Update to ruby/mspec@4b980493

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58716 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

3 files changed, 218 insertions, 0 deletions

diff --git a/spec/mspec/tool/sync/.gitignore b/spec/mspec/tool/sync/.gitignore
new file mode 100644
index 0000000000..e64f1e8542
--- /dev/null
+++ b/spec/mspec/tool/sync/.gitignore
@@ -0,0 +1,4 @@
+/jruby
+/rubinius
+/ruby
+/truffleruby
diff --git a/spec/mspec/tool/sync/sync-rubyspec.rb b/spec/mspec/tool/sync/sync-rubyspec.rb
new file mode 100644
index 0000000000..fe8c4edbb6
--- /dev/null
+++ b/spec/mspec/tool/sync/sync-rubyspec.rb
@@ -0,0 +1,210 @@
+IMPLS = {
+  truffleruby: {
+    git: "https://github.com/graalvm/truffleruby.git",
+    from_commit: "f10ab6988d",
+  },
+  jruby: {
+    git: "https://github.com/jruby/jruby.git",
+    from_commit: "f10ab6988d",
+  },
+  rbx: {
+    git: "https://github.com/rubinius/rubinius.git",
+  },
+  mri: {
+    git: "https://github.com/ruby/ruby.git",
+    master: "trunk",
+    prefix: "spec/rubyspec",
+  },
+}
+
+# Assuming the rubyspec repo is a sibling of the mspec repo
+RUBYSPEC_REPO = File.expand_path("../../../../rubyspec", __FILE__)
+raise RUBYSPEC_REPO unless Dir.exist?(RUBYSPEC_REPO)
+
+NOW = Time.now
+
+class RubyImplementation
+  attr_reader :name
+
+  def initialize(name, data)
+    @name = name.to_s
+    @data = data
+  end
+
+  def git_url
+    @data[:git]
+  end
+
+  def default_branch
+    @data[:master] || "master"
+  end
+
+  def repo_name
+    File.basename(git_url, ".git")
+  end
+
+  def repo_org
+    File.basename(File.dirname(git_url))
+  end
+
+  def from_commit
+    from = @data[:from_commit]
+    "#{from}..." if from
+  end
+
+  def prefix
+    @data[:prefix] || "spec/ruby"
+  end
+
+  def rebased_branch
+    "#{@name}-rebased"
+  end
+end
+
+def sh(*args)
+  puts args.join(' ')
+  system(*args)
+  raise unless $?.success?
+end
+
+def branch?(name)
+  branches = `git branch`.sub('*', '').lines.map(&:strip)
+  branches.include?(name)
+end
+
+def update_repo(impl)
+  unless File.directory? impl.repo_name
+    sh "git", "clone", impl.git_url
+  end
+
+  Dir.chdir(impl.repo_name) do
+    puts Dir.pwd
+
+    sh "git", "checkout", impl.default_branch
+    sh "git", "pull"
+  end
+end
+
+def filter_commits(impl)
+  Dir.chdir(impl.repo_name) do
+    date = NOW.strftime("%F")
+    branch = "specs-#{date}"
+
+    unless branch?(branch)
+      sh "git", "checkout", "-b", branch
+      sh "git", "filter-branch", "-f", "--subdirectory-filter", impl.prefix, *impl.from_commit
+      sh "git", "push", "-f", RUBYSPEC_REPO, "#{branch}:#{impl.name}"
+    end
+  end
+end
+
+def rebase_commits(impl)
+  Dir.chdir(RUBYSPEC_REPO) do
+    sh "git", "checkout", "master"
+    sh "git", "pull"
+
+    rebased = impl.rebased_branch
+    if branch?(rebased)
+      puts "#{rebased} already exists, assuming it correct"
+      sh "git", "checkout", rebased
+    else
+      sh "git", "checkout", impl.name
+
+      if ENV["LAST_MERGE"]
+        last_merge = `git log -n 1 --format='%H %ct' #{ENV["LAST_MERGE"]}`
