Posted about 2 years ago. Visible to the public.

Spreewald: Content-Disposition not set when testing a download's filename

Precondition

  • You are not using javascript tests
  • The file is served from a public folder (not via controller)

Problem description

If you deliver files from a public folder it might be that the Content-Disposition header is not set. That's why the following spreewald step might raise an error:

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Then I should get a download with filename "..."
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expected: /filename="some.pdf"$/ got: nil (using =~) (RSpec::Expectations::ExpectationNotMetError)

Solution

One solution is to check the Content-Type header only with the following spreewald step:

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Then I should get a response with content-type "..."

Outline

How to test file downloads with tests that need javascript.

Public served

  • Look at the link of the url and check if this file exists in your public folder (Example for an image)

Server via controller

  • Write an own step which downloads the file and then makes tests with it (you can not check the url because this would be something like localhost:3000/users/4/avatar/3)
  • Override the send_file method of your controller (maybe application controller is also fine): If you are in the test suite return a text with the name of the file. Otherwise super.

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By refactoring problematic code and creating automated tests, makandra can vastly improve the maintainability of your Rails application.

Owner of this card:

Avatar
Emanuel De
Last edit:
7 months ago
by Emanuel De
About this deck:
We are makandra and do test-driven, agile Ruby on Rails software development.
License for source code
Posted by Emanuel De to makandra dev
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