Added initializer for cucumber as well

features/cli/init.feature

@@ -41,6 +41,22 @@ Feature: Initialize project with "proxy_rb"
     0 examples, 0 failures
     """
 
+  Scenario: Create files for Cucumber
+    When I successfully run `proxy_rb init --test-framework cucumber`
+    And the file "features/support/proxy_rb.rb" should contain:
+    """
+    require 'proxy_rb/cucumber'
+    """
+    And the file "Gemfile" should contain:
+    """
+    gem 'proxy_rb'
+    """
+    When I successfully run `rspec`
+    Then the output should contain:
+    """
+    0 examples, 0 failures
+    """
+
   Scenario: Unknown Test Framework
     When I run `proxy_rb init --test-framework unknown`
     Then the output should contain:

lib/proxy_rb/cli.rb

@@ -19,7 +19,7 @@ def console
     end
 
     desc 'init', 'Initialize proxy_rb'
-    option :test_framework, default: 'rspec', enum: %w(rspec), desc: 'Choose which test framework to use'
+    option :test_framework, default: 'rspec', enum: %w(rspec cucumber), desc: 'Choose which test framework to use'
     def init
       ProxyRb::Initializer.new.call(options[:test_framework])
     end

lib/proxy_rb/initializer.rb

@@ -34,29 +34,6 @@ def add_gem
   end
 end
 
-# ProxyRb
-module ProxyRb
-  # Initializers
-  module Initializers
-    # Default Initializer
-    #
-    # This handles invalid values for initializer.
-    #
-    # @private
-    class FailingInitializer
-      class << self
-        def match?(*)
-          true
-        end
-
-        def start(*)
-          raise ArgumentError, %(Unknown test framework. Please use "rspec" )
-        end
-      end
-    end
-  end
-end
-
 # ProxyRb
 module ProxyRb
   # Initializer
@@ -98,6 +75,33 @@ def create_support_file
   end
 end
 
+# ProxyRb
+module ProxyRb
+  # Initializer
+  module Initializers
+    # Add proxy_rb + rspec to project
+    #
+    # @private
+    class CucumberInitializer < Thor::Group
+      include Thor::Actions
+
+      no_commands do
+        def self.match?(framework)
+          :cucumber == framework.downcase.to_sym
+        end
+      end
+
+      def create_helper; end
+
+      def create_support_file
+        create_file 'features/support/proxy_rb.rb', <<~EOS
+        require 'proxy_rb/cucumber'
+        EOS
+      end
+    end
+  end
+end
+
 # ProxyRb
 module ProxyRb
   # The whole initializer
@@ -115,6 +119,7 @@ class Initializer
     def initialize
       @initializers = []
       @initializers << Initializers::RSpecInitializer
+      @initializers << Initializers::CucumberInitializer
     end
 
     # Create files etc.