accounts_controller_test.rb

require 'test_helper'

describe AccountsController do
# class AccountsControllerTest < ActionDispatch::IntegrationTest

  before do
    user = users(:glenn)
    sign_in(user)
  end

  def account
    @account ||= accounts :one
  end

  it 'should get index' do
    get one_accounts_url
    value(response).must_be :success?
  end

  it 'should get new' do
    get new_account_url(user_id: users(:glenn).id)
    value(response).must_be :success?
  end

  it 'should edit' do
    get edit_account_url(account)
    value(response).must_be :success?
  end

end

console output

$ bin/rails test test/controllers/accounts_controller_test.rb:25

Error:
AccountsController#test_0005_should edit:
ActionController::UrlGenerationError: No route matches {:action=>"http://test.host/accounts/980190962/edit", :controller=>"accounts"}
    test/controllers/accounts_controller_test.rb:25:in `block (2 levels) in <top (required)>'

test_helper.rb

ENV['RAILS_ENV'] = 'test'
require File.expand_path('../../config/environment', __FILE__)
require 'rails/test_help'
require 'minitest/rails'

class CarrierWave::Mount::Mounter
  def store!
    # Not storing uploads in the tests
  end
end

class ActionController::TestCase
  include ActiveJob::TestHelper
  include Devise::Test::ControllerHelpers
end

class ActionDispatch::IntegrationTest
  include Devise::Test::IntegrationHelpers
end

class ActiveSupport::TestCase
  ActiveRecord::Migration.check_pending!
  fixtures :all
  include ActionDispatch::TestProcess # fixture_file_upload

  # look for files in test directory.
  CarrierWave.root = Rails.root.join('test/fixtures/files')

  def multi_page_pdf_file(filename = 'airframe.pdf')
    File.new("#{Rails.root}/test/fixtures/files/#{filename}")
  end
  
  def sample_file(filename = 'test_image.png')
    File.new("#{Rails.root}/test/fixtures/files/#{filename}")
  end

  def avatar_file(filename = 'avatar.jpg')
    File.new("#{Rails.root}/test/fixtures/files/#{filename}")
  end

  def uploaded_file_object(klass, attribute, file, content_type = 'text/plain')
    filename = File.basename(file.path)
    klass_label = klass.to_s.underscore

    ActionDispatch::Http::UploadedFile.new(
      tempfile: file,
      filename: filename,
      head: %(Content-Disposition: form-data; name="#{klass_label}[#{attribute}]"; filename="#{filename}"),
      content_type: content_type
    )
  end

  def after_teardown
    CarrierWave.clean_cached_files!(0)
    Warden.test_reset!
    super
  end

  def assert_permit(user, record, action)
    msg = "User #{user.inspect} should be permitted to #{action} #{record}, but isn't permitted"
    assert permit(user, record, action), msg
  end

  def refute_permit(user, record, action)
    msg = "User #{user.inspect} should NOT be permitted to #{action} #{record}, but is permitted"
    refute permit(user, record, action), msg
  end

  def permit(user, record, action)
    cls = self.class.superclass.to_s.gsub(/Test/, '')
    cls.constantize.new(user, record).public_send("#{action}?")
  end
end

users.yml

glenn:
  username: mr_glenn
  owner: one (School)
  first_name: Glenn
  last_name: Smith
  email: glenn@email.com
  birthdate: <%= Time.zone.today-40.years %>
  encrypted_password: <%= Devise::Encryptor.digest(User, 'flightRecord@8') %>
  legacy_password_salt: ''
  legacy_password_hash: ''
  confirmed_at: <%= Time.now %>