Raise Rack version requirement to 2.x

.travis.yml

@@ -12,12 +12,7 @@ rvm:
 sudo: false
 
 matrix:
-  include:
-    - { rvm: 2.2, env: rack=master }
-    - { rvm: 2.2, env: tilt=master }
   allow_failures:
-    - env: rack=master
-    - env: tilt=master
     - rvm: ruby-head
     - rvm: jruby-head
     - rvm: rbx-2

Gemfile

@@ -11,22 +11,10 @@ source 'https://rubygems.org' unless ENV['QUICK']
 gemspec
 
 gem 'rake'
+gem 'rack', github: 'rack/rack'
 gem 'rack-test', '>= 0.6.2'
 gem "minitest", "~> 5.0"
 
-# Allows stuff like `tilt=1.2.2 bundle install` or `tilt=master ...`.
-# Used by the CI.
-repos  = {'tilt' => "rtomayko/tilt", 'rack' => "rack/rack"}
-
-%w[tilt rack].each do |lib|
-  dep = case ENV[lib]
-        when 'stable', nil then nil
-        when /(\d+\.)+\d+/ then "~> " + ENV[lib].sub("#{lib}-", '')
-        else {:github => repos[lib], :branch => dep}
-        end
-  gem lib, dep
-end
-
 if RUBY_ENGINE == 'jruby'
   gem 'nokogiri', '!= 1.5.0'
   gem 'jruby-openssl'
@@ -42,6 +30,9 @@ if RUBY_ENGINE == "ruby"
   gem 'rdiscount'
   gem 'RedCloth'
   gem 'puma'
+  #TODO: remove explicit require once net-http-server does it
+  #(apparently it was shipped w/ stdlib in Rubies < 2.2.2)
+  gem 'gserver'
   gem 'net-http-server'
   gem 'yajl-ruby'
   gem 'nokogiri'

lib/sinatra/base.rb

@@ -150,7 +150,7 @@ module Sinatra
       if calculate_content_length?
         # if some other code has already set Content-Length, don't muck with it
         # currently, this would be the static file-handler
-        headers["Content-Length"] = body.inject(0) { |l, p| l + Rack::Utils.bytesize(p) }.to_s
+        headers["Content-Length"] = body.inject(0) { |l, p| l + p.bytesize }.to_s
       end
 
       [status.to_i, headers, result]

lib/sinatra/show_exceptions.rb

@@ -1,4 +1,4 @@
-require 'rack/showexceptions'
+require 'rack/show_exceptions'
 
 module Sinatra
   # Sinatra::ShowExceptions catches all exceptions raised from the app it
@@ -40,7 +40,7 @@ module Sinatra
         500,
         {
           "Content-Type" => content_type,
-          "Content-Length" => Rack::Utils.bytesize(body.join).to_s
+          "Content-Length" => body.join.bytesize.to_s
         },
         body
       ]

sinatra.gemspec

@@ -15,7 +15,7 @@ Gem::Specification.new 'sinatra', Sinatra::VERSION do |s|
 
   s.required_ruby_version = '>= 2.2.0'
 
-  s.add_dependency 'rack', '>= 1.6'
+  s.add_dependency 'rack', '~> 2.0.0.alpha'
   s.add_dependency 'tilt', '~> 2.0'
   s.add_dependency 'rack-protection', '~> 1.5'
 end

test/helper.rb

@@ -3,12 +3,9 @@ Encoding.default_external = "UTF-8" if defined? Encoding
 
 RUBY_ENGINE = 'ruby' unless defined? RUBY_ENGINE
 
-begin
-  require 'rack'
-rescue LoadError
-  require 'rubygems'
-  require 'rack'
-end
+require 'bundler'
+require 'bundler/setup'
+require 'rack'
 
 testdir = File.dirname(__FILE__)
 $LOAD_PATH.unshift testdir unless $LOAD_PATH.include?(testdir)