What is an automated test script?

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Thomas KowalskiThomas Kowalski

Testing has become a fundamental part of modern application development, enhancing software quality and security by detecting bugs early. Automation has improved these advantages by increasing test speed and efficiency, enabling more thorough and frequent testing, and reducing human error.

What is an automated test script?

Automated test scripts are a set of instructions used to automate the testing of a system or application. These scripts are designed to interact with the software application being tested, performing specific tasks like navigating between screens, entering user credentials, and submitting a form to test application functionality, performance, and security.

You can use specialized testing frameworks like Selenium, JUnit, Cypress, or CodiumAI to generate automated test scripts. These scripts can be run as part of CI/CD pipelines to ensure that new changes do not break existing functionality. Automated test scripts are particularly useful in large-scale software development projects where manual testing would require significant time and effort.

Why Do We Need Automated Test Scripts?

  • Time efficiency: Manual testing is time-consuming, especially when testing repetitive tasks or large datasets. Automation testing scripts can execute tests much faster, freeing time for more complex and creative tasks.
  • Increased coverage: Automation testing allows for testing a wider range of scenarios, including edge and corner cases, which may be difficult or impossible to test manually.
  • Improved accuracy: Reduces the likelihood of human error.
  • Cost savings: Automation testing can reduce costs by reducing the time spent on testing.
  • Faster feedback: Provides quick feedback on the system’s quality, allowing developers to identify and fix issues earlier in the development cycle.

How Automated Test Scripts Work

Automated test scripts work by executing a predefined sequence of actions to verify the behavior of an application. Here’s a general outline of how automated test scripts operate:

Step 1: Identify and Navigate – Identify the specific elements within the software’s user interface (UI) that it needs to interact with, such as buttons, text fields, and menus.

from selenium import webdriver

driver = webdriver.Chrome()
login_button = driver.find_element_by_id('login')

Step 2: Simulate User Actions – Simulate user actions like clicking buttons, entering text, or selecting options from drop-down menus.

username_field = driver.find_element_by_id('username')
username_field.send_keys('[email protected]')

Step 3: Verify Expected Outcomes – Verify if the application behaves as expected. This might involve checking for displayed text, data changes, or specific functionalities working correctly.

assert "Welcome" in driver.title

Step 4: Report Results – Once the script finishes executing, it generates a report summarizing its findings. This report details whether each test case passed or failed, along with any error messages.

if "Welcome" in driver.title:
    print("Test Passed")
    print("Test Failed")

Advantages of Test Scripts

  • They can execute test cases much faster than manual testing.
  • They can cover many test cases, including those that are difficult or impossible to perform manually.
  • They perform tests the same way every time, reducing the risk of human error.
  • They can be reused for regression testing.
  • They can be run on multiple machines and environments simultaneously, making them easier to scale.

Disadvantages of Test Scripts:

  • They can be expensive to develop and maintain.
  • They require specialized skills, which can be challenging to find and retain.
  • They may be unable to handle unexpected behavior or changes in the application.
  • They are unsuitable for exploratory testing, relying on testers’ creativity and intuition.

Best Practices of Writing Automated Test Scripts

Writing effective automated test scripts can be challenging. However, following best practices can make the process more efficient and productive.

1. Choose the Right Automation Tool

The automation tool should be compatible with the application under test, support the required testing framework, and provide the necessary features and functionality. Selenium, Appium, and Codium AI are popular automation tools with all these features.

2. Write Clear and Concise Test Cases

Test cases should be clear, concise, and easy to understand. Each test case should have a specific objective and be written in a way that is easy to maintain and update. Test cases should also be independent to avoid any dependencies or conflicts.

3. Use Descriptive Naming Conventions

Use descriptive naming conventions for test cases, steps, and data to help users understand the purpose and identify issues that arise during testing. Descriptive names also make it easier to maintain and update test scripts.

4. Integrate with CI/CD

Integrating test scripts with your CI/CD pipelines can ensure that automated test scripts run regularly and any issues are identified and quickly resolved.


Test automation is a critical part of modern software development. It speeds up delivery while improving security. You can make your automated test scripts even better by choosing the right tool and following key practices like writing clear and short test cases, using proper descriptions, managing your test data well, and integrating with CI/CD pipelines.