mirror of
https://github.com/git/git
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4f7fd79e57
Make it possible to use other diff algorithms than the 'myers' default algorithm, when using the 'git merge-file' command, to help avoid spurious conflicts by selecting a more recent algorithm such as 'histogram', for instance when using 'git merge-file' as part of a custom merge driver. Signed-off-by: Antonin Delpeuch <antonin@delpeuch.eu> Reviewed-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
572 lines
14 KiB
Bash
Executable file
572 lines
14 KiB
Bash
Executable file
#!/bin/sh
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test_description='RCS merge replacement: merge-file'
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TEST_PASSES_SANITIZE_LEAK=true
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. ./test-lib.sh
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test_expect_success 'setup' '
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cat >orig.txt <<-\EOF &&
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Dominus regit me,
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et nihil mihi deerit.
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In loco pascuae ibi me collocavit,
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super aquam refectionis educavit me;
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animam meam convertit,
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deduxit me super semitas jusitiae,
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propter nomen suum.
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EOF
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cat >new1.txt <<-\EOF &&
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Dominus regit me,
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et nihil mihi deerit.
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In loco pascuae ibi me collocavit,
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super aquam refectionis educavit me;
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animam meam convertit,
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deduxit me super semitas jusitiae,
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propter nomen suum.
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Nam et si ambulavero in medio umbrae mortis,
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non timebo mala, quoniam tu mecum es:
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virga tua et baculus tuus ipsa me consolata sunt.
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EOF
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cat >new2.txt <<-\EOF &&
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Dominus regit me, et nihil mihi deerit.
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In loco pascuae ibi me collocavit,
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super aquam refectionis educavit me;
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animam meam convertit,
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deduxit me super semitas jusitiae,
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propter nomen suum.
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EOF
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cat >new3.txt <<-\EOF &&
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DOMINUS regit me,
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et nihil mihi deerit.
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In loco pascuae ibi me collocavit,
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super aquam refectionis educavit me;
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animam meam convertit,
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deduxit me super semitas jusitiae,
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propter nomen suum.
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EOF
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cat >new4.txt <<-\EOF &&
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Dominus regit me, et nihil mihi deerit.
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In loco pascuae ibi me collocavit,
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super aquam refectionis educavit me;
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animam meam convertit,
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deduxit me super semitas jusitiae,
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EOF
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printf "propter nomen suum." >>new4.txt &&
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cat >base.c <<-\EOF &&
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int f(int x, int y)
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{
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if (x == 0)
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{
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return y;
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}
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return x;
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}
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int g(size_t u)
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{
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while (u < 30)
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{
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u++;
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}
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return u;
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}
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EOF
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cat >ours.c <<-\EOF &&
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int g(size_t u)
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{
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while (u < 30)
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{
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u++;
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}
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return u;
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}
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int h(int x, int y, int z)
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{
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if (z == 0)
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{
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return x;
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}
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return y;
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}
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EOF
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cat >theirs.c <<-\EOF
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int f(int x, int y)
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{
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if (x == 0)
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{
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return y;
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}
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return x;
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}
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int g(size_t u)
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{
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while (u > 34)
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{
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u--;
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}
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return u;
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}
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EOF
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'
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test_expect_success 'merge with no changes' '
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cp orig.txt test.txt &&
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git merge-file test.txt orig.txt orig.txt &&
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test_cmp test.txt orig.txt
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'
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test_expect_success 'merge with no changes with --object-id' '
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git add orig.txt &&
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git merge-file -p --object-id :orig.txt :orig.txt :orig.txt >actual &&
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test_cmp actual orig.txt
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'
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test_expect_success "merge without conflict" '
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cp new1.txt test.txt &&
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git merge-file test.txt orig.txt new2.txt
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'
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test_expect_success 'merge without conflict with --object-id' '
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git add orig.txt new2.txt &&
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git merge-file --object-id :orig.txt :orig.txt :new2.txt >actual &&
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git rev-parse :new2.txt >expected &&
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test_cmp actual expected
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'
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test_expect_success 'can accept object ID with --object-id' '
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git merge-file --object-id $(test_oid empty_blob) $(test_oid empty_blob) :new2.txt >actual &&
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git rev-parse :new2.txt >expected &&
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test_cmp actual expected
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'
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test_expect_success 'works in subdirectory' '
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mkdir dir &&
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cp new1.txt dir/a.txt &&
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cp orig.txt dir/o.txt &&
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cp new2.txt dir/b.txt &&
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( cd dir && git merge-file a.txt o.txt b.txt ) &&
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test_path_is_missing a.txt
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'
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test_expect_success "merge without conflict (--quiet)" '
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cp new1.txt test.txt &&
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git merge-file --quiet test.txt orig.txt new2.txt
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'
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test_expect_failure "merge without conflict (missing LF at EOF)" '
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cp new1.txt test2.txt &&
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git merge-file test2.txt orig.txt new4.txt
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'
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test_expect_failure "merge result added missing LF" '
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test_cmp test.txt test2.txt
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'
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test_expect_success "merge without conflict (missing LF at EOF, away from change in the other file)" '
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cp new4.txt test3.txt &&
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git merge-file --quiet test3.txt new2.txt new3.txt
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'
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test_expect_success "merge does not add LF away of change" '
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cat >expect.txt <<-\EOF &&
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DOMINUS regit me,
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et nihil mihi deerit.
