Advancement

Progressive application retirement with TDD.

Advancement will help you write migrations and tests with your legacy data. Then you can retire legacy applications making possible continius integration in a phased rollout model.

Add this line to your application's Gemfile:

gem 'advancement'

And then execute:

$ bundle

Generate the migration with test and fixtures

$ rails generate advancement places.dbf
create  app/advancement/places_migration.rb
create  test/unit/advancement/places_migration_test.rb
create  test/unit/advancement/fixtures/places.yml

Write some tests for the migrations:

require 'test_helper'

class PlacesMigrationTest < Advancement::TestCase

  def test_two_places_are_migrated
    run_migration
    assert_migrated Place, :count => 2
  end

end

Configure this migration in 'app/advancement/places_migration.rb'

# places_migration.rb

class PlacesMigration < Advancement::Migration

  Constrains = [:name]

  def build_place seed
    {name: seed.id, lat: seed.latit, lng: seed.longit}
  end

end

Configure migrations in 'config/advancement.rb'

# advancement.rb

Advancement.configure do |config|
  config.encoding = "CP1252"
  config.tables = ["places.dbf"]
end

Then run your migrations with

$ rake advancement:run_migrations

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Added some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request