git/t/t5537-fetch-shallow.sh
Jonathan Tan 07c3c2aa16 tests: define GIT_TEST_SIDEBAND_ALL
Define a GIT_TEST_SIDEBAND_ALL environment variable meant to be used
from tests. When set to true, this overrides uploadpack.allowsidebandall
to true, allowing the entire test suite to be run as if this
configuration is in place for all repositories.

As of this patch, all tests pass whether GIT_TEST_SIDEBAND_ALL is unset
or set to 1.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-01-17 11:25:07 -08:00

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#!/bin/sh
test_description='fetch/clone from a shallow clone'
. ./test-lib.sh
commit() {
echo "$1" >tracked &&
git add tracked &&
git commit -m "$1"
}
test_expect_success 'setup' '
commit 1 &&
commit 2 &&
commit 3 &&
commit 4 &&
git config --global transfer.fsckObjects true
'
test_expect_success 'setup shallow clone' '
git clone --no-local --depth=2 .git shallow &&
git --git-dir=shallow/.git log --format=%s >actual &&
cat <<EOF >expect &&
4
3
EOF
test_cmp expect actual
'
test_expect_success 'clone from shallow clone' '
git clone --no-local shallow shallow2 &&
(
cd shallow2 &&
git fsck &&
git log --format=%s >actual &&
cat <<EOF >expect &&
4
3
EOF
test_cmp expect actual
)
'
test_expect_success 'fetch from shallow clone' '
(
cd shallow &&
commit 5
) &&
(
cd shallow2 &&
git fetch &&
git fsck &&
git log --format=%s origin/master >actual &&
cat <<EOF >expect &&
5
4
3
EOF
test_cmp expect actual
)
'
test_expect_success 'fetch --depth from shallow clone' '
(
cd shallow &&
commit 6
) &&
(
cd shallow2 &&
git fetch --depth=2 &&
git fsck &&
git log --format=%s origin/master >actual &&
cat <<EOF >expect &&
6
5
EOF
test_cmp expect actual
)
'
test_expect_success 'fetch --unshallow from shallow clone' '
(
cd shallow2 &&
git fetch --unshallow &&
git fsck &&
git log --format=%s origin/master >actual &&
cat <<EOF >expect &&
6
5
4
3
EOF
test_cmp expect actual
)
'
test_expect_success 'fetch something upstream has but hidden by clients shallow boundaries' '
# the blob "1" is available in .git but hidden by the
# shallow2/.git/shallow and it should be resent
! git --git-dir=shallow2/.git cat-file blob $(echo 1|git hash-object --stdin) >/dev/null &&
echo 1 >1.t &&
git add 1.t &&
git commit -m add-1-back &&
(
cd shallow2 &&
git fetch ../.git +refs/heads/master:refs/remotes/top/master &&
git fsck &&
git log --format=%s top/master >actual &&
cat <<EOF >expect &&
add-1-back
4
3
EOF
test_cmp expect actual
) &&
git --git-dir=shallow2/.git cat-file blob $(echo 1|git hash-object --stdin) >/dev/null
'
test_expect_success 'fetch that requires changes in .git/shallow is filtered' '
(
cd shallow &&
git checkout --orphan no-shallow &&
commit no-shallow
) &&
git init notshallow &&
(
cd notshallow &&
git fetch ../shallow/.git refs/heads/*:refs/remotes/shallow/*&&
git for-each-ref --format="%(refname)" >actual.refs &&
cat <<EOF >expect.refs &&
refs/remotes/shallow/no-shallow
EOF
test_cmp expect.refs actual.refs &&
git log --format=%s shallow/no-shallow >actual &&
cat <<EOF >expect &&
no-shallow
EOF
test_cmp expect actual
)
'
test_expect_success 'fetch --update-shallow' '
(
cd shallow &&
git checkout master &&
commit 7 &&
git tag -m foo heavy-tag HEAD^ &&
git tag light-tag HEAD^:tracked
