Test case for https://github.com/capistrano/capistrano/issues/1748

Capfile

require "capistrano/setup"
require "capistrano/deploy"

deploy.rb

lock '3.6'

set :application, 'my_app_name'
set :repo_url, 'git@example.com:me/my_repo.git'

set :latest_release_directory, '/tmp'

namespace :test_case do
  desc 'A test for issue #1748'
  task :testing do
    on roles(:app) do |host|
      within fetch(:latest_release_directory) do
        puts fetch(:latest_release_directory)
        execute %Q( pwd )
      end
    end
  end
end

Gemfile

source 'https://rubygems.org'

gem 'capistrano'

production.rb

server 'localhost', roles: %w{app db web}