Implement a simple Rack console

Signed-off-by: David Celis <[email protected]>

lib/rack-console.rb

@@ -0,0 +1 @@
+require 'rack/console'

lib/rack/console.rb

@@ -1,7 +1,19 @@
+require 'rack/builder'
+
 require 'rack/console/version'
 
 module Rack
-  module Console
-    # Your code goes here...
+  class Console
+    def self.start
+      Rack::Builder.parse_file('config.ru')
+
+      begin
+        require 'pry'
+        Pry.start
+      rescue LoadError
+        require 'irb'
+        IRB.start
+      end
+    end
   end
 end

lib/rack/console/version.rb

@@ -1,5 +1,5 @@
 module Rack
-  module Console
+  class Console
     class Version
       MAJOR = 1
       MINOR = 0

rack-console.gemspec

@@ -22,5 +22,7 @@ Gem::Specification.new do |s|
   s.test_files    = Dir['spec/**/*.rb']
   s.require_paths = ['lib']
 
+  s.add_dependency 'rack', '>= 1.1'
+
   s.add_development_dependency 'rspec', '~> 3.0'
 end

spec/rack/console_spec.rb

@@ -0,0 +1,13 @@
+require 'rack/console'
+require 'irb'
+
+describe Rack::Console do
+  before { Dir.chdir 'spec/support' }
+
+  it 'parses config.ru in the current working directory' do
+    expect(Rack::Builder).to receive(:parse_file).with('config.ru')
+    expect(IRB).to receive(:start)
+
+    Rack::Console.start
+  end
+end

spec/support/config.ru

@@ -0,0 +1,7 @@
+require 'rack/builder'
+
+app = Rack::Builder.new
+  map('/') { [200, { 'Content-Type' => 'text/plain' }, 'Hello world.'] }
+end
+
+run app