git/t/t4103-apply-binary.sh
Junio C Hamano 1725c4c64b Merge branch 'jk/apply-binary-hunk-parsing-fix' into maint
"git apply" miscounted the bytes and failed to read to the end of
binary hunks.

* jk/apply-binary-hunk-parsing-fix:
  apply: keep buffer/size pair in sync when parsing binary hunks
2021-10-12 13:51:37 -07:00

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#!/bin/sh
#
# Copyright (c) 2005 Junio C Hamano
#
test_description='git apply handling binary patches
'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
. ./test-lib.sh
test_expect_success 'setup' '
cat >file1 <<-\EOF &&
A quick brown fox jumps over the lazy dog.
A tiny little penguin runs around in circles.
There is a flag with Linux written on it.
A slow black-and-white panda just sits there,
munching on his bamboo.
EOF
cat file1 >file2 &&
cat file1 >file4 &&
git update-index --add --remove file1 file2 file4 &&
git commit -m "Initial Version" 2>/dev/null &&
git checkout -b binary &&
perl -pe "y/x/\000/" <file1 >file3 &&
cat file3 >file4 &&
git add file2 &&
perl -pe "y/\000/v/" <file3 >file1 &&
rm -f file2 &&
git update-index --add --remove file1 file2 file3 file4 &&
git commit -m "Second Version" &&
git diff-tree -p main binary >B.diff &&
git diff-tree -p -C main binary >C.diff &&
git diff-tree -p --binary main binary >BF.diff &&
git diff-tree -p --binary -C main binary >CF.diff &&
git diff-tree -p --full-index main binary >B-index.diff &&
git diff-tree -p -C --full-index main binary >C-index.diff &&
git diff-tree -p --binary --no-prefix main binary -- file3 >B0.diff &&
git init other-repo &&
(
cd other-repo &&
git fetch .. main &&
git reset --hard FETCH_HEAD
)
'
test_expect_success 'stat binary diff -- should not fail.' \
'git checkout main &&
git apply --stat --summary B.diff'
test_expect_success 'stat binary -p0 diff -- should not fail.' '
git checkout main &&
git apply --stat -p0 B0.diff
'
test_expect_success 'stat binary diff (copy) -- should not fail.' \
'git checkout main &&
git apply --stat --summary C.diff'
test_expect_success 'check binary diff -- should fail.' \
'git checkout main &&
test_must_fail git apply --check B.diff'
test_expect_success 'check binary diff (copy) -- should fail.' \
'git checkout main &&
test_must_fail git apply --check C.diff'
test_expect_success \
'check incomplete binary diff with replacement -- should fail.' '
git checkout main &&
test_must_fail git apply --check --allow-binary-replacement B.diff
'
test_expect_success \
'check incomplete binary diff with replacement (copy) -- should fail.' '
git checkout main &&
test_must_fail git apply --check --allow-binary-replacement C.diff
'
test_expect_success 'check binary diff with replacement.' \
'git checkout main &&
git apply --check --allow-binary-replacement BF.diff'
test_expect_success 'check binary diff with replacement (copy).' \
'git checkout main &&
git apply --check --allow-binary-replacement CF.diff'
# Now we start applying them.
do_reset () {
rm -f file? &&
git reset --hard &&
git checkout -f main
}
test_expect_success 'apply binary diff -- should fail.' \
'do_reset &&
test_must_fail git apply B.diff'
test_expect_success 'apply binary diff -- should fail.' \
'do_reset &&
test_must_fail git apply --index B.diff'
test_expect_success 'apply binary diff (copy) -- should fail.' \
'do_reset &&
test_must_fail git apply C.diff'
test_expect_success 'apply binary diff (copy) -- should fail.' \
'do_reset &&
test_must_fail git apply --index C.diff'
test_expect_success 'apply binary diff with full-index' '
do_reset &&
git apply B-index.diff
'
test_expect_success 'apply binary diff with full-index (copy)' '
do_reset &&
git apply C-index.diff
'
test_expect_success 'apply full-index binary diff in new repo' '
(cd other-repo &&
do_reset &&
test_must_fail git apply ../B-index.diff)
'
test_expect_success 'apply binary diff without replacement.' \
'do_reset &&
git apply BF.diff'
test_expect_success 'apply binary diff without replacement (copy).' \
'do_reset &&
git apply CF.diff'
test_expect_success 'apply binary diff.' \
'do_reset &&
git apply --allow-binary-replacement --index BF.diff &&
test -z "$(git diff --name-status binary)"'
test_expect_success 'apply binary diff (copy).' \
'do_reset &&
git apply --allow-binary-replacement --index CF.diff &&
test -z "$(git diff --name-status binary)"'
test_expect_success 'apply binary -p0 diff' '
do_reset &&
git apply -p0 --index B0.diff &&
test -z "$(git diff --name-status binary -- file3)"
'
test_expect_success 'reject truncated binary diff' '
do_reset &&
# this length is calculated to get us very close to
# the 8192-byte strbuf we will use to read in the patch.
test-tool genrandom foo 6205 >file1 &&
git diff --binary >patch &&
# truncate the patch at the second "literal" line,
# but exclude the trailing newline. We must use perl
# for this, since tools like "sed" cannot reliably
# produce output without the trailing newline.
perl -pe "
if (/^literal/ && \$count++ >= 1) {
chomp;
print;
exit 0;
}
" <patch >patch.trunc &&
do_reset &&
test_must_fail git apply patch.trunc
'
test_done