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如何在Alpine Linux上运行Angular6 E2E测试

alpine selenium-chromedriver protractor angular linux

hamilton.lima · 技术社区 · 8 年前

在尝试使用运行E2E测试时 Alpine Linux 我们有以下神秘的错误:

E/launcher - spawn (...)/selenium/chromedriver_2.40 ENOENT

如何繁殖

docker run -it --name my-alpine --rm alpine:latest /bin/ash
apk add --update nodejs nodejs-npm chromium \
    && export CHROME_BIN=/usr/bin/chromium-browser

npm install -g @angular/cli
ng new testAlpine
cd testAlpine
ng e2e

结果

[14:10:54] I/file_manager - creating folder /testAlpine/node_modules/protractor/node_modules/webdriver-manager/selenium
â¹ ï½¢wdmï½£: Compiled successfully.
[14:10:54] I/update - chromedriver: unzipping chromedriver_2.40.zip
[14:10:55] I/update - chromedriver: setting permissions to 0755 for /testAlpine/node_modules/protractor/node_modules/webdriver-manager/selenium/chromedriver_2.40
(node:121) [DEP0022] DeprecationWarning: os.tmpDir() is deprecated. Use os.tmpdir() instead.
[14:10:55] I/launcher - Running 1 instances of WebDriver
[14:10:55] I/direct - Using ChromeDriver directly...
[14:10:55] E/launcher - spawn /testAlpine/node_modules/protractor/node_modules/webdriver-manager/selenium/chromedriver_2.40 ENOENT
[14:10:55] E/launcher - Error: spawn /testAlpine/node_modules/protractor/node_modules/webdriver-manager/selenium/chromedriver_2.40 ENOENT
    at _errnoException (util.js:1024:11)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:190:19)
    at onErrorNT (internal/child_process.js:372:16)
    at _combinedTickCallback (internal/process/next_tick.js:138:11)
    at process._tickCallback (internal/process/next_tick.js:180:9)
[14:10:55] E/launcher - Process exited with error code 199
An unexpected error occured: undefined

一些调查细节

假设量角器使用 Nodejs spawn function ,我们尝试从ash运行该命令,结果显示“未找到”消息!稍微挖掘一下,发现这可能与缺少动态链接库有关。

为了验证这个假设,我们安装了 binutils 以检查动态链接依赖关系。

apk add --update binutils
readelf -l /testAlpine/node_modules/protractor/node_modules/webdriver-manager/selenium/chromedriver_2.40

结果显示了Alpine Linux中不存在的依赖性,

/lib64/ld-linux-x86-64。所以2.

Elf file type is EXEC (Executable file)
Entry point 0x490000
There are 11 program headers, starting at offset 64

Program Headers:
  Type           Offset             VirtAddr           PhysAddr
                 FileSiz            MemSiz              Flags  Align
  PHDR           0x0000000000000040 0x0000000000200040 0x0000000000200040
                 0x0000000000000268 0x0000000000000268  R      0x8
  INTERP         0x00000000000002a8 0x00000000002002a8 0x00000000002002a8
                 0x000000000000001c 0x000000000000001c  R      0x1
      [Requesting program interpreter: /lib64/ld-linux-x86-64.so.2]
  LOAD           0x0000000000000000 0x0000000000200000 0x0000000000200000
                 0x000000000028f27c 0x000000000028f27c  R      0x1000
  LOAD           0x0000000000290000 0x0000000000490000 0x0000000000490000

尝试使用webdriver manager获取更新的chrome驱动程序版本也不起作用。下载的版本也有相同的问题。

npm install -g webdriver-manager

webdriver-manager update
webdriver-manager: using global installed version 12.0.6
[14:30:20] I/file_manager - creating folder /usr/lib/node_modules/webdriver-manager/selenium
[14:30:21] I/update - chromedriver: unzipping chromedriver_2.40.zip
[14:30:21] I/update - chromedriver: setting permissions to 0755 for /usr/lib/node_modules/webdriver-manager/selenium/chromedriver_2.40

/testAlpine # /usr/lib/node_modules/webdriver-manager/selenium/chromedriver_2.40
/bin/ash: /usr/lib/node_modules/webdriver-manager/selenium/chromedriver_2.40: not found

随机吹捧

像 Alpine Linux moved to musl libc 有必要重建吗使用chromeDriver吗?

1 回复 | 直到 8 年前

sdumont 8 年前

有必要使用musl libc重建chromedriver,或者使用alpine repos的chromedriver软件包,您可以使用 apk add --no-cache chromium-chromedriver .

您还需要告诉量角器使用正确的二进制代码 chromeDriver: '/usr/bin/chromedriver' 在量角器配置中。

JohannesB Tom Ritter 5 年前

对于将来有这个问题的人,我完全无法得到 alpine + angular + protractor + webdriver-manager 以任何开箱即用的方式进行合作。

经过多次修补,我设法使它顺利地工作了

使用webdriver管理器生成配置
使用alpine注册表中的驱动程序覆盖webdriver管理器驱动程序

Dockerfile:

FROM node:12-alpine

RUN \
  echo "http://dl-cdn.alpinelinux.org/alpine/edge/community" >> /etc/apk/repositories \
  && echo "http://dl-cdn.alpinelinux.org/alpine/edge/main" >> /etc/apk/repositories \
  && echo "http://dl-cdn.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories \
  && apk --no-cache update \
  && apk --no-cache upgrade \
  && apk add --no-cache --virtual .build-deps chromium chromium-chromedriver \
  && rm -rf /var/cache/apk/* /tmp/*

ENV CHROME_BIN /usr/bin/chromium-browser

量角器。conf.js

capabilities: {
    browserName: 'chrome',
    chromeOptions: {
        args: ['--headless', '--disable-gpu', '--no-sandbox'],
    },
},
directConnect: true,

脚本看起来有点像这样:

  before_script:
    - yarn install --frozen-lockfile --cache-folder "$CI_PROJECT_DIR/.yarn"
  script:
    - npx webdriver-manager update --versions.chrome="$(chromium-browser --version | cut -d ' ' -f 2)"
    - mv "$CI_PROJECT_DIR/node_modules/webdriver-manager/selenium/chromedriver_$(chromium-browser --version | cut -d ' ' -f 2)" "$CI_PROJECT_DIR/node_modules/webdriver-manager/selenium/chromedriver.bak"
    - ln -s "/usr/bin/chromedriver" "$CI_PROJECT_DIR/node_modules/webdriver-manager/selenium/chromedriver_$(chromium-browser --version | cut -d ' ' -f 2)"
    - yarn run e2e --webdriverUpdate=false

请注意,上面提到的代码是Gitlab CI配置的代码:根据您的需要,您可能需要:

将其转换为可用于您的环境的脚本
删除/替换某些环境变量