def test_del_equipment():
make_test_file()
ft = FTInventory("test.csv")
with open('test.csv') as f:
count = sum(1 for _ in f)
ft.input = lambda _: ('1')
ft.del_equipment()
with open('test.csv') as f:
count1 = sum(1 for _ in f)
assert count1 == count -1
