git/t/t4057-diff-combined-paths.sh

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#!/bin/sh
test_description='combined diff show only paths that are different to all parents'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
# verify that diffc.expect matches output of
# $(git diff -c --name-only HEAD HEAD^ HEAD^2)
diffc_verify () {
git diff -c --name-only HEAD HEAD^ HEAD^2 >diffc.actual &&
test_cmp diffc.expect diffc.actual
}
test_expect_success 'trivial merge - combine-diff empty' '
for i in $(test_seq 1 9)
do
echo $i >$i.txt &&
git add $i.txt || return 1
done &&
git commit -m "init" &&
git checkout -b side &&
for i in $(test_seq 2 9)
do
echo $i/2 >>$i.txt || return 1
done &&
git commit -a -m "side 2-9" &&
git checkout main &&
echo 1/2 >1.txt &&
git commit -a -m "main 1" &&
git merge side &&
>diffc.expect &&
diffc_verify
'
test_expect_success 'only one truly conflicting path' '
git checkout side &&
for i in $(test_seq 2 9)
do
echo $i/3 >>$i.txt || return 1
done &&
echo "4side" >>4.txt &&
git commit -a -m "side 2-9 +4" &&
git checkout main &&
for i in $(test_seq 1 9)
do
echo $i/3 >>$i.txt || return 1
done &&
echo "4main" >>4.txt &&
git commit -a -m "main 1-9 +4" &&
test_must_fail git merge side &&
cat <<-\EOF >4.txt &&
4
4/2
4/3
4main
4side
EOF
git add 4.txt &&
git commit -m "merge side (2)" &&
echo 4.txt >diffc.expect &&
diffc_verify
'
test_expect_success 'merge introduces new file' '
git checkout side &&
for i in $(test_seq 5 9)
do
echo $i/4 >>$i.txt || return 1
done &&
git commit -a -m "side 5-9" &&
git checkout main &&
for i in $(test_seq 1 3)
do
echo $i/4 >>$i.txt || return 1
done &&
git commit -a -m "main 1-3 +4hello" &&
git merge side &&
echo "Hello World" >4hello.txt &&
git add 4hello.txt &&
git commit --amend &&
echo 4hello.txt >diffc.expect &&
diffc_verify
'
test_expect_success 'merge removed a file' '
git checkout side &&
for i in $(test_seq 5 9)
do
echo $i/5 >>$i.txt || return 1
done &&
git commit -a -m "side 5-9" &&
git checkout main &&
for i in $(test_seq 1 3)
do
echo $i/4 >>$i.txt || return 1
done &&
git commit -a -m "main 1-3" &&
git merge side &&
git rm 4.txt &&
git commit --amend &&
echo 4.txt >diffc.expect &&
diffc_verify
'
test_done