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0d75bfe67b
The GETTEXT_POISON=YesPlease compile-time testing option added in my
bb946bba76 ("i18n: add GETTEXT_POISON to simulate unfriendly
translator", 2011-02-22) has been slowly bitrotting as strings have
been marked for translation, and new tests have been added without
running it.
I brought this up on the list ("[BUG] test suite broken with
GETTEXT_POISON=YesPlease", [1]) asking whether this mode was useful at
all anymore. At least one person occasionally uses it, and Lars
Schneider offered to change one of the the Travis builds to run in
this mode, so fix up the failing ones.
My test setup runs most of the tests, with the notable exception of
skipping all the p4 tests, so it's possible that there's still some
lurking regressions I haven't fixed.
1. <CACBZZX62+acvi1dpkknadTL827mtCm_QesGSZ=6+UnyeMpg8+Q@mail.gmail.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
98 lines
3.1 KiB
Bash
Executable file
98 lines
3.1 KiB
Bash
Executable file
#!/bin/sh
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test_description='pack-objects breaks long cross-pack delta chains'
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. ./test-lib.sh
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# This mirrors a repeated push setup:
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#
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# 1. A client repeatedly modifies some files, makes a
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# commit, and pushes the result. It does this N times
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# before we get around to repacking.
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#
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# 2. Each push generates a thin pack with the new version of
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# various objects. Let's consider some file in the root tree
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# which is updated in each commit.
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#
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# When generating push number X, we feed commit X-1 (and
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# thus blob X-1) as a preferred base. The resulting pack has
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# blob X as a thin delta against blob X-1.
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#
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# On the receiving end, "index-pack --fix-thin" will
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# complete the pack with a base copy of blob X-1.
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#
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# 3. In older versions of git, if we used the delta from
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# pack X, then we'd always find blob X-1 as a base in the
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# same pack (and generate a fresh delta).
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#
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# But with the pack mru, we jump from delta to delta
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# following the traversal order:
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#
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# a. We grab blob X from pack X as a delta, putting it at
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# the tip of our mru list.
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#
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# b. Eventually we move onto commit X-1. We need other
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# objects which are only in pack X-1 (in the test code
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# below, it's the containing tree). That puts pack X-1
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# at the tip of our mru list.
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#
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# c. Eventually we look for blob X-1, and we find the
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# version in pack X-1 (because it's the mru tip).
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#
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# Now we have blob X as a delta against X-1, which is a delta
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# against X-2, and so forth.
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#
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# In the real world, these small pushes would get exploded by
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# unpack-objects rather than "index-pack --fix-thin", but the
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# same principle applies to larger pushes (they only need one
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# repeatedly-modified file to generate the delta chain).
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test_expect_success 'create series of packs' '
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test-genrandom foo 4096 >content &&
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prev= &&
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for i in $(test_seq 1 10)
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do
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cat content >file &&
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echo $i >>file &&
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git add file &&
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git commit -m $i &&
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cur=$(git rev-parse HEAD^{tree}) &&
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{
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test -n "$prev" && echo "-$prev"
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echo $cur
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echo "$(git rev-parse :file) file"
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} | git pack-objects --stdout >tmp &&
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git index-pack --stdin --fix-thin <tmp || return 1
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prev=$cur
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done
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'
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max_chain() {
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git index-pack --verify-stat-only "$1" >output &&
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perl -lne '
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/chain length = (\d+)/ and $len = $1;
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END { print $len }
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' output
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}
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# Note that this whole setup is pretty reliant on the current
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# packing heuristics. We double-check that our test case
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# actually produces a long chain. If it doesn't, it should be
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# adjusted (or scrapped if the heuristics have become too unreliable)
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test_expect_success 'packing produces a long delta' '
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# Use --window=0 to make sure we are seeing reused deltas,
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# not computing a new long chain.
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pack=$(git pack-objects --all --window=0 </dev/null pack) &&
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echo 9 >expect &&
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max_chain pack-$pack.pack >actual &&
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test_i18ncmp expect actual
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'
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test_expect_success '--depth limits depth' '
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pack=$(git pack-objects --all --depth=5 </dev/null pack) &&
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echo 5 >expect &&
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max_chain pack-$pack.pack >actual &&
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test_i18ncmp expect actual
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'
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test_done
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