[PATCH v2 0/2] tests: some touchups related to the --stress feature

If my mistake using --stress= instead of --stress-limit= is any indication, then the current options are very confusing.

This is my attempt at making them less confusing.

Changes since v1:

 * Now the patches actually adjust the documentation according to the
   changes ;-)

Johannes Schindelin (2):
  tests: let --stress-limit=<N> imply --stress
  tests: introduce --stress-jobs=<N>

 t/README      | 8 +++++---
 t/test-lib.sh | 9 ++++++++-
 2 files changed, 13 insertions(+), 4 deletions(-)

base-commit: 7d661e5ed16dca303d7898f5ab0cc2ffc69e0499
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-155%2Fdscho%2Fstress-test-extra-v2
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-155/dscho/stress-test-extra-v2
Pull-Request: https://github.com/gitgitgadget/git/pull/155

Range-diff vs v1:

 1:  16c6508c4b ! 1:  fbe773c22a tests: let --stress-limit=<N> imply --stress
     @@ -8,6 +8,19 @@
      
          Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
      
     + diff --git a/t/README b/t/README
     + --- a/t/README
     + +++ b/t/README
     +@@
     + --stress-limit=<N>::
     + 	When combined with --stress run the test script repeatedly
     + 	this many times in each of the parallel jobs or until one of
     +-	them fails, whichever comes first.
     ++	them fails, whichever comes first. Implies `--stress`.
     + 
     + You can also set the GIT_TEST_INSTALLED environment variable to
     + the bindir of an existing git installation to test that installation.
     +
       diff --git a/t/test-lib.sh b/t/test-lib.sh
       --- a/t/test-lib.sh
       +++ b/t/test-lib.sh
 2:  281d3f1d19 ! 2:  074628c22b tests: introduce --stress-jobs=<N>
     @@ -13,6 +13,33 @@
      
          Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
      
     + diff --git a/t/README b/t/README
     + --- a/t/README
     + +++ b/t/README
     +@@
     + 	variable to "1" or "0", respectively.
     + 
     + --stress::
     +---stress=<N>::
     + 	Run the test script repeatedly in multiple parallel jobs until
     + 	one of them fails.  Useful for reproducing rare failures in
     + 	flaky tests.  The number of parallel jobs is, in order of
     +-	precedence: <N>, or the value of the GIT_TEST_STRESS_LOAD
     ++	precedence: the value of the GIT_TEST_STRESS_LOAD
     + 	environment variable, or twice the number of available
     + 	processors (as shown by the 'getconf' utility),	or 8.
     + 	Implies `--verbose -x --immediate` to get the most information
     +@@
     + 	'.stress-<nr>' suffix, and the trash directory of the failed
     + 	test job is renamed to end with a '.stress-failed' suffix.
     + 
     ++--stress-jobs=<N>::
     ++	Override the number of parallel jobs. Implies `--stress`.
     ++
     + --stress-limit=<N>::
     + 	When combined with --stress run the test script repeatedly
     + 	this many times in each of the parallel jobs or until one of
     +
       diff --git a/t/test-lib.sh b/t/test-lib.sh
       --- a/t/test-lib.sh
       +++ b/t/test-lib.sh