git-commit-vandalism/t/t4039-diff-assume-unchanged.sh
Ævar Arnfjörð Bjarmason 6ab75ac839 revisions API: call diff_free(&revs->pruning) in revisions_release()
Call diff_free() on the "pruning" member of "struct rev_info".  Doing
so makes several tests pass under SANITIZE=leak.

This was also the last missing piece that allows us to remove the
UNLEAK() in "cmd_diff" and "cmd_diff_index", which allows us to use
those commands as a canary for general leaks in the revisions API. See
[1] for further rationale, and 886e1084d7 (builtin/: add UNLEAKs,
2017-10-01) for the commit that added the UNLEAK() there.

1. https://lore.kernel.org/git/220218.861r00ib86.gmgdl@evledraar.gmail.com/

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-04-13 23:56:10 -07:00

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#!/bin/sh
test_description='diff with assume-unchanged entries'
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
# external diff has been tested in t4020-diff-external.sh
test_expect_success 'setup' '
echo zero > zero &&
git add zero &&
git commit -m zero &&
echo one > one &&
echo two > two &&
blob=$(git hash-object one) &&
git add one two &&
git commit -m onetwo &&
git update-index --assume-unchanged one &&
echo borked >> one &&
test "$(git ls-files -v one)" = "h one"
'
test_expect_success 'diff-index does not examine assume-unchanged entries' '
git diff-index HEAD^ -- one | grep -q $blob
'
test_expect_success 'diff-files does not examine assume-unchanged entries' '
rm one &&
test -z "$(git diff-files -- one)"
'
test_expect_success POSIXPERM 'find-copies-harder is not confused by mode bits' '
echo content >exec &&
chmod +x exec &&
git add exec &&
git commit -m exec &&
git update-index --assume-unchanged exec &&
git diff-files --find-copies-harder -- exec >actual &&
test_must_be_empty actual
'
test_done