Mock Simple FTP

gistfile1.rb

# add in a before(:all) in your test suite for example
ls_command = [
  "-rw-r--r--    1 ftp      ftp      671686268 Feb 21 03:14 some_file",
  "drw-r--r--    1 ftp      ftp      671686268 Feb 21 03:14 directory",
  # ...
]

class FakeFtp < OpenStruct
  # So that for example fake_ftp.chdir("path/to/dir") will be send as fake_ftp.chdir
  def method_missing(method, *args)
    self[method]
  end
end

@fake_ftp = FakeFtp.new({
  pwd: "/some/folder",
  chdir: true,
  list: ls_command,
  getbinaryfile: "binary_file_data",
  gettextfile: "text_file_data",
  # add anything here really
})

# rspec type mock, make sure Net::Ftp.new will return our fake ftp object
allow(Net::FTP).to receive(:new) { @fake_ftp }