(PUP-3912) Update parallel:spec task for rspec 3

tasks/parallel.rake

@@ -158,8 +158,6 @@ else
       # Responsible for parallelizing spec testing.
       #
       class Parallelizer
-        include ::RSpec::Core::Formatters::Helpers
-
         # Number of processes to use
         attr_reader :process_count
         # Approximate size of each group of tests
@@ -341,7 +339,7 @@ else
           end
 
           # Print out the run time
-          puts "\nFinished in #{format_duration(Time.now - @start_time)}"
+          puts "\nFinished in #{::RSpec::Core::Formatters::Helpers.format_duration(Time.now - @start_time)}"
 
           # Count all of the examples
           examples = 0
@@ -373,8 +371,8 @@ else
         end
 
         def summary_count_line(examples, failures, pending)
-          summary = pluralize(examples, "example")
-          summary << ", " << pluralize(failures, "failure")
+          summary = ::RSpec::Core::Formatters::Helpers.pluralize(examples, "example")
+          summary << ", " << ::RSpec::Core::Formatters::Helpers.pluralize(failures, "failure")
           summary << ", #{pending} pending" if pending > 0
           summary
         end
@@ -389,7 +387,6 @@ else
       config.error_stream = $stderr
       config.output_stream = $stdout
       options = ::RSpec::Core::ConfigurationOptions.new []
-      options.parse_options
       options.configure config
       config.color
     end

util/rspec_grouper

@@ -19,7 +19,6 @@ module Parallel
       def initialize(group_size)
         config = ::RSpec::Core::Configuration.new
         options = ::RSpec::Core::ConfigurationOptions.new((ENV['TEST'] || ENV['TESTS'] || 'spec').split(';'))
-        options.parse_options
         options.configure config
 
         # This will scan and load all spec examples

util/rspec_runner

@@ -2,7 +2,7 @@
 require 'rubygems'
 require 'rspec'
 require 'rspec/core/formatters/progress_formatter'
-require 'rspec/core/command_line'
+require 'rspec/core/runner'
 
 # Disable ruby verbosity
 # We need control over output so that the parallel task can parse it correctly
@@ -15,6 +15,7 @@ module Parallel
     # This differs from the built-in progress formatter by not appending an index to failures.
     #
     class Formatter < ::RSpec::Core::Formatters::ProgressFormatter
+      ::RSpec::Core::Formatters.register self, :dump_failure
       def dump_failure(example, _)
         # Unlike the super class implementation, do not print the failure number
         output.puts "#{short_padding}#{example.full_description}"
@@ -34,7 +35,8 @@ module Parallel
       end
 
       def run
-        ::RSpec::Core::CommandLine.new(@options).run($stderr, $stdout)
+        @options = ::RSpec::Core::ConfigurationOptions.new(@options)
+        ::RSpec::Core::Runner.new(@options).run($stderr, $stdout)
       end
     end
   end
@@ -50,4 +52,4 @@ if __FILE__ == $0
   else
     exit Parallel::RSpec::Runner.new(ARGV[0]).run
   end
-end
+end