) &&
(
cd notshallow &&
git fetch --update-shallow ../shallow/.git refs/heads/*:refs/remotes/shallow/* &&
git fsck &&
git for-each-ref --sort=refname --format="%(refname)" >actual.refs &&
cat <<EOF >expect.refs &&
refs/remotes/shallow/master
refs/remotes/shallow/no-shallow
refs/tags/heavy-tag
refs/tags/light-tag
EOF
test_cmp expect.refs actual.refs &&
git log --format=%s shallow/master >actual &&
cat <<EOF >expect &&
7
6
5
4
3
EOF
test_cmp expect actual
)
'
test_expect_success POSIXPERM,SANITY 'shallow fetch from a read-only repo' '
cp -R .git read-only.git &&
test_when_finished "find read-only.git -type d -print | xargs chmod +w" &&
find read-only.git -print | xargs chmod -w &&
git clone --no-local --depth=2 read-only.git from-read-only &&
git --git-dir=from-read-only/.git log --format=%s >actual &&
cat >expect <<EOF &&
add-1-back
4
EOF
test_cmp expect actual
'
test_expect_success '.git/shallow is edited by repack' '
git init shallow-server &&
test_commit -C shallow-server A &&
test_commit -C shallow-server B &&
git -C shallow-server checkout -b branch &&
test_commit -C shallow-server C &&
test_commit -C shallow-server E &&
test_commit -C shallow-server D &&
d="$(git -C shallow-server rev-parse --verify D^0)" &&
git -C shallow-server checkout master &&
git clone --depth=1 --no-tags --no-single-branch \
"file://$PWD/shallow-server" shallow-client &&
: now remove the branch and fetch with prune &&
git -C shallow-server branch -D branch &&
git -C shallow-client fetch --prune --depth=1 \
origin "+refs/heads/*:refs/remotes/origin/*" &&
git -C shallow-client repack -adfl &&
test_must_fail git -C shallow-client rev-parse --verify $d^0 &&
! grep $d shallow-client/.git/shallow &&
git -C shallow-server branch branch-orig $d &&
git -C shallow-client fetch --prune --depth=2 \
origin "+refs/heads/*:refs/remotes/origin/*"
'
. "$TEST_DIRECTORY"/lib-httpd.sh
start_httpd
REPO="$HTTPD_DOCUMENT_ROOT_PATH/repo"
test_expect_success 'shallow fetches check connectivity before writing shallow file' '
rm -rf "$REPO" client &&
git init "$REPO" &&
test_commit -C "$REPO" one &&
test_commit -C "$REPO" two &&
test_commit -C "$REPO" three &&
git init client &&
# Use protocol v2 to ensure that shallow information is sent exactly
# once by the server, since we are planning to manipulate it.
git -C "$REPO" config protocol.version 2 &&
git -C client config protocol.version 2 &&
git -C client fetch --depth=2 "$HTTPD_URL/one_time_sed/repo" master:a_branch &&
# Craft a situation in which the server sends back an unshallow request
# with an empty packfile. This is done by refetching with a shorter
# depth (to ensure that the packfile is empty), and overwriting the
# shallow line in the response with the unshallow line we want.
printf "s/0034shallow %s/0036unshallow %s/" \
"$(git -C "$REPO" rev-parse HEAD)" \
"$(git -C "$REPO" rev-parse HEAD^)" \
>"$HTTPD_ROOT_PATH/one-time-sed" &&
test_must_fail env GIT_TEST_SIDEBAND_ALL=0 git -C client \
fetch --depth=1 "$HTTPD_URL/one_time_sed/repo" \
master:a_branch &&
# Ensure that the one-time-sed script was used.
! test -e "$HTTPD_ROOT_PATH/one-time-sed" &&
# Ensure that the resulting repo is consistent, despite our failure to
# fetch.
git -C client fsck
'
stop_httpd
test_done