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git-commit-vandalism/t/t4201-shortlog.sh
Taylor Blau 3dc95e09e1 shortlog: support arbitrary commit format --groups 
In addition to generating a shortlog based on committer, author, or the
identity in one or more specified trailers, it can be useful to generate
a shortlog based on an arbitrary commit format.

This can be used, for example, to generate a distribution of commit
activity over time, like so:

    $ git shortlog --group='%cd' --date='format:%Y-%m' -s v2.37.0..
       117  2022-06
       274  2022-07
       324  2022-08
       263  2022-09
         7  2022-10

Arbitrary commit formats can be used. In fact, `git shortlog`'s default
behavior (to count by commit authors) can be emulated as follows:

    $ git shortlog --group='%aN <%aE>' ...

and future patches will make the default behavior (as well as
`--committer`, and `--group=trailer:<trailer>`) special cases of the
more flexible `--group` option.

Note also that the SHORTLOG_GROUP_FORMAT enum value is used only to
designate that `--group:<format>` is in use when in stdin mode to
declare that the combination is invalid.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-24 14:48:05 -07:00

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#!/bin/sh
#
# Copyright (c) 2006 Johannes E. Schindelin
#
test_description='git shortlog
'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
. ./test-lib.sh
test_expect_success 'setup' '
test_tick &&
echo 1 >a1 &&
git add a1 &&
tree=$(git write-tree) &&
commit=$(printf "%s\n" "Test" "" | git commit-tree "$tree") &&
git update-ref HEAD "$commit" &&
echo 2 >a1 &&
git commit --quiet -m "This is a very, very long first line for the commit message to see if it is wrapped correctly" a1 &&
# test if the wrapping is still valid
# when replacing all is by treble clefs.
echo 3 >a1 &&
git commit --quiet -m "$(
echo "This is a very, very long first line for the commit message to see if it is wrapped correctly" |
sed "s/i/1234/g" |
tr 1234 "\360\235\204\236")" a1 &&
# now fsck up the utf8
git config i18n.commitencoding non-utf-8 &&
echo 4 >a1 &&
git commit --quiet -m "$(
echo "This is a very, very long first line for the commit message to see if it is wrapped correctly" |
sed "s/i/1234/g" |
tr 1234 "\370\235\204\236")" a1 &&
echo 5 >a1 &&
git commit --quiet -m "a 12 34 56 78" a1 &&
echo 6 >a1 &&
git commit --quiet -m "Commit by someone else" \
--author="Someone else <not!me>" a1 &&
cat >expect.template <<-\EOF
A U Thor (5):
SUBJECT
SUBJECT
SUBJECT
SUBJECT
SUBJECT
Someone else (1):
SUBJECT
EOF
'
fuzz() {
file=$1 &&
sed "
s/$OID_REGEX/OBJECT_NAME/g
s/$_x35/OBJID/g
s/^ \{6\}[CTa].*/ SUBJECT/g
s/^ \{8\}[^ ].*/ CONTINUATION/g
" <"$file" >"$file.fuzzy" &&
sed "/CONTINUATION/ d" <"$file.fuzzy"
}
test_expect_success 'default output format' '
git shortlog HEAD >log &&
fuzz log >log.predictable &&
test_cmp expect.template log.predictable
'
test_expect_success 'pretty format' '
sed s/SUBJECT/OBJECT_NAME/ expect.template >expect &&
git shortlog --format="%H" HEAD >log &&
fuzz log >log.predictable &&
test_cmp expect log.predictable
'
test_expect_success 'pretty format (with --date)' '
sed "s/SUBJECT/2005-04-07 OBJECT_NAME/" expect.template >expect &&
git shortlog --format="%ad %H" --date=short HEAD >log &&
fuzz log >log.predictable &&
test_cmp expect log.predictable
'
test_expect_success '--abbrev' '
sed s/SUBJECT/OBJID/ expect.template >expect &&
git shortlog --format="%h" --abbrev=35 HEAD >log &&
fuzz log >log.predictable &&
test_cmp expect log.predictable
'
test_expect_success 'output from user-defined format is re-wrapped' '
sed "s/SUBJECT/two lines/" expect.template >expect &&
git shortlog --format="two%nlines" HEAD >log &&