+      else
+        last_merge = `git log --grep='Merge ruby/spec commit' -n 1 --format='%H %ct'`
+      end
+      last_merge, commit_timestamp = last_merge.chomp.split(' ')
+
+      raise "Could not find last merge" unless last_merge
+      puts "Last merge is #{last_merge}"
+
+      commit_date = Time.at(Integer(commit_timestamp))
+      days_since_last_merge = (NOW-commit_date) / 86400
+      if days_since_last_merge > 60
+        raise "#{days_since_last_merge} since last merge, probably wrong commit"
+      end
+
+      puts "Rebasing..."
+      sh "git", "branch", "-D", rebased if branch?(rebased)
+      sh "git", "checkout", "-b", rebased, impl.name
+      sh "git", "rebase", "--onto", "master", last_merge
+    end
+  end
+end
+
+def test_new_specs
+  require "yaml"
+  Dir.chdir(RUBYSPEC_REPO) do
+    versions = YAML.load_file(".travis.yml")
+    versions = versions["matrix"]["include"].map { |job| job["rvm"] }
+    versions.delete "ruby-head"
+    min_version, max_version = versions.minmax
+
+    run_rubyspec = -> version {
+      command = "chruby #{version} && ../mspec/bin/mspec -j"
+      sh ENV["SHELL"], "-c", command
+    }
+    run_rubyspec[min_version]
+    run_rubyspec[max_version]
+    run_rubyspec["trunk"]
+  end
+end
+
+def verify_commits(impl)
+  puts
+  Dir.chdir(RUBYSPEC_REPO) do
+    history = `git log master...`
+    history.lines.slice_before(/^commit \h{40}$/).each do |commit, *message|
+      commit = commit.chomp.split.last
+      message = message.join
+      if /\W(#\d+)/ === message
+        puts "Commit #{commit} contains an unqualified issue number: #{$1}"
+        puts "Replace it with #{impl.repo_org}/#{impl.repo_name}#{$1}"
+        sh "git", "rebase", "-i", "#{commit}^"
+      end
+    end
+
+    puts "Manually check commit messages:"
+    sh "git", "log", "master..."
+  end
+end
+
+def fast_forward_master(impl)
+  Dir.chdir(RUBYSPEC_REPO) do
+    sh "git", "checkout", "master"
+    sh "git", "merge", "--ff-only", "#{impl.name}-rebased"
+  end
+end
+
+def check_ci
+  puts
+  puts <<-EOS
+  Push to master, and check that the CI passes:
+    https://github.com/ruby/spec/commits/master
+  EOS
+end
+
+def main(impls)
+  impls.each_pair do |impl, data|
+    impl = RubyImplementation.new(impl, data)
+    update_repo(impl)
+    filter_commits(impl)
+    rebase_commits(impl)
+    test_new_specs
+    verify_commits(impl)
+    fast_forward_master(impl)
+    check_ci
+  end
+end
+
+if ARGV == ["all"]
+  impls = IMPLS
+else
+  args = ARGV.map { |arg| arg.to_sym }
+  raise ARGV.to_s unless (args - IMPLS.keys).empty?
+  impls = IMPLS.select { |impl| args.include?(impl) }
+end
+
+main(impls)
diff --git a/spec/mspec/tool/sync/sync.yml b/spec/mspec/tool/sync/sync.yml
new file mode 100644
index 0000000000..c0e1690bf4
--- /dev/null
+++ b/spec/mspec/tool/sync/sync.yml
@@ -0,0 +1,4 @@
+mri: 4e95b8c265d4d365477a05fe6701186415576303
+truffleruby: c8fb3e592bf354cd67893555c671955cc54c32ff
+jruby: d834e4279090998ba3ef087d81278734cab4c50a
+rbx: 7799d9fa48467cdbfceeed6765a63366d9dc8b0e