uninitialized constant ActionDispatch::PerformanceTest

[Leee-xx]

Rails 6.1.7.3 / rails-perftest 0.0.7

First of all, I've had to deal with both the "don't know how to build test:prepare" and "cannot load such file -- test_helper" errors with various kludges, so I don't know if that's causing ActionDispatch::PerformanceTest not to be initialized.

I added this line to my Rakefile:

task 'test:prepare'

As for the test_helper.rb, I created a new dummy Rails app and copied the test_helper.rb from it:

ENV['RAILS_ENV'] ||= 'test'
require_relative '../config/environment'
require 'rails/test_help'

class ActiveSupport::TestCase
  # Setup all fixtures in test/fixtures/*.yml for all tests in alphabetical order.
  fixtures :all

  # Add more helper methods to be used by all tests here...
end

My test/performance/serializer_test.rb currently is just the boilerplate file from rails generate performance_test serializer.

EDIT: Here's a weird thing I just noticed -- if I require require 'rails/performance_test_help' in a rails console, ActionDispatch::PerformanceTest comes back as a valid constant, so maybe it's worthwhile pasting my benchmark file:

require 'test_helper'
require 'rails/performance_test_help'

class SerializerTest < ActionDispatch::PerformanceTest
  # Refer to the documentation for all available options
  # self.profile_options = { runs: 5, metrics: [:wall_time, :memory],
  #                          output: 'tmp/performance', formats: [:flat] }

  test "homepage" do
    get '/'
  end
end

I'm also invoking the test like this: bundle exec rails test:benchmark TEST=test/performance/serializer_test.rb

[istana]

Hi,

the gem has not been released to rubygems for years, I'd recommend to try to use master branch like:

gem 'rails-perftest', github: 'rails/rails-perftest'

and that might solve your problems.