Selenium或Coypu等待元素展示并在展示前获得时间

Question

我使用Selenium进行UI测试.

当我点击一次按钮时我想要的是什么.然后我会等到一个元素存在.并花时间花多长时间.如果花费的时间超过超时ms.所以它会给0或不存在.

我用Coypu尝试了这个:

browser.FindCss("[name=""searchbtn""]").Click()
Dim vStopwatch = Stopwatch.StartNew()

 browser.TryUntil(Function() browser.FindXPath("//*[@id=""blockDocumentsSearch""]").Hover(), Function() browser.FindCss("#repSearchDocuments > .list-group-item").Exists(), TimeSpan.FromMilliseconds(500), New Options() With {
                .Timeout = TimeSpan.FromMilliseconds(10000)})


        If Not browser.FindCss("#repSearchDocuments > .list-group-item").Exists() Then
            pTCH.ErrorCurrentStep("Not showing any documents or timeout.", browser)
            Return 0
        End If

       Return vStopwatch.ElapsedMilliseconds

但它似乎没有给出正确的结果.

Answer 1

我为 Coypu 找到了一种解决方案：

Public Module BrowserSessionExtension
    <Extension>
    Public Function WaitUntilElementIsPresent(browser As BrowserSession, cssSelector As String, Optional timeout As Integer = 10) As Long
        Dim vExist As Boolean = False
        Dim vStopwatch = Stopwatch.StartNew()
        For i As Integer = 0 To timeout - 1
            If browser.FindCss(cssSelector, Options.First).Exists() Then
                vExist = True
                Exit For
            End If
            Thread.Sleep(1000)
        Next
        vStopwatch.Stop()
        If vExist Then
            Return vStopwatch.ElapsedMilliseconds
        Else
            Return 0
        End If
    End Function
End Module

进而：

Dim vElementLoadTime As Long = browser.WaitUntilElementIsPresent("#repSearchDocuments > .list-group-item", 20)