fuzz log >log.predictable &&
test_cmp expect log.predictable
'
test_expect_success !MINGW 'shortlog wrapping' '
cat >expect <<\EOF &&
A U Thor (5):
Test
This is a very, very long first line for the commit message to see if
it is wrapped correctly
Th𝄞s 𝄞s a very, very long f𝄞rst l𝄞ne for the comm𝄞t message to see 𝄞f
𝄞t 𝄞s wrapped correctly
Th<54><68><EFBFBD><EFBFBD>s <20><><EFBFBD><EFBFBD>s a very, very long f<><66><EFBFBD><EFBFBD>rst l<><6C><EFBFBD><EFBFBD>ne for the comm<6D><6D><EFBFBD><EFBFBD>t
message to see <20><><EFBFBD><EFBFBD>f <20><><EFBFBD><EFBFBD>t <20><><EFBFBD><EFBFBD>s wrapped correctly
a 12 34
56 78
Someone else (1):
Commit by someone else
EOF
git shortlog -w HEAD >out &&
test_cmp expect out
'
test_expect_success !MINGW 'shortlog from non-git directory' '
git log --no-expand-tabs HEAD >log &&
GIT_DIR=non-existing git shortlog -w <log >out &&
test_cmp expect out
'
test_expect_success !MINGW 'shortlog can read --format=raw output' '
git log --format=raw HEAD >log &&
GIT_DIR=non-existing git shortlog -w <log >out &&
test_cmp expect out
'
test_expect_success 'shortlog from non-git directory refuses extra arguments' '
test_must_fail env GIT_DIR=non-existing git shortlog foo 2>out &&
test_i18ngrep "too many arguments" out
'
test_expect_success 'shortlog should add newline when input line matches wraplen' '
cat >expect <<\EOF &&
A U Thor (2):
bbbbbbbbbbbbbbbbbb: bbbbbbbb bbb bbbb bbbbbbb bb bbbb bbb bbbbb bbbbbb
aaaaaaaaaaaaaaaaaaaaaa: aaaaaa aaaaaaaaaa aaaa aaaaaaaa aa aaaa aa aaa
EOF
git shortlog -w >out <<\EOF &&
commit 0000000000000000000000000000000000000001
Author: A U Thor <author@example.com>
Date: Thu Apr 7 15:14:13 2005 -0700
aaaaaaaaaaaaaaaaaaaaaa: aaaaaa aaaaaaaaaa aaaa aaaaaaaa aa aaaa aa aaa
commit 0000000000000000000000000000000000000002
Author: A U Thor <author@example.com>
Date: Thu Apr 7 15:14:13 2005 -0700
bbbbbbbbbbbbbbbbbb: bbbbbbbb bbb bbbb bbbbbbb bb bbbb bbb bbbbb bbbbbb
EOF
test_cmp expect out
'
iconvfromutf8toiso88591() {
printf "%s" "$*" | iconv -f UTF-8 -t ISO8859-1
}
DSCHO="Jöhännës \"Dschö\" Schindëlin"
DSCHOE="$DSCHO <Johannes.Schindelin@gmx.de>"
MSG1="set a1 to 2 and some non-ASCII chars: Äßø"
MSG2="set a1 to 3 and some non-ASCII chars: áæï"
cat > expect << EOF
$DSCHO (2):
$MSG1
$MSG2
EOF
test_expect_success !MINGW 'shortlog encoding' '
git reset --hard "$commit" &&
git config --unset i18n.commitencoding &&
echo 2 > a1 &&
git commit --quiet -m "$MSG1" --author="$DSCHOE" a1 &&
git config i18n.commitencoding "ISO8859-1" &&
echo 3 > a1 &&
git commit --quiet -m "$(iconvfromutf8toiso88591 "$MSG2")" \
--author="$(iconvfromutf8toiso88591 "$DSCHOE")" a1 &&
git config --unset i18n.commitencoding &&
git shortlog HEAD~2.. > out &&
test_cmp expect out'
test_expect_success 'shortlog with revision pseudo options' '
git shortlog --all &&
git shortlog --branches &&
git shortlog --exclude=refs/heads/m* --all
'
test_expect_success 'shortlog with --output=<file>' '
git shortlog --output=shortlog -1 main >output &&
test_must_be_empty output &&
test_line_count = 3 shortlog
'
test_expect_success 'shortlog --committer (internal)' '
git checkout --orphan side &&
git commit --allow-empty -m one &&
git commit --allow-empty -m two &&
GIT_COMMITTER_NAME="Sin Nombre" git commit --allow-empty -m three &&
cat >expect <<-\EOF &&
2 C O Mitter
1 Sin Nombre
EOF
git shortlog -nsc HEAD >actual &&
test_cmp expect actual
'
test_expect_success 'shortlog --committer (external)' '
git log --format=full | git shortlog -nsc >actual &&
test_cmp expect actual
'
test_expect_success '--group=committer is the same as --committer' '
git shortlog -ns --group=committer HEAD >actual &&
test_cmp expect actual
'
test_expect_success 'shortlog --group=trailer:signed-off-by' '
git commit --allow-empty -m foo -s &&
