module TestEnvHelpers
  require 'producer/core/testing'

  def env
    @_env ||= build_env
  end

  def output
    env.output.string
  end

  def error_output
    env.error_output.string
  end

  def remote_fs
    env.remote.fs
  end

  def expect_execution(command)
    opts = { expected_from: caller.first }
    RSpec::Mocks
      .expect_message(env.remote, :execute, opts)
      .with(command, env.output, env.error_output)
  end


  private

  def build_env
    Producer::Core::Env.new(
      output:       StringIO.new,
      error_output: StringIO.new,
      remote:       build_remote
    )
  end

  def build_remote
    fs = RSpec::Mocks::Double.new('remote fs')
    remote = Producer::Core::Testing::MockRemote.new('some_host.test')
    remote.define_singleton_method(:fs) { fs }
    remote
  end
end