spec for window manager startup

lib/kopflos/xvfb.rb

@@ -41,8 +41,7 @@ def start
         sleep @wait
       else
         start_window_manager
-        log "starting... #{command.join(' ')}"
-        exec *command
+        execute
       end
     end
 
@@ -141,6 +140,11 @@ def lockfile(num=servernum)
         "/tmp/.X#{num}-lock"
       end
 
+      def execute
+        log "starting... #{command.join(' ')}"
+        exec *command
+      end
+
       def kill_server
         if @server
           Process.kill("USR1", @server)

spec/kopflos/xvfb_spec.rb

@@ -8,7 +8,7 @@ module Kopflos
 
     it "should determine font path on initialization" do
       Xvfb.should_receive(:determine_font_path)
-      Xvfb.new
+      Xvfb.new :wait => 1
     end
 
     describe 'new' do
@@ -39,6 +39,18 @@ module Kopflos
         ENV['XAUTHORITY'].should_not be_empty
         ENV['XAUTHORITY'].should_not == xauthority
       end
+
+      describe "in forked process" do
+        before :each do
+          @xvfb.stub!(:authorize).and_return(true)
+          @xvfb.stub!(:fork).and_return(nil)
+          @xvfb.stub!(:execute).and_return(true) # not really, should NOT return, it calles Kernel#exec
+        end
+        it "should start window manager" do
+          @xvfb.should_receive(:start_window_manager).and_return(true)
+          @xvfb.start
+        end
+      end
     end
 
   end