Assert expected result on file

[mrebiai]

If we consider these files...

input.dat

input1
input2

expected-output.dat

output1
output2

... it would be interesting to add assertions with a expected file

 Scenario: Nominal with file
    When records from file with value are sent
      | topic_alias | key           | file |
      | topic-in     | my-key     | features/records/input.dat |
    Then expected records
      | topic_alias| key            | file |
      | topic-out  | my-key     | features/records/expected-output.dat |