In tests that I write, if I want to assert a WebElement is present on the page, I can do a simple:
driver.findElement(By.linkText("Test Search"));
This will pass if it exists and it will bomb out if it does not exist. But now I want to assert that a link does not exist. I am unclear how to do this since the code above does not return a boolean.
EDIT This is how I came up with my own fix, I'm wondering if there's a better way out there still.
public static void assertLinkNotPresent (WebDriver driver, String text) throws Exception {
List<WebElement> bob = driver.findElements(By.linkText(text));
if (bob.isEmpty() == false) {
throw new Exception (text + " (Link is present)");
}
}
Not Sure which version of selenium you are referring to, however some commands in selenium * can now do this: http://release.seleniumhq.org/selenium-core/0.8.0/reference.html
- assertNotSomethingSelected
- assertTextNotPresent
Etc..
It's easier to do this:
driver.findElements(By.linkText("myLinkText")).size() < 1
I think that you can just catch org.openqa.selenium.NoSuchElementException
that will be thrown by driver.findElement
if there's no such element:
import org.openqa.selenium.NoSuchElementException;
....
public static void assertLinkNotPresent(WebDriver driver, String text) {
try {
driver.findElement(By.linkText(text));
fail("Link with text <" + text + "> is present");
} catch (NoSuchElementException ex) {
/* do nothing, link is not present, assert is passed */
}
}
There is an Class called ExpectedConditions
:
By loc = ...
Boolean notPresent = ExpectedConditions.not(ExpectedConditions.presenceOfElementLocated(loc)).apply(getDriver());
Assert.assertTrue(notPresent);
With Selenium Webdriver would be something like this:
assertTrue(!isElementPresent(By.linkText("Empresas en Misión")));
Try this -
private boolean verifyElementAbsent(String locator) throws Exception {
try {
driver.findElement(By.xpath(locator));
System.out.println("Element Present");
return false;
} catch (NoSuchElementException e) {
System.out.println("Element absent");
return true;
}
}
boolean titleTextfield = driver.findElement(By.id("widget_polarisCommunityInput_113_title")).isDisplayed();
assertFalse(titleTextfield, "Title text field present which is not expected");
It looks like findElements()
only returns quickly if it finds at least one element. Otherwise it waits for the implicit wait timeout, before returning zero elements - just like findElement()
.
To keep the speed of the test good, this example temporarily shortens the implicit wait, while waiting for the element to disappear:
static final int TIMEOUT = 10;
public void checkGone(String id) {
FluentWait<WebDriver> wait = new WebDriverWait(driver, TIMEOUT)
.ignoring(StaleElementReferenceException.class);
driver.manage().timeouts().implicitlyWait(1, TimeUnit.SECONDS);
try {
wait.until(ExpectedConditions.numberOfElementsToBe(By.id(id), 0));
} finally {
resetTimeout();
}
}
void resetTimeout() {
driver.manage().timeouts().implicitlyWait(TIMEOUT, TimeUnit.SECONDS);
}
Still looking for a way to avoid the timeout completely though...
You can utlilize Arquillian Graphene framework for this. So example for your case could be
Graphene.element(By.linkText(text)).isPresent().apply(driver));
Is also provides you bunch of nice API's for working with Ajax, fluent waits, page objects, fragments and so on. It definitely eases a Selenium based test development a lot.
For node.js I've found the following to be effective way to wait for an element to no longer be present:
// variable to hold loop limit
var limit = 5;
// variable to hold the loop count
var tries = 0;
var retry = driver.findElements(By.xpath(selector));
while(retry.size > 0 && tries < limit){
driver.sleep(timeout / 10)
tries++;
retry = driver.findElements(By.xpath(selector))
}
Not an answer to the very question but perhaps an idea for the underlying task:
When your site logic should not show a certain element, you could insert an invisible "flag" element that you check for.
if condition
renderElement()
else
renderElementNotShownFlag() // used by Selenium test
Please find below example using Selenium "until.stalenessOf" and Jasmine assertion. It returns true when element is no longer attached to the DOM.
const { Builder, By, Key, until } = require('selenium-webdriver');
it('should not find element', async () => {
const waitTime = 10000;
const el = await driver.wait( until.elementLocated(By.css('#my-id')), waitTime);
const isRemoved = await driver.wait(until.stalenessOf(el), waitTime);
expect(isRemoved).toBe(true);
});
For ref.: Selenium:Until Doc
findElement will check the html source and will return true even if the element is not displayed. To check whether an element is displayed or not use -
private boolean verifyElementAbsent(String locator) throws Exception {
boolean visible = driver.findElement(By.xpath(locator)).isDisplayed();
boolean result = !visible;
System.out.println(result);
return result;
}
For appium 1.6.0 and above
WebElement button = (new WebDriverWait(driver, 10).until(ExpectedConditions.presenceOfElementLocated(By.xpath("//XCUIElementTypeButton[@name='your button']"))));
button.click();
Assert.assertTrue(!button.isDisplayed());
来源:https://stackoverflow.com/questions/3283310/assert-that-a-webelement-is-not-present-using-selenium-webdriver-with-java