Does PageSpeed ​​work with a non-indexed test site?

Question

Search Engine Optimization

Hello.
A newbie has a question. Didn't find an answer.
I want to try to make my own website on WordPress. Take the theme as the basis of the template and change the code there as I want.
Including plans to try different themes in order to find out how things are with the speed of loading the site and compare.
I will do it on a technical free domain allocated to me on reg.ru hosting.
This site may be used and moved to a non-test domain in the future. Therefore, I want to hide the test domain from search engines.
I read that there are 3 measures:
1. In robots.txt
2. Meta tags in the head
3. authentication by ip or some
Allegedly, the first 2 do not guarantee the result, because if a link to my test domain appears somewhere on the Internet, then these measures may not help.

The question is.
Will I be able to check the speed in the PageSpeed ​​tool from Google if the sites are closed from indexing. In particular, only 1m and 2m method. Wouldn't this just be a reason to get around this ban on indexing and eventually index the site.
And in particular the 3rd method. After all, additional authentication will affect the speed, or even not allow you to download at all.

Thanks in advance guys.

Answer 1

Hello.

Will I be able to check the speed in the PageSpeed ​​tool from Google if the sites are closed from indexing.

You can, if there is no prohibition of access by IP and / or Basic Auth (and similar measures). In principle, you can make a more complex version that allows the user agent Google Pagespeed (Chrome-Lighthouse * , if they haven’t changed something again) to access the site, and block the search bot of the same Google.
* - Mozilla/5.0 <...> Chrome/XX.X.XXXX.X <...> Chrome-Lighthouse
Previously, the GPSI user agent looked something like this: Mozilla/5.0 <...> (<...> ; Google Page Speed ​​Insights ) Chrome/XX.X.XXXX.X <...>. But this format is outdated.
The robots.txt file is sometimes ignored by PS bots, so I would not recommend it, as well as meta tags.

Answer 2

Just run an audit in Chrome on the local version - it's the same.