From: Xavier Shay Date: 2011-05-29T14:37:42+09:00 Subject: [ruby-core:36542] [Ruby 1.9 - Feature #4796] Coverage should be restartable Issue #4796 has been updated by Xavier Shay. > You are talking about second (or later) calls to Coverage.start, right? Yes, that would be fine. > I cannot understand why the feature is needed for this use case. > Could you elaborate this? It's not required, it just would of made my life easier. I was trying to integrate with the `parallel` and `SimpleCov` gems, and ended up with a work around which involves conditionally hooking at_exit and a file lock, which is a bit of a mess. > Here is a patch. I will try it out and report back. Thanks! ---------------------------------------- Feature #4796: Coverage should be restartable http://redmine.ruby-lang.org/issues/4796 Author: Xavier Shay Status: Assigned Priority: Normal Assignee: Yusuke Endoh Category: lib Target version: 1.9.3 I would like a way to be able to make the following test past: require "test/unit" require "coverage" require 'tmpdir' class TestCoverage < Test::Unit::TestCase def test_restarting_coverage Dir.mktmpdir {|tmp| Dir.chdir(tmp) { File.open("test.rb", "w") do |f| f.puts <<-EOS def coverage_test_method puts :ok end EOS end Coverage.start require tmp + '/test.rb' Coverage.result Coverage.start coverage_test_method assert_equal 1, Coverage.result.size } } end end The problem is that `Coverage.start` doesn't track any files loaded before it is called. This is probably desired behaviour so that stdlib files are not tracked, but it limits the usefulness of Coverage. Specifically, I am trying to collate coverage reports from workers in multiple processes. Also I want to associate coverages with specific tests (this test executed this code, etc...). This is very difficult without being able to restart. What would be involved in doing this? If you point me in the right direction I can perhaps have a go. -- http://redmine.ruby-lang.org