Class: Opal::RSpec::RakeTask

Inherits:
Object
  • Object
show all
Includes:
Rake::DSL
Defined in:
lib/opal/rspec/rake_task.rb

Constant Summary collapse

RUNNER = 
File.expand_path('../../../../vendor/spec_runner.js', __FILE__)
PORT = 
9999
URL = 
"http://localhost:#{PORT}/"

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name = 'opal:rspec', &block) ⇒ RakeTask

Returns a new instance of RakeTask.



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# File 'lib/opal/rspec/rake_task.rb', line 87

def initialize(name = 'opal:rspec', &block)
  desc 'Run opal specs in phantomjs/node'
  task name do
    require 'rack'
    require 'webrick'

    sprockets_env = Opal::RSpec::SprocketsEnvironment.new
    app = Opal::Server.new(sprockets: sprockets_env) { |s|
      s.main = 'opal/rspec/sprockets_runner'
      s.debug = false

      block.call s, self if block
      sprockets_env.spec_pattern = self.pattern if self.pattern
      sprockets_env.spec_exclude_pattern = self.exclude_pattern
      sprockets_env.spec_files = self.files
      sprockets_env.default_path = self.default_path if self.default_path
      raise 'Cannot supply both a pattern and files!' if self.files and self.pattern
      sprockets_env.add_spec_paths_to_sprockets
    }

    Opal::Config.arity_check_enabled = arity_checking?

    # TODO: Once Opal 0.9 compatibility is established, if we're running node, add in the node stdlib requires in so RSpec can use them, also add NODE_PATH to the runner command above

    server = Thread.new do
      Thread.current.abort_on_exception = true
      Rack::Server.start(
        :app => app,
        :Port => PORT,
        :AccessLog => [],
        :Logger => WEBrick::Log.new("/dev/null"),
      )
    end

    wait_for_server
    is_phantom = runner == :phantom
    if is_phantom
      version_output = begin
        `phantomjs -v`.strip
      rescue
        warn 'Could not find phantomjs command on path!'
        exit 1
      end
      if version_output.to_f < 2
        warn "PhantomJS >= 2.0 is required but version #{version_output} is installed!"
        exit 1
      end
    end

    begin
      is_phantom ? launch_phantom(timeout) : launch_node(app)
    ensure
      server.kill
    end
  end
end

Instance Attribute Details

#arity_checking ⇒ Object

Returns the value of attribute arity_checking.



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# File 'lib/opal/rspec/rake_task.rb', line 14

def arity_checking
  @arity_checking
end

#default_path ⇒ Object

Returns the value of attribute default_path.



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# File 'lib/opal/rspec/rake_task.rb', line 14

def default_path
  @default_path
end

#exclude_pattern ⇒ Object

Returns the value of attribute exclude_pattern.



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# File 'lib/opal/rspec/rake_task.rb', line 14

def exclude_pattern
  @exclude_pattern
end

#files ⇒ Object

Returns the value of attribute files.



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# File 'lib/opal/rspec/rake_task.rb', line 14

def files
  @files
end

#pattern ⇒ Object

Returns the value of attribute pattern.



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# File 'lib/opal/rspec/rake_task.rb', line 14

def pattern
  @pattern
end

#runner ⇒ Object

Returns the value of attribute runner.



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# File 'lib/opal/rspec/rake_task.rb', line 14

def runner
  @runner
end

#timeout ⇒ Object

Returns the value of attribute timeout.



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# File 'lib/opal/rspec/rake_task.rb', line 14

def timeout
  @timeout
end

Instance Method Details

#arity_checking? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/opal/rspec/rake_task.rb', line 16

def arity_checking?
  setting = @arity_checking || :enabled
  setting == :enabled
end

#get_load_asset_code(server) ⇒ Object 



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# File 'lib/opal/rspec/rake_task.rb', line 34

def get_load_asset_code(server)
  sprockets = server.sprockets
  name = server.main
  asset = sprockets[name]
  raise "Cannot find asset: #{name}" if asset.nil?
  Opal::Sprockets.load_asset name, sprockets
end

#launch_node(server) ⇒ Object

TODO: Avoid the Rack server and compile directly



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# File 'lib/opal/rspec/rake_task.rb', line 43

def launch_node(server)
  compiled = Tempfile.new 'opal_rspec.js'
  begin
    require 'net/http'
    uri = URI(URL)
    Net::HTTP.start uri.hostname, uri.port do |http|
      resp = http.get File.join('/assets', server.main)
      compiled.write resp.body
      load_asset_code = get_load_asset_code server
      compiled.write load_asset_code
      compiled.close
    end
    command_line = "node #{compiled.path} 2>&1"
    puts "Running #{command_line}"
    system command_line
    exit 1 unless $?.success?
  ensure
    compiled.close unless compiled.closed?
    compiled.unlink
  end
end

#launch_phantom(timeout_value) ⇒ Object 



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# File 'lib/opal/rspec/rake_task.rb', line 21

def launch_phantom(timeout_value)
  command_line = %Q{phantomjs #{RUNNER} "#{URL}"#{timeout_value ? " #{timeout_value}" : ''}}
  puts "Running #{command_line}"
  system command_line
  success = $?.success?

  exit 1 unless success
end

#wait_for_server ⇒ Object 



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# File 'lib/opal/rspec/rake_task.rb', line 65

def wait_for_server
  # avoid retryable dependency
  tries = 0
  up = false
  uri = URI(URL)
  while tries < 4 && !up
    tries += 1
    sleep 0.1
    begin
      # Using TCPSocket, not net/http open because executing the HTTP GET / will incur a decent delay just to check if the server is up
      # in order to better communicate to the user what is going on, save the actual HTTP request for the phantom/node run
      # the only objective here is to see if the Rack server has started
      socket = TCPSocket.new uri.hostname, uri.port
      up = true
      socket.close
    rescue Errno::ECONNREFUSED
      # server not up yet
    end
  end
  raise 'Tried 4 times to contact Rack server and not up!' unless up
end