over 2GB. This variable forces the code path on any object larger than
<n> bytes.
-GIT_TEST_OE_DELTA_SIZE=<n> exercises the uncomon pack-objects code
+GIT_TEST_OE_DELTA_SIZE=<n> exercises the uncommon pack-objects code
path where deltas larger than this limit require extra memory
allocation for bookkeeping.
be written after every 'git commit' command, and overrides the
'core.commitGraph' setting to true.
+GIT_TEST_FSMONITOR=$PWD/t7519/fsmonitor-all exercises the fsmonitor
+code path for utilizing a file system monitor to speed up detecting
+new or changed files.
+
+GIT_TEST_INDEX_VERSION=<n> exercises the index read/write code path
+for the index version specified. Can be set to any valid version
+(currently 2, 3, or 4).
+
+GIT_TEST_PRELOAD_INDEX=<boolean> exercises the preload-index code path
+by overriding the minimum number of cache entries required per thread.
+
+GIT_TEST_INDEX_THREADS=<n> enables exercising the multi-threaded loading
+of the index for the whole test suite by bypassing the default number of
+cache entries and thread minimums. Setting this to 1 will make the
+index loading single threaded.
+
Naming Tests
------------
platform commands; just use '! cmd'. We are not in the business
of verifying that the world given to us sanely works.
+ - Don't feed the output of a git command to a pipe, as in:
+
+ git -C repo ls-files |
+ xargs -n 1 basename |
+ grep foo
+
+ which will discard git's exit code and may mask a crash. In the
+ above example, all exit codes are ignored except grep's.
+
+ Instead, write the output of that command to a temporary
+ file with ">" or assign it to a variable with "x=$(git ...)" rather
+ than pipe it.
+
+ - Don't use command substitution in a way that discards git's exit
+ code. When assigning to a variable, the exit code is not discarded,
+ e.g.:
+
+ x=$(git cat-file -p $sha) &&
+ ...
+
+ is OK because a crash in "git cat-file" will cause the "&&" chain
+ to fail, but:
+
+ test "refs/heads/foo" = "$(git symbolic-ref HEAD)"
+
+ is not OK and a crash in git could go undetected.
+
- Don't use perl without spelling it as "$PERL_PATH". This is to help
our friends on Windows where the platform Perl often adds CR before
the end of line, and they bundle Git with a version of Perl that
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
-------------