[PATCH] rewrite t1500-rev-parse.sh

I was working on a simple bug fix[1], and I wanted to add a test to t1500. I put the new test at the beginning rather than try to decipher what state the test run would be in at the end. In the review, Eric Sunshine described the test:

I decided to rewrite this test in (what I hope is) the modern test format. In doing so, I expanded the size of the test file greatly, but I think it is much clearer to read and understand as you go through it. This also has the advantage of allowing a tester to use verbose options when testing. As noted in the commit comment, tests which compare text (rather than booleans) were also adjusted to use the test_cmp function.

This patch is based on 'pu' because of a feature to add `--absolute-git-dir` to rev-parse[2].

I considered including this patch as the first commit in the aforementioned bug fix, but I wanted to get it out for review to make sure that it is acceptible.

[1]http://thread.gmane.org/gmane.comp.version-control.git/290669 [2]http://article.gmane.org/gmane.comp.version-control.git/287462

Michael Rappazzo (1):
  t1500-rev-parse: rewrite each test to run in isolation

 t/t1500-rev-parse.sh | 607 +++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 545 insertions(+), 62 deletions(-)