git/t/perf/p4220-log-grep-engines.sh
Neeraj Singh 5dccd9155f t/perf: add iteration setup mechanism to perf-lib
Tests that affect the repo in stateful ways are easier to write if we
can run setup steps outside of the measured portion of perf iteration.

This change adds a "--setup 'setup-script'" parameter to test_perf. To
make invocations easier to understand, I also moved the prerequisites to
a new --prereq parameter.

The setup facility will be used in the upcoming perf tests for batch
mode, but it already helps in some existing tests, like t5302 and t7820.

Signed-off-by: Neeraj Singh <neerajsi@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-04-06 13:13:26 -07:00

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#!/bin/sh
test_description="Comparison of git-log's --grep regex engines
Set GIT_PERF_4220_LOG_OPTS in the environment to pass options to
git-grep. Make sure to include a leading space,
e.g. GIT_PERF_4220_LOG_OPTS=' -i'. Some options to try:
-i
--invert-grep
-i --invert-grep
"
. ./perf-lib.sh
test_perf_large_repo
test_checkout_worktree
for pattern in \
'how.to' \
'^how to' \
'[how] to' \
'\(e.t[^ ]*\|v.ry\) rare' \
'm\(ú\|u\)lt.b\(æ\|y\)te'
do
for engine in basic extended perl
do
if test $engine != "basic"
then
# Poor man's basic -> extended converter.
pattern=$(echo $pattern | sed 's/\\//g')
fi
if test $engine = "perl" && ! test_have_prereq PCRE
then
prereq="PCRE"
else
prereq=""
fi
test_perf "$engine log$GIT_PERF_4220_LOG_OPTS --grep='$pattern'" \
--prereq "$prereq" "
git -c grep.patternType=$engine log --pretty=format:%h$GIT_PERF_4220_LOG_OPTS --grep='$pattern' >'out.$engine' || :
"
done
test_expect_success "assert that all engines found the same for$GIT_PERF_4220_LOG_OPTS '$pattern'" '
test_cmp out.basic out.extended &&
if test_have_prereq PCRE
then
test_cmp out.basic out.perl
fi
'
done
test_done