t/perf/p4220-log-grep-engines.sh

   1 #!/bin/sh
   2
   3 test_description="Comparison of git-log's --grep regex engines
   4
   5 Set GIT_PERF_4220_LOG_OPTS in the environment to pass options to
   6 git-grep. Make sure to include a leading space,
   7 e.g. GIT_PERF_4220_LOG_OPTS=' -i'. Some options to try:
   8
   9         -i
  10         --invert-grep
  11         -i --invert-grep
  12 "
  13
  14 . ./perf-lib.sh
  15
  16 test_perf_large_repo
  17 test_checkout_worktree
  18
  19 for pattern in \
  20         'how.to' \
  21         '^how to' \
  22         '[how] to' \
  23         '\(e.t[^ ]*\|v.ry\) rare' \
  24         'm\(ú\|u\)lt.b\(æ\|y\)te'
  25 do
  26         for engine in basic extended perl
  27         do
  28                 if test $engine != "basic"
  29                 then
  30                         # Poor man's basic -> extended converter.
  31                         pattern=$(echo $pattern | sed 's/\\//g')
  32                 fi
  33                 if test $engine = "perl" && ! test_have_prereq PCRE
  34                 then
  35                         prereq="PCRE"
  36                 else
  37                         prereq=""
  38                 fi
  39                 test_perf $prereq "$engine log$GIT_PERF_4220_LOG_OPTS --grep='$pattern'" "
  40                         git -c grep.patternType=$engine log --pretty=format:%h$GIT_PERF_4220_LOG_OPTS --grep='$pattern' >'out.$engine' || :
  41                 "
  42         done
  43
  44         test_expect_success "assert that all engines found the same for$GIT_PERF_4220_LOG_OPTS '$pattern'" '
  45                 test_cmp out.basic out.extended &&
  46                 if test_have_prereq PCRE
  47                 then
  48                         test_cmp out.basic out.perl
  49                 fi
  50         '
  51 done
  52
  53 test_done