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t7004: replace wc -l with modern test helpers 

Pipelines of the form "test $(git tag | wc -l) -eq 0" suppress git's
exit code. This means a crash or unexpected failure from git tag would
go undetected. Additionally, the use of $(...) creates a subshell for
each check, which adds unnecessary overhead.

Replace these patterns with test_must_be_empty and test_line_count.
These helpers check the output of git directly from a file, ensuring
git's exit code is captured properly via the preceding "&&" chain.
They also provide better diagnostics on failure by printing the
contents of the file when a check does not pass.

Signed-off-by: Siddharth Shrimali <r.siddharth.shrimali@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
Siddharth Shrimali 2026-04-01 11:50:29 +05:30 committed by Junio C Hamano
parent cf2139f8e1
commit 42148dafdf
1 changed files with 10 additions and 5 deletions
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15
t/t7004-tag.sh
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@ -33,8 +33,10 @@ test_expect_success 'listing all tags in an empty tree should succeed' '
'

test_expect_success 'listing all tags in an empty tree should output nothing' '
test $(git tag -l | wc -l) -eq 0 &&
test $(git tag | wc -l) -eq 0
git tag -l >actual &&
test_must_be_empty actual &&
git tag >actual &&
test_must_be_empty actual
'

test_expect_success 'sort tags, ignore case' '
@ -178,7 +180,8 @@ test_expect_success 'listing tags using a non-matching pattern should succeed' '
'

test_expect_success 'listing tags using a non-matching pattern should output nothing' '
test $(git tag -l xxx | wc -l) -eq 0
git tag -l xxx >actual &&
test_must_be_empty actual
'

# special cases for creating tags:
@ -188,13 +191,15 @@ test_expect_success 'trying to create a tag with the name of one existing should
'

test_expect_success 'trying to create a tag with a non-valid name should fail' '
test $(git tag -l | wc -l) -eq 1 &&
git tag -l >actual &&
test_line_count = 1 actual &&
test_must_fail git tag "" &&
test_must_fail git tag .othertag &&
test_must_fail git tag "other tag" &&
test_must_fail git tag "othertag^" &&
test_must_fail git tag "other~tag" &&
test $(git tag -l | wc -l) -eq 1
git tag -l >actual &&
test_line_count = 1 actual
'

test_expect_success 'creating a tag using HEAD directly should succeed' '