diff options
Diffstat (limited to 'tooling/lib/tooling/crystalball/coverage_lines_execution_detector.rb')
-rw-r--r-- | tooling/lib/tooling/crystalball/coverage_lines_execution_detector.rb | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/tooling/lib/tooling/crystalball/coverage_lines_execution_detector.rb b/tooling/lib/tooling/crystalball/coverage_lines_execution_detector.rb new file mode 100644 index 00000000000..47ddf568fe4 --- /dev/null +++ b/tooling/lib/tooling/crystalball/coverage_lines_execution_detector.rb @@ -0,0 +1,44 @@ +# frozen_string_literal: true + +require 'crystalball/map_generator/helpers/path_filter' + +module Tooling + module Crystalball + # Class for detecting code execution path based on coverage information diff + class CoverageLinesExecutionDetector + include ::Crystalball::MapGenerator::Helpers::PathFilter + + attr_reader :exclude_prefixes + + def initialize(*args, exclude_prefixes: []) + super(*args) + @exclude_prefixes = exclude_prefixes + end + + # Detects files affected during example execution based on line coverage. + # Transforms absolute paths to relative. + # Exclude paths outside of repository and in excluded prefixes + # + # @param[Hash] hash of files affected before example execution + # @param[Hash] hash of files affected after example execution + # @return [Array<String>] + def detect(before, after) + file_names = after.keys + covered_files = file_names.reject { |file_name| same_coverage?(before, after, file_name) } + filter(covered_files) + end + + private + + def same_coverage?(before, after, file_name) + before[file_name] && before[file_name][:lines] == after[file_name][:lines] + end + + def filter(paths) + super.reject do |file_name| + exclude_prefixes.any? { |prefix| file_name.start_with?(prefix) } + end + end + end + end +end |