The Importance of Selenium Events and Patience

Question

The Importance of Selenium Events and Patience

Currently, I am using Selenium to automate some testing for our company's website, but encountering issues along the way.

TestItemFromSearch: (driver, part, qty) => {
    Search.SearchItem(driver, part);
    driver.findElement(By.id('enterQty')).findElement(By.tagName('input')).sendKeys(qty); 
    driver.findElement(By.linkText('Personalize')).click();
    //This redirects to a new page.
    driver.wait(() => {
    }, 1000).then(() => {
        }, //TODO: This sucks. Fix it.
        Login.Login(driver, Logins.username, Logins.password));
    driver.findElement(By.className('selectDesignButton')).click();
}

At times, when Selenium is directed to a new page, I have to employ the wait function. However, regardless of the condition I set, it fails to find that condition and results in failure. To tackle this, I have resorted to using the Reject method to execute desired actions (like Login.Login).

I might need to repeat this process within the same test as it navigates through multiple pages, leading to messy and unreadable code.

How can I make Selenium properly wait? If I use the following:

driver.wait(()=>{}, 1000)

it ends up waiting indefinitely. Even if I add a return statement, it instantly fails without waiting at all.

javascript selenium

Answer 1

Answer №1

For effective waiting, it is recommended to utilize an explicit wait method instead of an implicit one. There are various approaches you can take:

WebDriverWait wait = new WebDriverWait(driver, timeOut);
wait.until(ExpectedConditions.elementToBeClickable(locator));

Another option is to implement a fluentWait for more flexibility:

public WebElement fluentWait(final By locator) {
Wait<WebDriver> wait = new FluentWait<WebDriver>(driver)
        .withTimeout(30, TimeUnit.SECONDS)
        .pollingEvery(5, TimeUnit.SECONDS)
        .ignoring(NoSuchElementException.class);

WebElement element = wait.until(new Function<WebDriver, WebElement>() {
    public WebElement apply(WebDriver driver) {
        return driver.findElement(locator);
    }
}); return  element; };

Both methods are effective, but personally, I prefer using fluentWait due to the ability to customize the following:

Frequency of checking conditions defined by FluentWait.
Types of exceptions to ignore during the wait, such as NoSuchElementExceptions.
Maximum wait time for a condition to be met.

Give this approach a try:

driver.wait(function() {
    return driver.findElement(locator).isDisplayed();
}, timeout);

Answer 2

For effective waiting, it is recommended to utilize an explicit wait method instead of an implicit one. There are various approaches you can take:

WebDriverWait wait = new WebDriverWait(driver, timeOut);
wait.until(ExpectedConditions.elementToBeClickable(locator));

Another option is to implement a fluentWait for more flexibility:

public WebElement fluentWait(final By locator) {
Wait<WebDriver> wait = new FluentWait<WebDriver>(driver)
        .withTimeout(30, TimeUnit.SECONDS)
        .pollingEvery(5, TimeUnit.SECONDS)
        .ignoring(NoSuchElementException.class);

WebElement element = wait.until(new Function<WebDriver, WebElement>() {
    public WebElement apply(WebDriver driver) {
        return driver.findElement(locator);
    }
}); return  element; };

Both methods are effective, but personally, I prefer using fluentWait due to the ability to customize the following:

Frequency of checking conditions defined by FluentWait.
Types of exceptions to ignore during the wait, such as NoSuchElementExceptions.
Maximum wait time for a condition to be met.

Give this approach a try:

driver.wait(function() {
    return driver.findElement(locator).isDisplayed();
}, timeout);

Answer 3

Answer №2

It is recommended to utilize the selenium driver's WaitForElementPresent or WaitForElementVisible functions before engaging with elements on the webpage. The selenium driver monitors the DOM and confirms the existence or visibility of each element. Once these validations are successful, it is advisable to proceed with interacting with the page for additional testing purposes.

Answer 4

It is recommended to utilize the selenium driver's WaitForElementPresent or WaitForElementVisible functions before engaging with elements on the webpage. The selenium driver monitors the DOM and confirms the existence or visibility of each element. Once these validations are successful, it is advisable to proceed with interacting with the page for additional testing purposes.

Answer 5

Answer №3

Perhaps this solution could be of assistance: utilizing an "async function ()"

let nameButton = By.linkText('Personalize');
await driver.wait(async function () {
    return until.elementIsVisible(nameButton);
}, 20000).then(() => {console.log("element visible")})
button = await button.findElement(nameButton).then(()=>{ console.log("found element")})
await button.click().then(()=>{ console.log("I clicked the button")})

Answer 6

Perhaps this solution could be of assistance: utilizing an "async function ()"

let nameButton = By.linkText('Personalize');
await driver.wait(async function () {
    return until.elementIsVisible(nameButton);
}, 20000).then(() => {console.log("element visible")})
button = await button.findElement(nameButton).then(()=>{ console.log("found element")})
await button.click().then(()=>{ console.log("I clicked the button")})

The Importance of Selenium Events and Patience

Answer №1

Answer №2

Answer №3

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