test_commit_email.rb: Test the content of an email

Author: k0kubun

tool/test/test_commit_email.rb

@@ -11,34 +11,64 @@ def setup
       git('init', '--initial-branch=master')
       git('config', 'user.name', 'Jóhän Grübél')
       git('config', 'user.email', 'johan@example.com')
-      git('commit', '--allow-empty', '-m', 'New repository initialized by cvs2svn.')
-      git('commit', '--allow-empty', '-m', 'Initial revision')
-      git('commit', '--allow-empty', '-m', 'version 1.0.0')
+      env = { 'GIT_AUTHOR_DATE' => '2025-10-08T12:00:00Z' }
+      git('commit', '--allow-empty', '-m', 'New repository initialized by cvs2svn.', env:)
+      git('commit', '--allow-empty', '-m', 'Initial revision', env:)
+      git('commit', '--allow-empty', '-m', 'version 1.0.0', env:)
     end
 
     @sendmail = File.join(Dir.mktmpdir, 'sendmail')
     File.write(@sendmail, <<~SENDMAIL)
       #!/usr/bin/env ruby
-      p ARGV
+      puts "---"
       puts STDIN.read
     SENDMAIL
     FileUtils.chmod(0755, @sendmail)
 
     @commit_email = File.expand_path('../../tool/commit-email.rb', __dir__)
   end
 
-  # Just testing an exit status :p
-  # TODO: prepare something in test/fixtures/xxx and test output
-  def test_successful_run
+  def test_sendmail_encoding
     Dir.chdir(@ruby) do
+      before_rev = git('rev-parse', 'HEAD^').chomp
+      long_rev = git('rev-parse', 'HEAD').chomp
+      short_rev = long_rev[0...10]
+
+      env = {
+        'SENDMAIL' => @sendmail,
+      }.merge!(gem_env)
       out, _, status = EnvUtil.invoke_ruby([
         { 'SENDMAIL' => @sendmail }.merge!(gem_env),
         @commit_email, './', 'cvs-admin@ruby-lang.org',
-        git('rev-parse', 'HEAD^').chomp, git('rev-parse', 'HEAD').chomp, 'refs/heads/master',
+        before_rev, long_rev, 'refs/heads/master',
         '--viewer-uri', 'https://github.com/ruby/ruby/commit/',
         '--error-to', 'cvs-admin@ruby-lang.org',
       ], '', true)
-      assert_true(status.success?, out)
+
+      assert_true(status.success?)
+      assert_equal(out, <<~EOS)
+        master: #{short_rev} (Jóhän Grübél)
+        ---
+        X-SVN-Author: =?UTF-8?B?SsOzaMOkbiBHcsO8YsOpbA==?=
+        X-SVN-Repository: XXX
+        X-SVN-Revision: #{short_rev}
+        X-SVN-Commit-Id: #{long_rev}
+        Mime-Version: 1.0
+        Content-Type: text/plain; charset=utf-8
+        Content-Transfer-Encoding: quoted-printable
+        From: =?UTF-8?B?SsOzaMOkbiBHcsO8YsOpbA==?= <noreply@ruby-lang.org>
+        To: cvs-admin@ruby-lang.org
+        Subject: #{short_rev} (master): version 1.0.0
+        J=C3=B3h=C3=A4n Gr=C3=BCb=C3=A9l\t2025-10-08 05:00:00 -0700 (Wed, 08 Oct 2=
+        025)
+
+          New Revision: #{short_rev}
+
+          https://github.com/ruby/ruby/commit/#{short_rev}
+
+          Log:
+            version 1.0.0=
+      EOS
     end
   end
 
@@ -50,8 +80,8 @@ def gem_env
     { 'GEM_PATH' => ENV['BUNDLED_GEM_PATH'], 'GEM_HOME' => ENV['BUNDLED_GEM_HOME'] }
   end
 
-  def git(*cmd)
-    out, status = Open3.capture2('git', *cmd)
+  def git(*cmd, env: {})
+    out, status = Open3.capture2(env, 'git', *cmd)
     unless status.success?
       raise "git #{cmd.shelljoin}\n#{out}"
     end