test/test_helper.rb


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# 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"

# 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

class ActiveSupport::TestCase
  private
    def create_inbound_email(fixture_name)
      ActionMailroom::InboundEmail.create!.tap do |inbound_email|
        inbound_email.raw_email.attach \
          ActiveStorage::Blob.create_after_upload! \
            io: file_fixture(fixture_name).open, filename: fixture_name, content_type: 'message/rfc822'
      end
    end
end