Redmine

I encountered the following error while running bin/rake test:coverage with simplecov 0.16.1.

Traceback (most recent call last):
    10: from /Users/maeda/redmines/gems/ruby/2.6.0/gems/simplecov-0.16.1/lib/simplecov/defaults.rb:27:in `block in <top (required)>'
     9: from /Users/maeda/redmines/gems/ruby/2.6.0/gems/simplecov-0.16.1/lib/simplecov.rb:200:in `run_exit_tasks!'
     8: from /Users/maeda/redmines/gems/ruby/2.6.0/gems/simplecov-0.16.1/lib/simplecov/configuration.rb:182:in `block in at_exit'
     7: from /Users/maeda/redmines/gems/ruby/2.6.0/gems/simplecov-0.16.1/lib/simplecov/result.rb:48:in `format!'
     6: from /Users/maeda/redmines/redmine-trunk/test/coverage/html_formatter.rb:29:in `format'
     5: from /Users/maeda/redmines/redmine-trunk/test/coverage/html_formatter.rb:29:in `each'
     4: from /Users/maeda/redmines/redmine-trunk/test/coverage/html_formatter.rb:30:in `block in format'
     3: from /Users/maeda/redmines/redmine-trunk/test/coverage/html_formatter.rb:30:in `open'
     2: from /Users/maeda/redmines/redmine-trunk/test/coverage/html_formatter.rb:31:in `block (2 levels) in format'
     1: from /Users/maeda/redmines/redmine-trunk/test/coverage/html_formatter.rb:31:in `puts'
/Users/maeda/redmines/redmine-trunk/test/coverage/html_formatter.rb:31:in `write': "\xC5" from ASCII-8BIT to UTF-8 (Encoding::UndefinedConversionError)

The error described in #30963#note-1 occurs while processing app/models/repository/git.rb line 3 ('ŋ') or lib/redmine/search.rb line 63 ('汉').

The following change will fixes the error.

Index: Gemfile
===================================================================
--- Gemfile    (リビジョン 17927)
+++ Gemfile    (作業コピー)
@@ -79,7 +79,7 @@
 group :test do
   gem "rails-dom-testing" 
   gem "mocha" 
-  gem "simplecov", "~> 0.14.1", :require => false
+  gem "simplecov", "~> 0.16.1", :require => false
   # For running system tests
   gem 'puma', '~> 3.7'
   gem "capybara", '~> 2.13'
Index: test/coverage/html_formatter.rb
===================================================================
--- test/coverage/html_formatter.rb    (リビジョン 17927)
+++ test/coverage/html_formatter.rb    (作業コピー)
@@ -28,7 +28,7 @@
         end
         result.source_files.each do |source_file|
           File.open(File.join(output_path, source_file_result(source_file)), "w") do |file|
-            file.puts template('source').result(binding)
+            file.puts template('source').result(binding).force_encoding('utf-8')
           end
         end
       end