GIT_COMMITTER_NAME="SOB One" \
GIT_COMMITTER_EMAIL=sob@example.com \
git commit --allow-empty -m foo -s &&
git commit --allow-empty --amend --no-edit -s &&
cat >expect <<-\EOF &&
2 C O Mitter <committer@example.com>
1 SOB One <sob@example.com>
EOF
git shortlog -nse --group=trailer:signed-off-by HEAD >actual &&
test_cmp expect actual
'
test_expect_success 'shortlog --group=format' '
git shortlog -s --date="format:%Y" --group="format:%cN (%cd)" \
HEAD >actual &&
cat >expect <<-\EOF &&
4 C O Mitter (2005)
1 Sin Nombre (2005)
EOF
test_cmp expect actual
'
test_expect_success 'shortlog --group=<format> DWIM' '
git shortlog -s --date="format:%Y" --group="%cN (%cd)" HEAD >actual &&
test_cmp expect actual
'
test_expect_success 'shortlog bogus --group' '
test_must_fail git shortlog --group=bogus HEAD 2>err &&
grep "unknown group type" err
'
test_expect_success 'trailer idents are split' '
cat >expect <<-\EOF &&
2 C O Mitter
1 SOB One
EOF
git shortlog -ns --group=trailer:signed-off-by HEAD >actual &&
test_cmp expect actual
'
test_expect_success 'trailer idents are mailmapped' '
cat >expect <<-\EOF &&
2 C O Mitter
1 Another Name
EOF
echo "Another Name <sob@example.com>" >mail.map &&
git -c mailmap.file=mail.map shortlog -ns \
--group=trailer:signed-off-by HEAD >actual &&
test_cmp expect actual
'
test_expect_success 'shortlog de-duplicates trailers in a single commit' '
git commit --allow-empty -F - <<-\EOF &&
subject one
this message has two distinct values, plus a repeat
Repeated-trailer: Foo
Repeated-trailer: Bar
Repeated-trailer: Foo
EOF
git commit --allow-empty -F - <<-\EOF &&
subject two
similar to the previous, but without the second distinct value
Repeated-trailer: Foo
Repeated-trailer: Foo
EOF
cat >expect <<-\EOF &&
2 Foo
1 Bar
EOF
git shortlog -ns --group=trailer:repeated-trailer -2 HEAD >actual &&
test_cmp expect actual
'
test_expect_success 'shortlog can match multiple groups' '
git commit --allow-empty -F - <<-\EOF &&
subject one
this has two trailers that are distinct from the author; it will count
3 times in the output
Some-trailer: User A <a@example.com>
Another-trailer: User B <b@example.com>
EOF
git commit --allow-empty -F - <<-\EOF &&
subject two
this one has two trailers, one of which is a duplicate with the author;
it will only be counted once for them
Another-trailer: A U Thor <author@example.com>
Some-trailer: User B <b@example.com>
EOF
cat >expect <<-\EOF &&
2 A U Thor
2 User B
1 User A
EOF
git shortlog -ns \
--group=author \
--group=trailer:some-trailer \
--group=trailer:another-trailer \
-2 HEAD >actual &&
test_cmp expect actual
'
test_expect_success 'shortlog can match multiple format groups' '
GIT_COMMITTER_NAME="$GIT_AUTHOR_NAME" \
git commit --allow-empty -m "identical names" &&
test_tick &&
cat >expect <<-\EOF &&
2 A U Thor
1 C O Mitter
EOF
git shortlog -ns --group="%cn" --group="%an" -2 HEAD >actual &&
test_cmp expect actual
'
test_expect_success 'set up option selection tests' '
git commit --allow-empty -F - <<-\EOF
subject
body
Trailer-one: value-one
Trailer-two: value-two
EOF
'
test_expect_success '--no-group resets group list to author' '
cat >expect <<-\EOF &&
1 A U Thor
EOF
git shortlog -ns \
--group=committer \
--group=trailer:trailer-one \
--no-group \
-1 HEAD >actual &&
test_cmp expect actual
'
test_expect_success '--no-group resets trailer list' '
cat >expect <<-\EOF &&
1 value-two
EOF
git shortlog -ns \
--group=trailer:trailer-one \
--no-group \
--group=trailer:trailer-two \
-1 HEAD >actual &&
test_cmp expect actual
'
test_expect_success 'stdin with multiple groups reports error' '
git log >log &&
test_must_fail git shortlog --group=author --group=committer <log
'
test_done
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