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git/t/t6412-merge-large-rename.sh
Elijah Newren 919df31955 Collect merge-related tests to t64xx
The tests for the merge machinery are spread over several places.
Collect them into t64xx for simplicity.  Some notes:

t60[234]*.sh:
  Merge tests started in t602*, overgrew bisect and remote tracking
  tests in t6030, t6040, and t6041, and nearly overtook replace tests
  in t6050.  This made picking out relevant tests that I wanted to run
  in a tighter loop slightly more annoying for years.

t303*.sh:
  These started out as tests for the 'merge-recursive' toplevel command,
  but did not restrict to that and had lots of overlap with the
  underlying merge machinery.
t7405, t7613:
  submodule-specific merge logic started out in submodule.c but was
  moved to merge-recursive.c in commit 18cfc08866 ("submodule.c: move
  submodule merging to merge-recursive.c", 2018-05-15).  Since these
  tests are about the logic found in the merge machinery, moving these
  tests to be with the merge tests makes sense.

t7607, t7609:
  Having tests spread all over the place makes it more likely that
  additional tests related to a certain piece of logic grow in all those
  other places.  Much like t303*.sh, these two tests were about the
  underlying merge machinery rather than outer levels.

Tests that were NOT moved:

t76[01]*.sh:
  Other than the four tests mentioned above, the remaining tests in
  t76[01]*.sh are related to non-recursive merge strategies, parameter
  parsing, and other stuff associated with the highlevel builtin/merge.c
  rather than the recursive merge machinery.

t3[45]*.sh:
  The rebase testcases in t34*.sh also test the merge logic pretty
  heavily; sometimes changes I make only trigger failures in the rebase
  tests.  The rebase tests are already nicely coupled together, though,
  and I didn't want to mess that up.  Similar comments apply for the
  cherry-pick tests in t35*.sh.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-10 15:59:00 -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='$2' &&
git checkout -f master &&
test_might_fail git branch -D test$n &&
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' '
sane_unset GIT_MERGE_VERBOSITY &&
git merge --no-stat simple-rename | grep -v Removing >output &&
test_line_count -lt 5 output
'
test_done