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ruby-on-railsminitest

Rails Minitest to handle file creation

An application generates .png files that get written to the application's public directory.

IO.binwrite("public/ddx/#{@item.id}/c_#{@item.section_id}_#{@item.aisle_id}.png", png.to_s)

However testing the method leads to the test failing to handle a public directory

Errno::ENOENT: No such file or directory @ rb_sysopen - public/ddx/1622972374/c_2_31.png

the 1622972374 represents item.id

How can minitest be coerced to handling this case?

Solution

  • Don't ask how to code minitest, change your code first, make the image path work on both side

    image_path = Rails.root.join('public', 'ddx', ...)
IO.binwrite(image_path, ...)