Added Rspec::Generators::GeneratorGenerator

Author: yhirano55

lib/generators/rspec/generator/generator_generator.rb

@@ -0,0 +1,25 @@
+require 'generators/rspec'
+
+module Rspec
+  module Generators
+    # @private
+    class GeneratorGenerator < Base
+      class_option :namespace, :type => :boolean, :default => true,
+                               :desc => "Namespace generator under lib/generators/name"
+
+      def generate_generator_spec
+        template 'generator_spec.rb', File.join('spec/lib/generators', class_path, "#{file_name}_generator_spec.rb")
+      end
+
+    private
+
+      def generator_path
+        if options[:namespace]
+          File.join("generators", class_path, file_name, "#{file_name}_generator")
+        else
+          File.join("generators", class_path, "#{file_name}_generator")
+        end
+      end
+    end
+  end
+end

lib/generators/rspec/generator/templates/generator_spec.rb

@@ -0,0 +1,8 @@
+require 'rails_helper'
+require '<%= generator_path %>'
+
+<% module_namespacing do -%>
+RSpec.describe <%= class_name %>Generator, <%= type_metatag(:generator) %> do
+  pending "add some examples to (or delete) #{__FILE__}"
+end
+<% end -%>

spec/generators/rspec/generator/generator_generator_spec.rb

@@ -0,0 +1,39 @@
+# Generators are not automatically loaded by Rails
+require 'generators/rspec/generator/generator_generator'
+require 'support/generators'
+
+RSpec.describe Rspec::Generators::GeneratorGenerator, :type => :generator do
+  setup_default_destination
+
+  describe 'generator specs' do
+    describe 'not namespaced' do
+      before do
+        run_generator %w(awesome)
+      end
+
+      subject { file('spec/lib/generators/awesome_generator_spec.rb') }
+
+      describe 'the spec' do
+        it { is_expected.to exist }
+        it { is_expected.to contain(/require 'rails_helper'/) }
+        it { is_expected.to contain(/require 'generators\/awesome\/awesome_generator'/) }
+        it { is_expected.to contain(/^RSpec.describe AwesomeGenerator, #{type_metatag(:generator)}/) }
+      end
+    end
+
+    describe 'namespaced' do
+      before do
+        run_generator %w(wonderful/awesome)
+      end
+
+      subject { file('spec/lib/generators/wonderful/awesome_generator_spec.rb') }
+
+      describe 'the spec' do
+        it { is_expected.to exist }
+        it { is_expected.to contain(/require 'rails_helper'/) }
+        it { is_expected.to contain(/require 'generators\/wonderful\/awesome\/awesome_generator'/) }
+        it { is_expected.to contain(/^RSpec.describe Wonderful::AwesomeGenerator, #{type_metatag(:generator)}/) }
+      end
+    end
+  end
+end