rebase -i: Abort cleanly if new base cannot be checked out

diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index b0b43c6d329cacf24fd9ea6d69320e13d34b154c..8d409156d24a11355c2fa124989527b69a683c53 100755 (executable)
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -22,12 +22,18 @@ set_fake_editor
 # | \
 # |   F - G - H                (branch1)
 # |     \
-#  \      I                    (branch2)
-#   \
-#     J - K - L - M            (no-conflict-branch)
+# |\      I                    (branch2)
+# | \
+# |   J - K - L - M            (no-conflict-branch)
+#  \
+#    N - O - P                 (no-ff-branch)
 #
 # where A, B, D and G all touch file1, and one, two, three, four all
 # touch file "conflict".
+#
+# WARNING: Modifications to the initial repository can change the SHA ID used
+# in the expect2 file for the 'stop on conflicting pick' test.
+
 
 test_expect_success 'setup' '
        test_commit A file1 &&
@@ -48,6 +54,11 @@ test_expect_success 'setup' '
        done &&
        git checkout -b no-conflict-branch A &&
        for n in J K L M
+       do
+               test_commit $n file$n
+       done &&
+       git checkout -b no-ff-branch A &&
+       for n in N O P
        do
                test_commit $n file$n
        done
@@ -113,7 +124,7 @@ cat > expect2 << EOF
 D
 =======
 G
->>>>>>> 51047de... G
+>>>>>>> 5d18e54... G
 EOF
 
 test_expect_success 'stop on conflicting pick' '
@@ -135,6 +146,16 @@ test_expect_success 'abort' '
        ! test -d .git/rebase-merge
 '
 
+test_expect_success 'abort with error when new base cannot be checked out' '
+       git rm --cached file1 &&
+       git commit -m "remove file in base" &&
+       test_must_fail git rebase -i master > output 2>&1 &&
+       grep "Untracked working tree file .file1. would be overwritten" \
+               output &&
+       ! test -d .git/rebase-merge &&
+       git reset --hard HEAD^
+'
+
 test_expect_success 'retain authorship' '
        echo A > file7 &&
        git add file7 &&
@@ -586,4 +607,21 @@ test_expect_success 'rebase while detaching HEAD' '
        test_must_fail git symbolic-ref HEAD
 '
 
+test_tick # Ensure that the rebased commits get a different timestamp.
+test_expect_success 'always cherry-pick with --no-ff' '
+       git checkout no-ff-branch &&
+       git tag original-no-ff-branch &&
+       git rebase -i --no-ff A &&
+       touch empty &&
+       for p in 0 1 2
+       do
+               test ! $(git rev-parse HEAD~$p) = $(git rev-parse original-no-ff-branch~$p) &&
+               git diff HEAD~$p original-no-ff-branch~$p > out &&
+               test_cmp empty out
+       done &&
+       test $(git rev-parse HEAD~3) = $(git rev-parse original-no-ff-branch~3) &&
+       git diff HEAD~3 original-no-ff-branch~3 > out &&
+       test_cmp empty out
+'
+
 test_done