[PATCH] Test for recent rev-parse $abbrev_sha1 regression

["Shawn O. Pearce" <spearce@spearce.org>]

My recent patch "Lazily open pack index files on demand" caused a
regression in the case of parsing abbreviated SHA-1 object names.
Git was unable to translate the abbreviated name into the full name
if the object was packed, as the pack .idx files were not opened
before being accessed.

This is a simple test to repack a repository then test for an
abbreviated SHA-1 within the packfile.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
---
 t/t6101-rev-parse-parents.sh |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/t/t6101-rev-parse-parents.sh b/t/t6101-rev-parse-parents.sh
index 7d354a1..b0252b9 100755
--- a/t/t6101-rev-parse-parents.sh
+++ b/t/t6101-rev-parse-parents.sh
@@ -29,5 +29,15 @@ test_expect_success 'final^1^3 not valid' "if git-rev-parse --verify final^1^3;
 test_expect_failure '--verify start2^1' 'git-rev-parse --verify start2^1'
 test_expect_success '--verify start2^0' 'git-rev-parse --verify start2^0'
 
+test_expect_success 'repack for next test' 'git repack -a -d'
+test_expect_success 'short SHA-1 works' '
+	start=`git rev-parse --verify start` &&
+	echo $start &&
+	abbrv=`echo $start | sed s/.\$//` &&
+	echo $abbrv &&
+	abbrv=`git rev-parse --verify $abbrv` &&
+	echo $abbrv &&
+	test $start = $abbrv'
+
 test_done
 
-- 
1.5.2.869.g6b3ba