Initial support for MiniTest

Closes #68, #75

features/fixture_replacement_config.feature

@@ -50,3 +50,25 @@ Feature:
       | spec/factories/users.rb |
     But the following files should exist:
       | custom/dir/users.rb |
+
+  Scenario: Using Factory Girl and Factory Girl Rails with MiniTest should generate a factory file
+    When I add "minitest" as a dependency
+    And I configure the testing framework to use MiniTest
+    And I successfully run `bundle install`
+    And I successfully run `bundle exec rails generate model User name:string`
+    Then the following files should exist:
+      | test/factories/users.rb |
+    But the following files should not exist:
+      | spec/fixtures/users.yml |
+
+  Scenario: Using Factory Girl and Factory Girl Rails with MiniTest and a custom directory should generate a factory file
+    When I configure the factories directory as "custom/dir"
+    And I add "minitest" as a dependency
+    And I configure the testing framework to use MiniTest
+    And I successfully run `bundle install`
+    And I successfully run `bundle exec rails generate model User name:string`
+    Then the following files should exist:
+      | custom/dir/users.rb |
+    But the following files should not exist:
+      | spec/fixtures/users.yml |
+    And the file "test/models/user_test.rb" should contain "MiniTest::Rails::ActiveSupport::TestCase"

features/step_definitions/rails_steps.rb

@@ -28,3 +28,16 @@ class Testapp::Application
 end
   END
 end
+
+When /^I configure the testing framework to use MiniTest$/ do
+  append_to_file('Gemfile', %{gem "minitest-rails", :group => [:development, :test]\n})
+  step %{I successfully run `rails generate mini_test:install`}
+
+  append_to_file File.join('config', 'application.rb'), <<-END
+class Testapp::Application
+  config.generators do |g|
+    g.test_framework :mini_test, :fixture => false, :fixture_replacement => :factory_girl
+  end
+end
+  END
+end

lib/factory_girl_rails/railtie.rb

@@ -13,7 +13,7 @@ module FactoryGirl
           generators.fixture_replacement :factory_girl, :dir => 'spec/factories'
         end
       else
-        generators.test_framework :test_unit, :fixture => false, :fixture_replacement => :factory_girl
+        generators.test_framework rails_options[:test_framework], :fixture => false, :fixture_replacement => :factory_girl
       end
     end