From: Charles Bailey <cbailey32@xxxxxxxxxxxxx>
The test for '--abbrev' in t4201-shortlog.sh assumes that the commits
generated in the test can always be uniquely abbreviated to 5 hex digits
but this is not always the case. If you were unlucky and happened to run
the test at (say) Thu Jun 22 03:04:49 2017 +0000, you would find that
the first commit generated would collide with a tree object created
later in the same test.
This can be simulated in the version of t4201-shortlog.sh prior to this
commit by setting GIT_COMMITTER_DATE and GIT_AUTHOR_DATE to 1498100689
after sourcing test-lib.sh.
Change the test to test --abbrev=35 instead of --abbrev=5 to almost
completely avoid the possibility of a partial collision and add a call
to test_tick in the setup to make the test repeatable.
Signed-off-by: Charles Bailey <cbailey32@xxxxxxxxxxxxx>
---
t/t4201-shortlog.sh | 5 +++--
t/test-lib.sh | 7 ++++---
2 files changed, 7 insertions(+), 5 deletions(-)
diff --git a/t/t4201-shortlog.sh b/t/t4201-shortlog.sh
index 9df054b..da10478 100755
--- a/t/t4201-shortlog.sh
+++ b/t/t4201-shortlog.sh
@@ -9,6 +9,7 @@ test_description='git shortlog
. ./test-lib.sh
test_expect_success 'setup' '
+ test_tick &&
echo 1 >a1 &&
git add a1 &&
tree=$(git write-tree) &&
@@ -59,7 +60,7 @@ fuzz() {
file=$1 &&
sed "
s/$_x40/OBJECT_NAME/g
- s/$_x05/OBJID/g
+ s/$_x35/OBJID/g
s/^ \{6\}[CTa].*/ SUBJECT/g
s/^ \{8\}[^ ].*/ CONTINUATION/g
" <"$file" >"$file.fuzzy" &&
@@ -81,7 +82,7 @@ test_expect_success 'pretty format' '
test_expect_success '--abbrev' '
sed s/SUBJECT/OBJID/ expect.template >expect &&
- git shortlog --format="%h" --abbrev=5 HEAD >log &&
+ git shortlog --format="%h" --abbrev=35 HEAD >log &&
fuzz log >log.predictable &&
test_cmp expect log.predictable
'
diff --git a/t/test-lib.sh b/t/test-lib.sh
index 9b61f16..116bd6a 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -175,9 +175,10 @@ esac
# Convenience
#
-# A regexp to match 5 and 40 hexdigits
+# A regexp to match 5, 35 and 40 hexdigits
_x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
-_x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
+_x35="$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
+_x40="$_x35$_x05"
# Zero SHA-1
_z40=0000000000000000000000000000000000000000
@@ -193,7 +194,7 @@ LF='
# when case-folding filenames
u200c=$(printf '\342\200\214')
-export _x05 _x40 _z40 LF u200c EMPTY_TREE EMPTY_BLOB
+export _x05 _x35 _x40 _z40 LF u200c EMPTY_TREE EMPTY_BLOB
# Each test should start with something like this, after copyright notices:
#
--
2.10.2
