ea4780307c
The "--prefetch" option to git-fetch modifies the default refspec, including eliminating some entries entirely. When we drop an entry we free the strings in the refspec_item, but we forgot to free the matching string in the "raw" array of the refspec struct. There's no behavioral bug here (since we correctly shrink the raw array, too), but we're leaking the allocated string. Let's add in the leak-fix, and while we're at it drop "const" from the type of the raw string array. These strings are always allocated by refspec_append(), etc, and this makes the memory ownership more clear. This is all a bit more intimate with the refspec code than I'd like, and I suspect it would be better if each refspec_item held on to its own raw string, we had a single array, and we could use refspec_item_clear() to clean up everything. But that's a non-trivial refactoring, since refspec_item structs can be held outside of a "struct refspec", without having a matching raw string at all. So let's leave that for now and just fix the leak in the most immediate way. This lets us mark t5582 as leak-free. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
287 lines
8.6 KiB
Bash
Executable File
287 lines
8.6 KiB
Bash
Executable File
#!/bin/sh
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# Copyright (c) 2020, Jacob Keller.
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test_description='"git fetch" with negative refspecs.
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'
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GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
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export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
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TEST_PASSES_SANITIZE_LEAK=true
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. ./test-lib.sh
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test_expect_success setup '
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echo >file original &&
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git add file &&
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git commit -a -m original
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'
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test_expect_success "clone and setup child repos" '
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git clone . one &&
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(
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cd one &&
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echo >file updated by one &&
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git commit -a -m "updated by one" &&
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git switch -c alternate &&
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echo >file updated again by one &&
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git commit -a -m "updated by one again" &&
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git switch main
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) &&
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git clone . two &&
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(
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cd two &&
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git config branch.main.remote one &&
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git config remote.one.url ../one/.git/ &&
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git config remote.one.fetch +refs/heads/*:refs/remotes/one/* &&
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git config --add remote.one.fetch ^refs/heads/alternate
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) &&
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git clone . three
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'
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test_expect_success "fetch one" '
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echo >file updated by origin &&
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git commit -a -m "updated by origin" &&
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(
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cd two &&
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test_must_fail git rev-parse --verify refs/remotes/one/alternate &&
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git fetch one &&
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test_must_fail git rev-parse --verify refs/remotes/one/alternate &&
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git rev-parse --verify refs/remotes/one/main &&
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mine=$(git rev-parse refs/remotes/one/main) &&
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his=$(cd ../one && git rev-parse refs/heads/main) &&
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test "z$mine" = "z$his"
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)
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'
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test_expect_success "fetch with negative refspec on commandline" '
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echo >file updated by origin again &&
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git commit -a -m "updated by origin again" &&
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(
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cd three &&
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alternate_in_one=$(cd ../one && git rev-parse refs/heads/alternate) &&
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echo $alternate_in_one >expect &&
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git fetch ../one/.git refs/heads/*:refs/remotes/one/* ^refs/heads/main &&
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cut -f -1 .git/FETCH_HEAD >actual &&
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test_cmp expect actual
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)
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'
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test_expect_success "fetch with negative sha1 refspec fails" '
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echo >file updated by origin yet again &&
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git commit -a -m "updated by origin yet again" &&
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(
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cd three &&
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main_in_one=$(cd ../one && git rev-parse refs/heads/main) &&
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test_must_fail git fetch ../one/.git refs/heads/*:refs/remotes/one/* ^$main_in_one
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)
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'
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test_expect_success "fetch with negative pattern refspec" '
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echo >file updated by origin once more &&
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git commit -a -m "updated by origin once more" &&
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(
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cd three &&
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alternate_in_one=$(cd ../one && git rev-parse refs/heads/alternate) &&
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echo $alternate_in_one >expect &&
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git fetch ../one/.git refs/heads/*:refs/remotes/one/* ^refs/heads/m* &&
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cut -f -1 .git/FETCH_HEAD >actual &&
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test_cmp expect actual
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)
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'
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test_expect_success "fetch with negative pattern refspec does not expand prefix" '
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echo >file updated by origin another time &&
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git commit -a -m "updated by origin another time" &&
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(
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cd three &&
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alternate_in_one=$(cd ../one && git rev-parse refs/heads/alternate) &&
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main_in_one=$(cd ../one && git rev-parse refs/heads/main) &&
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echo $alternate_in_one >expect &&
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echo $main_in_one >>expect &&
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git fetch ../one/.git refs/heads/*:refs/remotes/one/* ^main &&
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cut -f -1 .git/FETCH_HEAD >actual &&
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test_cmp expect actual
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)
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'
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test_expect_success "fetch with negative refspec avoids duplicate conflict" '
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(
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cd one &&
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git branch dups/a &&
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git branch dups/b &&
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git branch dups/c &&
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git branch other/a &&
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git rev-parse --verify refs/heads/other/a >../expect &&
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git rev-parse --verify refs/heads/dups/b >>../expect &&
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git rev-parse --verify refs/heads/dups/c >>../expect
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) &&
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(
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cd three &&
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git fetch ../one/.git ^refs/heads/dups/a refs/heads/dups/*:refs/dups/* refs/heads/other/a:refs/dups/a &&
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git rev-parse --verify refs/dups/a >../actual &&
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git rev-parse --verify refs/dups/b >>../actual &&
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git rev-parse --verify refs/dups/c >>../actual
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) &&
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test_cmp expect actual
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'
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test_expect_success "push --prune with negative refspec" '
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(
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cd two &&
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git branch prune/a &&
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git branch prune/b &&
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git branch prune/c &&
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git push ../three refs/heads/prune/* &&
