actionpack/test/controller/new_base/bare_metal_test.rb


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require "abstract_unit"

module BareMetalTest
  class BareController < ActionController::Metal
    def index
      self.response_body = "Hello world"
    end
  end

  class BareTest < ActiveSupport::TestCase
    test "response body is a Rack-compatible response" do
      status, headers, body = BareController.action(:index).call(Rack::MockRequest.env_for("/"))
      assert_equal 200, status
      string = ""

      body.each do |part|
        assert part.is_a?(String), "Each part of the body must be a String"
        string << part
      end

      assert headers.is_a?(Hash), "Headers must be a Hash"
      assert headers["Content-Type"], "Content-Type must exist"

      assert_equal "Hello world", string
    end
  end
end