
+            last_login_at=datetime(2023, 1, 1, 0, 0, 0, tzinfo=timezone.utc),
         )
         session.add(user)
         session.commit()
@@ -205,7 +208,7 @@ async def test_patch_user(client: AsyncClient, active_user, logged_in_headers):
 async def test_patch_reset_password(client: AsyncClient, active_user, logged_in_headers):
     user_id = active_user.id
     update_data = UserUpdate(
-        password="newpassword",
+        password="newpassword",  # noqa: S106
     )
 
     response = await client.patch(

src/backend/tests/unit/test_webhook.py

@@ -5,7 +5,7 @@ import pytest
 
 
 @pytest.fixture(autouse=True)
-def check_openai_api_key_in_environment_variables():
+def _check_openai_api_key_in_environment_variables():
     pass