Contents

require 'json'

module TestFileFinder
  module MappingStrategies
    class DirectMatching
      JSON_ERROR_MESSAGE = 'json file should contain a json object, with array of test files as the values'.freeze

      def self.load_json(json_file)
        map = JSON.parse(File.read(json_file))

        validate(map)

        new.tap do |strategy|
          strategy.map = map
        end
      end

      def self.validate(map)
        return if map.is_a?(Hash) && map.values.all? { |value| value.is_a?(Array) }

        raise InvalidMappingFileError, JSON_ERROR_MESSAGE
      end

      attr_accessor :map

      def match(files)
        Array(files).inject(Set.new) do |result, file|
          test_files = @map.fetch(file, [])
          result.merge(test_files)
        end.to_a
      end
    end
  end
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
test_file_finder-0.2.1	lib/test_file_finder/mapping_strategies/direct_matching.rb
test_file_finder-0.2.0	lib/test_file_finder/mapping_strategies/direct_matching.rb
test_file_finder-0.1.4	lib/test_file_finder/mapping_strategies/direct_matching.rb
test_file_finder-0.1.3	lib/test_file_finder/mapping_strategies/direct_matching.rb
test_file_finder-0.1.1	lib/test_file_finder/mapping_strategies/direct_matching.rb