What does a test automation tool do?

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7. Apache JMeter is an open-source tool designed for performance testing and load testing web applications. It simulates multiple users sending requests to a server, measuring how well the server performs under load.

JUnit is mainly used for unit testing in Java applications. It is a widely-used testing framework that helps developers write and run tests to verify that individual parts of their code (called units, typically methods or classes) work correctly.

A test automation tool is software that helps automate the process of testing applications to ensure they work correctly. Instead of manually running tests, these tools execute predefined test scripts automatically, saving time and improving accuracy.

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What a Test Automation Tool Does:

1. Automates Repetitive Testing Tasks
   It runs tests repeatedly without human intervention, which is especially useful for regression testing (checking if new code changes break existing features).

2. Simulates User Actions
   It can mimic how users interact with the application—clicking buttons, entering data, navigating pages, etc.—to verify the app behaves as expected.

3. Validates Outputs
   It checks whether the results of operations match the expected outcomes (like verifying text on a page or data in a database).

4. Generates Test Reports
   After running tests, it creates detailed reports showing which tests passed or failed, helping developers quickly identify problems.

5. Supports Different Testing Types
   These tools can be used for functional testing, performance testing, API testing, and more.

6. Integrates with Development Tools
   They often integrate with continuous integration (CI) systems, enabling automatic testing every time code is updated.

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