Add test for rack handler

test/test_rack_handler.rb

@@ -1,4 +1,7 @@
 require 'test/unit'
+require 'test/testhelp'
+require 'puma'
+require 'rack/handler/puma'
 
 class TestPumaUnixSocket < Test::Unit::TestCase
   def test_handler
@@ -8,3 +11,44 @@ class TestPumaUnixSocket < Test::Unit::TestCase
     assert_equal Rack::Handler::Puma, handler
   end
 end
+
+class TestPathHandler < Test::Unit::TestCase
+  def app
+    Proc.new {|env| @input = env; [200, {}, ["hello world"]]}
+  end
+
+  def setup
+    @input = nil
+  end
+
+  def in_handler(app, options = {})
+    options[:Port] ||= 9998
+    @server = nil
+    thread = Thread.new do
+      Rack::Handler::Puma.run(app, options) do |s|
+        @server = s
+      end
+    end
+    thread.abort_on_exception = true
+
+    # Wait for server to boot
+    Timeout.timeout(10) do
+      until @server && @server.running
+        sleep 0.01
+      end
+    end
+    yield @server
+  ensure
+    @server.stop(true) if @server
+    thread.join if thread
+  end
+
+
+  def test_handler_boots
+    in_handler(app) do |server|
+      hit(["http://0.0.0.0:9998/test"])
+      assert_equal("/test", @input["PATH_INFO"])
+    end
+  end
+
+end