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p0071: measure sorting of already sorted and reversed files

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Check if sorting takes advantage of already sorted or reversed content,
or if that corner case actually decreases performance, like it would for
a simplistic quicksort implementation.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
René Scharfe 2021-10-01 11:19:04 +02:00 committed by Junio C Hamano
parent f1ed4ce9e3
commit 84edc40676
1 changed files with 22 additions and 7 deletions
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29
t/perf/p0071-sort.sh
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@ -11,16 +11,31 @@ test_expect_success 'setup' '
git cat-file --batch >unsorted
'
test_perf 'sort(1)' '
sort <unsorted >expect
test_perf 'sort(1) unsorted' '
sort <unsorted >sorted
'
test_perf 'string_list_sort()' '
test-tool string-list sort <unsorted >actual
test_expect_success 'reverse' '
sort -r <unsorted >reversed
'
test_expect_success 'string_list_sort() sorts like sort(1)' '
test_cmp_bin expect actual
'
for file in sorted reversed
do
test_perf "sort(1) $file" "
sort <$file >actual
"
done
for file in unsorted sorted reversed
do
test_perf "string_list_sort() $file" "
test-tool string-list sort <$file >actual
"
test_expect_success "string_list_sort() $file sorts like sort(1)" "
test_cmp_bin sorted actual
"
done
test_done