e2e测试在docker中失败，但在本地通过

Question

我试图通过ci环在docker映像中运行e2e测试。

在7个测试中，有6个测试失败，而1个测试通过。 但是当我在本地运行它们时，所有测试都通过了。

这是我得到的错误

✗ Should Display Dashboard Header and Loan Information
      - Failed: No element found using locator: By(css selector, h3[class="sprk-b-TypeDisplayFour sprk-o-Stack__item sprk-u-Color--white"])
          at elementArrayFinder.getWebElements.then (/home/circleci/project/node_modules/protractor/built/element.js:814:27)
          at ManagedPromise.invokeCallback_ (/home/circleci/project/node_modules/selenium-webdriver/lib/promise.js:1376:14)
          at TaskQueue.execute_ (/home/circleci/project/node_modules/selenium-webdriver/lib/promise.js:3084:14)
          at TaskQueue.executeNext_ (/home/circleci/project/node_modules/selenium-webdriver/lib/promise.js:3067:27)
          at asyncRun (/home/circleci/project/node_modules/selenium-webdriver/lib/promise.js:2927:27)
          at /home/circleci/project/node_modules/selenium-webdriver/lib/promise.js:668:7
          at <anonymous>
          at process._tickCallback (internal/process/next_tick.js:189:7)Error
          at ElementArrayFinder.applyAction_ (/home/circleci/project/node_modules/protractor/built/element.js:459:27)
          at ElementArrayFinder.(anonymous function).args [as getText] (/home/circleci/project/node_modules/protractor/built/element.js:91:29)
          at ElementFinder.(anonymous function).args [as getText] (/home/circleci/project/node_modules/protractor/built/element.js:831:22)
          at Dashboard.getDashboardHeaderText (/home/circleci/project/e2e/app/loan/dashboard/dashboard.po.ts:47:41)
          at Object.<anonymous> (/home/circleci/project/e2e/app/loan/dashboard/dashboard.e2e-spec.ts:18:30)
          at step (/home/circleci/project/node_modules/tslib/tslib.js:133:27)
          at Object.next (/home/circleci/project/node_modules/tslib/tslib.js:114:57)
          at /home/circleci/project/node_modules/tslib/tslib.js:107:75
          at new Promise (<anonymous>)
          at Object.__awaiter (/home/circleci/project/node_modules/tslib/tslib.js:103:16)
      From: Task: Run it("Should Display Dashboard Header and Loan Information") in control flow
          at UserContext.<anonymous> (/home/circleci/project/node_modules/jasminewd2/index.js:94:19)
          at 

所有其他测试也都失败了，找不到相同的错误元素。

Answer 1

有可能在容器尚未准备就绪时执行测试。干净的解决方案是在映像中实现HEALTHCHECK命令，并在执行测试之前等待健康状态。较简单的解决方案是启动容器，进入睡眠状态（几秒钟就足够了），然后执行测试。