git/t/t7421-submodule-summary-add.sh
Patrick Steinhardt ebdbefa4fe builtin/mv: fix leaks for submodule gitfile paths
Similar to the preceding commit, we have effectively given tracking
memory ownership of submodule gitfile paths. Refactor the code to start
tracking allocated strings in a separate `struct strvec` such that we
can easily plug those leaks. Mark now-passing tests as leak free.

Note that ideally, we wouldn't require two separate data structures to
track those paths. But we do need to store `NULL` pointers for the
gitfile paths such that we can indicate that its corresponding entries
in the other arrays do not have such a path at all. And given that
`struct strvec`s cannot store `NULL` pointers we cannot use them to
store this information.

There is another small gotcha that is easy to miss: you may be wondering
why we don't want to store `SUBMODULE_WITH_GITDIR` in the strvec. This
is because this is a mere sentinel value and not actually a string at
all.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-05-27 11:20:03 -07:00

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#!/bin/sh
#
# Copyright (C) 2020 Shourya Shukla
#
test_description='Summary support for submodules, adding them using git submodule add
This test script tries to verify the sanity of summary subcommand of git submodule
while making sure to add submodules using `git submodule add` instead of
`git add` as done in t7401.
'
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
test_expect_success 'setup' '
git config --global protocol.file.allow always
'
test_expect_success 'summary test environment setup' '
git init sm &&
test_commit -C sm "add file" file file-content file-tag &&
git submodule add ./sm my-subm &&
test_tick &&
git commit -m "add submodule"
'
test_expect_success 'submodule summary output for initialized submodule' '
test_commit -C sm "add file2" file2 file2-content file2-tag &&
git submodule update --remote &&
test_tick &&
git commit -m "update submodule" my-subm &&
git submodule summary HEAD^ >actual &&
rev1=$(git -C sm rev-parse --short HEAD^) &&
rev2=$(git -C sm rev-parse --short HEAD) &&
cat >expected <<-EOF &&
* my-subm ${rev1}...${rev2} (1):
> add file2
EOF
test_cmp expected actual
'
test_expect_success 'submodule summary output for deinitialized submodule' '
git submodule deinit my-subm &&
git submodule summary HEAD^ >actual &&
test_must_be_empty actual &&
git submodule update --init my-subm &&
git submodule summary HEAD^ >actual &&
rev1=$(git -C sm rev-parse --short HEAD^) &&
rev2=$(git -C sm rev-parse --short HEAD) &&
cat >expected <<-EOF &&
* my-subm ${rev1}...${rev2} (1):
> add file2
EOF
test_cmp expected actual
'
test_expect_success 'submodule summary output for submodules with changed paths' '
git mv my-subm subm &&
git commit -m "change submodule path" &&
rev=$(git -C sm rev-parse --short HEAD^) &&
git submodule summary HEAD^^ -- my-subm >actual 2>err &&
test_must_be_empty err &&
cat >expected <<-EOF &&
* my-subm ${rev}...0000000:
EOF
test_cmp expected actual
'
test_done