The "tests" are
basic historical methodology. There is not much worst then failing these three basics:
1) Contemporary evidence: Evidence that dates to the time the person or event actually happened.
2) Derivative evidence: Evidence that is known to use contemporary record-evidence that has since been lost.
3) Comparative evidence: Evidence that gives details that can be checked against known factors of the time.
The flaw in this line of reasoning comes up with the King Arthur and Robin Hood stories; as with Jesus their stories were "entirely hearsay from writers who did not themselves know any such details" and by "anonymous writers describing stories from yet more anonymous people of the past".
Yet we have reason to think that King Arthur and Robin Hood legends are based on people who once lived. Why? Because Comparative evidence in the stories can be show to fit known facts of the time the events supposedly took place in ("Robin Hood" or some variant of such being used for outlaw as far back as 1228 and there are several viable candidates for Arthur based on the stories) But no one says that the particular versions of King Arthur and Robin Hood in the stories really existed...but that is what we keep getting with Jesus.
It is time line this I really wish Josh McDowell had not brought the whole legalistic argument to the table;
No historian, historical anthropologist, or general anthropologist looks at history in a legalistic manner. Rather they look at history in a
social scientific manner.
Two Scandinavian textbooks, written by historians regarding source criticism outline the real criteria actually used:
1) Human sources may be relics (e.g. a fingerprint) or narratives (e.g. a statement or a letter). Relics are more credible sources than narratives.
2) A given source may be forged or corrupted; strong indications of the originality of the source increases its reliability.
3) The closer a source is to the event which it purports to describe, the more one can trust it to give an accurate description of what really happened
4) A primary source is more reliable than a secondary source, which in turn is more reliable than a tertiary source and so on.
5) If a number of independent sources contain the same message, the credibility of the message is strongly increased.
6) The tendency of a source is its motivation for providing some kind of bias. Tendencies should be minimized or supplemented with opposite motivations.
7) If it can be demonstrated that the witness (or source) has no direct interest in creating bias, the credibility of the message is increased
You can look at New Testament source criticism (or rather what passes for it) and realize it is basically

its little head into the nearest wall until things make sense.
Most people agree that these letters consist of Romans, 1st Corinthians, 2nd Corinthians, Galatians, Philippians, 1st Thessalonians and Philemon.
Everything else is either pseudepigraphical (Ephesians, 1 and 2 Timothy, and Titus) or were written by Paul's followers after his death (Colossians and 2nd Thessalonians).
And in the part that is thought to be Paul he give you no real details to even
attempt any kind comparative evidence test. It is all vague general stuff that might as well come from a palm reader doing a cold reading.
There is a point people often ignored regarding Paul: 2 Corinthians 11:3-4 (53 to 57 CE). Why is this important? Well look at what Paul is saying (KJV):
"But I fear, lest by any means, as the serpent beguiled Eve through his subtilty, so your minds should be corrupted from the simplicity that is in Christ.
"For if he that cometh
preacheth another Jesus, whom we have not preached, or if ye
receive another spirit, which ye have not received, or
another gospel, which ye have not accepted, ye might well bear with him."
There are several ways to read Paul's comment about another Jesus, another spirit, and another gospel many of which can be seen via the John Frum cult:
1) The proto-Jesus movement was largely directionless until Paul gave his own spin on it; John Frum supposedly dated all the way back to the 1910s but didn't get focused until 1940 with the first of the "John Frums"
2) Paul is trying to push the Jesus cult in a particular direction ala the Prince Philip movement faction and warning against members of the old direction.
3) various people inspired by Paul or others have taken up the name "Jesus" and preached their own versions of the Word; John Frum saw three of these in a seven year period (1940-1947)