require 'test/spec'

require 'rack/builder'
require 'rack/mock'
require 'rack/showexceptions'
require 'rack/auth/basic'

context "Rack::Builder" do
  specify "chains apps by default" do
    app = Rack::Builder.new do
      use Rack::ShowExceptions
      run lambda { |env| raise "bzzzt" }
    end.to_app

    Rack::MockRequest.new(app).get("/").should.be.server_error
    Rack::MockRequest.new(app).get("/").should.be.server_error
    Rack::MockRequest.new(app).get("/").should.be.server_error
  end

  specify "has implicit #to_app" do
    app = Rack::Builder.new do
      use Rack::ShowExceptions
      run lambda { |env| raise "bzzzt" }
    end

    Rack::MockRequest.new(app).get("/").should.be.server_error
    Rack::MockRequest.new(app).get("/").should.be.server_error
    Rack::MockRequest.new(app).get("/").should.be.server_error
  end

  specify "supports blocks on use" do
    app = Rack::Builder.new do
      use Rack::ShowExceptions
      use Rack::Auth::Basic do |username, password|
        'secret' == password
      end

      run lambda { |env| [200, {}, 'Hi Boss'] }
    end

    response = Rack::MockRequest.new(app).get("/")
    response.should.be.client_error
    response.status.should.equal 401

    # with auth...
    response = Rack::MockRequest.new(app).get("/", 
        'HTTP_AUTHORIZATION' => 'Basic ' + ["joe:secret"].pack("m*"))
    response.status.should.equal 200
    response.body.to_s.should.equal 'Hi Boss'
  end

  specify "has explicit #to_app" do
    app = Rack::Builder.app do
      use Rack::ShowExceptions
      run lambda { |env| raise "bzzzt" }
    end

    Rack::MockRequest.new(app).get("/").should.be.server_error
    Rack::MockRequest.new(app).get("/").should.be.server_error
    Rack::MockRequest.new(app).get("/").should.be.server_error
  end

  specify "apps are initialized once" do
    app = Rack::Builder.new do
      class AppClass
        def initialize
          @called = 0
        end
        def call(env)
          raise "bzzzt"  if @called > 0
        @called += 1
          [200, {'Content-Type' => 'text/plain'}, 'OK']
        end
      end

      use Rack::ShowExceptions
      run AppClass.new
    end

    Rack::MockRequest.new(app).get("/").status.should.equal 200
    Rack::MockRequest.new(app).get("/").should.be.server_error
  end

end