Custom Rake task unable to be called twice in same Rakefile unike Rake::TestTask

I recently read an "older", 2009, article about how to make a Custom Rake tasks. So far it works for the first iteration, but I saw that Rake::TestTask can be called twice, so I figured I could do it, however my name attr_accessor is not picking up the symbol I'm passing to it.

require 'rake'
require 'rake/tasklib'

module Phil
  class FooTask < Rake::TaskLib
    attr_accessor :name
    attr_accessor :data
    attr_accessor :task_dependencies

    def initialize(name = :task, task_dependencies)
      @name = name
      @data = nil
      yield self if block_given?
      @task_dependencies = task_dependencies
      define
    end

    def define
      desc "Run the #{@name} task"
      task @name => @task_dependencies do
        puts 'Some Test being Printed'
        puts @data
        sh 'echo blah'
      end
      self
    end
  end
end

Phil::FooTask.new :foo, [:call_me_first, :call_me_second]

task :call_me_first do
  puts 'I am called first because I am a dependency'
end

task :call_me_second do
  puts 'I am called second because Im also a dependency'
end

Phil::FooTask.new(:stuff) do |t|
  t.data = 'I am a stuff task.'
end

The following is the results I get.

C:\Users\user01\Desktop
λ rake --tasks
rake foo    # Run the foo task
rake stuff  # Run the stuff task

C:\Users\user01\Desktop
λ rake foo
I am called first because I am a dependency
I am called second because Im also a dependency
Some Test being Printed

echo blah
blah

C:\Users\user01\Desktop
λ rake stuff --trace
** Invoke stuff (first_time)
rake aborted!
Don't know how to build task '{}' (see --tasks)
C:/tools/ruby23/lib/ruby/gems/2.3.0/gems/rake-12.0.0/lib/rake/task_manager.rb:58:in `[]'
C:/tools/ruby23/lib/ruby/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:61:in `lookup_prerequisite'
C:/tools/ruby23/lib/ruby/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:57:in `block in prerequisite_tasks'
C:/tools/ruby23/lib/ruby/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:57:in `map'
C:/tools/ruby23/lib/ruby/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:57:in `prerequisite_tasks'
C:/tools/ruby23/lib/ruby/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:214:in `invoke_prerequisites'
C:/tools/ruby23/lib/ruby/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:193:in `block in invoke_with_call_chain'
C:/tools/ruby23/lib/ruby/2.3.0/monitor.rb:214:in `mon_synchronize'
C:/tools/ruby23/lib/ruby/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:187:in `invoke_with_call_chain'
C:/tools/ruby23/lib/ruby/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:180:in `invoke'
C:/tools/ruby23/lib/ruby/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:152:in `invoke_task'
C:/tools/ruby23/lib/ruby/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:108:in `block (2 levels) in top_level'
C:/tools/ruby23/lib/ruby/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:108:in `each'
C:/tools/ruby23/lib/ruby/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:108:in `block in top_level'
C:/tools/ruby23/lib/ruby/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:117:in `run_with_threads'
C:/tools/ruby23/lib/ruby/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:102:in `top_level'
C:/tools/ruby23/lib/ruby/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:80:in `block in run'
C:/tools/ruby23/lib/ruby/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:178:in `standard_exception_handling'
C:/tools/ruby23/lib/ruby/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:77:in `run'
C:/tools/ruby23/lib/ruby/gems/2.3.0/gems/rake-12.0.0/exe/rake:27:in `<top (required)>'
C:/tools/ruby23/bin/rake:22:in `load'
C:/tools/ruby23/bin/rake:22:in `<main>'
Tasks: TOP => stuff

I'm not sure why the Rake task is failing. Even from reading the Rake's TestTask code, it seems I'm doing mostly everything correctly. I'll also say that I'm not a professional on Ruby and all the little tricks.

Solution

Keep arguments with default value at the end in method declaration!

The reason rake stuff is raising error is because of your Phil::FooTask.new(:stuff) do |t| call. Your initialize method expects two arguments. The error is in your declaration of the constructor where you've declared name = :task which has a default value of :task. However, the second parameter task_dependencies is expected. It is the second parameter that you're missing when initializing task with name :stuff.

Modify your initialize method declaration as follows:

def initialize(name = :task, task_dependencies = [])

Then you should see correct tasks when invoking rake -T:

rake foo    # Run the foo task
rake stuff  # Run the stuff task