Squashed 'third_party/git/' content from commit cb71568594

git-subtree-dir: third_party/git
git-subtree-split: cb715685942260375e1eb8153b0768a376e4ece7

1 files changed, 281 insertions, 0 deletions

diff --git a/t/t3412-rebase-root.sh b/t/t3412-rebase-root.sh
new file mode 100755
index 000000000000..21632a984e76
--- /dev/null
+++ b/t/t3412-rebase-root.sh
@@ -0,0 +1,281 @@
+#!/bin/sh
+
+test_description='git rebase --root
+
+Tests if git rebase --root --onto <newparent> can rebase the root commit.
+'
+. ./test-lib.sh
+
+log_with_names () {
+	git rev-list --topo-order --parents --pretty="tformat:%s" HEAD |
+	git name-rev --stdin --name-only --refs=refs/heads/$1
+}
+
+
+test_expect_success 'prepare repository' '
+	test_commit 1 A &&
+	test_commit 2 A &&
+	git symbolic-ref HEAD refs/heads/other &&
+	rm .git/index &&
+	test_commit 3 B &&
+	test_commit 1b A 1 &&
+	test_commit 4 B
+'
+
+test_expect_success 'rebase --root fails with too many args' '
+	git checkout -B fail other &&
+	test_must_fail git rebase --onto master --root fail fail
+'
+
+test_expect_success 'setup pre-rebase hook' '
+	mkdir -p .git/hooks &&
+	cat >.git/hooks/pre-rebase <<EOF &&
+#!$SHELL_PATH
+echo "\$1,\$2" >.git/PRE-REBASE-INPUT
+EOF
+	chmod +x .git/hooks/pre-rebase
+'
+cat > expect <<EOF
+4
+3
+2
+1
+EOF
+
+test_expect_success 'rebase --root --onto <newbase>' '
+	git checkout -b work other &&
+	git rebase --root --onto master &&
+	git log --pretty=tformat:"%s" > rebased &&
+	test_cmp expect rebased
+'
+
+test_expect_success 'pre-rebase got correct input (1)' '
+	test "z$(cat .git/PRE-REBASE-INPUT)" = z--root,
+'
+
+test_expect_success 'rebase --root --onto <newbase> <branch>' '
+	git branch work2 other &&
+	git rebase --root --onto master work2 &&
+	git log --pretty=tformat:"%s" > rebased2 &&
+	test_cmp expect rebased2
+'
+
+test_expect_success 'pre-rebase got correct input (2)' '
+	test "z$(cat .git/PRE-REBASE-INPUT)" = z--root,work2
+'
+
+test_expect_success 'rebase -i --root --onto <newbase>' '
+	git checkout -b work3 other &&
+	git rebase -i --root --onto master &&
+	git log --pretty=tformat:"%s" > rebased3 &&
+	test_cmp expect rebased3
+'
+
+test_expect_success 'pre-rebase got correct input (3)' '
+	test "z$(cat .git/PRE-REBASE-INPUT)" = z--root,
+'
+
+test_expect_success 'rebase -i --root --onto <newbase> <branch>' '
+	git branch work4 other &&
+	git rebase -i --root --onto master work4 &&
+	git log --pretty=tformat:"%s" > rebased4 &&
+	test_cmp expect rebased4
+'
+
+test_expect_success 'pre-rebase got correct input (4)' '
+	test "z$(cat .git/PRE-REBASE-INPUT)" = z--root,work4
+'
+
+test_expect_success REBASE_P 'rebase -i -p with linear history' '
+	git checkout -b work5 other &&
+	git rebase -i -p --root --onto master &&
+	git log --pretty=tformat:"%s" > rebased5 &&
+	test_cmp expect rebased5
+'
+
+test_expect_success REBASE_P 'pre-rebase got correct input (5)' '
+	test "z$(cat .git/PRE-REBASE-INPUT)" = z--root,
+'
+
+test_expect_success 'set up merge history' '
+	git checkout other^ &&
+	git checkout -b side &&
+	test_commit 5 C &&
+	git checkout other &&
+	git merge side
+'
+
+cat > expect-side <<'EOF'
+commit work6 work6~1 work6^2
+Merge branch 'side' into other
+commit work6^2 work6~2
+5
+commit work6~1 work6~2
+4
+commit work6~2 work6~3
+3
+commit work6~3 work6~4
+2
+commit work6~4
+1
+EOF
+
+test_expect_success REBASE_P 'rebase -i -p with merge' '
+	git checkout -b work6 other &&
+	git rebase -i -p --root --onto master &&
+	log_with_names work6 > rebased6 &&
+	test_cmp expect-side rebased6
+'
+
