Regression testing

Overview

Regression testing is essential to maintaining your API’s overall quality and performance. Use this template to run a series of tests that validate different aspects of your API and ensure everything is still intact post changes or updates.

What is regression testing?

Regression testing is a critical software testing technique used to validate that recent changes, updates, or enhancements to an application or API do not negatively impact existing functionalities. It involves re-running a series of test cases to ensure that the modified code works correctly alongside the other parts of the application and does not introduce new bugs or defects. In the context of API testing, regression testing refers to the process of verifying that changes or updates made to an API or its environment do not affect its existing functionality. These changes include fixing a bug, adding a new feature, or improving the API's performance.

What is the regression testing template?

The regression testing template is a pre-configured blueprint designed to help quality engineers and backend or fullstack developers perform API regression testing with ease. It helps you streamline the testing process by providing reusable scripts for pre-defined test cases that you can use to verify the integrity and functionality of an API after making changes.

What does the regression testing template contain?

The regression testing template contains a collection of sample test cases to address common regression testing scenarios, including:

• Status code verification:

  Verifying that the API returns the expected HTTP status codes for different requests.

• JSON schema response validation:

  Validating that the API responses adhere to the specified JSON schema.

• Custom response validation:

  Performing custom validation checks on API responses to ensure data accuracy and consistency.

• Response time verification:

  Verifying the response time of the API to ensure it meets performance expectations.

• Header verification:

  Ensuring that the API responses include the correct headers with the expected values.

How to perform API regression testing with the template?

You can follow these steps to perform API regression testing using the template: Step 1. Understand the template: Familiarize yourself with the contents and purpose of the template. Read the documentation and guidelines provided. Step 2. Set up a testing environment (optional): Create an environment with the necessary configurations, such as API endpoints, authentication details, and environment variables. Step 3. Customize the template: Tailor the pre-configured test cases within the template to suit your API endpoints, data, and specific testing requirements. Step 4. Add data-driven tests: To enhance the test coverage, consider adding data-driven tests by adding datasets that represent different scenarios, edge cases, or expected outcomes to validate the API's behavior under various conditions. Step 5. Execute the tests: Run the customized test cases to verify that the API functions correctly after any changes or updates. Step 6. Handle test failures: In case of test failures, promptly investigate and address the root cause of the issues. Update the test cases as needed to reflect changes in the API or to accommodate new requirements. Step 7. Schedule test runs (optional): Schedule the regression test suite to run automatically at regular intervals or after code changes. Frequent test execution helps catch any regressions early and ensures the API's stability throughout the development process.