git/t/t3012-ls-files-dedup.sh
ZheNing Hu 93a7d9835f ls-files.c: add --deduplicate option
During a merge conflict, the name of a file may appear multiple
times in "git ls-files" output, once for each stage.  If you use
both `--delete` and `--modify` at the same time, the output may
mention a deleted file twice.

When none of the '-t', '-u', or '-s' options is in use, these
duplicate entries do not add much value to the output.

Introduce a new '--deduplicate' option to suppress them.

Signed-off-by: ZheNing Hu <adlternative@gmail.com>
[jc: extended doc and rewritten commit log]
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-01-23 11:48:20 -08:00

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#!/bin/sh
test_description='git ls-files --deduplicate test'
. ./test-lib.sh
test_expect_success 'setup' '
>a.txt &&
>b.txt &&
>delete.txt &&
git add a.txt b.txt delete.txt &&
git commit -m base &&
echo a >a.txt &&
echo b >b.txt &&
echo delete >delete.txt &&
git add a.txt b.txt delete.txt &&
git commit -m tip &&
git tag tip &&
git reset --hard HEAD^ &&
echo change >a.txt &&
git commit -a -m side &&
git tag side
'
test_expect_success 'git ls-files --deduplicate to show unique unmerged path' '
test_must_fail git merge tip &&
git ls-files --deduplicate >actual &&
cat >expect <<-\EOF &&
a.txt
b.txt
delete.txt
EOF
test_cmp expect actual &&
git merge --abort
'
test_expect_success 'git ls-files -d -m --deduplicate with different display options' '
git reset --hard side &&
test_must_fail git merge tip &&
rm delete.txt &&
git ls-files -d -m --deduplicate >actual &&
cat >expect <<-\EOF &&
a.txt
delete.txt
EOF
test_cmp expect actual &&
git ls-files -d -m -t --deduplicate >actual &&
cat >expect <<-\EOF &&
C a.txt
C a.txt
C a.txt
R delete.txt
C delete.txt
EOF
test_cmp expect actual &&
git ls-files -d -m -c --deduplicate >actual &&
cat >expect <<-\EOF &&
a.txt
b.txt
delete.txt
EOF
test_cmp expect actual &&
git merge --abort
'
test_done