如何解决在 docker 容器中本地执行 WDIO-Test 会引发错误:@wdio/cli:utils: A service failed in the 'onPrepare' hook
我在 docker 容器中本地执行无头 e2e 测试,如下所示:
docker-compose up
yarn test
我在开始时收到此错误消息:
ERROR @wdio/cli:utils: A service Failed in the 'onPrepare' hook
TypeError: Cannot read property 'args' of undefined
at DockerLauncher.onPrepare (C:\myProgs\myWdioTest\node_modules\wdio-docker-service\lib\launcher.js:30:9)
at C:\myWdioTest\myWdioTest\node_modules\@wdio\cli\build\utils.js:24:40
at Array.map (<anonymous>)
at Object.runServiceHook (C:\myProgs\myWdioTest\node_modules\@wdio\cli\build\utils.js:21:33)
at Launcher.run (C:\myProgs\myWdioTest\node_modules\@wdio\cli\build\launcher.js:61:27)
at processticksAndRejections (internal/process/task_queues.js:95:5)
我没有使用 onPrepare-Hook wdio-configuration-file(见下文)。
测试每次都继续进行并实际上成功完成,就像它应该的那样。在这一点上,简单地抑制此错误消息对我来说是一个可行的解决方案(因为此错误不会影响测试结果)。
存在用于在 saucelabs 上运行的测试的解决方案 here,但这对我不起作用。但这让我怀疑是否必须在我的 docker-compose-file 中寻找解决方案:
version: "3"
services:
chrome:
image: selenium/node-chrome:4.0.0-rc-1-prerelease-20210713
shm_size: 2gb
depends_on:
- selenium-hub
environment:
- SE_EVENT_BUS_HOST=selenium-hub
- SE_EVENT_BUS_PUBLISH_PORT=4442
- SE_EVENT_BUS_SUBSCRIBE_PORT=4443
ports:
- "6900:5900"
selenium-hub:
image: selenium/hub:4.0.0-rc-1-prerelease-20210713
container_name: selenium-hub
ports:
- "4442:4442"
- "4443:4443"
- "4444:4444"
这是我的 wdio-configuration-file 的内容:
import browserOptions from "./browserOpts";
import CucumberOptions from "./cucumberOpts";
const fs = require('fs');
const wdioParallel = require('wdio-cucumber-parallel-execution');
const reporter = require('cucumber-html-reporter');
const currentTime = new Date().toJSON().replace(/:/g,"-");
const jsonTmpDirectory = `reports/json/tmp/`;
let featureFilePath = `featureFiles/*.feature`;
let timeout = 30000;
exports.config = {
hostname: 'localhost',port: 4444,sync: true,specs: [
featureFilePath
],maxInstances: 1,capabilities: [{
maxInstances: 1,browserName: "chrome",'goog:chromeOptions': browserOptions.getChromeOpts(),}],logLevel: 'error',bail: 0,baseUrl: 'http://localhost',waitforTimeout: timeout,connectionRetryTimeout: timeout * 3,connectionRetryCount: 3,services: ['docker'],framework: 'cucumber',reporters: [
['cucumberjs-json',{
jsonFolder: jsonTmpDirectory,language: 'de'
}]
],cucumberOpts: CucumberOptions.getDefaultSettings(),before: function (capabilities,specs) {
browser._setwindowSize(1024,768)
},beforeSuite: function (suite) {
console.log(`Suite "${suite.fullTitle}" from file "${suite.file}" starts`);
},beforeTest: function (test) {
console.log(`Test "${test.title}" starts`);
},afterTest: function (test) {
console.log(`Test "${test.title}" finished`);
},onComplete: () => {
console.log('<<< E2E-TEST COMPLETED >>>\n\n');
try {
let consolidatedJsonArray = wdioParallel.getConsolidatedData({
parallelExecutionReportDirectory: jsonTmpDirectory
});
let jsonFile = `${jsonTmpDirectory}report.json`;
fs.writeFileSync(jsonFile,JSON.stringify(consolidatedJsonArray));
let options = {
theme: 'bootstrap',jsonFile: jsonFile,output: `reports/html/report-${currentTime}.html`,reportSuiteAsScenarios: true,scenarioTimestamp: true,launchReport: true,ignoreBadJsonFile: true
};
reporter.generate(options);
} catch (err) {
console.log('err',err);
}
}
};
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