{"id":96837,"date":"2019-08-30T13:00:36","date_gmt":"2019-08-30T10:00:36","guid":{"rendered":"https:\/\/www.javacodegeeks.com\/?p=96837"},"modified":"2019-08-28T13:35:40","modified_gmt":"2019-08-28T10:35:40","slug":"selenium-waits-implicit-explicit-fluent-sleep","status":"publish","type":"post","link":"https:\/\/www.javacodegeeks.com\/2019\/08\/selenium-waits-implicit-explicit-fluent-sleep.html","title":{"rendered":"Selenium Waits: Implicit, Explicit, Fluent And Sleep"},"content":{"rendered":"

Selenium waits for page load play an important part in your Selenium scripts. They help to make them less flaky and more reliable. Selenium provides multiple waits to provide adequate wait or pause in your script execution based on certain conditions. Thereby ensuring you don\u2019t end up getting failed scripts as you perform automation testing with Selenium<\/a>. In this tutorial, we will be explaining the types of Selenium waits and sleep, there real-time examples and a comparison study on them. Let us start by answering a pivotal question \u201cWhy should we use Selenium waits?\u201d<\/p>\n

Why Do We Need Selenium Waits?<\/h2>\n

Majority of modern application\u2019s front-end is built on JavaScript or Ajax, using frameworks such as React, Angular, or any other which takes a certain time for the web elements to load on the page, whenever that page is loaded or refreshed. Hence, in case you tend to locate an element in your script which is yet to load on the page, selenium will throw you \u2018ElementNotVisibleException<\/strong>\u2019 message.<\/p>\n

Below code snippet will help you showcase the same problem as you execute automation testing with Selenium. In this code snippet, I am using an example of easemytrip.com, where post user selects the \u2018From\u2019 and \u2018To\u2019 destination with a date of journey, the web application takes a certain time to load the required flight details. In this case, without applying wait, the user tends to book the first flight from the list. Now, since the page hasn\u2019t loaded yet, the script failed to find the \u2018book now\u2019 button. Resulting in throwing a \u2018NoSuchElementException<\/strong>\u2019. Code snippet and console output below:<\/p>\n

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import<\/code> java.util.concurrent.TimeUnit;<\/code><\/div>\n
 <\/code> <\/div>\n
import<\/code> org.openqa.selenium.By;<\/code><\/div>\n
import<\/code> org.openqa.selenium.JavascriptExecutor;<\/code><\/div>\n
import<\/code> org.openqa.selenium.Keys;<\/code><\/div>\n
import<\/code> org.openqa.selenium.WebDriver;<\/code><\/div>\n
import<\/code> org.openqa.selenium.chrome.ChromeDriver;<\/code><\/div>\n
 <\/code> <\/div>\n
import<\/code> com.gargoylesoftware.htmlunit.javascript.background.JavaScriptExecutor;<\/code><\/div>\n
 <\/code> <\/div>\n
public<\/code> class<\/code> NoWaitImplemented {<\/code><\/div>\n
 <\/code> <\/div>\n
    <\/code>public<\/code> static<\/code> void<\/code> main(String[] args) <\/code>throws<\/code> InterruptedException {<\/code><\/div>\n
        <\/code> <\/div>\n
        <\/code>System.setProperty(<\/code>\"webdriver.chrome.driver\"<\/code>, <\/code>\".\\\\Driver\\\\chromedriver.exe\"<\/code>);<\/code><\/div>\n
        <\/code> <\/div>\n
        <\/code>WebDriver driver=<\/code>new<\/code> ChromeDriver();<\/code><\/div>\n
        <\/code> <\/div>\n
        <\/code>driver.manage().window().maximize();<\/code><\/div>\n
        <\/code> <\/div>\n
        <\/code> <\/div>\n
        <\/code>driver.get(<\/code>\"https:\/\/www.easemytrip.com\/<\/a>\"<\/code>);<\/code><\/div>\n
        <\/code> <\/div>\n
        <\/code>driver.findElement(By.id(<\/code>\"FromSector_show\"<\/code>)).sendKeys(<\/code>\"Delhi\"<\/code>, Keys.ENTER);<\/code><\/div>\n
        <\/code>driver.findElement(By.id(<\/code>\"Editbox13_show\"<\/code>)).sendKeys(<\/code>\"Mumbai\"<\/code>, Keys.ENTER);<\/code><\/div>\n
        <\/code>driver.findElement(By.id(<\/code>\"ddate\"<\/code>)).click();<\/code><\/div>\n
        <\/code>driver.findElement(By.id(<\/code>\"snd_4_08\/08\/2019\"<\/code>)).click();<\/code><\/div>\n
        <\/code>driver.findElement(By.className(<\/code>\"src_btn\"<\/code>)).click();<\/code><\/div>\n
        <\/code>driver.findElement(By.xpath(<\/code>\"\/\/button[text()='Book Now']\"<\/code>)).click();<\/code><\/div>\n
    <\/code> <\/div>\n
        <\/code> <\/div>\n
        <\/code> <\/div>\n
        <\/code> <\/div>\n
 <\/code> <\/div>\n
    <\/code>}<\/code><\/div>\n
 <\/code> <\/div>\n
}<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
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\"\"<\/figure>\n<\/div>\n

Console Output:<\/strong><\/p>\n

I have made use of XPath for locating web elements using the scripts for automation testing with Selenium.<\/p>\n

Read More: Complete Guide For Using XPath In Selenium With Examples <\/a><\/p>\n

Selenium wait for a page to load helps in resolving this issue. There are different types of Selenium waits like Implicit wait and Explicit wait, that ensures the elements are loaded into the page before they are discovered by the Selenium script<\/a> for further actions.<\/p>\n

Types of Selenium Waits For Page Load<\/h2>\n

When performing automation testing with Selenium, we use the following types of waits as we generate our Selenium script:<\/p>\n