```ruby
# Configure Rails Environment
ENV["RAILS_ENV"] = "test"

require_relative "../test/dummy/config/environment"
ActiveRecord::Migrator.migrations_paths = [File.expand_path("../test/dummy/db/migrate", __dir__)]
require "rails/test_help"

require "byebug"

# Filter out Minitest backtrace while allowing backtrace from other libraries
# to be shown.
Minitest.backtrace_filter = Minitest::BacktraceFilter.new

require "rails/test_unit/reporter"
Rails::TestUnitReporter.executable = 'bin/test'

# Load fixtures from the engine
if ActiveSupport::TestCase.respond_to?(:fixture_path=)
  ActiveSupport::TestCase.fixture_path = File.expand_path("fixtures", __dir__)
  ActionDispatch::IntegrationTest.fixture_path = ActiveSupport::TestCase.fixture_path
  ActiveSupport::TestCase.file_fixture_path = ActiveSupport::TestCase.fixture_path + "/files"
  ActiveSupport::TestCase.fixtures :all
end

require "action_mailroom/test_helper"

class ActiveSupport::TestCase
  include ActionMailroom::TestHelper
end
```

Add easy way to get logging information inline for test failure diagnosis
user
```ruby
# Configure Rails Environment
ENV["RAILS_ENV"] = "test"

require_relative "../test/dummy/config/environment"
ActiveRecord::Migrator.migrations_paths = [File.expand_path("../test/dummy/db/migrate", __dir__)]
require "rails/test_help"

require "byebug"

# Filter out Minitest backtrace while allowing backtrace from other libraries
# to be shown.
Minitest.backtrace_filter = Minitest::BacktraceFilter.new

require "rails/test_unit/reporter"
Rails::TestUnitReporter.executable = 'bin/test'

# Load fixtures from the engine
if ActiveSupport::TestCase.respond_to?(:fixture_path=)
  ActiveSupport::TestCase.fixture_path = File.expand_path("fixtures", __dir__)
  ActionDispatch::IntegrationTest.fixture_path = ActiveSupport::TestCase.fixture_path
  ActiveSupport::TestCase.file_fixture_path = ActiveSupport::TestCase.fixture_path + "/files"
  ActiveSupport::TestCase.fixtures :all
end

require "action_mailroom/test_helper"

class ActiveSupport::TestCase
  include ActionMailroom::TestHelper

if ARGV.include?("-v")
  ActiveRecord::Base.logger = Logger.new(STDOUT)
  ActiveJob::Base.logger    = Logger.new(STDOUT)
end
```
assistant