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diff --color-moved: add perf tests

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Add some tests so we can monitor changes to the performance of the
move detection code. The tests record the performance --color-moved
and --color-moved-ws=allow-indentation-change for a large diff and a
sequence of smaller diffs. The range of commits used for the large
diff can be customized by exporting TEST_REV_A and TEST_REV_B when
running the test.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Phillip Wood 2021-12-09 10:29:55 +00:00 committed by Junio C Hamano
parent ebf3c04b26
commit f73613ac33
1 changed files with 57 additions and 0 deletions
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57
t/perf/p4002-diff-color-moved.sh Executable file
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#!/bin/sh
test_description='Tests diff --color-moved performance'
. ./perf-lib.sh
test_perf_default_repo
# The endpoints of the diff can be customized by setting TEST_REV_A
# and TEST_REV_B in the environment when running this test.
rev="${TEST_REV_A:-v2.28.0}"
if ! rev_a="$(git rev-parse --quiet --verify "$rev")"
then
skip_all="skipping because '$rev' was not found. \
Use TEST_REV_A and TEST_REV_B to set the revs to use"
test_done
fi
rev="${TEST_REV_B:-v2.29.0}"
if ! rev_b="$(git rev-parse --quiet --verify "$rev")"
then
skip_all="skipping because '$rev' was not found. \
Use TEST_REV_A and TEST_REV_B to set the revs to use"
test_done
fi
GIT_PAGER_IN_USE=1
test_export GIT_PAGER_IN_USE rev_a rev_b
test_perf 'diff --no-color-moved --no-color-moved-ws large change' '
git diff --no-color-moved --no-color-moved-ws $rev_a $rev_b
'
test_perf 'diff --color-moved --no-color-moved-ws large change' '
git diff --color-moved=zebra --no-color-moved-ws $rev_a $rev_b
'
test_perf 'diff --color-moved-ws=allow-indentation-change large change' '
git diff --color-moved=zebra --color-moved-ws=allow-indentation-change \
$rev_a $rev_b
'
test_perf 'log --no-color-moved --no-color-moved-ws' '
git log --no-color-moved --no-color-moved-ws --no-merges --patch \
-n1000 $rev_b
'
test_perf 'log --color-moved --no-color-moved-ws' '
git log --color-moved=zebra --no-color-moved-ws --no-merges --patch \
-n1000 $rev_b
'
test_perf 'log --color-moved-ws=allow-indentation-change' '
git log --color-moved=zebra --color-moved-ws=allow-indentation-change \
--no-merges --patch -n1000 $rev_b
'
test_done