t5562: replace /dev/zero with a pipe from generate_zero_bytes

diff --git a/t/README b/t/README
index 25864ec88384850342f3e6122f82470424e49953..1326fd7505fde3a9e34fef1e197623c8d409d6ff 100644 (file)
--- a/t/README
+++ b/t/README
@@ -170,6 +170,15 @@ appropriately before running "make".
        implied by other options like --valgrind and
        GIT_TEST_INSTALLED.
 
+--no-bin-wrappers::
+       By default, the test suite uses the wrappers in
+       `../bin-wrappers/` to execute `git` and friends. With this option,
+       `../git` and friends are run directly. This is not recommended
+       in general, as the wrappers contain safeguards to ensure that no
+       files from an installed Git are used, but can speed up test runs
+       especially on platforms where running shell scripts is expensive
+       (most notably, Windows).
+
 --root=<directory>::
        Create "trash" directories used to store all temporary data during
        testing under <directory>, instead of the t/ directory.
@@ -358,6 +367,10 @@ 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_PACK_SPARSE=<boolean> if enabled will default the pack-objects
+builtin to use the sparse object walk. This can still be overridden by
+the --no-sparse command-line argument.
+
 GIT_TEST_PRELOAD_INDEX=<boolean> exercises the preload-index code path
 by overriding the minimum number of cache entries required per thread.