Creating a testing infrastructure with Pytest , Selenium Grid and Docker
基于本文,我成功创建了可伸缩的selenium网格。
然后,我想使用Pytest在网格中运行[用Python编写的]测试套件。
我是Docker的新手,正在尝试寻找将测试过程迁移到微服务架构的最佳方法。本质上,我想让开发人员能够在其PC上本地设置完整的测试基础结构。
因此,我有4个Dockerfile和1个docker-compose.yml。
BASE dockerfile:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | FROM ubuntu ENV SEL_VERSION 2.44.0 # Update repos for Java RUN apt-get update -qqy \\ && apt-get -qqy --no-install-recommends install \\ software-properties-common \\ && rm -rf /var/lib/apt/lists/* RUN add-apt-repository -y ppa:webupd8team/java RUN echo debconf shared/accepted-oracle-license-v1-1 select true | debconf-set-selections RUN echo debconf shared/accepted-oracle-license-v1-1 seen true | debconf-set-selections # Install Java7 RUN apt-get update -qqy \\ && apt-get -qqy --no-install-recommends install \\ oracle-java7-installer \\ && rm -rf /var/lib/apt/lists/* # Download Selenium Server RUN wget http://selenium-release.storage.googleapis.com/${SEL_VERSION%.*}/selenium-server-standalone-${SEL_VERSION}.jar |
HUB dockerfile:
1 2 3 4 5 6 7 8 9 10 11 | FROM org/grid:base EXPOSE 4444 # Add and set permissions to the script that will launch the hub ADD register-hub.sh /var/register-hub.sh RUN chmod 755 /var/register-hub.sh # start a shell and run the script #WORKDIR / CMD ["/bin/bash","/var/register-hub.sh"] |
NODE dockerfile:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | FROM org/grid:base # set the FF version to use ENV FIREFOX_MINOR 34.0.5 # Update and install what's needed RUN apt-get update -qqy \\ && apt-get -qqy --no-install-recommends install \\ firefox \\ xvfb \\ bzip2 \\ && rm -rf /var/lib/apt/lists/* # setup FF RUN [ -e /usr/bin/firefox ] && rm /usr/bin/firefox ADD https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/${FIREFOX_MINOR}/linux-x86_64/en-US/firefox-${FIREFOX_MINOR}.tar.bz2 /tmp/ RUN apt-get install -q -y libdbus-glib-1-2 RUN tar -xvjf /tmp/firefox-${FIREFOX_MINOR}.tar.bz2 -C /opt/ RUN chmod -R +x /opt/firefox/ RUN ln -s /opt/firefox/firefox /usr/bin/firefox # add and set permissions for the bash script to register the node ADD register-node.sh /var/register-node.sh RUN chmod 755 /var/register-node.sh # start a shell and run the script CMD ["/bin/bash","/var/register-node.sh"] |
和PYTEST dockerfile:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | # Starting from base image FROM ubuntu # Set the Github personal token [to clone the QA code] #todo------secret------ ENV GH_TOKEN some_token_some_token_some_token_ # Install Python & pip RUN apt-get update RUN apt-get upgrade -y RUN apt-get install -y python python-pip python-dev && pip install --upgrade pip # Install GIT RUN apt-get update -y && apt-get install git -y # [in the / folder] Create the folder and add the whole project from the repo to the container RUN git clone https://$GH_TOKEN:[email protected]/org/org_QA.git /org_QA_folder # Install dependencies via pip WORKDIR /org_QA_folder RUN pip install -r dependencies.txt # CMD /bin/bash |
和docker-compose文件:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | hub: image: org/grid:hub # image must already exist ports: -"4444:4444" # HOST:CONTAINER external_links: # link to a container created outside of this YAML file - pytest volumes_from: - pytest # must be created first firefox: image: org/grid:nodeff # image must already exist links: - hub expose: -"5555" # grid console open to public |
所以...我不明白如何运行" py.test /org_QA_folder/testcase.py "之类的东西并在网格上[本质上是节点]上运行。
我首先使用
我尝试了多种方法:
不使用Pytest容器,而是在中心中克隆代码。但是在这种情况下,HUB容器运行网格的中心(每个容器指令一个CMD)。 [编辑:我选择了Docker建议的微服务架构]
我离开集线器和节点容器来运行它们的指定服务,并创建一个单独的容器[pytest]从那里发送测试。但是测试不会运行,因为此容器没有xvfb。[编辑:我刚刚安装了xvfb并开始工作]
我尝试将pytest容器用作集线器的卷,但是仍然存在从已运行服务的集线器容器中运行测试的问题。[编辑:出于开发目的,我从pytest容器中安装了代码并使用它的控制台可以测试其他容器上的内容。之后,我将使用pytest容器将代码分开]
我应该在其他容器中安装该节点容器具有的所有软件包吗?理想情况下,我想使用pytest容器控制台[至少开发基础结构]运行将发送到集线器并运行到许多节点的测试。[编辑:我没有与集线器和节点混合,我只是在pytest容器上安装了xvfb]
您会如何建议这样做?我想念什么吗?
编辑[迈向解决方案的步骤]:
我首先启动pytest容器[
在撰写文件中,出于开发目的,我使用
我更改了Pytest dockerfile并添加了以下内容:
1 2 | # Install xvfb [THAT WAS NEEDED!!!!!] RUN apt-get install -y xvfb |
我从pytest容器内部运行一个测试,到已经运行的Grid [在EC2实例上]作为概念证明,并且运行良好。它仍然可以将其发送到dockerized网格。
我想你已经快到了。
我会向
我终于使它像这样工作:
在我的代码中,我使用以下代码:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | class Fixtures_docker(unittest.TestCase): def setUp(self, hub_ip="http://HUB_CONTAINER_IP", hub_port=4444): print"--Fixtures_docker in config.py trying to run on--: %s:%s"%(hub_ip, hub_port) if platform.system() == 'Linux': from pyvirtualdisplay import Display self.display = Display(visible=0, size=(1024, 768)) self.display.start() if browser =="Firefox": self.wd = webdriver.Remote( command_executor=hub_ip + ':' + str(hub_port) + '/wd/hub', desired_capabilities={ #FIREFOX "browserName" :"firefox", #"maxInstances" : 10, "seleniumProtocol":"WebDriver", "platform" :"ANY", "node" : hub_port }) # for debugging purposes from local machine elif browser =="Firefox" and os =="Windows": self.wd = webdriver.Remote( command_executor=hub_ip + ':' + str(hub_port) + '/wd/hub', desired_capabilities={ # FIREFOX -> WINDOWS #"firefox_binary":"C:\\\\firefox3\\Firefox3.exe", # path to find another version of ff "browserName" :"firefox", #"version" :"3.0b3", # trying to run a specific ff version "platform" :"WINDOWS", "node" : hub_port, "maxSession" : 5 }) self.wd.implicitly_wait(10) def tearDown(self): self.wd.quit() if platform.system() == 'Linux': self.display.stop() |
,并在docker-compose.yml中:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | hub: image: org/grid:hub # image must already exist ports: -"8080:4444" # HOST:CONTAINER external_links: # link to a container created outside of this YAML file - pytest volumes_from: - pytest # must be created first expose: -"4444" # intercontainer communication [other containers with selenium server] firefox: image: org/grid:nodeff # image must already exist links: - hub expose: -"5555" # intercontainer communication [node registers to hub] |