Run Selenium Tests With pytest On LambdaTest

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Learn how to run your Python automation testing scripts using pytest on the LambdaTest platform

Table Of Contents

• Pre-requisites
• Run Your First Test
• Local Testing With pytest

Prerequisites

Before you can start performing Python 3 automation testing using pytest, you would need to:

• Install the latest Python build from the official website. We recommend using the latest version.
• Make sure pip is installed in your system. You can install pip from here.
• Download the latest Selenium Client and its WebDriver bindings from the official website. Latest versions of Selenium Client and WebDriver are ideal for running your automation script on LambdaTest Selenium cloud grid.
• Install virtualenv which is the recommended way to run your tests. It will isolate the build from other setups you may have running and ensure that the tests run with the specified versions of the modules.

pip install virtualenv

Installing Selenium Dependencies And Tutorial Repo

Step 1: Clone the LambdaTest’s pytest-selenium-sample repository and navigate to the code directory as shown below:

git clone https://github.com/LambdaTest/pytest-selenium-sample
cd pytest-selenium-sample

Step 2: Create a virtual environment in your project folder the environment name is arbitrary.

virtualenv venv

Step 3: Activate the environment.

source venv/bin/activate

Step 4: Install the required packages from the cloned project directory:

pip install -r requirements.txt

Setting Up Your Authentication

Make sure you have your LambdaTest credentials with you to run test automation scripts. You can get these credentials from the LambdaTest Automation Dashboard or by your LambdaTest Profile.

Step 5: Set LambdaTest Username and Access Key in environment variables.

• For Linux/macOS:

  export LT_USERNAME="YOUR_USERNAME" 
  export LT_ACCESS_KEY="YOUR ACCESS KEY"

  • For Windows:

  set LT_USERNAME="YOUR_USERNAME" 
  set LT_ACCESS_KEY="YOUR ACCESS KEY"

Run Your First Test

Test Scenario: The lt_sample_todo.py sample script tests a simple to-do application with basic functionalities like mark items as done, add items in a list, calculate total pending items etc.

Configuration Of Your Test Capabilities

Step 6: In the python script, you need to update your test capabilities. In this code, we are passing browser, browser version, and operating system information, along with LambdaTest Selenium grid capabilities via capabilities object.

The capabilities object in the above code are defined as:

capabilities = {
        "build": "your build name",
        "name": "your test name",
        "platformName": "Windows 10"
        "browserName": "Chrome",
        "browserVersion": "latest",
}

You can generate capabilities for your test requirements with the help of our inbuilt Desired Capability Generator.

Executing The Test

Step 7: You would need to execute the below command in your terminal/cmd.

pytest -s tests/lt_sample_todo.py

Your test results would be displayed on the test console (or command-line interface if you are using terminal/cmd) and on LambdaTest automation dashboard. LambdaTest Automation Dashboard will help you view all your text logs, screenshots and video recording for your entire automation tests.

Run Your Parallel Tests Using PyTest Framework

To run parallel tests using PyTest, we would have to execute the below command in the terminal:

pytest --workers 2 -s tests/lt_sample_todo.py

Testing Locally Hosted Or Privately Hosted Projects

You can test your locally hosted or privately hosted projects with LambdaTest Selenium grid using LambdaTest Tunnel. All you would have to do is set up an SSH tunnel using tunnel and pass toggle tunnel = True via desired capabilities. LambdaTest Tunnel establishes a secure SSH protocol based tunnel that allows you in testing your locally hosted or privately hosted pages, even before they are live.

Refer our LambdaTest Tunnel documentation for more information.

Here’s how you can establish LambdaTest Tunnel.

Download the binary file of:

• LambdaTest Tunnel for Windows
• LambdaTest Tunnel for macOS
• LambdaTest Tunnel for Linux

Open command prompt and navigate to the binary folder.

Run the following command:

LT -user {user’s login email} -key {user’s access key}

So if your user name is lambdatest@example.com and key is 123456, the command would be:

LT -user lambdatest@example.com -key 123456

Once you are able to connect LambdaTest Tunnel successfully, you would just have to pass on tunnel capabilities in the code shown below :

Tunnel Capability

"tunnel" = true

Tutorials 📙

Check out our latest tutorials on pytest automation testing 👇

• Basics Of The pytest Framework
• Setting Up pytest: Installation And Getting Started
• Pytest testing Using Selenium WebDriver
• Parallel Testing With pytest Selenium
• Parameterization In Selenium pytest
• Automated Browser Testing With Selenium pytest Fixtures
• Executing Multiple Test Cases From Single File
• How To Stop Test Suites After ‘N’ Test Failures
• Generating Test Reports In Selenium pytest

Please refer to our PyTest Tutorial | Selenium With Python | Learn PyTest In 90 minutes | LambdaTest. ▶️

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Documentation & Resources 📚

Visit the following links to learn more about LambdaTest's features, setup and tutorials around test automation, mobile app testing, responsive testing, and manual testing.

• LambdaTest Documentation
• LambdaTest Blog
• LambdaTest Learning Hub

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About LambdaTest

LambdaTest is a leading test execution and orchestration platform that is fast, reliable, scalable, and secure. It allows users to run both manual and automated testing of web and mobile apps across 3000+ different browsers, operating systems, and real device combinations. Using LambdaTest, businesses can ensure quicker developer feedback and hence achieve faster go to market. Over 500 enterprises and 1 Million + users across 130+ countries rely on LambdaTest for their testing needs.

Features

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