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git/t/t1411-reflog-show.sh
Thomas Rast 838f9a1566 log: use true parents for diff when walking reflogs
The reflog walking logic (git log -g) replaces the true parent list
with the preceding commit in the reflog.  This results in bogus commit
diffs when combined with options such as -p; the diff is against the
reflog predecessor, not the parent of the commit.

Save the true parents on the side, extending the functions from the
previous commit.  The diff logic picks them up and uses them to show
the correct diffs.

We do have to be somewhat careful about repeated calling of
save_parents(), since the reflog may list a commit more than once.  We
now store (commit_list*)-1 to distinguish the "not saved yet" and
"root commit" cases.  This lets us preserve an empty parent list even
if save_parents() is repeatedly called.

Suggested-by: Jeff King <peff@peff.net>
Signed-off-by: Thomas Rast <trast@inf.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-08-05 08:27:00 -07:00

169 lines
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Executable file

#!/bin/sh
test_description='Test reflog display routines'
. ./test-lib.sh
test_expect_success 'setup' '
echo content >file &&
git add file &&
test_tick &&
git commit -m one
'
cat >expect <<'EOF'
Reflog: HEAD@{0} (C O Mitter <committer@example.com>)
Reflog message: commit (initial): one
EOF
test_expect_success 'log -g shows reflog headers' '
git log -g -1 >tmp &&
grep ^Reflog <tmp >actual &&
test_cmp expect actual
'
cat >expect <<'EOF'
e46513e HEAD@{0}: commit (initial): one
EOF
test_expect_success 'oneline reflog format' '
git log -g -1 --oneline >actual &&
test_cmp expect actual
'
test_expect_success 'reflog default format' '
git reflog -1 >actual &&
test_cmp expect actual
'
cat >expect <<'EOF'
commit e46513e
Reflog: HEAD@{0} (C O Mitter <committer@example.com>)
Reflog message: commit (initial): one
Author: A U Thor <author@example.com>
one
EOF
test_expect_success 'override reflog default format' '
git reflog --format=short -1 >actual &&
test_cmp expect actual
'
cat >expect <<'EOF'
Reflog: HEAD@{Thu Apr 7 15:13:13 2005 -0700} (C O Mitter <committer@example.com>)
Reflog message: commit (initial): one
EOF
test_expect_success 'using @{now} syntax shows reflog date (multiline)' '
git log -g -1 HEAD@{now} >tmp &&
grep ^Reflog <tmp >actual &&
test_cmp expect actual
'
cat >expect <<'EOF'
e46513e HEAD@{Thu Apr 7 15:13:13 2005 -0700}: commit (initial): one
EOF
test_expect_success 'using @{now} syntax shows reflog date (oneline)' '
git log -g -1 --oneline HEAD@{now} >actual &&
test_cmp expect actual
'
cat >expect <<'EOF'
HEAD@{Thu Apr 7 15:13:13 2005 -0700}
EOF
test_expect_success 'using @{now} syntax shows reflog date (format=%gd)' '
git log -g -1 --format=%gd HEAD@{now} >actual &&
test_cmp expect actual
'
cat >expect <<'EOF'
Reflog: HEAD@{Thu Apr 7 15:13:13 2005 -0700} (C O Mitter <committer@example.com>)
Reflog message: commit (initial): one
EOF
test_expect_success 'using --date= shows reflog date (multiline)' '
git log -g -1 --date=default >tmp &&
grep ^Reflog <tmp >actual &&
test_cmp expect actual
'
cat >expect <<'EOF'
e46513e HEAD@{Thu Apr 7 15:13:13 2005 -0700}: commit (initial): one
EOF
test_expect_success 'using --date= shows reflog date (oneline)' '
git log -g -1 --oneline --date=default >actual &&
test_cmp expect actual
'
cat >expect <<'EOF'
HEAD@{1112911993 -0700}
EOF
test_expect_success 'using --date= shows reflog date (format=%gd)' '
git log -g -1 --format=%gd --date=raw >actual &&
test_cmp expect actual
'
cat >expect <<'EOF'
Reflog: HEAD@{0} (C O Mitter <committer@example.com>)
Reflog message: commit (initial): one
EOF
test_expect_success 'log.date does not invoke "--date" magic (multiline)' '
test_config log.date raw &&
git log -g -1 >tmp &&
grep ^Reflog <tmp >actual &&
test_cmp expect actual
'
cat >expect <<'EOF'
e46513e HEAD@{0}: commit (initial): one
EOF
test_expect_success 'log.date does not invoke "--date" magic (oneline)' '
test_config log.date raw &&
git log -g -1 --oneline >actual &&
test_cmp expect actual
'
cat >expect <<'EOF'
HEAD@{0}
EOF
test_expect_success 'log.date does not invoke "--date" magic (format=%gd)' '
test_config log.date raw &&
git log -g -1 --format=%gd >actual &&
test_cmp expect actual
'
cat >expect <<'EOF'
HEAD@{0}
EOF
test_expect_success '--date magic does not override explicit @{0} syntax' '
git log -g -1 --format=%gd --date=raw HEAD@{0} >actual &&
test_cmp expect actual
'
: >expect
test_expect_success 'empty reflog file' '
git branch empty &&
: >.git/logs/refs/heads/empty &&
git log -g empty >actual &&
test_cmp expect actual
'
# This guards against the alternative of showing the diffs vs. the
# reflog ancestor. The reflog used is designed to list the commits
# more than once, so as to exercise the corresponding logic.
test_expect_success 'git log -g -p shows diffs vs. parents' '
test_commit two &&
git branch flipflop &&
git update-ref refs/heads/flipflop -m flip1 HEAD^ &&
git update-ref refs/heads/flipflop -m flop1 HEAD &&
git update-ref refs/heads/flipflop -m flip2 HEAD^ &&
git log -g -p flipflop >reflog &&
grep -v ^Reflog reflog >actual &&
git log -1 -p HEAD^ >log.one &&
git log -1 -p HEAD >log.two &&
(
cat log.one; echo
cat log.two; echo
cat log.one; echo
cat log.two
) >expect &&
test_cmp expect actual
'
test_done