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In loco pascuae ibi me collocavit,
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super aquam refectionis educavit me;
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animam meam convertit,
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deduxit me super semitas jusitiae,
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EOF
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printf "propter nomen suum." >>expect.txt &&
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test_cmp expect.txt test3.txt
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'
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test_expect_success "merge with conflicts" '
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cp test.txt backup.txt &&
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test_must_fail git merge-file test.txt orig.txt new3.txt
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'
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test_expect_success "expected conflict markers" '
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cat >expect.txt <<-\EOF &&
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<<<<<<< test.txt
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Dominus regit me, et nihil mihi deerit.
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=======
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DOMINUS regit me,
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et nihil mihi deerit.
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>>>>>>> new3.txt
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In loco pascuae ibi me collocavit,
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super aquam refectionis educavit me;
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animam meam convertit,
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deduxit me super semitas jusitiae,
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propter nomen suum.
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Nam et si ambulavero in medio umbrae mortis,
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non timebo mala, quoniam tu mecum es:
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virga tua et baculus tuus ipsa me consolata sunt.
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EOF
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test_cmp expect.txt test.txt
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'
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test_expect_success "merge with conflicts with --object-id" '
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git add backup.txt orig.txt new3.txt &&
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test_must_fail git merge-file -p --object-id :backup.txt :orig.txt :new3.txt >actual &&
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sed -e "s/<< test.txt/<< :backup.txt/" \
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-e "s/>> new3.txt/>> :new3.txt/" \
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expect.txt >expect &&
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test_cmp expect actual &&
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test_must_fail git merge-file --object-id :backup.txt :orig.txt :new3.txt >oid &&
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git cat-file blob "$(cat oid)" >actual &&
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test_cmp expect actual
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'
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test_expect_success "merge with conflicts with --object-id with labels" '
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git add backup.txt orig.txt new3.txt &&
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test_must_fail git merge-file -p --object-id \
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-L test.txt -L orig.txt -L new3.txt \
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:backup.txt :orig.txt :new3.txt >actual &&
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test_cmp expect.txt actual &&
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test_must_fail git merge-file --object-id \
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-L test.txt -L orig.txt -L new3.txt \
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:backup.txt :orig.txt :new3.txt >oid &&
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git cat-file blob "$(cat oid)" >actual &&
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test_cmp expect.txt actual
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'
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test_expect_success "merge conflicting with --ours" '
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cp backup.txt test.txt &&
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cat >expect.txt <<-\EOF &&
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Dominus regit me, et nihil mihi deerit.
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In loco pascuae ibi me collocavit,
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super aquam refectionis educavit me;
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animam meam convertit,
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deduxit me super semitas jusitiae,
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propter nomen suum.
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Nam et si ambulavero in medio umbrae mortis,
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non timebo mala, quoniam tu mecum es:
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virga tua et baculus tuus ipsa me consolata sunt.
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EOF
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git merge-file --ours test.txt orig.txt new3.txt &&
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test_cmp expect.txt test.txt
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'
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test_expect_success "merge conflicting with --theirs" '
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cp backup.txt test.txt &&
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cat >expect.txt <<-\EOF &&
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DOMINUS regit me,
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et nihil mihi deerit.
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In loco pascuae ibi me collocavit,
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super aquam refectionis educavit me;
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animam meam convertit,
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deduxit me super semitas jusitiae,
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propter nomen suum.
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Nam et si ambulavero in medio umbrae mortis,
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non timebo mala, quoniam tu mecum es:
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virga tua et baculus tuus ipsa me consolata sunt.
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EOF
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git merge-file --theirs test.txt orig.txt new3.txt &&
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test_cmp expect.txt test.txt
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'
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test_expect_success "merge conflicting with --union" '
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cp backup.txt test.txt &&
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cat >expect.txt <<-\EOF &&
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Dominus regit me, et nihil mihi deerit.
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DOMINUS regit me,
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et nihil mihi deerit.
