I don't know how to test subdomains with docker-compose + Rails 5.1 + rspec + HeadlessChrome

environment:
Rails: 5.1.5
Ruby: 2.5.0
capybara:2.18.0
rspec-rails: 3.7.2
selenium-webdriver: 3.10.0

I'm a beginner at Docker.We are currently creating a development environment with docker-compose as follows, and then testing capybara with rspec (system spec), but we are having trouble knowing how to test subdomains.

docker-compose.yml

services:
  nginx:
    image:nginx:alpine
    container_name —my_nginx
    links:
      - app
    ports:
      - "80:80"
    volumes:
      - .:/app
    depend_on:
      - chrome

  app:
    build:
      context:.
    command:bash-c "rm-ftmp/pids/server.pid&./bin/webpack-dev-server&bundle exec rails-b 0.0.0.0-p 3000"
    working_dir: /app
    container_name —my_app
    hostname:app
    ports:
     - '3000:3000'
    expose:
      - 3000
    volumes:
      - .:/app
      - rails_public: /app/public
      - rails_log: /app/log
      - bundle: /app/vendor/bundle
      - /app/node_modules
    links:
      - postgres
      - redis
    depend_on:
      - postgres
      - chrome
    tty —true
    stdin_open —true
    environment:
      WEBPACKER_DEV_SERVER_HOST: 0.0.0.0

  chrome:
    container_name —my_chrome
    image —Selenium/standalone-chrome
    ports:
      - 4444:4444
    volumes:
      - .:/app
Abbreviated.

capybara.rb

require "capybara/rspec"
require "selenium-webdriver"

Capybara.register_driver: selenium_remote do|app|
  capabilities=Selenium::WebDriver::Remote::Capabilities.chrome(
    ChromeOptions: {
      args: ["--headless", "--no-sandbox", "--disable--gpu", "--window-size=1280x800", ],
    },
    )
  Capybara::Selenium::Driver.new(app,
                                 url: "http://chrome:4444/wd/hub",
                                 browser: :remote,
                                 desired_capabilities:capabilities)
end

Capybara.run_server=false
Capybara.default_driver=: selenium_remote

If spec_helper.rb is configured for the following , non-subdomain tests will run successfully:

RSpec.configure do | config |
  config.before:each, type::system do
    drive_by — selenium_remote
    Capybara.app_host="http://{IPSocket.getaddress(Socket.gethostname)}"
    Capybara.always_include_port=true
  end
Abbreviated.

However, I just don't know how to test the subdomain.
As for the image, I am thinking that /etc/hosts will be able to check the IP and assign a subdomain to the app container and access it, but I would appreciate it if you could let me know if there is a good way to use extra_hosts on docker-compose.Thank you for your cooperation.

Tried:
①Capybara.app_host="http://admin.{IPSocket.getaddress(Socket.gethostname)}"
→ IP address could not be used.

app Enter app container /etc/hosts to assign app container IP to admin.app and set Capybara.app_host="http://admin.app"
→In the first place, Capybara.app_host="http://app" cannot be accessed, and the following error appears when Capybara.app_host="http://app:3000".
HTTP parse error, malformed request():#<Puma::HttpParserError: Invalid HTTP format, parsing failures.>

<Capybara.app_host="http://nginx" and settings
→ You can connect to a place that is not a subdomain, but somehow you access the development DB ( )

n Enter the nginx container and assign the IP of the nginx container to admin.nginx with Capybara.app_host="http://admin.nginx"
→ Connection failed.

ruby-on-rails docker rspec docker-compose capybara

2022-09-30 15:45

1 Answers

Capybara.server_host='0.0.0.0'

Why don't you set up ?

2022-09-30 15:45

If you have any answers or tips

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