空手道 UI 中的 ShadowRoot dom 元素訪問問題

Question

我正在嘗試訪問 ShadowRoot dom 樹元素，但我面臨的問題是我無法使用特定的 html 元素來調用 .ShadowRoot，因為該元素是動態的（請參閱下面的 html 代碼段 id="vaadin-text-field-error- 0). 所以我唯一能做的就是訪問一個級別的 .vaadin-text-field-container 類。基本上，下面是 html 代碼片段，它返回一個“錯誤消息 = 255 個字符最大”和我的 KarateUI 測試我試圖斷言該錯誤消息。到目前為止，我根據我閱讀的以前的論壇查詢嘗試了以下選項，但沒有運氣我永遠無法訪問返回文本“最大 255 個字符”的正確元素來進行斷言：

嘗試 1：

  * def test = script('.vaadin-text-field-container', '_.innerHTML')
  * print "Error Message is" + test

輸出 ：

evaluation (js) failed: script('.vaadin-text-field-container', '_.innerHTML'), js eval failed twice:(function(){ var fun = function(_){ return _.innerHTML }; var e = document.querySelector(".vaadin-text-field-container"); return fun(e) })(), error: {"type":"object","subtype":"error","className":"TypeError","description":"TypeError: Cannot read property 'innerHTML' of null\n    at fun (<anonymous>:1:46)\n    at <anonymous>:1:130\n    at <anonymous>:1:139","objectId":"{\"injectedScriptId\":3,\"id\":3}"}

嘗試2：

  * def test = script('//*[@id="vaadin-text-field-error-0"]', '_.innerHTML')
  * print 'Error Message is :' + test

輸出：

evaluation (js) failed: script('//*[@id="vaadin-text-field-error-0"]', '_.innerHTML'), js eval failed twice:(function(){ var fun = function(_){ return _.innerHTML }; var e = document.evaluate("//*[@id="vaadin-text-field-error-0"]", document, null, 9, null).singleNodeValue; return fun(e) })(), error: {"type":"object","subtype":"error","className":"SyntaxError","description":"SyntaxError: missing ) after argument list","objectId":"{\"injectedScriptId\":3,\"id\":3}"}

嘗試3：

* match text('#vaadin-text-field-error-0') == '255 characters max'

輸出：

evaluation (js) failed: text('#vaadin-text-field-error-0'), js eval failed twice:document.querySelector("#vaadin-text-field-error-0")['textContent'], error: {"type":"object","subtype":"error","className":"TypeError","description":"TypeError: Cannot read property 'textContent' of null\n    at <anonymous>:1:53","objectId":"{\"injectedScriptId\":3,\"id\":3}"}

這里的 HTML 代碼片段：

<vaadin-text-field class="standardformfield" id="runsetup" tabindex="0" required has-label has-helper has-value invalid has-error-message>
#shadow-root (open)
<div class="vaadin-text-field-container">

      <label part="label" id="vaadin-text-field-label-0">Run Name</label>

      <div part="input-field" id="vaadin-text-field-input-0">

        <slot name="prefix"></slot>

        <slot name="input">
          <input part="value" tabindex="0" aria-labelledby="vaadin-text-field-label-0 vaadin-text-field-input-0" placeholder="Type here..." required="" aria-describedby="vaadin-text-field-helper-0 vaadin-text-field-error-0" invalid="" aria-invalid="true">
        </slot>

        <div part="clear-button" id="clearButton" role="button" aria-label="Clear" hidden="true"></div>
        <slot name="suffix"></slot>

      </div>

      <div part="helper-text" id="vaadin-text-field-helper-0">
        <slot name="helper">No special characters, 255 characters max</slot>
      </div>

      <div part="error-message" aria-live="assertive" aria-hidden="false" id="vaadin-text-field-error-0">255 characters max</div>

    </div>

</vaadin-text-field>

有人可以看看這個並指出我在這里做錯了什么嗎？ 謝謝，桑迪

Answer 1

如果此答案不能回答您的問題： https : //stackoverflow.com/a/61742555/143475

請遵循此流程，以便我們將來可以（以通用方式）添加對此的支持： https : //github.com/intuit/karate/tree/develop/examples/ui-test

我們真的需要社區幫助來解決其中的一些問題，請考慮一下。