Rails Test/Spec File Helpers

spec_file_helpers.rb

def create_tempfile(str_data, file_name: nil)
  file_basename = file_name.to_s.split('.').first || "Example File"

  file_ext = file_name.to_s.split('.').last || "csv"

  ### Must seperate basename and extension to array for tempfile new syntax
  ### https://ruby-doc.org/stdlib-3.0.2/libdoc/tempfile/rdoc/Tempfile.html#method-c-new
  tmp_file = Tempfile.new([file_basename, ".#{file_ext}"], binmode: true)

  tmp_file << str_data

  return tmp_file
end

def sample_pdf_upload
  sample_path = Rails.root.join("spec/fixtures/sample_file.pdf")

  #fixture_file_upload(sample_path, 'application/pdf') ### MINITEST
  Rack::Test::UploadedFile.new(sample_path) ### RSPEC
end

def sample_csv_upload
  sample_path = Rails.root.join("spec/fixtures/sample_file.csv")

  #fixture_file_upload(sample_path, 'text/csv') ### MINITEST
  Rack::Test::UploadedFile.new(sample_path) ### RSPEC
end

def csv_upload(file)
  sample_path = Rails.root.join("spec/fixtures/", file)

  #fixture_file_upload(sample_path, 'text/csv') ### MINITEST
  Rack::Test::UploadedFile.new(sample_path) ### RSPEC
end

def file_upload_from_string(str_file_data)
  tmp_file = create_tempfile(str_file_data)
  Rack::Test::UploadedFile.new(tmp_file)
end

def csv_string_from_data(headers:, row_data:)
  csv_str = CSV.generate do |csv|
    if headers.first.is_a?(Array)
      headers.each do |header_row|
        csv << header_row
      end
    else
      csv << headers
    end

    row_data.each do |row|
      csv << row
    end
  end

  return csv_str
end