Well, it IS possible to delineate heterosexuals from those with homosexuality. It's just not socially "cool" to engage in that process, unless someone is engaged in the behvior itself, as to homosexuality.
So, yes, there IS "a test for the homosexual condition" and it's called confession. A "test" in the truest sense in that a person seeking ordination as a Priest, we should all hope, would be interested in that level of confession and not emotionally offput or even aggressively offended by the idea that there was anything to confess.
Are you defending homosexuality based upon the assumption that there's no way to 'tell' who is what? It sounds as if you are from much that you've written.
There are some studies that show on autopsy that males who engage in homosexual activity have undergone organic brain changes but so far all that I've read about it is that it's impossible to know whether the changes occured over time as a result of the behaviors (most think so) or that they are males born with brain variations from other males. And, since the studies rely on studying organic changes after persons are deceased, there are obvious problems of what information can be evaluated.
However, the issue is homosexuality being unacceptable to what the Church requires. And especially for the Priesthood. I hope that those who are ordained and actually admitted to Seminaries are those who are not under those influences. The suggestion that homosexuality is fine as long as someone doesn't discuss it and/or does not engage in sexual contact with other homosexuals is the issue here. It's not fine.
There are questions and personal statements that can be asked and revealed that are more than test enough, if such test is necessary, to state the obvious. But, it's not a case of testing and who can escape revealing what, but of the thing itself here in relationship to the Priesthood.
I am exiting this thread because (1.) I am very sleepy and tired and (2.) I recall you persisting at an earlier time with my comments about this along similar lines and what I get from your comments is that you are accommodating homosexuality in the Priesthood, for some reason.
Not to pry but I have no more energy nor interest at this point in maintaining a dialogue with you about this. Have a nice day.