问题
I have an requirement of running test cases in CI pipeline. where the VM is linux. Selenium multiple window handling - switchTo()
method throws exception for linux platform.
Exception:
org.openqa.selenium.WebDriverException: invalid argument: 'handle' must be a string
Code trials:
driver.switchTo().window(subWindowHandler);
Its declared as per multiple window handle way:
String subWindowHandler = null;
Set<String> handles = driver.getWindowHandles();
Iterator<String> iterator = handles.iterator();
while (iterator.hasNext()) {
subWindowHandler = iterator.next();
}
This code works perfectly in local windows system.
回答1:
This error message...
org.openqa.selenium.WebDriverException: invalid argument: 'handle' must be a string
...implies that the handle which was passed as an argument needs to be a string.
Logically you are pretty close. Possibly the driver.getWindowHandles()
is getting executed too early even before the second window handle is getting created/recognized.
Solution
As a solution you need to induce WebDriverWait for numberOfWindowsToBe(2)
and you can use the following code block:
String mainWindowHandler = driver.getWindowHandle(); // store mainWindowHandler for future references
//line of code that opens a new TAB / Window
new WebDriverWait(driver, 5).until(ExpectedConditions.numberOfWindowsToBe(2)); //induce WebDriverWait
Set<String> handles = driver.getWindowHandles();
Iterator<String> iterator = handles.iterator();
while (iterator.hasNext())
{
String subWindowHandler = iterator.next();
if (!mainWindowHandler.equalsIgnoreCase(subWindowHandler))
{
driver.switchTo().window(subWindowHandler);
}
}
You can find a relevant detailed discussion in Best way to keep track and iterate through tabs and windows using WindowHandles using Selenium
来源:https://stackoverflow.com/questions/59521551/org-openqa-selenium-webdriverexception-invalid-argument-handle-must-be-a-str