git-commit-vandalism/t/t6403-merge-file.sh
Elijah Newren 919df31955 Collect merge-related tests to t64xx
The tests for the merge machinery are spread over several places.
Collect them into t64xx for simplicity.  Some notes:

t60[234]*.sh:
  Merge tests started in t602*, overgrew bisect and remote tracking
  tests in t6030, t6040, and t6041, and nearly overtook replace tests
  in t6050.  This made picking out relevant tests that I wanted to run
  in a tighter loop slightly more annoying for years.

t303*.sh:
  These started out as tests for the 'merge-recursive' toplevel command,
  but did not restrict to that and had lots of overlap with the
  underlying merge machinery.
t7405, t7613:
  submodule-specific merge logic started out in submodule.c but was
  moved to merge-recursive.c in commit 18cfc08866 ("submodule.c: move
  submodule merging to merge-recursive.c", 2018-05-15).  Since these
  tests are about the logic found in the merge machinery, moving these
  tests to be with the merge tests makes sense.

t7607, t7609:
  Having tests spread all over the place makes it more likely that
  additional tests related to a certain piece of logic grow in all those
  other places.  Much like t303*.sh, these two tests were about the
  underlying merge machinery rather than outer levels.

Tests that were NOT moved:

t76[01]*.sh:
  Other than the four tests mentioned above, the remaining tests in
  t76[01]*.sh are related to non-recursive merge strategies, parameter
  parsing, and other stuff associated with the highlevel builtin/merge.c
  rather than the recursive merge machinery.

t3[45]*.sh:
  The rebase testcases in t34*.sh also test the merge logic pretty
  heavily; sometimes changes I make only trigger failures in the rebase
  tests.  The rebase tests are already nicely coupled together, though,
  and I didn't want to mess that up.  Similar comments apply for the
  cherry-pick tests in t35*.sh.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-10 15:59:00 -07:00

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#!/bin/sh
test_description='RCS merge replacement: merge-file'
. ./test-lib.sh
test_expect_success 'setup' '
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
'
test_expect_success "merge without conflict" '
cp new1.txt test.txt &&
git merge-file test.txt orig.txt new2.txt
'
test_expect_success 'works in subdirectory' '
mkdir dir &&
cp new1.txt dir/a.txt &&
cp orig.txt dir/o.txt &&
cp new2.txt dir/b.txt &&
( cd dir && git merge-file a.txt o.txt b.txt ) &&
test_path_is_missing a.txt
'
test_expect_success "merge without conflict (--quiet)" '
cp new1.txt test.txt &&
git merge-file --quiet test.txt orig.txt new2.txt
'
test_expect_failure "merge without conflict (missing LF at EOF)" '
cp new1.txt test2.txt &&
git merge-file test2.txt orig.txt new4.txt
'
test_expect_failure "merge result added missing LF" '
test_cmp test.txt test2.txt
'
test_expect_success "merge without conflict (missing LF at EOF, away from change in the other file)" '
cp new4.txt test3.txt &&
git merge-file --quiet test3.txt new2.txt new3.txt
'
test_expect_success "merge does not add LF away of change" '
cat >expect.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." >>expect.txt &&
test_cmp expect.txt test3.txt
'
test_expect_success "merge with conflicts" '
cp test.txt backup.txt &&
test_must_fail git merge-file test.txt orig.txt new3.txt
'
test_expect_success "expected conflict markers" '
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_cmp expect.txt test.txt
'
test_expect_success "merge conflicting with --ours" '
cp backup.txt test.txt &&
cat >expect.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
git merge-file --ours test.txt orig.txt new3.txt &&
test_cmp expect.txt test.txt
'
test_expect_success "merge conflicting with --theirs" '
cp backup.txt test.txt &&
cat >expect.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
git merge-file --theirs test.txt orig.txt new3.txt &&
test_cmp expect.txt test.txt
'
test_expect_success "merge conflicting with --union" '
cp backup.txt test.txt &&
cat >expect.txt <<-\EOF &&
Dominus regit me, et nihil mihi deerit.
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
git merge-file --union test.txt orig.txt new3.txt &&
test_cmp expect.txt test.txt
'
test_expect_success "merge with conflicts, using -L" '
cp backup.txt test.txt &&
test_must_fail git merge-file -L 1 -L 2 test.txt orig.txt new3.txt
'
test_expect_success "expected conflict markers, with -L" '
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_cmp expect.txt test.txt
'
test_expect_success "conflict in removed tail" '
sed "s/ tu / TU /" <new1.txt >new5.txt &&
test_must_fail git merge-file -p orig.txt new1.txt new5.txt >out
'
test_expect_success "expected conflict markers" '
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_cmp expect out
'
test_expect_success 'binary files cannot be merged' '
test_must_fail git merge-file -p \
orig.txt "$TEST_DIRECTORY"/test-binary-1.png new1.txt 2> merge.err &&
grep "Cannot merge binary files" merge.err
'
test_expect_success 'MERGE_ZEALOUS simplifies non-conflicts' '
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_must_fail git merge-file -p new6.txt new5.txt new7.txt > output &&
test 1 = $(grep ======= <output | wc -l)
'
test_expect_success 'ZEALOUS_ALNUM' '
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_must_fail git merge-file -p \
new8.txt new5.txt new9.txt >merge.out &&
test 1 = $(grep ======= <merge.out | wc -l)
'
test_expect_success '"diff3 -m" style output (1)' '
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_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
'
test_expect_success 'marker size' '
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_must_fail git merge-file -p --marker-size=10 \
new8.txt new5.txt new9.txt >actual &&
test_cmp expect actual
'
test_expect_success 'conflict at EOF without LF resolved by --ours' '
printf "line1\nline2\nline3" >nolf-orig.txt &&
printf "line1\nline2\nline3x" >nolf-diff1.txt &&
printf "line1\nline2\nline3y" >nolf-diff2.txt &&
git merge-file -p --ours nolf-diff1.txt nolf-orig.txt nolf-diff2.txt >output.txt &&
printf "line1\nline2\nline3x" >expect.txt &&
test_cmp expect.txt output.txt
'
test_expect_success 'conflict at EOF without LF resolved by --theirs' '
git merge-file -p --theirs nolf-diff1.txt nolf-orig.txt nolf-diff2.txt >output.txt &&
printf "line1\nline2\nline3y" >expect.txt &&
test_cmp expect.txt output.txt
'
test_expect_success 'conflict at EOF without LF resolved by --union' '
git merge-file -p --union nolf-diff1.txt nolf-orig.txt nolf-diff2.txt >output.txt &&
printf "line1\nline2\nline3x\nline3y" >expect.txt &&
test_cmp expect.txt output.txt
'
test_expect_success 'conflict sections match existing line endings' '
printf "1\\r\\n2\\r\\n3" >crlf-orig.txt &&
printf "1\\r\\n2\\r\\n4" >crlf-diff1.txt &&
printf "1\\r\\n2\\r\\n5" >crlf-diff2.txt &&
test_must_fail git -c core.eol=crlf merge-file -p \
crlf-diff1.txt crlf-orig.txt crlf-diff2.txt >crlf.txt &&
test $(tr "\015" Q <crlf.txt | grep "^[<=>].*Q$" | wc -l) = 3 &&
test $(tr "\015" Q <crlf.txt | grep "[345]Q$" | wc -l) = 3 &&
test_must_fail git -c core.eol=crlf merge-file -p \
nolf-diff1.txt nolf-orig.txt nolf-diff2.txt >nolf.txt &&
test $(tr "\015" Q <nolf.txt | grep "^[<=>].*Q$" | wc -l) = 0
'
test_done