)
'
+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 &&
+ test_line_count = 3 $graphdir/commit-graph-chain
+'
+
+graph_git_behavior 'graph exists' merge/octopus commits/12
+
test_done