path where deltas larger than this limit require extra memory
allocation for bookkeeping.
+GIT_TEST_VALIDATE_INDEX_CACHE_ENTRIES=<boolean> checks that cache-tree
+records are valid when the index is written out or after a merge. This
+is mostly to catch missing invalidation. Default is true.
+
+GIT_TEST_COMMIT_GRAPH=<boolean>, when true, forces the commit-graph to
+be written after every 'git commit' command, and overrides the
+'core.commitGraph' setting to true.
+
Naming Tests
------------
the symbolic link in the file system and a part that does; then only
the latter part need be protected by a SYMLINKS prerequisite (see below).
+ - test_oid_init
+
+ This function loads facts and useful object IDs related to the hash
+ algorithm(s) in use from the files in t/oid-info.
+
+ - test_oid_cache
+
+ This function reads per-hash algorithm information from standard
+ input (usually a heredoc) in the format described in
+ t/oid-info/README. This is useful for test-specific values, such as
+ object IDs, which must vary based on the hash algorithm.
+
+ Certain fixed values, such as hash sizes and common placeholder
+ object IDs, can be loaded with test_oid_init (described above).
+
+ - test_oid <key>
+
+ This function looks up a value for the hash algorithm in use, based
+ on the key given. The value must have been loaded using
+ test_oid_init or test_oid_cache. Providing an unknown key is an
+ error.
+
Prerequisites
-------------