URL heplers가 테스트에서 작동하지 않는 이유는 무엇입니까?

Question

사양/rails_helper.rb

ENV['RAILS_ENV'] ||= 'test' 
require File.expand_path('../../config/environment', __FILE__) 
abort("The Rails environment is running in production mode!") if Rails.env.production? 
require 'spec_helper' 
require 'rspec/rails' 
require 'capybara/rspec' 
require 'factory_girl_rails' 

Dir[Rails.root.join('spec/support/**/*.rb')].each { |f| require f } 

ActiveRecord::Migration.maintain_test_schema! 

RSpec.configure do |config| 
    config.include Rails.application.routes.url_helpers 

    config.infer_spec_type_from_file_location! 

    config.before(:suite) { DatabaseCleaner.clean_with :truncation } 
    config.before(:each) { DatabaseCleaner.strategy = :transaction } 

    config.before(:each, js: true) do 
    DatabaseCleaner.strategy = :truncation 
    end 

    config.before(:each) { DatabaseCleaner.start } 
    config.after(:each) { DatabaseCleaner.clean } 
    config.filter_rails_from_backtrace! 
end 

사양/spec_helper.rb

RSpec.configure do |config| 
    config.expect_with :rspec do |expectations| 
    expectations.include_chain_clauses_in_custom_matcher_descriptions = true 
    end 

    config.mock_with :rspec do |mocks| 
    mocks.verify_partial_doubles = true 
    end 
end 

내 테스트 나는이 테스트를 실행하기 위해 노력하고있어

require 'rails_helper' 

RSpec.describe "Test if root exists", type: :request do 
    describe "GET /" do 
    it "visits root" do 
     visit root_url 
     expect(current_url).to eql(root_url) 
    end 
    end 
end 

, 나는 오류가 발생

Failures: 

    1) Test if root exists GET/visits root 
    Failure/Error: visit root_url 

    NoMethodError: 
     undefined method `empty?' for nil:NilClass 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/routing/route_set.rb:761:in `optimize_routes_generation?' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/routing/url_for.rb:175:in `optimize_routes_generation?' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/routing/route_set.rb:241:in `optimize_routes_generation?' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/routing/route_set.rb:218:in `call' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/routing/route_set.rb:345:in `block (2 levels) in define_url_helper' 
    # ./spec/features/root_spec.rb:6:in `block (3 levels) in <top (required)>' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/example.rb:254:in `instance_exec' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/example.rb:254:in `block in run' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/example.rb:496:in `block in with_around_and_singleton_context_hooks' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/example.rb:453:in `block in with_around_example_hooks' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/hooks.rb:464:in `block in run' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/hooks.rb:604:in `block in run_around_example_hooks_for' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/example.rb:338:in `call' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-rails-3.5.2/lib/rspec/rails/adapters.rb:127:in `block (2 levels) in <module:MinitestLifecycleAdapter>' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/example.rb:443:in `instance_exec' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/example.rb:443:in `instance_exec' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/hooks.rb:375:in `execute_with' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/hooks.rb:606:in `block (2 levels) in run_around_example_hooks_for' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/example.rb:338:in `call' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/hooks.rb:607:in `run_around_example_hooks_for' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/hooks.rb:464:in `run' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/example.rb:453:in `with_around_example_hooks' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/example.rb:496:in `with_around_and_singleton_context_hooks' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/example.rb:251:in `run' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/example_group.rb:627:in `block in run_examples' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/example_group.rb:623:in `map' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/example_group.rb:623:in `run_examples' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/example_group.rb:589:in `run' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/example_group.rb:590:in `block in run' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/example_group.rb:590:in `map' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/example_group.rb:590:in `run' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/runner.rb:113:in `block (3 levels) in run_specs' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/runner.rb:113:in `map' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/runner.rb:113:in `block (2 levels) in run_specs' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/configuration.rb:1835:in `with_suite_hooks' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/runner.rb:112:in `block in run_specs' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/reporter.rb:77:in `report' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/runner.rb:111:in `run_specs' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/runner.rb:87:in `run' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/runner.rb:71:in `run' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/lib/rspec/core/runner.rb:45:in `invoke' 
    # /Users/mike/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rspec-core-3.5.4/exe/rspec:4:in `<top (required)>' 
    # ./bin/rspec:7:in `load' 
    # ./bin/rspec:7:in `<main>' 

root_url 때문에 발생합니다. 나는 단지 root_url의 값을 출력하고 같은 오류를 얻으려고했다. 아이디어가 없으면 수정하는 방법

Answer 1

Capybara와 함께 사용됩니다. 기능 사양 : 요청 사양. 그 때문에 RSpec에 레일의 기능 예를 들어 그룹에 URL 헬퍼 포함 - https://github.com/rspec/rspec-rails/blob/e8054a1cd03044f725030fe8315952cf3799a395/lib/rspec/rails/example/feature_example_group.rb#L15

변경 해봤 type: :request