[PATCH v3 0/3] Make test selection easier by specifying description substrings instead of just numeric counters

This patch series enables me to change

 ./t9999-my-test.sh --run=1-3,5,17,19

into

 ./t9999-my-test.sh --run=setup,rename,symlink

and have it pick out tests with "setup", "rename", or "symlink" in their description and run those. Saves me a lot of time, especially since numbers for tests aren't readily accessible. The easiest way for me to get the numbers corresponding to the tests I want to run, is to run all the tests and look at the output to match up the descriptions with their numbers -- thus defeating the point of selecting just a subset of the tests to run in the first place.

Changes since v2:

 * Use a glob rather than a regex for selecting tests
 * Touched up the commit message in patch 3 to mention that the TAP output
   line is still included for skipped tests and already included the word
   "skip" to highlight the fact that the test was skipped.
 * Fixed a bug where -run="!rename" would run all tests instead of skipping
   the ones with 'rename' in the description

Elijah Newren (3):
  test-lib: allow selecting tests by substring/glob with --run
  t6006, t6012: adjust tests to use 'setup' instead of synonyms
  test-lib: reduce verbosity of skipped tests

 t/README                     | 29 ++++++++++++++++---------
 t/t0000-basic.sh             | 41 ++++++++++++++++++++++--------------
 t/t6006-rev-list-format.sh   |  2 +-
 t/t6012-rev-list-simplify.sh |  2 +-
 t/test-lib.sh                | 17 +++++++++------
 5 files changed, 56 insertions(+), 35 deletions(-)

base-commit: d98273ba77e1ab9ec755576bc86c716a97bf59d7
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-878%2Fnewren%2Ftest-selection-v3
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-878/newren/test-selection-v3
Pull-Request: https://github.com/git/git/pull/878

Range-diff vs v2:

 1:  41e2528e83 ! 1:  9c8b6a1a94 test-lib: allow selecting tests by substring/regex with --run
     @@ Metadata
      Author: Elijah Newren <newren@gmail.com>
      
       ## Commit message ##
     -    test-lib: allow selecting tests by substring/regex with --run
     +    test-lib: allow selecting tests by substring/glob with --run
      
          Many of our test scripts have several "setup" tests.  It's a lot easier
          to say
     @@ t/README: For an individual test suite --run could be used to specify that
      -Optional prefix of '!' means that the test or a range of tests
      -should be excluded from the run.
      +The argument for --run, <test-selector>, is a list of description
     -+substrings or regexes or individual test numbers or ranges with an
     ++substrings or globs or individual test numbers or ranges with an
      +optional negation prefix (of '!') that define what tests in a test
      +suite to include (or exclude, if negated) in the run.  A range is two
      +numbers separated with a dash and matches a range of tests with both
     @@ t/README: test in the test suite except from 7 up to 11:
       
      +Sometimes there may be multiple tests with e.g. "setup" in their name
      +that are needed and rather than figuring out the number for all of them
     -+we can just use "setup" as a substring/regex to match against the test
     ++we can just use "setup" as a substring/glob to match against the test
      +description:
      +
      +    $ sh ./t0050-filesystem.sh --run=setup,9-11
     @@ t/test-lib.sh: match_test_selector_list () {
      -					echo "error: $title: invalid non-numeric in test" \
      -						"selector: '$orig_selector'" >&2
      -					exit 1
     -+					echo "$title" | grep -q "$selector" && return
     ++					case "$title" in *${selector}*)
     ++						include=$positive
     ++						;;
     ++					esac
      +					continue
       				fi
       		esac
 2:  8f1a4420f4 = 2:  6479d73603 t6006, t6012: adjust tests to use 'setup' instead of synonyms
 3:  85a4ca164a ! 3:  24f6febde6 test-lib: reduce verbosity of skipped tests
     @@ Commit message
          When using the --run flag to run just two or three tests from a test
          file which contains several dozen tests, having every skipped test print
          out dozens of lines of output for the test code for that skipped test
     -    adds up to hundreds or thousands of lines of irrelevant output that make
     -    it very hard to fish out the relevant results you were looking for.
     -    Simplify the output for skipped tests down to just showing the one-line
     -    descriptions.
     +    (in addition to the TAP output line) adds up to hundreds or thousands of
     +    lines of irrelevant output that make it very hard to fish out the
     +    relevant results you were looking for.  Simplify the output for skipped
     +    tests to remove this extra output, leaving only the TAP output line
     +    (i.e. the line reading "ok <number> # skip <test-description>", which
     +    already mentions that the test was "skip"ped).
      
          Signed-off-by: Elijah Newren <newren@gmail.com>