userdiff: add a builtin pattern for dts files

diff --git a/t/t5324-split-commit-graph.sh b/t/t5324-split-commit-graph.sh
index 3df90ae58f8beec94f7af080e399b2fda78874e9..99f4ef4c19dff028facac6da810c973b3a82a4fc 100755 (executable)
--- a/t/t5324-split-commit-graph.sh
+++ b/t/t5324-split-commit-graph.sh
@@ -163,7 +163,12 @@ test_expect_success 'create fork and chain across alternate' '
                test_line_count = 1 graph-files &&
                git -c core.commitGraph=true  rev-list HEAD >expect &&
                git -c core.commitGraph=false rev-list HEAD >actual &&
-               test_cmp expect actual
+               test_cmp expect actual &&
+               test_commit 14 &&
+               git commit-graph write --reachable --split --object-dir=.git/objects/ &&
+               test_line_count = 3 $graphdir/commit-graph-chain &&
+               ls $graphdir/graph-*.graph >graph-files &&
+               test_line_count = 1 graph-files
        )
 '
 
@@ -216,10 +221,23 @@ test_expect_success 'test merge stragety constants' '
        )
 '
 
+test_expect_success 'remove commit-graph-chain file after flattening' '
+       git clone . flatten &&
+       (
+               cd flatten &&
+               test_line_count = 2 $graphdir/commit-graph-chain &&
+               git commit-graph write --reachable &&
+               test_path_is_missing $graphdir/commit-graph-chain &&
+               ls $graphdir >graph-files &&
+               test_line_count = 0 graph-files
+       )
+'
+
 corrupt_file() {
        file=$1
        pos=$2
        data="${3:-\0}"
+       chmod a+w "$file" &&
        printf "$data" | dd of="$file" bs=1 seek="$pos" conv=notrunc
 }
 
@@ -278,4 +296,50 @@ test_expect_success 'verify after commit-graph-chain corruption' '
        )
 '
 
+test_expect_success 'verify across alternates' '
+       git clone --no-hardlinks . verify-alt &&
+       (
+               cd verify-alt &&
+               rm -rf $graphdir &&
+               altdir="$(pwd)/../.git/objects" &&
+               echo "$altdir" >.git/objects/info/alternates &&
+               git commit-graph verify --object-dir="$altdir/" &&
+               test_commit extra &&
+               git commit-graph write --reachable --split &&
+               tip_file=$graphdir/graph-$(tail -n 1 $graphdir/commit-graph-chain).graph &&
+               corrupt_file "$tip_file" 100 "\01" &&
+               test_must_fail git commit-graph verify --shallow 2>test_err &&
+               grep -v "^+" test_err >err &&
+               test_i18ngrep "commit-graph has incorrect fanout value" err
+       )
+'
+
+test_expect_success 'add octopus merge' '
+       git reset --hard commits/10 &&
+       git merge commits/3 commits/4 &&
+       git branch merge/octopus &&
+       git commit-graph write --reachable --split &&
+       git commit-graph verify 2>err &&
+       test_line_count = 3 err &&
+       test_i18ngrep ! warning err &&
+       test_line_count = 3 $graphdir/commit-graph-chain
+'
+
+graph_git_behavior 'graph exists' merge/octopus commits/12
+
+test_expect_success 'split across alternate where alternate is not split' '
+       git commit-graph write --reachable &&
+       test_path_is_file .git/objects/info/commit-graph &&
+       cp .git/objects/info/commit-graph . &&
+       git clone --no-hardlinks . alt-split &&
+       (
+               cd alt-split &&
+               echo "$(pwd)"/../.git/objects >.git/objects/info/alternates &&
+               test_commit 18 &&
+               git commit-graph write --reachable --split &&
+               test_line_count = 1 $graphdir/commit-graph-chain
+       ) &&
+       test_cmp commit-graph .git/objects/info/commit-graph
+'
+
 test_done