Module: AffectedTests::MapMerger

Defined in:
lib/affected_tests/map_merger.rb

Class Method Summary collapse

Class Method Details

.run(map_file_paths:, output_path:) ⇒ Object



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# File 'lib/affected_tests/map_merger.rb', line 10

def run(map_file_paths:, output_path:)
  map_infos = map_file_paths.map do |map_file_path|
    JSON.parse(File.read(map_file_path))
  end

  revisions = map_infos.map { |map_info| map_info["revision"] }.uniq
  raise "map files weren't generated by same revision" if revisions.size != 1

  keys = map_infos.flat_map { |map_info| map_info["map"].keys }.uniq

  result_map = {}
  keys.each do |key|
    map_infos.each do |map_info|
      map = map_info["map"]
      next if map[key].nil?

      result_map[key] ||= Set.new
      map[key].each do |test_file_path|
        result_map[key] << test_file_path
      end
    end
  end

  result = {
    revision: revisions.first,
    map: result_map.transform_values(&:to_a)
  }

  File.write(output_path, JSON.dump(result))
end