RF EXECUTE JAVASCRIPT Without any arguments

Introduction

In Robot Framework, the Execute JavaScript keyword allows executing custom JavaScript code during test execution. This keyword is extremely useful when there is a need to perform complex operations or manipulate the web page directly. One interesting aspect of this keyword is that it can be used without any arguments, which gives us the flexibility to execute predefined JavaScript functions or scripts.

This article will discuss the concept of executing JavaScript without any arguments in Robot Framework. We will explore how to leverage this feature and provide a step-by-step guide to demonstrate its usage with code examples.

Prerequisites

Before proceeding, make sure you have the following installed:

  • Robot Framework (version 3.x or later)
  • SeleniumLibrary (version 4.x or later)

You can install these libraries using pip:

pip install robotframework
pip install robotframework-seleniumlibrary

Understanding the Execute JavaScript Keyword

The Execute JavaScript keyword is part of the SeleniumLibrary in Robot Framework. It allows executing arbitrary JavaScript code in the browser context. The code can manipulate the web page, access and modify variables, and perform various operations.

The basic syntax of the Execute JavaScript keyword is as follows:

Execute JavaScript    javascriptCode

Here, javascriptCode refers to the JavaScript code that you want to execute. This code can be a single line or a multiline script.

Executing JavaScript Without Any Arguments

When the Execute JavaScript keyword is used without any arguments, it allows executing predefined JavaScript functions or scripts that are already present on the web page. This can be useful when you want to interact with or retrieve information from the web page directly.

To execute JavaScript without any arguments, follow these steps:

  1. Open the web page in the browser using the Open Browser keyword.
  2. Use the Execute JavaScript keyword with an empty argument.

Here is an example that demonstrates executing JavaScript without any arguments to retrieve the page title:

*** Settings ***
Library    SeleniumLibrary

*** Test Cases ***
Execute JavaScript Without Arguments
    Open Browser        chrome
    ${title}    Execute JavaScript    return document.title
    Log    The page title is: ${title}
    Close Browser

In this example, we open the " web page using the Chrome browser. Next, we execute JavaScript using the Execute JavaScript keyword without any arguments. The JavaScript code return document.title retrieves the page title. We store the result in a variable ${title} and log it using the Log keyword. Finally, we close the browser.

Real-World Example

Let's consider a real-world example where we want to retrieve all the links on a web page using JavaScript without any arguments. Here is the step-by-step guide:

  1. Open the web page.
  2. Execute JavaScript without any arguments to retrieve all the links.
  3. Store the links in a variable.
  4. Log the links.
  5. Close the browser.

Here is the example code:

*** Settings ***
Library    SeleniumLibrary

*** Test Cases ***
Retrieve Links Using JavaScript Without Arguments
    Open Browser        chrome
    ${links}    Execute JavaScript    var links = document.getElementsByTagName('a');
    var linkArray = [];
    for (var i = 0; i < links.length; i++) {
        linkArray.push(links[i].getAttribute('href'));
    }
    return linkArray;
    Log    The links on the page are: ${links}
    Close Browser

In this example, we open the " web page using the Chrome browser. Next, we execute JavaScript without any arguments to retrieve all the links on the page. The JavaScript code iterates through all the anchor (<a>) tags and retrieves the href attribute for each link. We store the links in a variable ${links} and log them using the Log keyword. Finally, we close the browser.

Conclusion

The Execute JavaScript keyword without any arguments is a powerful feature in Robot Framework. It allows executing predefined JavaScript functions or scripts on a web page, providing flexibility and control during test automation. This article provided an introduction to executing JavaScript without any arguments, explained the basic syntax of the Execute JavaScript keyword, and demonstrated its usage with code examples.

By leveraging the Execute JavaScript keyword without any arguments, you can perform complex operations, manipulate the web page, and retrieve information from the browser context. This feature enhances the capabilities of Robot Framework and enables more advanced web automation scenarios.

Remember to explore the documentation of SeleniumLibrary and JavaScript to discover more possibilities and unleash the full potential of Robot Framework in your test automation projects.

Happy testing!