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In loco pascuae ibi me collocavit,
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super aquam refectionis educavit me;
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animam meam convertit,
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deduxit me super semitas jusitiae,
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propter nomen suum.
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Nam et si ambulavero in medio umbrae mortis,
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non timebo mala, quoniam tu mecum es:
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virga tua et baculus tuus ipsa me consolata sunt.
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EOF
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git merge-file --union test.txt orig.txt new3.txt &&
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test_cmp expect.txt test.txt
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'
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test_expect_success "merge with conflicts, using -L" '
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cp backup.txt test.txt &&
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test_must_fail git merge-file -L 1 -L 2 test.txt orig.txt new3.txt
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'
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test_expect_success "expected conflict markers, with -L" '
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cat >expect.txt <<-\EOF &&
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<<<<<<< 1
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Dominus regit me, et nihil mihi deerit.
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=======
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DOMINUS regit me,
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et nihil mihi deerit.
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>>>>>>> new3.txt
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In loco pascuae ibi me collocavit,
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super aquam refectionis educavit me;
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animam meam convertit,
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deduxit me super semitas jusitiae,
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propter nomen suum.
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Nam et si ambulavero in medio umbrae mortis,
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non timebo mala, quoniam tu mecum es:
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virga tua et baculus tuus ipsa me consolata sunt.
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EOF
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test_cmp expect.txt test.txt
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'
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test_expect_success "conflict in removed tail" '
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sed "s/ tu / TU /" <new1.txt >new5.txt &&
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test_must_fail git merge-file -p orig.txt new1.txt new5.txt >out
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'
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test_expect_success "expected conflict markers" '
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cat >expect <<-\EOF &&
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Dominus regit me,
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et nihil mihi deerit.
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In loco pascuae ibi me collocavit,
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super aquam refectionis educavit me;
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animam meam convertit,
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deduxit me super semitas jusitiae,
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propter nomen suum.
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<<<<<<< orig.txt
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=======
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Nam et si ambulavero in medio umbrae mortis,
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non timebo mala, quoniam TU mecum es:
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virga tua et baculus tuus ipsa me consolata sunt.
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>>>>>>> new5.txt
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EOF
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test_cmp expect out
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'
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test_expect_success 'binary files cannot be merged' '
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test_must_fail git merge-file -p \
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orig.txt "$TEST_DIRECTORY"/test-binary-1.png new1.txt 2> merge.err &&
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grep "Cannot merge binary files" merge.err
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'
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test_expect_success 'binary files cannot be merged with --object-id' '
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cp "$TEST_DIRECTORY"/test-binary-1.png . &&
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git add orig.txt new1.txt test-binary-1.png &&
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test_must_fail git merge-file --object-id \
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:orig.txt :test-binary-1.png :new1.txt 2> merge.err &&
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grep "Cannot merge binary files" merge.err
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'
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test_expect_success 'MERGE_ZEALOUS simplifies non-conflicts' '
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sed -e "s/deerit.\$/deerit;/" -e "s/me;\$/me./" <new5.txt >new6.txt &&
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sed -e "s/deerit.\$/deerit,/" -e "s/me;\$/me,/" <new5.txt >new7.txt &&
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test_must_fail git merge-file -p new6.txt new5.txt new7.txt > output &&
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test 1 = $(grep ======= <output | wc -l)
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'
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test_expect_success 'ZEALOUS_ALNUM' '
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sed -e "s/deerit./&%%%%/" -e "s/locavit,/locavit;/" <new6.txt | tr % "\012" >new8.txt &&
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sed -e "s/deerit./&%%%%/" -e "s/locavit,/locavit --/" <new7.txt | tr % "\012" >new9.txt &&
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test_must_fail git merge-file -p \
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new8.txt new5.txt new9.txt >merge.out &&
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test 1 = $(grep ======= <merge.out | wc -l)
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'
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test_expect_success '"diff3 -m" style output (1)' '
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cat >expect <<-\EOF &&
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Dominus regit me,
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<<<<<<< new8.txt
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et nihil mihi deerit;
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In loco pascuae ibi me collocavit;
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super aquam refectionis educavit me.
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||||||| new5.txt
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et nihil mihi deerit.
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In loco pascuae ibi me collocavit,
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super aquam refectionis educavit me;
|
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=======
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et nihil mihi deerit,
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In loco pascuae ibi me collocavit --
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super aquam refectionis educavit me,
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>>>>>>> new9.txt
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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:
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virga tua et baculus tuus ipsa me consolata sunt.
