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t7004: avoid subshells to capture git exit codes

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Several tests in t7004 use the 'test$(git ...) = ...' or the '! (git ...)'
subshell pattern. This swallows git's exit code. If git crashes
(e.g. segmentation fault) the crash would go undetected, and the test
would fail due to a mismatch or an inverted exit code.

Modernize these tests by directly writing output to files(actual) and
verifying them with 'test_cmp' or 'test_grep'. Replace subshell
negations with 'test_must_fail'. This way, if git crashes, the test
fails immediately and clearly instead of hiding the error behind a
string mismatch.

Signed-off-by: Siddharth Shrimali <r.siddharth.shrimali@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Siddharth Shrimali
2026-04-21 11:03:34 +05:30
committed by Junio C Hamano
parent e3253255d3
commit ef85286e51
1 changed files with 18 additions and 8 deletions
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t/t7004-tag.sh
+18 -8
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@@ -155,8 +155,10 @@ test_expect_success 'Multiple -l or --list options are equivalent to one -l opti
'
test_expect_success 'listing all tags if one exists should output that tag' '
test $(git tag -l) = mytag &&
test $(git tag) = mytag
git tag -l >actual &&
test_grep "^mytag$" actual &&
git tag >actual &&
test_grep "^mytag$" actual
'
# pattern matching:
@@ -166,11 +168,15 @@ test_expect_success 'listing a tag using a matching pattern should succeed' '
'
test_expect_success 'listing a tag with --ignore-case' '
test $(git tag -l --ignore-case MYTAG) = mytag
echo mytag >expect &&
git tag -l --ignore-case MYTAG >actual &&
test_cmp expect actual
'
test_expect_success 'listing a tag using a matching pattern should output that tag' '
test $(git tag -l mytag) = mytag
echo mytag >expect &&
git tag -l mytag >actual &&
test_cmp expect actual
'
test_expect_success 'listing tags using a non-matching pattern should succeed' '
@@ -430,8 +436,12 @@ test_expect_success 'listing tags -n in column with column.ui ignored' '
test_expect_success 'a non-annotated tag created without parameters should point to HEAD' '
git tag non-annotated-tag &&
test $(git cat-file -t non-annotated-tag) = commit &&
test $(git rev-parse non-annotated-tag) = $(git rev-parse HEAD)
echo commit >expect &&
git cat-file -t non-annotated-tag >actual &&
test_cmp expect actual &&
git rev-parse HEAD >expect &&
git rev-parse non-annotated-tag >actual &&
test_cmp expect actual
'
test_expect_success 'trying to verify an unknown tag should fail' '
@@ -1520,11 +1530,11 @@ test_expect_success GPG 'verify signed tag fails when public key is not present'
'
test_expect_success 'git tag -a fails if tag annotation is empty' '
! (GIT_EDITOR=cat git tag -a initial-comment)
test_must_fail env GIT_EDITOR=cat git tag -a initial-comment
'
test_expect_success 'message in editor has initial comment' '
! (GIT_EDITOR=cat git tag -a initial-comment >actual)
test_must_fail env GIT_EDITOR=cat git tag -a initial-comment >actual
'
test_expect_success 'message in editor has initial comment: first line' '