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git/t/t9351-fast-export-anonymize.sh
Jeff King 8a49495583 fast-export: anonymize "master" refname
Running "fast-export --anonymize" will leave "refs/heads/master"
untouched in the output, for two reasons:

  - it helped to have some known reference point between the original
    and anonymized repository

  - since it's historically the default branch name, it doesn't leak any
    information

Now that we can ask fast-export to retain particular tokens, we have a
much better tool for the first one (because it works for any ref, not
just master).

For the second, the notion of "default branch name" is likely to become
configurable soon, at which point the name _does_ leak information.
Let's drop this special case in preparation.

Note that we have to adjust the test a bit, since it relied on using the
name "master" in the anonymized repos. We could just use
--anonymize-map=master to keep the same output, but then we wouldn't
know if it works because of our hard-coded master or because of the
explicit map.

So let's flip the test a bit, and confirm that we anonymize "master",
but keep "other" in the output.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-06-25 14:19:23 -07:00

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#!/bin/sh
test_description='basic tests for fast-export --anonymize'
. ./test-lib.sh
test_expect_success 'setup simple repo' '
test_commit base &&
test_commit foo &&
test_commit retain-me &&
git checkout -b other HEAD^ &&
mkdir subdir &&
test_commit subdir/bar &&
test_commit subdir/xyzzy &&
fake_commit=$(echo $ZERO_OID | sed s/0/a/) &&
git update-index --add --cacheinfo 160000,$fake_commit,link1 &&
git update-index --add --cacheinfo 160000,$fake_commit,link2 &&
git commit -m "add gitlink" &&
git tag -m "annotated tag" mytag
'
test_expect_success 'export anonymized stream' '
git fast-export --anonymize --all \
--anonymize-map=retain-me \
--anonymize-map=xyzzy:custom-name \
--anonymize-map=other \
>stream
'
# this also covers commit messages
test_expect_success 'stream omits path names' '
! grep base stream &&
! grep foo stream &&
! grep subdir stream &&
! grep bar stream &&
! grep xyzzy stream
'
test_expect_success 'stream contains user-specified names' '
grep retain-me stream &&
grep custom-name stream
'
test_expect_success 'stream omits gitlink oids' '
# avoid relying on the whole oid to remain hash-agnostic; this is
# plenty to be unique within our test case
! grep a000000000000000000 stream
'
test_expect_success 'stream retains other as refname' '
grep other stream
'
test_expect_success 'stream omits other refnames' '
! grep master stream &&
! grep mytag stream
'
test_expect_success 'stream omits identities' '
! grep "$GIT_COMMITTER_NAME" stream &&
! grep "$GIT_COMMITTER_EMAIL" stream &&
! grep "$GIT_AUTHOR_NAME" stream &&
! grep "$GIT_AUTHOR_EMAIL" stream
'
test_expect_success 'stream omits tag message' '
! grep "annotated tag" stream
'
# NOTE: we chdir to the new, anonymized repository
# after this. All further tests should assume this.
test_expect_success 'import stream to new repository' '
git init new &&
cd new &&
git fast-import <../stream
'
test_expect_success 'result has two branches' '
git for-each-ref --format="%(refname)" refs/heads >branches &&
test_line_count = 2 branches &&
other_branch=refs/heads/other &&
main_branch=$(grep -v $other_branch branches)
'
test_expect_success 'repo has original shape and timestamps' '
shape () {
git log --format="%m %ct" --left-right --boundary "$@"
} &&
(cd .. && shape master...other) >expect &&
shape $main_branch...$other_branch >actual &&
test_cmp expect actual
'
test_expect_success 'root tree has original shape' '
# the output entries are not necessarily in the same
# order, but we should at least have the same set of
# object types.
git -C .. ls-tree HEAD >orig-root &&
cut -d" " -f2 <orig-root | sort >expect &&
git ls-tree $other_branch >root &&
cut -d" " -f2 <root | sort >actual &&
test_cmp expect actual
'
test_expect_success 'paths in subdir ended up in one tree' '
git -C .. ls-tree other:subdir >orig-subdir &&
cut -d" " -f2 <orig-subdir | sort >expect &&
tree=$(grep tree root | cut -f2) &&
git ls-tree $other_branch:$tree >tree &&
cut -d" " -f2 <tree >actual &&
test_cmp expect actual
'
test_expect_success 'identical gitlinks got identical oid' '
awk "/commit/ { print \$3 }" <root | sort -u >commits &&
test_line_count = 1 commits
'
test_expect_success 'tag points to branch tip' '
git rev-parse $other_branch >expect &&
git for-each-ref --format="%(*objectname)" | grep . >actual &&
test_cmp expect actual
'
test_expect_success 'idents are shared' '
git log --all --format="%an <%ae>" >authors &&
sort -u authors >unique &&
test_line_count = 1 unique &&
git log --all --format="%cn <%ce>" >committers &&
sort -u committers >unique &&
test_line_count = 1 unique &&
! test_cmp authors committers
'
test_done