add test for #473

test/integration/app.rb

@@ -33,4 +33,32 @@
   end
 end
 
+set :out, nil
+get '/async' do
+  stream(:keep_open) { |o| (settings.out = o) << "hi!" }
+end
+
+get '/send' do
+  settings.out << params[:msg] if params[:msg]
+  settings.out.close if params[:close]
+  "ok"
+end
+
+class Subclass < Sinatra::Base
+  set :out, nil
+  get '/subclass/async' do
+    settings.out << msg and halt(204) if params[:msg]
+    settings.out.close  and halt(204) if params[:close]
+    stream(:keep_open) { |o| settings.out = o }
+  end
+
+  get '/subclass/send' do
+    settings.out << params[:msg] if params[:msg]
+    settings.out.close if params[:close]
+    "ok"
+  end
+end
+
+use Subclass
+
 $stderr.puts "starting"

test/integration_test.rb

@@ -1,5 +1,6 @@
 require File.expand_path('../helper', __FILE__)
 require File.expand_path('../integration_helper', __FILE__)
+require 'timeout'
 
 # These tests start a real server and talk to it over TCP.
 # Every test runs with every detected server.
@@ -32,6 +33,43 @@ class IntegrationTest < Test::Unit::TestCase
     assert times[2] - times[1] > 1
   end
 
+  it 'streams async' do
+    next unless server.name == 'thin'
+
+    Timeout.timeout(3) do
+      chunks = []
+      server.get_stream '/async' do |chunk|
+        next if chunk.empty?
+        chunks << chunk
+        case chunk
+        when "hi!"   then server.get "/send?msg=hello"
+        when "hello" then server.get "/send?close=1"
+        end
+      end
+
+      assert_equal ['hi!', 'hello'], chunks
+    end
+  end
+
+  it 'streams async from subclass' do
+    next unless server.name == 'thin'
+
+    Timeout.timeout(3) do
+      chunks = []
+      server.get_stream '/subclass/async' do |chunk|
+        next if chunk.empty?
+        chunks << chunk
+        case chunk
+        when "hi!"   then server.get "/subclass/send?msg=hello"
+        when "hello" then server.get "/subclass/send?close=1"
+        end
+      end
+
+      assert_equal ['hi!', 'hello'], chunks
+    end
+  end
+
+
   it 'starts the correct server' do
     exp = %r{
       ==\sSinatra/#{Sinatra::VERSION}\s