轨道上的红宝石 - 在使用水豚时调整 Chrome 窗口的大小

Question

我使用Capybara（含硒）和Chrome以及RSpec。但是我想在某些测试中更改浏览器的宽度。在这种情况下，解决方案是什么？

规格/spec_helper.rb

ENV["RAILS_ENV"] ||= 'test'
require File.expand_path("../../config/environment", __FILE__)
require 'rspec/rails'
require 'rspec/autorun'
require 'capybara/rspec'
# Requires supporting ruby files with custom matchers and macros, etc,
# in spec/support/ and its subdirectories.
Dir[Rails.root.join("spec/support/**/*.rb")].each {|f| require f}
# Using chrome as browser to test in capybara.
Capybara.register_driver :selenium do |app|
  Capybara::Selenium::Driver.new(app, :browser => :chrome)
end
# RSpec config.
RSpec.configure do |config|
  config.include Devise::TestHelpers, :type => :controller    
  # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
  config.fixture_path = "#{::Rails.root}/spec/fixtures"
  # If you're not using ActiveRecord, or you'd prefer not to run each of your
  # examples within a transaction, remove the following line or assign false
  # instead of true.
  config.use_transactional_fixtures = false
  # If true, the base class of anonymous controllers will be inferred
  # automatically. This will be the default behavior in future versions of
  # rspec-rails.
  config.infer_base_class_for_anonymous_controllers = false
  # Clean test database.
  config.before(:suite) do
    DatabaseCleaner.strategy = :truncation
  end
  config.before(:each) do
    DatabaseCleaner.start
  end
  config.after(:each) do
    DatabaseCleaner.clean
  end
end

Answer 1

Selenium Webdriver 中有resize_to可以使用的函数：

page.driver.browser.manage.window.resize_to(1024, 768)

窗口还有其他一些可能有用的方法。

Answer 2

我发现Driver#browser调用现已弃用（Capybara 2.5.0）。

您可以使用 Driver#resize_window_to 调用来调整窗口大小：

page.driver.resize_window_to(page.driver.current_window_handle, 1_200, 800)

您也可以使用Session#current_window然后Window#resize_to：

page.current_window.resize_to(1_200, 800)

有关详细信息，请查看文档：

http://www.rubydoc.info/github/jnicklas/capybara/Capybara

Answer 3

回答晚了，但有人可能需要这个。您可以通过指定窗口大小来启动 chromedriver，这样您就不需要在加载页面后调整其大小：

Capybara.register_driver :chrome_sizes do |app|
  profile = Selenium::WebDriver::Chrome::Profile.new 
  Capybara::Selenium::Driver.new(app,
    :browser => :chrome,
    :profile => profile,
    :args => ["--window-size=1240,1400"]
  )
end

Answer 4

试试这个：

it "testname", :js => true do
  set_selenium_window_size(1280, 800) if Capybara.current_driver == :selenium 
  # Resize window. NB: cannot be moved to before :all block, because there Capybara.current_driver will be :webkit. It changes to :selenium inside :js => true blocks.
  # ... the rest of your test ...
end
def set_selenium_window_size(width, height)
  window = Capybara.current_session.driver.browser.manage.window
  window.resize_to(width, height)
end

感谢Sidane的要点 https://gist.github.com/Sidane/2204218

Answer 5

以防万一有人仍然需要解决此问题的帮助：

Capybara.register_driver :selenium_chrome do |app|
    Capybara::Selenium::Driver.new(app, browser: :chrome, options: Selenium::WebDriver::Chrome::Options.new(args: ['--window-size=1920,1080'])) end