what are the requrements for application testing?
 

what are the main things and requirements that a application security testing needs?

If you want to do the testing of your application then you need to know coding if you are doing it manual. You can use software if you don't have much knowledge about everything. It is important for us that we should check application security requirements before doing application testing so that we can do the testing in a better way.

About this issues, there're a bunch of tools which are very helpful in a specific way.
The first tool you can try out is Static Application Security Testing tools (SAST) - which will help you analyze the application's code before complication. That would mean you can detect all your security vulnerabilities very early, which is a cheap and easier solution for fixing security's flaws.
Or you can give Dynamic Application Security Testing (DAST) a look. The difference between the 2 tools is that DAST examines the application while it's running. For run-time issues, this is the best.