RSpec水豚配铬

Question

我正在尝试将RSpec套件配置为在Chromium浏览器(而不是google-chrome(上运行。。。测试套件失败，出现以下错误

1.2) Failure/Error: Unable to infer file and line number from backtrace
Selenium::WebDriver::Error::SessionNotCreatedError:
session not created: This version of ChromeDriver only supports Chrome version 80
# 0   chromedriver                        0x0000000103190329 chromedriver + 3838761
# 1   chromedriver                        0x000000010312a123 chromedriver + 3420451
# yada yada

我已经安装了ChromeDriver和chromium浏览器(通过brew cask install chromedriver chromium(。。。

这是水豚的spec_helper.rb配置

require "capybara/rails"
require "capybara/rspec"
require "capybara-screenshot/rspec"
require "selenium/webdriver"
# Capybara.default_driver = :selenium_chrome_headless
Capybara.default_driver = :selenium_chrome

当安装铬(与铬相同的v.82(时，这非常有效，但不适用于铬。。。有什么方法可以让硒铬驱动器与铬一起工作吗？

Answer 1

这里有一种方法：

require 'capybara'
require 'capybara/dsl'
require 'selenium-webdriver'
include Capybara::DSL
Capybara.register_driver :selenium_chromium do |app|
options = Selenium::WebDriver::Chrome::Options.new(binary: "/Applications/Chromium.app/Contents/MacOS/Chromium")
Capybara::Selenium::Driver.new(app, :browser => :chrome, options: options)
end
Capybara.current_driver = :selenium_chromium
Capybara.app_host = 'https://example.org'
visit('/')

正如您所发现的，Chrome/Chrome版本需要与ChromeDriver版本相匹配。这意味着brew cask install chromium可能无法工作，因为它将安装最新的夜间版本。

要获得一个有效的Chromium版本，请首先检查您的ChromeDriver版本：

$ chromedriver --version
ChromeDriver 81.0.4044.69 (6813546031a4bc83f717a2ef7cd4ac6ec1199132-refs/branch-heads/4044@{#776})

接下来，您需要找到一个具有相同主要版本的稳定Chromium构建。我建议从https://chromium.woolyss.com/--它将有一个类似于的标签

81.0.4044.129(737173(•2020年4月28日，星期二

如果您知道内部版本号(本例中为737173(，您还可以从Chromium构建存储库下载兼容的快照：

https://commondatastorage.googleapis.com/chromium-browser-snapshots/Mac/737173/chrome-mac.zip

Answer 2

我发现让RSpec+Capybara在Alpine Docker图像上工作的最简单方法：

Dockerfile

FROM ruby:3.0.2-alpine
RUN apk --update add --no-cache chromium chromium-chromedriver

Gemfile

group :test do
gem 'capybara' # 3.36.0 as of writing this
gem 'selenium-webdriver' # 4.0.3 as of writing this
# Make sure no other gems are installed, such as `webdrivers`
end

rails_helper.rb

Capybara.register_driver :headless_chromium do |app|
options = Selenium::WebDriver::Chrome::Options.new
options.add_argument("--headless")
options.add_argument("--no-sandbox")
options.add_argument("--disable-dev-shm-usage")
options.add_argument("--window-size=1280,900")
Capybara::Selenium::Driver.new(app, browser: :chrome, capabilities: options)
end
Capybara.javascript_driver = :headless_chromium