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git branch -d prune/a &&
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git branch -d prune/b &&
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git push --prune ../three refs/heads/prune/* ^refs/heads/prune/b
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) &&
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(
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cd three &&
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test_write_lines b c >expect &&
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git for-each-ref --format="%(refname:lstrip=3)" refs/heads/prune/ >actual &&
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test_cmp expect actual
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)
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'
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test_expect_success "push --prune with negative refspec apply to the destination" '
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(
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cd two &&
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git branch ours/a &&
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git branch ours/b &&
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git branch ours/c &&
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git push ../three refs/heads/ours/*:refs/heads/theirs/* &&
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git branch -d ours/a &&
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git branch -d ours/b &&
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git push --prune ../three refs/heads/ours/*:refs/heads/theirs/* ^refs/heads/theirs/b
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) &&
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(
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cd three &&
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test_write_lines b c >expect &&
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git for-each-ref --format="%(refname:lstrip=3)" refs/heads/theirs/ >actual &&
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test_cmp expect actual
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)
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'
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test_expect_success "fetch --prune with negative refspec" '
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(
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cd two &&
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git branch fetch/a &&
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git branch fetch/b &&
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git branch fetch/c
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) &&
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(
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cd three &&
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git fetch ../two/.git refs/heads/fetch/*:refs/heads/copied/*
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) &&
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(
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cd two &&
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git branch -d fetch/a &&
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git branch -d fetch/b
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) &&
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(
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cd three &&
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test_write_lines b c >expect &&
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git fetch -v ../two/.git --prune refs/heads/fetch/*:refs/heads/copied/* ^refs/heads/fetch/b &&
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git for-each-ref --format="%(refname:lstrip=3)" refs/heads/copied/ >actual &&
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test_cmp expect actual
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)
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'
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test_expect_success "push with matching : and negative refspec" '
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# Manually handle cleanup, since test_config is not
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# prepared to take arbitrary options like --add
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test_when_finished "test_unconfig -C two remote.one.push" &&
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# For convenience, we use "master" to refer to the name of
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# the branch created by default in the following.
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#
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# Repositories two and one have branches other than "master"
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# but they have no overlap---"master" is the only one that
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# is shared between them. And the master branch at two is
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# behind the master branch at one by one commit.
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git -C two config --add remote.one.push : &&
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# A matching push tries to update master, fails due to non-ff
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test_must_fail git -C two push one &&
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# "master" may actually not be "master"---find it out.
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current=$(git symbolic-ref HEAD) &&
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# If master is in negative refspec, then the command will not attempt
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# to push and succeed.
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git -C two config --add remote.one.push "^$current" &&
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# With "master" excluded, this push is a no-op. Nothing gets
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# pushed and it succeeds.
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git -C two push -v one
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'
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test_expect_success "push with matching +: and negative refspec" '
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test_when_finished "test_unconfig -C two remote.one.push" &&
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# The same set-up as above, whose side-effect was a no-op.
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git -C two config --add remote.one.push +: &&
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# The push refuses to update the "master" branch that is checked
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# out in the "one" repository, even when it is forced with +:
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test_must_fail git -C two push one &&
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# "master" may actually not be "master"---find it out.
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current=$(git symbolic-ref HEAD) &&
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# If master is in negative refspec, then the command will not attempt
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# to push and succeed
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git -C two config --add remote.one.push "^$current" &&
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# With "master" excluded, this push is a no-op. Nothing gets
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# pushed and it succeeds.
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git -C two push -v one
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'
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test_expect_success '--prefetch correctly modifies refspecs' '
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git -C one config --unset-all remote.origin.fetch &&
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git -C one config --add remote.origin.fetch ^refs/heads/bogus/ignore &&
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git -C one config --add remote.origin.fetch "refs/tags/*:refs/tags/*" &&
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git -C one config --add remote.origin.fetch "refs/heads/bogus/*:bogus/*" &&
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git tag -a -m never never-fetch-tag HEAD &&
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git branch bogus/fetched HEAD~1 &&
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git branch bogus/ignore HEAD &&
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git -C one fetch --prefetch --no-tags &&
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test_must_fail git -C one rev-parse never-fetch-tag &&
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git -C one rev-parse refs/prefetch/bogus/fetched &&
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test_must_fail git -C one rev-parse refs/prefetch/bogus/ignore &&
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# correctly handle when refspec set becomes empty
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# after removing the refs/tags/* refspec.
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git -C one config --unset-all remote.origin.fetch &&
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git -C one config --add remote.origin.fetch "refs/tags/*:refs/tags/*" &&
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git -C one fetch --prefetch --no-tags &&
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test_must_fail git -C one rev-parse never-fetch-tag &&
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# The refspec for refs that are not fully qualified
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# are filtered multiple times.
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git -C one rev-parse refs/prefetch/bogus/fetched &&
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test_must_fail git -C one rev-parse refs/prefetch/bogus/ignore
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'
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test_expect_success '--prefetch succeeds when refspec becomes empty' '
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git checkout bogus/fetched &&
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test_commit extra &&
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git -C one config --unset-all remote.origin.fetch &&
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git -C one config --unset branch.main.remote &&
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git -C one config remote.origin.fetch "+refs/tags/extra" &&
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git -C one config remote.origin.skipfetchall true &&
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git -C one config remote.origin.tagopt "--no-tags" &&
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git -C one fetch --prefetch
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'
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test_done
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