1 files changed, 56 insertions, 0 deletions
diff --git a/spec/bundler/support/sometimes.rb b/spec/bundler/support/sometimes.rb
new file mode 100644
index 0000000000..6a50f5ff4c
--- /dev/null
+++ b/spec/bundler/support/sometimes.rb
@@ -0,0 +1,56 @@
+# frozen_string_literal: true
+module Sometimes
+  def run_with_retries(example_to_run, retries)
+    example = RSpec.current_example
+    example.metadata[:retries] ||= retries
+
+    retries.times do |t|
+      example.metadata[:retried] = t + 1
+      example.instance_variable_set(:@exception, nil)
+      example_to_run.run
+      break unless example.exception
+    end
+
+    if e = example.exception
+      new_exception = e.exception(e.message + "[Retried #{retries} times]")
+      new_exception.set_backtrace e.backtrace
+      example.instance_variable_set(:@exception, new_exception)
+    end
+  end
+end
+
+RSpec.configure do |config|
+  config.include Sometimes
+  config.alias_example_to :sometimes, :sometimes => true
+  config.add_setting :sometimes_retry_count, :default => 5
+
+  config.around(:each, :sometimes => true) do |example|
+    retries = example.metadata[:retries] || RSpec.configuration.sometimes_retry_count
+    run_with_retries(example, retries)
+  end
+
+  config.after(:suite) do
+    message = proc do |color, text|
+      colored = RSpec::Core::Formatters::ConsoleCodes.wrap(text, color)
+      notification = RSpec::Core::Notifications::MessageNotification.new(colored)
+      formatter = RSpec.configuration.formatters.first
+      formatter.message(notification) if formatter.respond_to?(:message)
+    end
+
+    retried_examples = RSpec.world.example_groups.map do |g|
+      g.descendants.map do |d|
+        d.filtered_examples.select do |e|
+          e.metadata[:sometimes] && e.metadata.fetch(:retried, 1) > 1
+        end
+      end
+    end.flatten
+
+    message.call(retried_examples.empty? ? :green : :yellow, "\n\nRetried examples: #{retried_examples.count}")
+
+    retried_examples.each do |e|
+      message.call(:cyan, "  #{e.full_description}")
+      path = RSpec::Core::Metadata.relative_path(e.location)
+      message.call(:cyan, "  [#{e.metadata[:retried]}/#{e.metadata[:retries]}] " + path)
+    end
+  end
+end