Cucumber/Aruba Thor: testing multiple commands in a single scenario, first passes and second fails

Question

I'm trying to write a small ruby gem that does some template generating, using Bundler and Thor. I'm writing the tests in Cucumber and Aruba, and I'm having trouble getting them to pass.

I have the following Thor CLI class defined in the app:

require 'thor'
require 'sleipnir'
require 'sleipnir/generators/layout'
require 'sleipnir/generators/app'

module Sleipnir
  class CLI < Thor

    desc "app", "Generates an app directory and copies the appropriate files"
    def app(app_name)
      Sleipnir::Generators::App.start([app_name])
    end

    desc "layout", "Generates specific layout based on template type"
    def layout(template_type)
      Sleipnir::Generators::Layout.start([template_type])
    end
  end
end

This is the app.rb file:

require 'thor/group'

module Sleipnir
  module Generators
    class App < Thor::Group
      include Thor::Actions

      argument :app_name, :type => :string
      class_option :template_type, :default => :erb, :required => true

      def self.source_root
        File.dirname(__FILE__)
      end

      def create_app_dir
        empty_directory(app_name)
      end

      def copy_app_scaffold
        directory("app", app_name)
      end
    end
  end
end

And the layout.rb file:

require 'thor/group'

module Sleipnir
  module Generators
    class Layout < Thor::Group
      include Thor::Actions

      class_option :template_type, :default => :erb, :required => true

      def self.source_root
        File.dirname(__FILE__) + "/template"
      end

      def copy_layout
        template_type = options[:template_type]
        template("layout_template.#{template_type}", "views/layout.#{template_type}")
      end
    end
  end
end

I have a cucumber test written for the app method, and it passes. However, the layout method is failing. Here is the test:

Feature: Generate
  In order to generate templates
  As a CLI
  I want to run the generator

  Scenario: Layout
    When I run `sleipnir app test_app`
    Then the following directories should exist:
      | test_app/views |
    When I run `sleipnir layout --template_type "erb"`
    Then the following files should exist:
      | test_app/views/layout.erb |

The first part of the test passes just fine (i.e. the directory is created), but the part about verifying the file exists fails. I've checked the file structure, and the layout_template.erb file exists, so I can't figure out why it isn't be templated properly.

score 0 · Answer 1 · answered Dec 11 '14 at 06:18

Unfortunately, Aruba does not support this: https://github.com/cucumber/aruba/issues/140.

But writing your own step definition isn't bad, just have that you want to execute first happen before the command you pass in. See https://github.com/cucumber/cucumber/wiki/Step-Definitions for examples.

Cucumber/Aruba Thor: testing multiple commands in a single scenario, first passes and second fails

1 Answers1