Question

我想等待页面上显示一定数量的元素。

为此，我使用：

wait = new WebDriverWait(driver, timeout.getValueInSec());  
wait.until(ExpectedConditions.visibilityOfAllElementsLocatedBy(locator));

尽管超时足够长，但此方法返回的元素少于我看到和期望的元素（在这个具体情况下为6个中的2个）。它可能会在找到2个元素之后立即返回，然后其余元素就会返回。

有没有办法告诉Selenium驱动程序等待X元素？类似的东西：

wait.until(ExpectedConditions.visibilityOfNElementsLocatedBy(6, locator));

Answer 1

为您的特定要求制作自定义Expected Condition 并不困难：

public static ExpectedCondition<List<WebElement>> visibilityOfNElementsLocatedBy(
      final By locator, final int elementsCount) {
    return new ExpectedCondition<List<WebElement>>() {
      @Override
      public List<WebElement> apply(WebDriver driver) {
        List<WebElement> elements = findElements(locator, driver);

        // KEY is here - we are "failing" the expected condition 
        // if there are less than elementsCount elements
        if (elements.size() < elementsCount) {
          return null;
        }

        for(WebElement element : elements){
          if(!element.isDisplayed()){
            return null;
          }
        }
        return elements;
      }

      @Override
      public String toString() {
        return "visibility of N elements located by " + locator;
      }
    };
  }

用法：

wait.until(visibilityOfNElementsLocatedBy(locator, 6));

明确等待X元素可见

1 个答案: