Python Automation Testing Using Pytest: A Beginner’s Guide

#Python Automation Testing Using Pytest: A Beginner’s Guide | 来源: 网络整理| 查看: 265

Are you tired of spending countless hours testing your code manually? Do you wish there was a way to automate your testing process and save yourself time and effort? If so, you’re in luck! Python automation testing using pytest is a great solution that can help you streamline your testing process and catch any bugs or issues before they become a problem.

Image by mohamed_hassan from pixabay

In this beginner’s guide, we’ll introduce you to Python automation testing using pytest, explain how it works, and provide you with step-by-step instructions on how to get started.

What is Python Automation Testing?

Python automation testing is the process of using automated tools to test software code. This involves writing scripts or programs that simulate user interactions with the software and verify that the software behaves as expected. The goal of automation testing is to improve the efficiency and effectiveness of software testing, while also reducing the time and cost associated with manual testing.

Why Use Pytest for Automation Testing?

Pytest is a powerful Python testing framework that makes it easy to write and execute automated tests. It offers a wide range of features and benefits that make it an ideal choice for automation testing, including:

Simple syntax: Pytest has a simple and easy-to-understand syntax that makes it easy to write and execute tests.Extensibility: Pytest is highly extensible and can be easily customized to suit the specific needs of your testing environment.Fixtures: Pytest offers a fixture mechanism that allows you to define a set of preconditions that must be met before a test can be executed. This makes it easy to set up and tear down test environments.Parameterization: Pytest supports parameterization, which allows you to run the same test with different inputs and expected outputs. This makes it easy to test multiple scenarios with a single test.Test discovery: Pytest automatically discovers and executes all tests in a specified directory, making it easy to run all your tests with a single command.Passing TestcasesHow to Get Started with Pytest?

Now that you understand the benefits of using Pytest for automation testing, let’s dive into the steps to get started:

Step 1: Install Pytest

The first step is to install Pytest. You can do this using pip, the package installer for Python. Open a command prompt and enter the following command:

pip install pytest

This will install Pytest and all its dependencies.

Step 2: Write a Test

The next step is to write a test. Create a new Python file and name it test_hello.py. Add the following code:

def test_hello(): assert "hello" == "hello"

This is a very simple test that checks if the string “hello” is equal to “hello”. It uses the Pytest assertion mechanism to perform the check.

Step 3: Run the Test

The final step is to run the test. Open a command prompt and navigate to the directory where the test_hello.py file is located. Enter the following command:

pytest

This will run all the tests in the current directory. You should see output similar to the following:

============================= test session starts =============================platform win32 -- Python 3.7.2, pytest-4.0.2, py-1.7.0, pluggy-0.8.0rootdir: C:\Users\User\Documents\pytest, inifile:collected 1 item

test_hello.py . [100%]

========================== 1 passed in 0.03 seconds ==========================

This output indicates that the test passed successfully.

Conclusion

Automation testing using Python tools has revolutionized the way we release our products to the markets and it has improved quality of code.

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