# VIN Discrepancies Problem¶

You run a car dealership . The inventory is tracked in two places: a database and a text file, each of which contain a set of Vehicle Identification Numbers (VINs).

They should have the same set of VINs (not necessarily in the same order).

Write a test that checks for discrepancies in the VINs. If differences exist, provide a useful message to the user for fixing them.

### Directory Structure¶

vins/
vins.txt
vins.py
test_vins.py


### Files¶

WP0AA2991YS620631
1G4GJ11Y9HP422546
4T1BG22K8VU176482
JH4KA3151KC019450
1FTYR14U2XPC03940
JH4DC4340RS000837
JH4DA9340MS002938
JH4DB1660LS017594
1GCDC14K2LE198114
JH4NA1260MT001906
2FMDA5146TBC22506

def fetch_vins_from_db():
"""Pretend to fetch VINs from a database.."""

vins = [
"WP0AA2991YS620631",
"JH4NA1150RT000268",
"4T1BG22K8VU176482",
"JH4KA3151KC019450",
"1FTYR14U2XPC03940",
"5GAEV23718J129013",
"JH4DA9340MS002938",
"JH4DB1660LS017594",
"1GCDC14K2LE198114",
"JH4NA1260MT001906",
"JH4DA3441JS029234",
"5TFUW5F13CX228552",
]

return vins

from vins import fetch_vins_from_db

def test_vin_discrepancies():
"""Check for discrepancies in VINs between vins.txt and the database"""