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git/t/t6023-merge-file.sh
Jonathan Nieder 4bb0936206 merge-file --diff3: add a label for ancestor
git merge-file --diff3 can be used to present conflicts hunks
including text from the common ancestor.

The added information is helpful for resolving a merge by hand, and
merge tools can usually grok it because it looks like output from
diff3 -m.  However, ‘diff3’ includes a label for the merge base on the
||||||| line and some tools cannot parse conflict hunks without such a
label.  Write the base-name as passed in a -L option (or the name of
the ancestor file by default) on that line.

git rerere will not have trouble parsing this output, since instead of
looking for a newline, it looks for whitespace after the |||||||
marker.  Since rerere includes its own code for recreating conflict
hunks, conflict identifiers are unaffected.  No other code in git tries
to parse conflict hunks.

Requested-by: Stefan Monnier <monnier@iro.umontreal.ca>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-20 20:36:11 -07:00

256 lines
6.3 KiB
Bash
Executable File

#!/bin/sh
test_description='RCS merge replacement: merge-file'
. ./test-lib.sh
cat > orig.txt << EOF
Dominus regit me,
et nihil mihi deerit.
In loco pascuae ibi me collocavit,
super aquam refectionis educavit me;
animam meam convertit,
deduxit me super semitas jusitiae,
propter nomen suum.
EOF
cat > new1.txt << EOF
Dominus regit me,
et nihil mihi deerit.
In loco pascuae ibi me collocavit,
super aquam refectionis educavit me;
animam meam convertit,
deduxit me super semitas jusitiae,
propter nomen suum.
Nam et si ambulavero in medio umbrae mortis,
non timebo mala, quoniam tu mecum es:
virga tua et baculus tuus ipsa me consolata sunt.
EOF
cat > new2.txt << EOF
Dominus regit me, et nihil mihi deerit.
In loco pascuae ibi me collocavit,
super aquam refectionis educavit me;
animam meam convertit,
deduxit me super semitas jusitiae,
propter nomen suum.
EOF
cat > new3.txt << EOF
DOMINUS regit me,
et nihil mihi deerit.
In loco pascuae ibi me collocavit,
super aquam refectionis educavit me;
animam meam convertit,
deduxit me super semitas jusitiae,
propter nomen suum.
EOF
cat > new4.txt << EOF
Dominus regit me, et nihil mihi deerit.
In loco pascuae ibi me collocavit,
super aquam refectionis educavit me;
animam meam convertit,
deduxit me super semitas jusitiae,
EOF
printf "propter nomen suum." >> new4.txt
test_expect_success 'merge with no changes' '
cp orig.txt test.txt &&
git merge-file test.txt orig.txt orig.txt &&
test_cmp test.txt orig.txt
'
cp new1.txt test.txt
test_expect_success "merge without conflict" \
"git merge-file test.txt orig.txt new2.txt"
cp new1.txt test.txt
test_expect_success "merge without conflict (--quiet)" \
"git merge-file --quiet test.txt orig.txt new2.txt"
cp new1.txt test2.txt
test_expect_success "merge without conflict (missing LF at EOF)" \
"git merge-file test2.txt orig.txt new2.txt"
test_expect_success "merge result added missing LF" \
"test_cmp test.txt test2.txt"
cp test.txt backup.txt
test_expect_success "merge with conflicts" \
"test_must_fail git merge-file test.txt orig.txt new3.txt"
cat > expect.txt << EOF
<<<<<<< test.txt
Dominus regit me, et nihil mihi deerit.
=======
DOMINUS regit me,
et nihil mihi deerit.
>>>>>>> new3.txt
In loco pascuae ibi me collocavit,
super aquam refectionis educavit me;
animam meam convertit,
deduxit me super semitas jusitiae,
propter nomen suum.
Nam et si ambulavero in medio umbrae mortis,
non timebo mala, quoniam tu mecum es:
virga tua et baculus tuus ipsa me consolata sunt.
EOF
test_expect_success "expected conflict markers" "test_cmp test.txt expect.txt"
cp backup.txt test.txt
test_expect_success "merge with conflicts, using -L" \
