diff --git a/Backend/requirements.txt b/Backend/requirements.txt
index 0509fb7b..316249a8 100644
--- a/Backend/requirements.txt
+++ b/Backend/requirements.txt
@@ -6,6 +6,7 @@ colorama==0.4.6
 distro==1.8.0
 et-xmlfile==1.1.0
 fastapi==0.87.0
+flake8==6.0.0
 greenlet==2.0.1
 gunicorn==20.1.0
 h11==0.14.0
@@ -13,16 +14,20 @@ httpcore==0.16.1
 httptools==0.5.0
 httpx==0.23.1
 idna==3.4
+mccabe==0.7.0
 mysql-connector-python==8.0.31
 newrelic==8.4.0
 numpy==1.23.5
 openai==0.25.0
+opencv-python==4.6.0.66
 openpyxl==3.0.10
 pandas==1.5.2
 pandas-stubs==1.5.2.221124
 pdfkit==1.0.0
 protobuf==3.20.1
+pycodestyle==2.10.0
 pydantic==1.10.2
+pyflakes==3.0.1
 PyMySQL==1.0.2
 PyMysqlDB==0.0.2
 python-dateutil==2.8.2
@@ -42,7 +47,7 @@ starlette==0.21.0
 tabula-py==2.6.0
 tqdm==4.64.1
 types-pytz==2022.6.0.1
-typing-extensions==4.4.0
+typing_extensions==4.4.0
 urllib3==1.26.13
 uvicorn==0.19.0
 uvloop==0.17.0
diff --git a/tests/test_backend/flask8_script.txt b/tests/test_backend/flask8_script.txt
new file mode 100644
index 00000000..999fffd4
--- /dev/null
+++ b/tests/test_backend/flask8_script.txt
@@ -0,0 +1 @@
+flake8 Backenf
\ No newline at end of file
diff --git a/tests/test_backend/test_controllers/test_convert_file.py b/tests/test_backend/test_controllers/test_convert_file.py
index 3a390149..fd66ebe3 100644
--- a/tests/test_backend/test_controllers/test_convert_file.py
+++ b/tests/test_backend/test_controllers/test_convert_file.py
@@ -1,2 +1,40 @@
 #!/usr/bin/python3
-""" TEST FOR CONVERT FILE FUNCTIONS """
\ No newline at end of file
+""" TEST FOR CONVERT FILE FUNCTIONS """
+from fastapi.testclient import TestClient
+from fastapi import File, UploadFile, FASTAPI
+from fastapi import Response, status
+
+app = FASTAPI()
+
+def read_root():
+    return {"Hello": "World"}
+
+client = TestClient(app)
+test_file = ["dummy_account_statement.csv", "dummy_sales_record.csv",]
+
+# def test_file_conversion(filename):
+#     response = client.post("/upload")
+#     files = [("files", open("dummy_account_statement.csv", "rb")), ("files", open("dummy_sales_record.csv", "rb"))]
+#   #TODO how to upload a file
+#   # Initialize an empty string to store the letters after the period
+#     letters_after_period = ""
+
+#     # Loop through each character in the string
+#     for ch in test_file:
+#         # Check if the current character is a period
+#         if ch == ".":
+#             # If it is, save all the remaining characters in the string after the period
+#             letters_after_period = test_file[test_file.index(ch)+1:]
+
+#     # Print the letters after the period
+#     print(letters_after_period)
+
+#     assert response.status_code == 200
+#     assert response.j
+
+
+def test_file_upload():
+  files = [("files", open("dummy_account_statement.csv", "rb")), ("files", open("dummy_sales_record.csv", "rb"))]
+  #TODO how to upload a file
+  response = client.post('/upload', files=files)
+  assert response.status_code == status.HTTP_201_CREATED
\ No newline at end of file