Jonik Jonik - 3 years ago 202
Java Question

Temporarily bypassing implicit waits with WebDriver

When using implicit waits, as advised here, I still sometimes want to assert the immediate invisibility or non-existence of elements.

In other words, I know some elements should be hidden, and want my tests make that assertion fast, without spending several seconds because of the (otherwise useful) implicit wait.

One thing I tried was a helper method like this:

// NB: doesn't seem to do what I want
private boolean isElementHiddenNow(String id) {
WebDriverWait zeroWait = new WebDriverWait(driver, 0);
ExpectedCondition<Boolean> c = invisibilityOfElementLocated(By.id(id));
try {
zeroWait.until(c);
return true;
} catch (TimeoutException e) {
return false;
}
}


But in the above code, the call to
until()
only returns after the implicit wait time has passed, i.e., it doesn't do what I wanted.

This is the only way I've found so far that works:

@Test
public void checkThatSomethingIsNotVisible() {
turnOffImplicitWaits();
// ... the actual test
turnOnImplicitWaits();
}


... where e.g.
turnOffImplicitWaits()
is a helper in common Selenium superclass:

protected void turnOffImplicitWaits() {
driver.manage().timeouts().implicitlyWait(0, TimeUnit.SECONDS);
}


But that is not very elegant, I think. Is there any cleaner way to bypass the implicit wait occasionally?

Answer Source

Given that Selenium doesn't seem to offer what I want directly (based on what Mike Kwan and Slanec said), this simple helper method is what I went with for now:

protected boolean isElementHiddenNow(String id) {
    turnOffImplicitWaits();
    boolean result = ExpectedConditions.invisibilityOfElementLocated(By.id(id)).apply(driver);
    turnOnImplicitWaits();
    return result;
}

private void turnOffImplicitWaits() {
    driver.manage().timeouts().implicitlyWait(0, TimeUnit.SECONDS);
}

private void turnOnImplicitWaits() {
    driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
}

If the element is hidden or not present at all, the method returns true; if it is visible, returns false. Either way, the check is done instantly.

Using the above is at least much cleaner than littering the test cases themselves with calls to turnOffImplicitWaits() and turnOnImplicitWaits().

See also these answers for fined-tuned versions of the same approach:

Recommended from our users: Dynamic Network Monitoring from WhatsUp Gold from IPSwitch. Free Download