Refactor test cases for improved readability and consistency

- Updated test functions in various test files to enhance code clarity by formatting long lines and improving indentation.
- Adjusted assertions to use multi-line formatting for better readability.
- Added new test cases for theme settings API to ensure proper functionality.
- Ensured consistent use of line breaks and spacing across test files for uniformity.

routes/equipment.py

@@ -23,7 +23,9 @@ class EquipmentRead(EquipmentCreate):
 
 
 @router.post("/", response_model=EquipmentRead)
-async def create_equipment(item: EquipmentCreate, db: Session = Depends(get_db)):
+async def create_equipment(
+    item: EquipmentCreate, db: Session = Depends(get_db)
+):
     db_item = Equipment(**item.model_dump())
     db.add(db_item)
     db.commit()