git checkout side &&
git reset --hard K &&
+ set_fake_editor &&
test_must_fail git rebase -i --onto master...side J
'
+test_expect_success 'rebase --keep-base --onto incompatible' '
+ test_must_fail git rebase --keep-base --onto master...
+'
+
+test_expect_success 'rebase --keep-base --root incompatible' '
+ test_must_fail git rebase --keep-base --root
+'
+
+test_expect_success 'rebase --keep-base master from topic' '
+ git reset --hard &&
+ git checkout topic &&
+ git reset --hard G &&
+
+ git rebase --keep-base master &&
+ git rev-parse C >base.expect &&
+ git merge-base master HEAD >base.actual &&
+ test_cmp base.expect base.actual &&
+
+ git rev-parse HEAD~2 >actual &&
+ git rev-parse C^0 >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'rebase --keep-base master from side' '
+ git reset --hard &&
+ git checkout side &&
+ git reset --hard K &&
+
+ test_must_fail git rebase --keep-base master
+'
+
+test_expect_success 'rebase -i --keep-base master from topic' '
+ git reset --hard &&
+ git checkout topic &&
+ git reset --hard G &&
+
+ set_fake_editor &&
+ EXPECT_COUNT=2 git rebase -i --keep-base master &&
+ git rev-parse C >base.expect &&
+ git merge-base master HEAD >base.actual &&
+ test_cmp base.expect base.actual &&
+
+ git rev-parse HEAD~2 >actual &&
+ git rev-parse C^0 >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'rebase -i --keep-base master from side' '
+ git reset --hard &&
+ git checkout side &&
+ git reset --hard K &&
+
+ set_fake_editor &&
+ test_must_fail git rebase -i --keep-base master
+'
+
test_done