module SimpleCov

# File lib/simplecov.rb, line 174
def at_exit_behavior
  # If we are in a different process than called start, don't interfere.
  return if SimpleCov.pid != Process.pid

  # If SimpleCov is no longer running then don't run exit tasks
  SimpleCov.run_exit_tasks! if SimpleCov.running
end

# File lib/simplecov.rb, line 170
def clear_result
  @result = nil
end

# File lib/simplecov.rb, line 86
def collate(result_filenames, profile = nil, ignore_timeout: true, &block)
  raise "There are no reports to be merged" if result_filenames.empty?

  initial_setup(profile, &block)

  # Use the ResultMerger to produce a single, merged result, ready to use.
  @result = ResultMerger.merge_and_store(*result_filenames, ignore_timeout: ignore_timeout)

  run_exit_tasks!
end

# File lib/simplecov.rb, line 223
def exit_and_report_previous_error(exit_status)
  warn("Stopped processing SimpleCov as a previous error not related to SimpleCov has been detected") if print_error_status
  Kernel.exit(exit_status)
end

# File lib/simplecov.rb, line 200
def exit_status_from_exception
  # Capture the current exception if it exists
  @exit_exception = $ERROR_INFO
  return nil unless @exit_exception

  if @exit_exception.is_a?(SystemExit)
    @exit_exception.status
  else
    SimpleCov::ExitCodes::EXCEPTION
  end
end

# File lib/simplecov.rb, line 131
def filtered(files)
  result = files.clone
  filters.each do |filter|
    result = result.reject { |source_file| filter.matches?(source_file) }
  end
  SimpleCov::FileList.new result
end

# File lib/simplecov.rb, line 268
def final_result_process?
  # checking for ENV["TEST_ENV_NUMBER"] to determine if the tests are being run in parallel
  !defined?(ParallelTests) || !ENV["TEST_ENV_NUMBER"] || ParallelTests.last_process?
end

# File lib/simplecov.rb, line 142
def grouped(files)
  grouped = {}
  grouped_files = []
  groups.each do |name, filter|
    grouped[name] = SimpleCov::FileList.new(files.select { |source_file| filter.matches?(source_file) })
    grouped_files += grouped[name]
  end
  if !groups.empty? && !(other_files = files.reject { |source_file| grouped_files.include?(source_file) }).empty?
    grouped["Ungrouped"] = SimpleCov::FileList.new(other_files)
  end
  grouped
end

# File lib/simplecov.rb, line 162
def load_adapter(name)
  warn "#{Kernel.caller.first}: [DEPRECATION] #load_adapter is deprecated. Use #load_profile instead."
  load_profile(name)
end

# File lib/simplecov.rb, line 158
def load_profile(name)
  profiles.load(name)
end

# File lib/simplecov.rb, line 213
def previous_error?(error_exit_status)
  # Normally it'd be enough to check for previous error but when running test_unit
  # status is 0
  error_exit_status && error_exit_status != SimpleCov::ExitCodes::SUCCESS
end

# File lib/simplecov.rb, line 248
def process_result(result)
  result_exit_status = result_exit_status(result)
  write_last_run(result) if result_exit_status == SimpleCov::ExitCodes::SUCCESS
  result_exit_status
end

# File lib/simplecov.rb, line 233
def process_results_and_report_error
  exit_status = process_result(result)

  # Force exit with stored status (see github issue #5)
  if exit_status.positive?
    warn("SimpleCov failed with exit #{exit_status} due to a coverage related error") if print_error_status
    Kernel.exit exit_status
  end
end

# File lib/simplecov.rb, line 229
def ready_to_process_results?
  final_result_process? && result?
end

# File lib/simplecov.rb, line 101
def result
  return @result if result?

  # Collect our coverage result
  process_coverage_result if running

  # If we're using merging of results, store the current result
  # first (if there is one), then merge the results and return those
  if use_merging
    wait_for_other_processes
    SimpleCov::ResultMerger.store_result(@result) if result?
    @result = SimpleCov::ResultMerger.merged_result
  end

  @result
ensure
  self.running = false
end

# File lib/simplecov.rb, line 124
def result?
  defined?(@result) && @result
end

# File lib/simplecov.rb, line 256
def result_exit_status(result)
  coverage_limits = CoverageLimits.new(
    minimum_coverage: minimum_coverage, minimum_coverage_by_file: minimum_coverage_by_file,
    maximum_coverage_drop: maximum_coverage_drop
  )

  ExitCodes::ExitCodeHandling.call(result, coverage_limits: coverage_limits)
end

# File lib/simplecov.rb, line 296
def round_coverage(coverage)
  coverage.floor(2)
end

# File lib/simplecov.rb, line 186
def run_exit_tasks!
  error_exit_status = exit_status_from_exception

  at_exit.call

  exit_and_report_previous_error(error_exit_status) if previous_error?(error_exit_status)
  process_results_and_report_error if ready_to_process_results?
end

# File lib/simplecov.rb, line 48
def start(profile = nil, &block)
  require "coverage"
  initial_setup(profile, &block)
  require_relative "./simplecov/process" if SimpleCov.enabled_for_subprocesses? &&
                                            ::Process.respond_to?(:fork)

  make_parallel_tests_available

  @result = nil
  self.pid = Process.pid

  start_coverage_measurement
end

# File lib/simplecov.rb, line 276
def wait_for_other_processes
  return unless defined?(ParallelTests) && final_result_process?

  ParallelTests.wait_for_other_processes_to_finish
end

# File lib/simplecov.rb, line 285
def write_last_run(result)
  SimpleCov::LastRun.write(result:
    result.coverage_statistics.transform_values do |stats|
      round_coverage(stats.percent)
    end)
end