Question

我使用逆止器来测试我的应用程序，但它在随机测试时失败，并显示

等消息

COMMAND |命令`test`在[155.109s]之后以错误结束命令| BackstopException：ViewportNameGoesHere上的TestNameGoesHere：错误：连接ECONNREFUSED 127.0.0.1:9336

端口9336是逆止器用于连接chromy的端口之一。应用程序端口是8082。

仅在Windows中出现此问题。一切都在Linux Mint中运行。

开始测试的命令是

backstop test --configPath=backstop-config.js

配置

module.exports = {
  viewports,
  scenarios,
  paths: {
    bitmaps_reference: `backstop-smth/bitmaps_reference`,
    bitmaps_test:      `backstop-smth/bitmaps_test`,
    engine_scripts:    `backstop/engine_scripts`,
    html_report:       `backstop-smth/html_report`,
    ci_report:         `backstop-smth/ci_report`,
  },
  engine: "chrome",
  report: ["browser", "CLI"],
};

每个场景如下：

scenarios.push({
  label,
  url,
  hideSelectors: ["#debug"],
  removeSelectors: [],
  selectors: ["body"],
  readyEvent: null,
  delay: 5000,
  onReadyScript: null,
  onBeforeScript: null,
});

这是控制台输出：

Starting Chromy: port:9222 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=954,735
Starting Chromy: port:9223 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=1024,768
Starting Chromy: port:9224 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=768,1024
Starting Chromy: port:9225 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=954,735
Starting Chromy: port:9226 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=1024,768
Starting Chromy: port:9227 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=768,1024
...
Starting Chromy: port:9336 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=954,735
Starting Chromy: port:9337 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=1024,768
Starting Chromy: port:9338 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=768,1024
Starting Chromy: port:9339 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=954,735
Starting Chromy: port:9340 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=1024,768
Starting Chromy: port:9341 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=768,1024
Starting Chromy: port:9342 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=954,735
Starting Chromy: port:9343 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=1024,768
Starting Chromy: port:9344 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=768,1024
Starting Chromy: port:9345 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=954,735
Starting Chromy: port:9346 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=1024,768
Starting Chromy: port:9347 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=768,1024
Starting Chromy: port:9348 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=954,735
Starting Chromy: port:9349 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=1024,768
Starting Chromy: port:9350 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=768,1024
Starting Chromy: port:9351 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=954,735
Starting Chromy: port:9352 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=1024,768
Starting Chromy: port:9353 --disable-gpu,--force-device-scale-factor=1,--disable-infobars=true,--window-size=768,1024
      COMMAND | Command `test` ended with an error after [155.109s]
      COMMAND | BackstopException: TestNameGoesHere on ViewportNameGoesHere: Error: connect ECONNREFUSED 127.0.0.1:9336

我认为问题可能发生，因为指定的端口已经在使用，但我不确定。无论如何，正如您所看到的，逆止器在此次运行中使用了从9222到9353的所有端口 - 每个测试都需要一个之前未使用过的端口。有没有办法配置逆止器重用端口？

PS：Same question in Russian.

Answer 1

好像您在Windows上运行该端口时正在与另一个正在使用该端口的程序发生冲突。我唯一可以解决的建议是更改Chromy使用的默认端口，以便从适合在Linux和Windows上同时运行的点开始分配端口。

作为参考：默认情况下，Chromy从端口9222开始分配端口。

有关Chromy选项及其默认值的更多信息，请参见https://github.com/OnetapInc/chromy#chromyoptions。

您可以通过将typedef int z; typedef int z; typedef int z; typedef z y; typedef y z; typedef float (*x[])(int, int); typedef float (*x[])(int, int); typedef float (*x[])(int, int); typedef x m; typedef m x;添加到backstop JSON配置文件并按如下所示设置端口来设置自己的自定义“启动”端口：

engineOptions

希望这对您有所帮助！

Backstopjs无法连接它启动的浏览器

1 个答案: