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# frozen_string_literal: true
module SimpleCov
# An array of SimpleCov SourceFile instances with additional collection helper
# methods for calculating coverage across them etc.
class FileList
include Enumerable
extend Forwardable
def_delegators :@files,
# For Enumerable
:each,
# also delegating methods implemented in Enumerable as they have
# custom Array implementations which are presumably better/more
# resource efficient
:size, :map, :count,
# surprisingly not in Enumerable
:empty?, :length,
# still act like we're kinda an array
:to_a, :to_ary
def initialize(files)
@files = files
end
def coverage_statistics
@coverage_statistics ||= compute_coverage_statistics
end
def coverage_statistics_by_file
@coverage_statistics_by_file ||= compute_coverage_statistics_by_file
end
# Returns the count of lines that have coverage
def covered_lines
coverage_statistics[:line]&.covered
end
# Returns the count of lines that have been missed
def missed_lines
coverage_statistics[:line]&.missed
end
# Returns the count of lines that are not relevant for coverage
def never_lines
return 0.0 if empty?
map { |f| f.never_lines.count }.inject(:+)
end
# Returns the count of skipped lines
def skipped_lines
return 0.0 if empty?
map { |f| f.skipped_lines.count }.inject(:+)
end
# Computes the coverage based upon lines covered and lines missed for each file
# Returns an array with all coverage percentages
def covered_percentages
map(&:covered_percent)
end
# Finds the least covered file and returns that file's name
def least_covered_file
min_by(&:covered_percent).filename
end
# Returns the overall amount of relevant lines of code across all files in this list
def lines_of_code
coverage_statistics[:line]&.total
end
# Computes the coverage based upon lines covered and lines missed
# @return [Float]
def covered_percent
coverage_statistics[:line]&.percent
end
# Computes the strength (hits / line) based upon lines covered and lines missed
# @return [Float]
def covered_strength
coverage_statistics[:line]&.strength
end
# Return total count of branches in all files
def total_branches
coverage_statistics[:branch]&.total
end
# Return total count of covered branches
def covered_branches
coverage_statistics[:branch]&.covered
end
# Return total count of covered branches
def missed_branches
coverage_statistics[:branch]&.missed
end
def branch_covered_percent
coverage_statistics[:branch]&.percent
end
private
def compute_coverage_statistics_by_file
@files.each_with_object(line: [], branch: []) do |file, together|
together[:line] << file.coverage_statistics.fetch(:line)
together[:branch] << file.coverage_statistics.fetch(:branch) if SimpleCov.branch_coverage?
end
end
def compute_coverage_statistics
coverage_statistics = {line: CoverageStatistics.from(coverage_statistics_by_file[:line])}
coverage_statistics[:branch] = CoverageStatistics.from(coverage_statistics_by_file[:branch]) if SimpleCov.branch_coverage?
coverage_statistics
end
end
end
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