git/t/t6032-merge-large-rename.sh
Elijah Newren df0b99f004 t6032: Add a test checking for excessive output from merge
Previous D/F fixes I submitted (5a2580d and ae74548) had caused merge to
become excessively spammy, which was fixed in 96ecac6 (merge-recursive:
Avoid excessive output for and reprocessing of renames 2010-08-20).  Add a
new test to avoid repeating that mistake with my several upcoming changes.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-09-29 17:32:36 -07:00

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#!/bin/sh
test_description='merging with large rename matrix'
. ./test-lib.sh
count() {
i=1
while test $i -le $1; do
echo $i
i=$(($i + 1))
done
}
test_expect_success 'setup (initial)' '
touch file &&
git add . &&
git commit -m initial &&
git tag initial
'
make_text() {
echo $1: $2
for i in `count 20`; do
echo $1: $i
done
echo $1: $3
}
test_rename() {
test_expect_success "rename ($1, $2)" '
n='$1'
expect='$2'
git checkout -f master &&
git branch -D test$n || true &&
git reset --hard initial &&
for i in $(count $n); do
make_text $i initial initial >$i
done &&
git add . &&
git commit -m add=$n &&
for i in $(count $n); do
make_text $i changed initial >$i
done &&
git commit -a -m change=$n &&
git checkout -b test$n HEAD^ &&
for i in $(count $n); do
git rm $i
make_text $i initial changed >$i.moved
done &&
git add . &&
git commit -m change+rename=$n &&
case "$expect" in
ok) git merge master ;;
*) test_must_fail git merge master ;;
esac
'
}
test_rename 5 ok
test_expect_success 'set diff.renamelimit to 4' '
git config diff.renamelimit 4
'
test_rename 4 ok
test_rename 5 fail
test_expect_success 'set merge.renamelimit to 5' '
git config merge.renamelimit 5
'
test_rename 5 ok
test_rename 6 fail
test_expect_success 'setup large simple rename' '
git config --unset merge.renamelimit &&
git config --unset diff.renamelimit &&
git reset --hard initial &&
for i in $(count 200); do
make_text foo bar baz >$i
done &&
git add . &&
git commit -m create-files &&
git branch simple-change &&
git checkout -b simple-rename &&
mkdir builtin &&
git mv [0-9]* builtin/ &&
git commit -m renamed &&
git checkout simple-change &&
>unrelated-change &&
git add unrelated-change &&
git commit -m unrelated-change
'
test_expect_success 'massive simple rename does not spam added files' '
unset GIT_MERGE_VERBOSITY &&
git merge --no-stat simple-rename | grep -v Removing >output &&
test 5 -gt "$(wc -l < output)"
'
test_done