git/t/t2023-checkout-m.sh

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#!/bin/sh
test_description='checkout -m -- <conflicted path>
Ensures that checkout -m on a resolved file restores the conflicted file'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
test_expect_success setup '
test_tick &&
test_commit both.txt both.txt initial &&
git branch topic &&
test_commit modified_in_main both.txt in_main &&
test_commit added_in_main each.txt in_main &&
git checkout topic &&
test_commit modified_in_topic both.txt in_topic &&
test_commit added_in_topic each.txt in_topic
'
test_expect_success 'git merge main' '
test_must_fail git merge main
'
clean_branchnames () {
# Remove branch names after conflict lines
sed 's/^\([<>]\{5,\}\) .*$/\1/'
}
test_expect_success '-m restores 2-way conflicted+resolved file' '
cp each.txt each.txt.conflicted &&
echo resolved >each.txt &&
git add each.txt &&
git checkout -m -- each.txt &&
clean_branchnames <each.txt >each.txt.cleaned &&
clean_branchnames <each.txt.conflicted >each.txt.conflicted.cleaned &&
test_cmp each.txt.conflicted.cleaned each.txt.cleaned
'
test_expect_success '-m restores 3-way conflicted+resolved file' '
cp both.txt both.txt.conflicted &&
echo resolved >both.txt &&
git add both.txt &&
git checkout -m -- both.txt &&
clean_branchnames <both.txt >both.txt.cleaned &&
clean_branchnames <both.txt.conflicted >both.txt.conflicted.cleaned &&
test_cmp both.txt.conflicted.cleaned both.txt.cleaned
'
test_expect_success 'force checkout a conflict file creates stage zero entry' '
git init co-force &&
(
cd co-force &&
echo a >a &&
git add a &&
git commit -ama &&
A_OBJ=$(git rev-parse :a) &&
git branch topic &&
echo b >a &&
git commit -amb &&
B_OBJ=$(git rev-parse :a) &&
git checkout topic &&
echo c >a &&
C_OBJ=$(git hash-object a) &&
git checkout -m main &&
test_cmp_rev :1:a $A_OBJ &&
test_cmp_rev :2:a $B_OBJ &&
test_cmp_rev :3:a $C_OBJ &&
git checkout -f topic &&
test_cmp_rev :0:a $A_OBJ
)
'
test_done