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#!ruby
require "pathname"
require "open3"
require "tmpdir"
def backup_gcda_files(gcda_files)
gcda_files = gcda_files.map do |gcda|
[gcda, gcda.sub_ext(".bak")]
end
begin
gcda_files.each do |before, after|
before.rename(after)
end
yield
ensure
gcda_files.each do |before, after|
after.rename(before)
end
end
end
def run_lcov(*args)
system("lcov", "--rc", "lcov_branch_coverage=1", *args)
end
$info_files = []
def run_lcov_capture(dir, info)
$info_files << info
run_lcov("--capture", "-d", dir, "-o", info)
end
def run_lcov_merge(files, info)
run_lcov(*files.flat_map {|f| ["--add-tracefile", f] }, "-o", info)
end
def run_lcov_remove(info_src, info_out)
dirs = %w(/usr/*)
dirs << File.join(Dir.tmpdir, "*")
%w(
test/*
ext/-test-/*
ext/nkf/nkf-utf8/nkf.c
).each {|f| dirs << File.join(File.dirname(__dir__), f) }
run_lcov("--remove", info_src, *dirs, "-o", info_out)
end
def run_genhtml(info, out)
system("genhtml", "--branch-coverage", "--ignore-errors", "source", info, "-o", out)
end
def gen_rb_lcov(file)
res = Marshal.load(File.binread(file))
open("lcov-rb-all.info", "w") do |f|
f.puts "TN:" # no test name
base_dir = File.dirname(__dir__)
res.each do |path, cov|
next unless path.start_with?(base_dir)
next if path.start_with?(File.join(base_dir, "test"))
f.puts "SF:#{ path }"
total = covered = 0
cov.each_with_index do |count, lineno|
next unless count
f.puts "DA:#{ lineno + 1 },#{ count }"
total += 1
covered += 1 if count > 0
end
f.puts "LF:#{ total }"
f.puts "LH:#{ covered }"
f.puts "end_of_record"
end
end
end
def gen_rb_lcov(file)
res = Marshal.load(File.binread(file))
open("lcov-rb-all.info", "w") do |f|
f.puts "TN:" # no test name
base_dir = File.dirname(File.dirname(__dir__))
res.each do |path, cov|
next unless path.start_with?(base_dir)
next if path.start_with?(File.join(base_dir, "test"))
f.puts "SF:#{ path }"
# function coverage
total = covered = 0
cov[:methods].each do |(klass, name, lineno), count|
f.puts "FN:#{ lineno },#{ klass }##{ name }"
total += 1
covered += 1 if count > 0
end
f.puts "FNF:#{ total }"
f.puts "FNF:#{ covered }"
cov[:methods].each do |(klass, name, _), count|
f.puts "FNDA:#{ count },#{ klass }##{ name }"
end
# line coverage
total = covered = 0
cov[:lines].each_with_index do |count, lineno|
next unless count
f.puts "DA:#{ lineno + 1 },#{ count }"
total += 1
covered += 1 if count > 0
end
f.puts "LF:#{ total }"
f.puts "LH:#{ covered }"
# branch coverage
total = covered = 0
id = 0
cov[:branches].each do |(_base_type, _, base_lineno), targets|
i = 0
targets.each do |(_target_type, _target_lineno), count|
f.puts "BRDA:#{ base_lineno },#{ id },#{ i },#{ count }"
total += 1
covered += 1 if count > 0
i += 1
end
id += 1
end
f.puts "BRF:#{ total }"
f.puts "BRH:#{ covered }"
f.puts "end_of_record"
end
end
end
gcda_files = Pathname.glob("**/*.gcda")
ext_gcda_files = gcda_files.select {|f| f.fnmatch("ext/*") }
rubyspec_temp_gcda_files = gcda_files.select {|f| f.fnmatch("rubyspec_temp/*") }
backup_gcda_files(rubyspec_temp_gcda_files) do
if ext_gcda_files != []
backup_gcda_files(ext_gcda_files) do
info = "lcov-root.info"
run_lcov_capture(".", info)
end
end
ext_gcda_files.group_by {|f| f.descend.to_a[1] }.each do |key, files|
info = "lcov-#{ key.to_s.gsub(File::Separator, "-") }.info"
run_lcov_capture(key.to_s, info)
end
end
if $info_files != []
run_lcov_merge($info_files, "lcov-c-all.info")
run_lcov_remove("lcov-c-all.info", "lcov-c-all-filtered.info")
run_genhtml("lcov-c-all-filtered.info", "lcov-c-out")
end
if File.readable?("test-coverage.dat")
gen_rb_lcov("test-coverage.dat")
run_lcov_remove("lcov-rb-all.info", "lcov-rb-all-filtered.info")
run_genhtml("lcov-rb-all-filtered.info", "lcov-rb-out")
end
if File.readable?("lcov-c-all.info") && File.readable?("lcov-rb-all.info")
run_lcov_merge(%w(lcov-c-all.info lcov-rb-all.info), "lcov-all.info")
run_lcov_remove("lcov-all.info", "lcov-all-filtered.info")
run_genhtml("lcov-all-filtered.info", "lcov-out")
end
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