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Versions: 14
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Contents
# frozen_string_literal: true
require 'tempfile'
module DeepCover
module Tools::BuiltinCoverage
def builtin_coverage(source, filename, lineno)
require 'coverage'
filename = File.absolute_path(File.expand_path(filename))
::Coverage.start
begin
Tools.silence_warnings do
execute_sample -> { filename = run_with_line_coverage(source, filename, lineno) }
end
ensure
result = ::Coverage.result
end
unshift_coverage(result.fetch(filename), lineno)
end
def run_with_line_coverage(source, filename = '<code>', lineno = 1)
source = shift_source(source, lineno)
f = Tempfile.new(['ruby', '.rb'])
f.write(source)
f.close
begin
require f.path
rescue StandardError => e
tempfile_matcher = Regexp.new("\\A#{Regexp.escape(f.path)}(?=:\\d)")
e.backtrace.each { |l| l.sub!(tempfile_matcher, filename) }
raise
end
$LOADED_FEATURES.delete(f.path)
f.path
end
private
def shift_source(source, lineno)
"\n" * (lineno - 1) + source
end
def unshift_coverage(coverage, lineno)
coverage[(lineno - 1)..-1]
end
end
end
Version data entries
14 entries across 14 versions & 1 rubygems