Update config to use uninitialized server

src/kemal.cr

@@ -11,26 +11,28 @@ module Kemal
     config.server = HTTP::Server.new(config.host_binding.not_nil!, config.port, config.handlers)
     config.server.ssl = config.ssl
 
-    Signal::INT.trap {
-      config.logger.write "Kemal is going to take a rest!\n"
-      config.server.close
-      exit
-    }
+    unless config.env == "test"
+      Signal::INT.trap {
+        config.logger.write "Kemal is going to take a rest!\n"
+        config.server.close
+        exit
+      }
 
-    # This route serves the built-in images for not_found and exceptions.
-    get "/__kemal__/:image" do |env|
-      image = env.params.url["image"]
-      file_path = File.expand_path("libs/kemal/images/#{image}", Dir.current)
-      if File.exists? file_path
-        env.response.headers.add "Content-Type", "application/octet-stream"
-        env.response.content_length = File.size(file_path)
-        File.open(file_path) do |file|
-          IO.copy(file, env.response)
+      # This route serves the built-in images for not_found and exceptions.
+      get "/__kemal__/:image" do |env|
+        image = env.params.url["image"]
+        file_path = File.expand_path("libs/kemal/images/#{image}", Dir.current)
+        if File.exists? file_path
+          env.response.headers.add "Content-Type", "application/octet-stream"
+          env.response.content_length = File.size(file_path)
+          File.open(file_path) do |file|
+            IO.copy(file, env.response)
+          end
         end
       end
-    end
 
-    config.logger.write "[#{config.env}] Kemal is ready to lead at #{config.scheme}://#{config.host_binding}:#{config.port}\n"
-    config.server.listen
+      config.logger.write "[#{config.env}] Kemal is ready to lead at #{config.scheme}://#{config.host_binding}:#{config.port}\n"
+      config.server.listen
+    end
   end
 end

src/kemal/config.cr

@@ -2,8 +2,6 @@ module Kemal
   class Config
     INSTANCE = Config.new
     HANDLERS = [] of HTTP::Handler
-    
-    @server : HTTP::Server
 
     property host_binding, ssl, port, env, public_folder, logging,
       always_rescue, error_handler, serve_static, server
@@ -18,6 +16,7 @@ module Kemal
       @logger = nil
       @always_rescue = true
       @error_handler = nil
+      @server = uninitialized HTTP::Server
     end
 
     def logger