1 files changed, 116 insertions, 0 deletions
diff --git a/t/t3431-rebase-fork-point.sh b/t/t3431-rebase-fork-point.sh
new file mode 100755
index 0000000..0bb284d
--- /dev/null
+++ b/t/t3431-rebase-fork-point.sh
@@ -0,0 +1,116 @@
+#!/bin/sh
+#
+# Copyright (c) 2019 Denton Liu
+#
+
+test_description='git rebase --fork-point test'
+
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+
+TEST_PASSES_SANITIZE_LEAK=true
+. ./test-lib.sh
+
+# A---B---D---E    (main)
+#      \
+#       C*---F---G (side)
+#
+# C was formerly part of main but main was rewound to remove C
+#
+test_expect_success setup '
+	test_commit A &&
+	test_commit B &&
+	test_commit C &&
+	git branch -t side &&
+	git reset --hard HEAD^ &&
+	test_commit D &&
+	test_commit E &&
+	git checkout side &&
+	test_commit F &&
+	test_commit G
+'
+
+do_test_rebase () {
+	expected="$1" &&
+	shift &&
+	git checkout main &&
+	git reset --hard E &&
+	git checkout side &&
+	git reset --hard G &&
+	git rebase $* &&
+	test_write_lines $expected >expect &&
+	git log --pretty=%s >actual &&
+	test_cmp expect actual
+}
+
+test_rebase () {
+	expected="$1" &&
+	shift &&
+	test_expect_success "git rebase $*" "do_test_rebase '$expected' $*"
+}
+
+test_rebase 'G F E D B A'
+test_rebase 'G F D B A' --onto D
+test_rebase 'G F C B A' --keep-base
+test_rebase 'G F C E D B A' --no-fork-point
+test_rebase 'G F C D B A' --no-fork-point --onto D
+test_rebase 'G F C B A' --no-fork-point --keep-base
+
+test_rebase 'G F E D B A' --fork-point refs/heads/main
+test_rebase 'G F E D B A' --fork-point main
+
+test_rebase 'G F D B A' --fork-point --onto D refs/heads/main
+test_rebase 'G F D B A' --fork-point --onto D main
+
+test_rebase 'G F B A' --fork-point --keep-base refs/heads/main
+test_rebase 'G F B A' --fork-point --keep-base main
+
+test_rebase 'G F C E D B A' refs/heads/main
+test_rebase 'G F C E D B A' main
+
+test_rebase 'G F C D B A' --onto D refs/heads/main
+test_rebase 'G F C D B A' --onto D main
+
+test_rebase 'G F C B A' --keep-base refs/heads/main
+test_rebase 'G F C B A' --keep-base main
+
+test_expect_success 'git rebase --fork-point with ambigous refname' '
+	git checkout main &&
+	git checkout -b one &&
+	git checkout side &&
+	git tag one &&
+	test_must_fail git rebase --fork-point --onto D one
+'
+
+test_expect_success '--fork-point and --root both given' '
+	test_must_fail git rebase --fork-point --root 2>err &&
+	test_grep "cannot be used together" err
+'
+
+test_expect_success 'rebase.forkPoint set to false' '
+	test_config rebase.forkPoint false &&
+	do_test_rebase "G F C E D B A"
+'
+
+test_expect_success 'rebase.forkPoint set to false and then to true' '
+	test_config_global rebase.forkPoint false &&
+	test_config rebase.forkPoint true &&
+	do_test_rebase "G F E D B A"
+'
+
+test_expect_success 'rebase.forkPoint set to false and command line says --fork-point' '
+	test_config rebase.forkPoint false &&
+	do_test_rebase "G F E D B A" --fork-point
+'
+
+test_expect_success 'rebase.forkPoint set to true and command line says --no-fork-point' '
+	test_config rebase.forkPoint true &&
+	do_test_rebase "G F C E D B A" --no-fork-point
+'
+
+test_expect_success 'rebase.forkPoint set to true and --root given' '
+	test_config rebase.forkPoint true &&
+	git rebase --root
+'
+
+test_done