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contrib/subtree: Add a test for subtree rebase that loses commits

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This test merges an external tree in as a subtree, makes some commits
on top of it and splits it back out.  In the process the added commits
are lost or the rebase aborts with an internal error.  The tests are
marked to expect failure so that we don't forget to fix it.

Signed-off-by: David A. Greene <greened@obbligato.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
David A. Greene 2016-06-28 05:54:02 -05:00 committed by Junio C Hamano
parent 754884255b
commit 5f35900849
1 changed files with 119 additions and 0 deletions
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119
t/t3427-rebase-subtree.sh Executable file
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#!/bin/sh
test_description='git rebase tests for -Xsubtree
This test runs git rebase and tests the subtree strategy.
'
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-rebase.sh
commit_message() {
git log --pretty=format:%s -1 "$1"
}
test_expect_success 'setup' '
test_commit README &&
mkdir files &&
(
cd files &&
git init &&
test_commit master1 &&
test_commit master2 &&
test_commit master3
) &&
git fetch files master &&
git branch files-master FETCH_HEAD &&
git read-tree --prefix=files_subtree files-master &&
git checkout -- files_subtree &&
tree=$(git write-tree) &&
head=$(git rev-parse HEAD) &&
rev=$(git rev-parse --verify files-master^0) &&
commit=$(git commit-tree -p $head -p $rev -m "Add subproject master" $tree) &&
git update-ref HEAD $commit &&
(
cd files_subtree &&
test_commit master4
) &&
test_commit files_subtree/master5
'
# FAILURE: Does not preserve master4.
test_expect_failure 'Rebase -Xsubtree --preserve-merges --onto commit 4' '
reset_rebase &&
git checkout -b rebase-preserve-merges-4 master &&
git filter-branch --prune-empty -f --subdirectory-filter files_subtree &&
git commit -m "Empty commit" --allow-empty &&
git rebase -Xsubtree=files_subtree --preserve-merges --onto files-master master &&
verbose test "$(commit_message HEAD~)" = "files_subtree/master4"
'
# FAILURE: Does not preserve master5.
test_expect_failure 'Rebase -Xsubtree --preserve-merges --onto commit 5' '
reset_rebase &&
git checkout -b rebase-preserve-merges-5 master &&
git filter-branch --prune-empty -f --subdirectory-filter files_subtree &&
git commit -m "Empty commit" --allow-empty &&
git rebase -Xsubtree=files_subtree --preserve-merges --onto files-master master &&
verbose test "$(commit_message HEAD)" = "files_subtree/master5"
'
# FAILURE: Does not preserve master4.
test_expect_failure 'Rebase -Xsubtree --keep-empty --preserve-merges --onto commit 4' '
reset_rebase &&
git checkout -b rebase-keep-empty-4 master &&
git filter-branch --prune-empty -f --subdirectory-filter files_subtree &&
git commit -m "Empty commit" --allow-empty &&
git rebase -Xsubtree=files_subtree --keep-empty --preserve-merges --onto files-master master &&
verbose test "$(commit_message HEAD~2)" = "files_subtree/master4"
'
# FAILURE: Does not preserve master5.
test_expect_failure 'Rebase -Xsubtree --keep-empty --preserve-merges --onto commit 5' '
reset_rebase &&
git checkout -b rebase-keep-empty-5 master &&
git filter-branch --prune-empty -f --subdirectory-filter files_subtree &&
git commit -m "Empty commit" --allow-empty &&
git rebase -Xsubtree=files_subtree --keep-empty --preserve-merges --onto files-master master &&
verbose test "$(commit_message HEAD~)" = "files_subtree/master5"
'
# FAILURE: Does not preserve Empty.
test_expect_failure 'Rebase -Xsubtree --keep-empty --preserve-merges --onto empty commit' '
reset_rebase &&
git checkout -b rebase-keep-empty-empty master &&
git filter-branch --prune-empty -f --subdirectory-filter files_subtree &&
git commit -m "Empty commit" --allow-empty &&
git rebase -Xsubtree=files_subtree --keep-empty --preserve-merges --onto files-master master &&
verbose test "$(commit_message HEAD)" = "Empty commit"
'
# FAILURE: fatal: Could not parse object
test_expect_failure 'Rebase -Xsubtree --onto commit 4' '
reset_rebase &&
git checkout -b rebase-onto-4 master &&
git filter-branch --prune-empty -f --subdirectory-filter files_subtree &&
git commit -m "Empty commit" --allow-empty &&
git rebase -Xsubtree=files_subtree --onto files-master master &&
verbose test "$(commit_message HEAD~2)" = "files_subtree/master4"
'
# FAILURE: fatal: Could not parse object
test_expect_failure 'Rebase -Xsubtree --onto commit 5' '
reset_rebase &&
git checkout -b rebase-onto-5 master &&
git filter-branch --prune-empty -f --subdirectory-filter files_subtree &&
git commit -m "Empty commit" --allow-empty &&
git rebase -Xsubtree=files_subtree --onto files-master master &&
verbose test "$(commit_message HEAD~)" = "files_subtree/master5"
'
# FAILURE: fatal: Could not parse object
test_expect_failure 'Rebase -Xsubtree --onto empty commit' '
reset_rebase &&
git checkout -b rebase-onto-empty master &&
git filter-branch --prune-empty -f --subdirectory-filter files_subtree &&
git commit -m "Empty commit" --allow-empty &&
git rebase -Xsubtree=files_subtree --onto files-master master &&
verbose test "$(commit_message HEAD)" = "Empty commit"
'
test_done