git-commit-vandalism/t/t6011-rev-list-with-bad-commit.sh
Derrick Stolee 31b1de6a09 commit-graph: turn on commit-graph by default
The commit-graph feature has seen a lot of activity in the past
year or so since it was introduced. The feature is a critical
performance enhancement for medium- to large-sized repos, and
does not significantly hurt small repos.

Change the defaults for core.commitGraph and gc.writeCommitGraph
to true so users benefit from this feature by default.

There are several places in the test suite where the environment
variable GIT_TEST_COMMIT_GRAPH is disabled to avoid reading a
commit-graph, if it exists. The config option overrides the
environment, so swap these. Some GIT_TEST_COMMIT_GRAPH assignments
remain, and those are to avoid writing a commit-graph when a new
commit is created.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-08-13 13:33:55 -07:00

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#!/bin/sh
test_description='git rev-list should notice bad commits'
. ./test-lib.sh
# Note:
# - compression level is set to zero to make "corruptions" easier to perform
# - reflog is disabled to avoid extra references which would twart the test
test_expect_success 'setup' \
'
git init &&
git config core.compression 0 &&
git config core.logallrefupdates false &&
echo "foo" > foo &&
git add foo &&
git commit -m "first commit" &&
echo "bar" > bar &&
git add bar &&
git commit -m "second commit" &&
echo "baz" > baz &&
git add baz &&
git commit -m "third commit" &&
echo "foo again" >> foo &&
git add foo &&
git commit -m "fourth commit" &&
git repack -a -f -d
'
test_expect_success 'verify number of revisions' \
'
revs=$(git rev-list --all | wc -l) &&
test $revs -eq 4 &&
first_commit=$(git rev-parse HEAD~3)
'
test_expect_success 'corrupt second commit object' \
'
perl -i.bak -pe "s/second commit/socond commit/" .git/objects/pack/*.pack &&
test_must_fail git fsck --full
'
test_expect_success 'rev-list should fail' '
test_must_fail env GIT_TEST_COMMIT_GRAPH=0 git -c core.commitGraph=false rev-list --all > /dev/null
'
test_expect_success 'git repack _MUST_ fail' \
'
test_must_fail git repack -a -f -d
'
test_expect_success 'first commit is still available' \
'
git log $first_commit
'
test_done