Assertions with info about which class/property is invalid

[arjanfrans]

I have extended webmozart/assert's code for my use case in which I want to know more detailed information about assertions. I do assertions inside my entities and would always like to know which entity and which property is invalid.

The implementation looks like this:

// Pass a string as "root" identifier 
            Assert::that('User', 'name', $nameValue)
                ->startsWith('Test')
                ->notEmpty();


// Or pass the object
            Assert::that($user, 'name', $nameValue)
                ->startsWith('Test')
                ->notEmpty();

As you can see, I implemented an "assertion chain" here as well to avoid repeating the ::that(..) call.

Is this something that you can imagine being integrated into this library, or is this use case too specific? If yes, I'd be open to provide a PR.