How to integrate a third-party testing tool into an existing project?

To integrate a third-party testing tool into an existing project, you need to:

1. Study the tool's documentation to understand how it is launched and interacts with the code.
2. Identify integration points, such as running tests through CI/CD, connecting to the tested application.
3. Add the tool's dependencies to the project (via package manager or manually).
4. Configure configuration files and scripts for running tests.
5. Write or adapt tests to match the tool's format and API.
6. Verify the correctness of execution and reporting.

Example: integrating Jest into a JavaScript project

npm install --save-dev jest

Add a script in package.json:

"scripts": {
  "test": "jest"
}

Then write tests in the tests folder and run with the command npm test."},{