rake support

lib/penchant/dot_penchant.rb

@@ -11,6 +11,18 @@ module Penchant
     def run(env = nil)
       instance_eval(File.read('.penchant'))
     end
+
+    def rake(*tasks)
+      command = [ "rake", *tasks ]
+      command.unshift("bundle exec") if gemfile?
+      Kernel.system command.join(' ')
+    end
+
+    private
+    def gemfile?
+      File.file?('Gemfile')
+    end
+
   end
 end
 

spec/lib/penchant/dot_penchant_spec.rb

@@ -16,5 +16,30 @@ describe Penchant::DotPenchant do
       dot_file.instance_variable_get(:@did_run).should == :this
     end
   end
+
+  let(:dot_file) { described_class.new }
+
+  describe '#rake' do
+    context 'without Gemfile' do
+      before do
+        Kernel.expects(:system).with('rake task1 task2')
+      end
+
+      it 'should run the rake task via system' do
+        dot_file.rake("task1", "task2")
+      end
+    end
+
+    context 'with Gemfile' do
+      before do
+        File.open('Gemfile', 'wb')
+        Kernel.expects(:system).with('bundle exec rake task1 task2')
+      end
+
+      it 'should run the rake task via system' do
+        dot_file.rake("task1", "task2")
+      end
+    end
+  end
 end