New testing way

[m7medVision]

This pull request introduces a new approach to testing. It involves creating a .js file for each test case.

To create a test case, you need to create a file in the following location: ./testcases/[slug].js. This code will be injected into the Editor.tsx file, which means you can utilize the code variable and perform any necessary operations.

After conducting the test, you should update the isPass variable to either true or false depending on the test result, and provide a relevant message in the msg variable.

This new testing methodology provides a more flexible and comprehensive way to validate code.

There are examples in testcases folder .