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EOF
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test_must_fail git merge-file -p --diff3 \
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new8.txt new5.txt new9.txt >actual &&
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test_cmp expect actual
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'
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test_expect_success '"diff3 -m" style output (2)' '
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git config merge.conflictstyle diff3 &&
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test_must_fail git merge-file -p \
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new8.txt new5.txt new9.txt >actual &&
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test_cmp expect actual
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'
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test_expect_success 'marker size' '
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cat >expect <<-\EOF &&
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Dominus regit me,
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<<<<<<<<<< new8.txt
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et nihil mihi deerit;
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In loco pascuae ibi me collocavit;
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super aquam refectionis educavit me.
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|||||||||| new5.txt
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et nihil mihi deerit.
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In loco pascuae ibi me collocavit,
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super aquam refectionis educavit me;
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==========
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et nihil mihi deerit,
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|
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In loco pascuae ibi me collocavit --
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super aquam refectionis educavit me,
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>>>>>>>>>> new9.txt
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animam meam convertit,
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deduxit me super semitas jusitiae,
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propter nomen suum.
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Nam et si ambulavero in medio umbrae mortis,
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non timebo mala, quoniam TU mecum es:
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virga tua et baculus tuus ipsa me consolata sunt.
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EOF
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test_must_fail git merge-file -p --marker-size=10 \
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new8.txt new5.txt new9.txt >actual &&
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test_cmp expect actual
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'
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test_expect_success 'conflict at EOF without LF resolved by --ours' '
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printf "line1\nline2\nline3" >nolf-orig.txt &&
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printf "line1\nline2\nline3x" >nolf-diff1.txt &&
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printf "line1\nline2\nline3y" >nolf-diff2.txt &&
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git merge-file -p --ours nolf-diff1.txt nolf-orig.txt nolf-diff2.txt >output.txt &&
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printf "line1\nline2\nline3x" >expect.txt &&
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test_cmp expect.txt output.txt
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'
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test_expect_success 'conflict at EOF without LF resolved by --theirs' '
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git merge-file -p --theirs nolf-diff1.txt nolf-orig.txt nolf-diff2.txt >output.txt &&
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printf "line1\nline2\nline3y" >expect.txt &&
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test_cmp expect.txt output.txt
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'
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test_expect_success 'conflict at EOF without LF resolved by --union' '
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git merge-file -p --union nolf-diff1.txt nolf-orig.txt nolf-diff2.txt >output.txt &&
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printf "line1\nline2\nline3x\nline3y" >expect.txt &&
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test_cmp expect.txt output.txt
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'
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test_expect_success 'conflict sections match existing line endings' '
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printf "1\\r\\n2\\r\\n3" >crlf-orig.txt &&
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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_expect_success '--object-id fails without repository' '
|
|
empty="$(test_oid empty_blob)" &&
|
|
nongit test_must_fail git merge-file --object-id $empty $empty $empty 2>err &&
|
|
grep "not a git repository" err
|
|
'
|
|
|
|
test_expect_success 'merging C files with "myers" diff algorithm creates some spurious conflicts' '
|
|
cat >expect.c <<-\EOF &&
|
|
int g(size_t u)
|
|
{
|
|
while (u < 30)
|
|
{
|
|
u++;
|
|
}
|
|
return u;
|
|
}
|
|
|
|
int h(int x, int y, int z)
|
|
{
|
|
<<<<<<< ours.c
|
|
if (z == 0)
|
|
||||||| base.c
|
|
while (u < 30)
|
|
=======
|
|
while (u > 34)
|
|
>>>>>>> theirs.c
|
|
{
|
|
<<<<<<< ours.c
|
|
return x;
|
|
||||||| base.c
|
|
u++;
|
|
=======
|
|
u--;
|
|
>>>>>>> theirs.c
|
|
}
|
|
return y;
|
|
}
|
|
EOF
|
|
|
|
test_must_fail git merge-file -p --diff3 --diff-algorithm myers ours.c base.c theirs.c >myers_output.c &&
|
|
test_cmp expect.c myers_output.c
|
|
'
|
|
|
|
test_expect_success 'merging C files with "histogram" diff algorithm avoids some spurious conflicts' '
|
|
cat >expect.c <<-\EOF &&
|
|
int g(size_t u)
|
|
{
|
|
while (u > 34)
|
|
{
|
|
u--;
|
|
}
|
|
return u;
|
|
}
|
|
|
|
int h(int x, int y, int z)
|
|
{
|
|
if (z == 0)
|
|
{
|
|
return x;
|
|
}
|
|
return y;
|
|
}
|
|
EOF
|
|
|
|
git merge-file -p --diff3 --diff-algorithm histogram ours.c base.c theirs.c >histogram_output.c &&
|
|
test_cmp expect.c histogram_output.c
|
|
'
|
|
|
|
test_done
|