"test_must_fail git merge-file -L 1 -L 2 test.txt orig.txt new3.txt"
cat > expect.txt << EOF
<<<<<<< 1
Dominus regit me, et nihil mihi deerit.
=======
DOMINUS regit me,
et nihil mihi deerit.
>>>>>>> new3.txt
In loco pascuae ibi me collocavit,
super aquam refectionis educavit me;
animam meam convertit,
deduxit me super semitas jusitiae,
propter nomen suum.
Nam et si ambulavero in medio umbrae mortis,
non timebo mala, quoniam tu mecum es:
virga tua et baculus tuus ipsa me consolata sunt.
EOF
test_expect_success "expected conflict markers, with -L" \
"test_cmp test.txt expect.txt"
sed "s/ tu / TU /" < new1.txt > new5.txt
test_expect_success "conflict in removed tail" \
"test_must_fail git merge-file -p orig.txt new1.txt new5.txt > out"
cat > expect << EOF
Dominus regit me,
et nihil mihi deerit.
In loco pascuae ibi me collocavit,
super aquam refectionis educavit me;
animam meam convertit,
deduxit me super semitas jusitiae,
propter nomen suum.
<<<<<<< orig.txt
=======
Nam et si ambulavero in medio umbrae mortis,
non timebo mala, quoniam TU mecum es:
virga tua et baculus tuus ipsa me consolata sunt.
>>>>>>> new5.txt
EOF
test_expect_success "expected conflict markers" "test_cmp expect out"
test_expect_success 'binary files cannot be merged' '
test_must_fail git merge-file -p \
orig.txt "$TEST_DIRECTORY"/test4012.png new1.txt 2> merge.err &&
grep "Cannot merge binary files" merge.err
'
sed -e "s/deerit.\$/deerit;/" -e "s/me;\$/me./" < new5.txt > new6.txt
sed -e "s/deerit.\$/deerit,/" -e "s/me;\$/me,/" < new5.txt > new7.txt
test_expect_success 'MERGE_ZEALOUS simplifies non-conflicts' '
test_must_fail git merge-file -p new6.txt new5.txt new7.txt > output &&
test 1 = $(grep ======= < output | wc -l)
'
sed -e 's/deerit./&%%%%/' -e "s/locavit,/locavit;/"< new6.txt | tr '%' '\012' > new8.txt
sed -e 's/deerit./&%%%%/' -e "s/locavit,/locavit --/" < new7.txt | tr '%' '\012' > new9.txt
test_expect_success 'ZEALOUS_ALNUM' '
test_must_fail git merge-file -p \
new8.txt new5.txt new9.txt > merge.out &&
test 1 = $(grep ======= < merge.out | wc -l)
'
cat >expect <<\EOF
Dominus regit me,
<<<<<<< new8.txt
et nihil mihi deerit;
In loco pascuae ibi me collocavit;
super aquam refectionis educavit me.
||||||| new5.txt
et nihil mihi deerit.
In loco pascuae ibi me collocavit,
super aquam refectionis educavit me;
=======
et nihil mihi deerit,
In loco pascuae ibi me collocavit --
super aquam refectionis educavit me,
>>>>>>> new9.txt
animam meam convertit,
deduxit me super semitas jusitiae,
propter nomen suum.
Nam et si ambulavero in medio umbrae mortis,
non timebo mala, quoniam TU mecum es:
virga tua et baculus tuus ipsa me consolata sunt.
EOF
test_expect_success '"diff3 -m" style output (1)' '
test_must_fail git merge-file -p --diff3 \
new8.txt new5.txt new9.txt >actual &&
test_cmp expect actual
'
test_expect_success '"diff3 -m" style output (2)' '
git config merge.conflictstyle diff3 &&
test_must_fail git merge-file -p \
new8.txt new5.txt new9.txt >actual &&
test_cmp expect actual
'
cat >expect <<\EOF
Dominus regit me,
<<<<<<<<<< new8.txt
et nihil mihi deerit;
In loco pascuae ibi me collocavit;
super aquam refectionis educavit me.
|||||||||| new5.txt
et nihil mihi deerit.
In loco pascuae ibi me collocavit,
super aquam refectionis educavit me;
==========
et nihil mihi deerit,
In loco pascuae ibi me collocavit --
super aquam refectionis educavit me,
>>>>>>>>>> new9.txt
animam meam convertit,
deduxit me super semitas jusitiae,
propter nomen suum.
Nam et si ambulavero in medio umbrae mortis,
non timebo mala, quoniam TU mecum es:
virga tua et baculus tuus ipsa me consolata sunt.
EOF
test_expect_success 'marker size' '
test_must_fail git merge-file -p --marker-size=10 \
new8.txt new5.txt new9.txt >actual &&
test_cmp expect actual
'
test_done