Add tests for the rc command

spec/homesick_spec.rb

@@ -101,6 +101,44 @@ describe 'homesick' do
     end
   end
 
+  describe 'rc' do
+    let(:castle) { given_castle('glencairn') }
+
+    context 'when told to do so' do
+      before do
+        expect($stdout).to receive(:print)
+        expect($stdin).to receive(:gets).and_return('y')
+      end
+
+      it 'executes the .homesickrc' do
+        castle.file('.homesickrc') do |file|
+          file << "File.open(Dir.pwd + '/testing', 'w') { |f| f.print 'testing' }"
+        end
+
+        homesick.rc castle
+
+        castle.join('testing').should exist
+      end
+    end
+
+    context 'when told not to do so' do
+      before do
+        expect($stdout).to receive(:print)
+        expect($stdin).to receive(:gets).and_return('n')
+      end
+
+      it 'does not execute the .homesickrc' do
+        castle.file('.homesickrc') do |file|
+          file << "File.open(Dir.pwd + '/testing', 'w') { |f| f.print 'testing' }"
+        end
+
+        homesick.rc castle
+
+        castle.join('testing').should_not exist
+      end
+    end
+  end
+
   describe 'symlink' do
     let(:castle) { given_castle('glencairn') }