Synvert snippet that converts machinist style fixture generation (like `Foo::Bar.make`) to factory_girl's one (like `build(:foo_bar)`) etc.

use_factory_girl_instead_of_machinist.rb

# synvert --load use_factory_girl_instead_of_machinist.rb --run factory_girl/use_factory_girl_instead_of_machinist .
# convert `Foo::Bar.make` to `build(:foo_bar)` etc.

require "active_support/core_ext/string"

Synvert::Rewriter.new 'factory_girl', 'use_factory_girl_instead_of_machinist' do
  %w(test/**/*.rb spec/**/*.rb features/**/*.rb).each do |file_pattern|
    within_files file_pattern do
      with_node type: 'send', message: "make" do
        name = current_node.receiver.to_source.underscore.gsub("/", "_")
        puts current_node.to_source

        case current_node.arguments.size
        when 0
          replace_with "build(:#{name})"
        else
          replace_with "build(:#{name}, #{current_node.arguments.map(&:to_source).join(", ")})"
        end
      end

      with_node type: 'send', message: "make!" do
        name = current_node.receiver.to_source.underscore.gsub("/", "_")
        puts current_node.to_source

        case current_node.arguments.size
        when 0
          replace_with "create(:#{name})"
        else
          replace_with "create(:#{name}, #{current_node.arguments.map(&:to_source).join(", ")})"
        end
      end
    end
  end
end