如何从另一个容器连接到独立的 selenium-firefox 容器

Question

我正在尝试运行位于我的自动化容器中的自动化 GUI 测试套件。

我单独下载了独立的 selenium-firefox 映像并作为在端口 4444 上运行的容器运行。它运行在

localhost:4444/wd/hub

现在，我正在尝试运行自动化容器中的测试套件，我使用下面的代码在无头模式下运行，以在我的 robotsframework 测试套件中达到 firefox 版本的 selenium。

Open Browser      http://www.youtube.com    headlessfirefox    remote_url=http://localhost:4444/wd/hub

当我从我的机器运行测试套件时，这种方法工作正常，当我在自动化容器内运行它时，它会失败。

有什么方法可以让我的自动化容器到达 selenium-firefox 容器以使用浏览器。

错误：

C: 10: Open Chrome headless                                          
/usr/local/lib/python3.6/site-packages/requests/__init__.py:91: 
RequestsDependencyWarning: urllib3 (1.26.3) or chardet (3.0.4) doesn't 
match a supported version!
RequestsDependencyWarning)
[ WARN ] Retrying (Retry(total=2, connect=None, read=None, redirect=None, 
status=None)) after connection broken by 
'NewConnectionError('<urllib3.connection.HTTPConnection object at 
0x7f4a322440b8>: Failed to establish a
[ WARN ] Retrying (Retry(total=1, connect=None, read=None, redirect=None, 
status=None)) after connection broken by 
'NewConnectionError('<urllib3.connection.HTTPConnection object at 
0x7f4a32244710>: Failed to establish a
new connection: [Errno 111] Connection refused',)': /wd/hub/session
[ WARN ] Retrying (Retry(total=0, connect=None, read=None, redirect=None, 
status=None)) after connection broken by 
'NewConnectionError('<urllib3.connection.HTTPConnection object at 
0x7f4a32235710>: Failed to establish a
new connection: [Errno 111] Connection refused',)': /wd/hub/session
| FAIL |
MaxRetryError: HTTPConnectionPool(host='localhost', port=4444): Max 
retries exceeded with url: /wd/hub/session (Caused by 
NewConnectionError('<urllib3.connection.HTTPConnection object at 
0x7f4a32235438>: Failed to establish a new connection: [Errno 111] 
Connection refused',))

任何帮助将不胜感激

Answer 1

您需要使用要创建的所有容器创建 docker-compose.yml 文件：

version: '3.8'
services:
  chrome:
    image: selenium/standalone-chrome:85.0
    hostname: chrome
    ports:
      - "4444:4444"
  e2e-tests:
    build: .
    depends_on:
      - chrome

并在容器内使用主机名“chrome”，它将使用它，如下所示：

cls.driver = webdriver.Remote(command_executor='http://chrome:4444/wd/hub',desired_capabilities=DesiredCapabilities.CHROME)