refactor: change typing annotations in tests folder (#3594)

* refactor(log_router.py): change variable type annotation from List to list for better consistency
refactor(utils.py): change variable type annotation from Dict to dict for better consistency
refactor(base.py): change variable type annotation from Optional to Union for better clarity
refactor(callback.py): change variable type annotation from Dict to dict for better consistency
refactor(chat.py): change variable type annotation from Optional to Union for better clarity
refactor(endpoints.py): change variable type annotation from Optional to Union for better clarity
refactor(flows.py): change variable type annotation from List to list for better consistency

refactor(api): update response_model annotations to use lowercase list for consistency and improve readability

refactor(store.py): update type annotations for query parameters in get_components endpoint to improve code readability and maintainability
feat(store.py): add support for type hinting Union and list types in query parameters for better data validation and documentation

* run make format

* refactor(input_mixin.py): update typing annotations for variables to use union types for better clarity and compatibility with Python 3.10
refactor(inputs.py): update typing annotations for variables to use union types and import necessary modules for compatibility with Python 3.10

* refactor(base.py): remove unnecessary imports and update typing for fields in Input and Output classes
feat(base.py): add support for specifying field types more explicitly in Input and Output classes
feat(frontend_node/base.py): enhance typing and field definitions in FrontendNode class
feat(frontend_node/custom_components.py): improve typing and field definitions in CustomComponentFrontendNode and ComponentFrontendNode classes
feat(template/base.py): update typing for fields in Template class and remove unnecessary imports

* refactor(inputs): remove unnecessary Optional import from typing in input_mixin.py and inputs.py files to improve code readability and maintainability

* refactor(schema.py): change 'Type' to 'type' for consistency in type annotations
refactor(schema.py): change 'list' to 'List' and 'Literal' to 'literal' for correct type hinting in create_input_schema function

* refactor(utils.py): change typing annotations from List and Union to list and type to follow PEP 585 standards
refactor(test_schema.py): change typing annotations from List and List to list and list to follow PEP 585 standards
refactor(test_graph.py): change typing annotations from Type and Union to type and Vertex | None to follow PEP 585 standards
refactor(test_io_schema.py): change typing annotations from List and List to list and list to follow PEP 585 standards
refactor(test_custom_component.py): update file reading method to remove unnecessary "r" mode
refactor(test_helper_components.py): update file reading method to remove unnecessary "r" mode
refactor(test_kubernetes_secrets.py): update b64encode method argument to bytes type
refactor(test_template.py): change typing annotations from Optional, List, and Dict to list, dict, and None to follow PEP 585 standards

* [autofix.ci] apply automated fixes

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

src/backend/tests/integration/utils.py

@@ -1,5 +1,4 @@
 import os
-from typing import List
 
 from astrapy.admin import parse_api_endpoint
 from langflow.field_typing import Embeddings
@@ -43,10 +42,10 @@ class MockEmbeddings(Embeddings):
     def mock_embedding(text: str):
         return [len(text) / 2, len(text) / 5, len(text) / 10]
 
-    def embed_documents(self, texts: List[str]) -> List[List[float]]:
+    def embed_documents(self, texts: list[str]) -> list[list[float]]:
         self.embedded_documents = texts
         return [self.mock_embedding(text) for text in texts]
 
-    def embed_query(self, text: str) -> List[float]:
+    def embed_query(self, text: str) -> list[float]:
         self.embedded_query = text
         return self.mock_embedding(text)

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

@@ -1,7 +1,6 @@
 import copy
 import json
 import pickle
-from typing import Type, Union
 
 import pytest
 
@@ -62,7 +61,7 @@ def sample_nodes():
     ]
 
 
-def get_node_by_type(graph, node_type: Type[Vertex]) -> Union[Vertex, None]:
+def get_node_by_type(graph, node_type: type[Vertex]) -> Vertex | None:
     """Get a node by type"""
     return next((node for node in graph.vertices if isinstance(node, node_type)), None)
 

src/backend/tests/unit/test_custom_component.py

@@ -19,7 +19,7 @@ def client():
 
 @pytest.fixture
 def code_component_with_multiple_outputs():
-    with open("src/backend/tests/data/component_multiple_outputs.py", "r") as f:
+    with open("src/backend/tests/data/component_multiple_outputs.py") as f:
         code = f.read()
         return Component(_code=code)
 

src/backend/tests/unit/test_helper_components.py

@@ -39,7 +39,7 @@ def client():
 def test_uuid_generator_component():
     # Arrange
     uuid_generator_component = helpers.IDGeneratorComponent()
-    uuid_generator_component._code = open(helpers.IDGenerator.__file__, "r").read()
+    uuid_generator_component._code = open(helpers.IDGenerator.__file__).read()
 
     frontend_node, _ = build_custom_component_template(uuid_generator_component)
 

src/backend/tests/unit/test_kubernetes_secrets.py

@@ -33,13 +33,13 @@ def test_create_secret(secret_manager, mocker):
             kind="Secret",
             metadata=V1ObjectMeta(name="test-secret"),
             type="Opaque",
-            data={"key": b64encode("value".encode()).decode()},
+            data={"key": b64encode(b"value").decode()},
         ),
     )
 
 
 def test_get_secret(secret_manager, mocker):
-    mock_secret = V1Secret(data={"key": b64encode("value".encode()).decode()})
+    mock_secret = V1Secret(data={"key": b64encode(b"value").decode()})
     mocker.patch.object(secret_manager.core_api, "read_namespaced_secret", return_value=mock_secret)
 
     secret_data = secret_manager.get_secret(name="test-secret")

src/backend/tests/unit/test_template.py

@@ -1,5 +1,4 @@
 import importlib
-from typing import Dict, List, Optional
 
 import pytest
 from langflow.utils.util import build_template_from_function, get_base_classes, get_default_factory
@@ -27,14 +26,14 @@ class Child(Parent):
 class ExampleClass1(BaseModel):
     """Example class 1."""
 
-    def __init__(self, data: Optional[List[int]] = None):
+    def __init__(self, data: list[int] | None = None):
         self.data = data or [1, 2, 3]
 
 
 class ExampleClass2(BaseModel):
     """Example class 2."""
 
-    def __init__(self, data: Optional[Dict[str, int]] = None):
+    def __init__(self, data: dict[str, int] | None = None):
         self.data = data or {"a": 1, "b": 2, "c": 3}