Module: ParallelRSpec::SimpleCov

Defined in:
lib/parallel_rspec_simplecov.rb,
lib/parallel_rspec_simplecov/version.rb,
lib/parallel_rspec_simplecov/simplecov.rb

Constant Summary collapse

VERSION = 
"0.3.0"

Class Method Summary collapse

Class Method Details

.collate! ⇒ Object 



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# File 'lib/parallel_rspec_simplecov/simplecov.rb', line 55

def self.collate!
  base_dir = @simplecov_base_dir || ::SimpleCov.coverage_dir

  # Force the server process's resultset to disk before we glob. SimpleCov's
  # own at_exit handler will harmlessly re-dump it after collation finishes.
  ::SimpleCov.result.format!

  pattern = File.join(base_dir, "rspec_*", ".resultset.json")
  resultsets = Dir.glob(pattern)

  if resultsets.empty?
    warn "[parallel_rspec] no SimpleCov resultsets found under #{pattern}; skipping collation"
    return
  end

  collate_formatter =
    case (@simplecov_formatters || []).length
    when 0 then nil
    when 1 then @simplecov_formatters.first
    else ::SimpleCov::Formatter::MultiFormatter.new(@simplecov_formatters)
    end

  puts "Collating #{resultsets.size} SimpleCov resultset(s)..."

  ::SimpleCov.collate(resultsets) do
    coverage_dir base_dir
    formatter collate_formatter if collate_formatter
  end
rescue => e
  warn "[parallel_rspec] simplecov collation failed: #{e.class}: #{e.message}"
end

.simplecov_enabled? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/parallel_rspec_simplecov/simplecov.rb', line 10

def self.simplecov_enabled?
  @simplecov_enabled
end

.start(profile = nil, formatters: nil, &block) ⇒ Object 



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# File 'lib/parallel_rspec_simplecov/simplecov.rb', line 14

def self.start(profile = nil, formatters: nil, &block)
  puts "SimpleCov.start"
  ::SimpleCov.enable_for_subprocesses true

  base_dir = ::SimpleCov.coverage_dir

  force_worker_settings = lambda do
    # Prevent forked processes races generating the HTML report; each
    # process just dumps a .resultset.json that the runner collates into
    # the user's chosen formatter(s) at the end of the run.
    ::SimpleCov.print_error_status = false
    ::SimpleCov.formatter ::SimpleCov::Formatter::SimpleFormatter
    ::SimpleCov.minimum_coverage 0
  end

  start_simplecov = lambda do |command_name, dir|
    ::SimpleCov.command_name command_name
    ::SimpleCov.coverage_dir dir
    ::SimpleCov.start(profile, &block)
  end

  ParallelRSpec::Config.after_fork do |worker_number|
    force_worker_settings.call
    start_simplecov.call(
      "RSpec Worker #{worker_number}",
      File.join(base_dir, "rspec_#{worker_number}"),
    )
  end

  RSpec.configuration.after(:suite) do
    ParallelRSpec::SimpleCov.collate!
  end

  force_worker_settings.call
  start_simplecov.call("RSpec Server", File.join(base_dir, "rspec_server"))

  @simplecov_base_dir = base_dir
  @simplecov_formatters = formatters
  @simplecov_enabled = true
end