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t4212: test bogus timestamps with git-log
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When t4212 was originally added by 9dbe7c3 (pretty: handle
broken commit headers gracefully, 2013-04-17), it tested our
handling of commits with broken ident lines in which the
timestamps could not be parsed. It does so using a bogus line
like "Name <email>-<> 1234 -0000", because that simulates an
error that was seen in the wild.

Later, 03818a4 (split_ident: parse timestamp from end of
line, 2013-10-14) made our parser smart enough to actually
find the timestamp on such a line, and t4212 was adjusted to
match. While it's nice that we handle this real-world case,
this meant that we were not actually testing the
bogus-timestamp case anymore.

This patch adds a test with a totally incomprehensible
timestamp to make sure we are testing the code path.

Note that the behavior is slightly different between regular log
output and "--format=%ad". In the former case, we produce a
sentinel value and in the latter, we produce an empty
string. While at first this seems unnecessarily
inconsistent, it matches the original behavior given by
9dbe7c3.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Jeff King authored and Junio C Hamano committed Feb 24, 2014
1 parent e45bda8 commit 7d9a281
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21 changes: 21 additions & 0 deletions t/t4212-log-corrupt.sh
Original file line number Diff line number Diff line change
Expand Up @@ -39,4 +39,25 @@ test_expect_success 'git log --format with broken author email' '
test_cmp expect.err actual.err
'

munge_author_date () {
git cat-file commit "$1" >commit.orig &&
sed "s/^\(author .*>\) [0-9]*/\1 $2/" <commit.orig >commit.munge &&
git hash-object -w -t commit commit.munge
}

test_expect_success 'unparsable dates produce sentinel value' '
commit=$(munge_author_date HEAD totally_bogus) &&
echo "Date: Thu Jan 1 00:00:00 1970 +0000" >expect &&
git log -1 $commit >actual.full &&
grep Date <actual.full >actual &&
test_cmp expect actual
'

test_expect_success 'unparsable dates produce sentinel value (%ad)' '
commit=$(munge_author_date HEAD totally_bogus) &&
echo >expect &&
git log -1 --format=%ad $commit >actual
test_cmp expect actual
'

test_done

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