combine-diff: coalesce lost lines optimally

diff --git a/t/t3301-notes.sh b/t/t3301-notes.sh
index 3448c23776dc867fa0542665f69ccb27ac564337..16de05aff941c73b3e5f5371bd4739959f679efa 100755 (executable)
--- a/t/t3301-notes.sh
+++ b/t/t3301-notes.sh
@@ -272,6 +272,44 @@ do
        '
 done
 
+test_expect_success 'setup alternate notes ref' '
+       git notes --ref=alternate add -m alternate
+'
+
+test_expect_success 'git log --notes shows default notes' '
+       git log -1 --notes >output &&
+       grep xyzzy output &&
+       ! grep alternate output
+'
+
+test_expect_success 'git log --notes=X shows only X' '
+       git log -1 --notes=alternate >output &&
+       ! grep xyzzy output &&
+       grep alternate output
+'
+
+test_expect_success 'git log --notes --notes=X shows both' '
+       git log -1 --notes --notes=alternate >output &&
+       grep xyzzy output &&
+       grep alternate output
+'
+
+test_expect_success 'git log --no-notes resets default state' '
+       git log -1 --notes --notes=alternate \
+               --no-notes --notes=alternate \
+               >output &&
+       ! grep xyzzy output &&
+       grep alternate output
+'
+
+test_expect_success 'git log --no-notes resets ref list' '
+       git log -1 --notes --notes=alternate \
+               --no-notes --notes \
+               >output &&
+       grep xyzzy output &&
+       ! grep alternate output
+'
+
 test_expect_success 'create -m notes (setup)' '
        : > a5 &&
        git add a5 &&
@@ -397,6 +435,81 @@ test_expect_success 'removing non-existing note should not create new commit' '
        test_cmp before_commit after_commit
 '
 
+test_expect_success 'removing more than one' '
+       before=$(git rev-parse --verify refs/notes/commits) &&
+       test_when_finished "git update-ref refs/notes/commits $before" &&
+
+       # We have only two -- add another and make sure it stays
+       git notes add -m "extra" &&
+       git notes list HEAD >after-removal-expect &&
+       git notes remove HEAD^^ HEAD^^^ &&
+       git notes list | sed -e "s/ .*//" >actual &&
+       test_cmp after-removal-expect actual
+'
+
+test_expect_success 'removing is atomic' '
+       before=$(git rev-parse --verify refs/notes/commits) &&
+       test_when_finished "git update-ref refs/notes/commits $before" &&
+       test_must_fail git notes remove HEAD^^ HEAD^^^ HEAD^ &&
+       after=$(git rev-parse --verify refs/notes/commits) &&
+       test "$before" = "$after"
+'
+
+test_expect_success 'removing with --ignore-missing' '
+       before=$(git rev-parse --verify refs/notes/commits) &&
+       test_when_finished "git update-ref refs/notes/commits $before" &&
+
+       # We have only two -- add another and make sure it stays
+       git notes add -m "extra" &&
+       git notes list HEAD >after-removal-expect &&
+       git notes remove --ignore-missing HEAD^^ HEAD^^^ HEAD^ &&
+       git notes list | sed -e "s/ .*//" >actual &&
+       test_cmp after-removal-expect actual
+'
+
+test_expect_success 'removing with --ignore-missing but bogus ref' '
+       before=$(git rev-parse --verify refs/notes/commits) &&
+       test_when_finished "git update-ref refs/notes/commits $before" &&
+       test_must_fail git notes remove --ignore-missing HEAD^^ HEAD^^^ NO-SUCH-COMMIT &&
+       after=$(git rev-parse --verify refs/notes/commits) &&
+       test "$before" = "$after"
+'
+
+test_expect_success 'remove reads from --stdin' '
+       before=$(git rev-parse --verify refs/notes/commits) &&
+       test_when_finished "git update-ref refs/notes/commits $before" &&
+
+       # We have only two -- add another and make sure it stays
+       git notes add -m "extra" &&
+       git notes list HEAD >after-removal-expect &&
+       git rev-parse HEAD^^ HEAD^^^ >input &&
+       git notes remove --stdin <input &&
+       git notes list | sed -e "s/ .*//" >actual &&
+       test_cmp after-removal-expect actual
+'
+
+test_expect_success 'remove --stdin is also atomic' '
+       before=$(git rev-parse --verify refs/notes/commits) &&
+       test_when_finished "git update-ref refs/notes/commits $before" &&
+       git rev-parse HEAD^^ HEAD^^^ HEAD^ >input &&
+       test_must_fail git notes remove --stdin <input &&
+       after=$(git rev-parse --verify refs/notes/commits) &&
+       test "$before" = "$after"
+'
+
+test_expect_success 'removing with --stdin --ignore-missing' '
+       before=$(git rev-parse --verify refs/notes/commits) &&
+       test_when_finished "git update-ref refs/notes/commits $before" &&
+
+       # We have only two -- add another and make sure it stays
+       git notes add -m "extra" &&
+       git notes list HEAD >after-removal-expect &&
+       git rev-parse HEAD^^ HEAD^^^ HEAD^ >input &&
+       git notes remove --ignore-missing --stdin <input &&
+       git notes list | sed -e "s/ .*//" >actual &&
+       test_cmp after-removal-expect actual
+'
+
 test_expect_success 'list notes with "git notes list"' '
        git notes list > output &&
        test_cmp expect output