Parallel rspec w/ re-run of failing specs.

.rspec_parallel

--colour
--format ParallelTests::RSpec::SummaryLogger
--format ParallelTests::RSpec::RuntimeLogger --out tmp/parallel_runtime_rspec.log
--format ParallelTests::RSpec::FailuresLogger --out tmp/rspec_failures.log

parallel_rspec.rb

#!/usr/bin/env ruby

# tmp/rspec_failures.log looks like:
#Pending:
# Billing attempt_payment with a successful payment response should send a successful payment email
#    # ./spec/models/billing_spec.rb:130
#
# Failed examples:
# rspec ./spec/models/taxon_spec.rb:23 # Taxon.has_option_type should only return taxon that have the asked for option type
# rspec ./spec/models/taxon_spec.rb:91 # Taxon tree prevent infinite loop should not be valid if taxon's parent is its grand child
# Failed examples:
# rspec ./spec/models/cart_spec.rb:14 # Cart empty? can add a variant
# Pending:
#  Billing becoming paid ecommerce_setup should mark the retailer as ecommerce-enabled
#    # Not yet implemented
#    # ./spec/models/billing_spec.rb:252

rspec_args = ARGV.any? ? ARGV.join(' ') : 'spec'
system "parallel_rspec #{rspec_args}"
if $?.exitstatus != 0
  # failed, rerun failed examples sequentially
  failures = File.read(File.expand_path("../../tmp/rspec_failures.log", __FILE__))
  failures = failures.split("\n")
  failures = failures.map do |line|
    line =~ %r{rspec (\./spec[\w/._:\d]+)} ? $1 : nil
  end
  failures.compact!
  if failures.empty?
    puts "parallel_rspec failed, but no failures recorded in tmp/rspec_failures.log!"
    exit 1
  end
  command = "rspec #{failures.join(' ')}"
  puts "$ #{command.inspect}" # Use inspect here to expose any colour codes from the log
  system command
  exit $?.exitstatus
end