+test_expect_success 'set up second root and merge' '
+	git symbolic-ref HEAD refs/heads/third &&
+	rm .git/index &&
+	rm A B C &&
+	test_commit 6 D &&
+	git checkout other &&
+	git merge --allow-unrelated-histories third
+'
+
+cat > expect-third <<'EOF'
+commit work7 work7~1 work7^2
+Merge branch 'third' into other
+commit work7^2 work7~4
+6
+commit work7~1 work7~2 work7~1^2
+Merge branch 'side' into other
+commit work7~1^2 work7~3
+5
+commit work7~2 work7~3
+4
+commit work7~3 work7~4
+3
+commit work7~4 work7~5
+2
+commit work7~5
+1
+EOF
+
+test_expect_success REBASE_P 'rebase -i -p with two roots' '
+	git checkout -b work7 other &&
+	git rebase -i -p --root --onto master &&
+	log_with_names work7 > rebased7 &&
+	test_cmp expect-third rebased7
+'
+
+test_expect_success 'setup pre-rebase hook that fails' '
+	mkdir -p .git/hooks &&
+	cat >.git/hooks/pre-rebase <<EOF &&
+#!$SHELL_PATH
+false
+EOF
+	chmod +x .git/hooks/pre-rebase
+'
+
+test_expect_success 'pre-rebase hook stops rebase' '
+	git checkout -b stops1 other &&
+	test_must_fail git rebase --root --onto master &&
+	test "z$(git symbolic-ref HEAD)" = zrefs/heads/stops1 &&
+	test 0 = $(git rev-list other...stops1 | wc -l)
+'
+
+test_expect_success 'pre-rebase hook stops rebase -i' '
+	git checkout -b stops2 other &&
+	test_must_fail git rebase --root --onto master &&
+	test "z$(git symbolic-ref HEAD)" = zrefs/heads/stops2 &&
+	test 0 = $(git rev-list other...stops2 | wc -l)
+'
+
+test_expect_success 'remove pre-rebase hook' '
+	rm -f .git/hooks/pre-rebase
+'
+
+test_expect_success 'set up a conflict' '
+	git checkout master &&
+	echo conflict > B &&
+	git add B &&
+	git commit -m conflict
+'
+
+test_expect_success 'rebase --root with conflict (first part)' '
+	git checkout -b conflict1 other &&
+	test_must_fail git rebase --root --onto master &&
+	git ls-files -u | grep "B$"
+'
+
+test_expect_success 'fix the conflict' '
+	echo 3 > B &&
+	git add B
+'
+
+cat > expect-conflict <<EOF
+6
+5
+4
+3
+conflict
+2
+1
+EOF
+
+test_expect_success 'rebase --root with conflict (second part)' '
+	git rebase --continue &&
+	git log --pretty=tformat:"%s" > conflict1 &&
+	test_cmp expect-conflict conflict1
+'
+
+test_expect_success 'rebase -i --root with conflict (first part)' '
+	git checkout -b conflict2 other &&
+	test_must_fail git rebase -i --root --onto master &&
+	git ls-files -u | grep "B$"
+'
+
+test_expect_success 'fix the conflict' '
+	echo 3 > B &&
+	git add B
+'
+
+test_expect_success 'rebase -i --root with conflict (second part)' '
+	git rebase --continue &&
+	git log --pretty=tformat:"%s" > conflict2 &&
+	test_cmp expect-conflict conflict2
+'
+
+cat >expect-conflict-p <<\EOF
+commit conflict3 conflict3~1 conflict3^2
+Merge branch 'third' into other
+commit conflict3^2 conflict3~4
+6
+commit conflict3~1 conflict3~2 conflict3~1^2
+Merge branch 'side' into other
+commit conflict3~1^2 conflict3~3
+5
+commit conflict3~2 conflict3~3
+4
+commit conflict3~3 conflict3~4
+3
+commit conflict3~4 conflict3~5
+conflict
+commit conflict3~5 conflict3~6
+2
+commit conflict3~6
+1
+EOF
+
+test_expect_success REBASE_P 'rebase -i -p --root with conflict (first part)' '
+	git checkout -b conflict3 other &&
+	test_must_fail git rebase -i -p --root --onto master &&
+	git ls-files -u | grep "B$"
+'
+
+test_expect_success 'fix the conflict' '
+	echo 3 > B &&
+	git add B
+'
+
+test_expect_success REBASE_P 'rebase -i -p --root with conflict (second part)' '
+	git rebase --continue &&
+	log_with_names conflict3 >out &&
+	test_cmp expect-conflict-p out
+'
+
+test_done