add ability to test full comamnd line

spec/foreman/cli_spec.rb

@@ -26,6 +26,15 @@ describe "Foreman::CLI" do
   end
 
   describe "export" do
+    describe "options" do
+      it "respects --env" do
+        write_procfile
+        write_env("envfile")
+        mock.instance_of(Foreman::Export::Upstart).export("/upstart", { "env" => "envfile" })
+        foreman %{ export upstart /upstart --env envfile }
+      end
+    end
+
     describe "with a non-existent Procfile" do
       it "prints an error" do
         mock_error(subject, "Procfile does not exist.") do

spec/spec_helper.rb

@@ -12,6 +12,10 @@ def mock_error(subject, message)
   end
 end
 
+def foreman(args)
+  Foreman::CLI.start(args.split(" "))
+end
+
 def mock_exit(&block)
   block.should raise_error(SystemExit)
 end
@@ -33,6 +37,12 @@ def write_procfile(procfile="Procfile")
   File.expand_path(procfile)
 end
 
+def write_env(env=".env")
+  File.open(env, "w") do |file|
+    file.puts "FOO=bar"
+  end
+end
+
 def load_export_templates_into_fakefs(type)
   FakeFS.deactivate!
   files = Dir[File.expand_path("../../data/export/#{type}/**", __FILE__)].inject({}) do |hash, file|