fix pipe error

lib/foreman/process.rb

@@ -16,7 +16,7 @@ class Foreman::Process
   def run(pipe, basedir, environment)
     Dir.chdir(basedir) do
       with_environment(environment.merge("PORT" => port.to_s)) do
-        run_process entry.command
+        run_process entry.command, pipe
       end
     end
   end
@@ -27,7 +27,7 @@ class Foreman::Process
 
 private
 
-  def run_process(command)
+  def run_process(command, pipe)
     io = IO.popen([Foreman.runner, replace_command_env(command)], "w+")
     @pid = io.pid
     trap("SIGTERM") { "got sigterm for %d" % @pid }

spec/foreman/engine_spec.rb

@@ -24,8 +24,8 @@ describe "Foreman::Engine" do
   describe "start" do
     it "forks the processes" do
       write_procfile
-      mock.instance_of(Foreman::Process).run_process("./alpha")
+      mock.instance_of(Foreman::Process).run_process("./alpha", is_a(IO))
-      mock.instance_of(Foreman::Process).run_process("./bravo")
+      mock.instance_of(Foreman::Process).run_process("./bravo", is_a(IO))
       mock(subject).watch_for_output
       mock(subject).watch_for_termination
       subject.start
@@ -34,8 +34,8 @@ describe "Foreman::Engine" do
     it "handles concurrency" do
       write_procfile
       engine = Foreman::Engine.new("Procfile",:concurrency => "alpha=2")
-      mock.instance_of(Foreman::Process).run_process("./alpha").twice
+      mock.instance_of(Foreman::Process).run_process("./alpha", is_a(IO)).twice
-      mock.instance_of(Foreman::Process).run_process("./bravo")
+      mock.instance_of(Foreman::Process).run_process("./bravo", is_a(IO))
       mock(engine).watch_for_output
       mock(engine).watch_for_termination
       engine.start