To learn more about how the tests work I would like to inspect the code. In this case the X-Frame-Options test.
I am using ZAP 2.4.0.
The test identifies that the X-Frame-Options header is not set. This is a correct finding.
However, it only finds it on *.css and *.js file responses. The files that contain html are not listed in the results of this test. However on the html pages the X-Frame-Options header is also missing. That makes me wonder what the test is doing. Is it looking for a combination of headers?
To increase my understanding I would like to look through the test code. I know the code is on GitHub, but where do I navigate to to find the code of each test?