mirror of
https://github.com/git/git.git
synced 2024-11-25 02:44:48 +08:00
40f846c35c
Damien Gérard highlights an interesting problem. Some p4
repositories end up with symlinks that have an empty target. It
is not possible to create this with current p4, but they do
indeed exist.
The effect in git p4 is that "p4 print" on the symlink returns an
empty string, confusing the curret symlink-handling code.
Such broken repositories cause problems in p4 as well, even with
no git involved. In p4, syncing to a change that includes a
bogus symlink causes errors:
//depot/empty-symlink - updating /home/me/p4/empty-symlink
rename: /home/me/p4/empty-symlink: No such file or directory
and leaves no symlink.
In git, replicate the p4 behavior by ignoring these bad symlinks.
If, in a later p4 revision, the symlink happens to point to
something non-null, the symlink will be replaced properly.
Add a big test for all this too.
This happens to be a regression introduced by 1292df1 (git-p4:
Fix occasional truncation of symlink contents., 2013-08-08) and
appeared first in 1.8.5. But it shows up only in p4 repositories
of dubious character, so can wait for a proper release.
Tested-by: Damien Gérard <damien@iwi.me>
Signed-off-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
341 lines
8.1 KiB
Bash
Executable File
341 lines
8.1 KiB
Bash
Executable File
#!/bin/sh
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test_description='git p4 filetype tests'
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. ./lib-git-p4.sh
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test_expect_success 'start p4d' '
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start_p4d
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'
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#
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# This series of tests checks newline handling Both p4 and
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# git store newlines as \n, and have options to choose how
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# newlines appear in checked-out files.
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#
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test_expect_success 'p4 client newlines, unix' '
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(
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cd "$cli" &&
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p4 client -o | sed "/LineEnd/s/:.*/:unix/" | p4 client -i &&
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printf "unix\ncrlf\n" >f-unix &&
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printf "unix\r\ncrlf\r\n" >f-unix-as-crlf &&
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p4 add -t text f-unix &&
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p4 submit -d f-unix &&
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# LineEnd: unix; should be no change after sync
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cp f-unix f-unix-orig &&
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p4 sync -f &&
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test_cmp f-unix-orig f-unix &&
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# make sure stored in repo as unix newlines
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# use sed to eat python-appended newline
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p4 -G print //depot/f-unix | marshal_dump data 2 |\
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sed \$d >f-unix-p4-print &&
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test_cmp f-unix-orig f-unix-p4-print &&
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# switch to win, make sure lf -> crlf
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p4 client -o | sed "/LineEnd/s/:.*/:win/" | p4 client -i &&
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p4 sync -f &&
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test_cmp f-unix-as-crlf f-unix
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)
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'
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test_expect_success 'p4 client newlines, win' '
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(
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cd "$cli" &&
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p4 client -o | sed "/LineEnd/s/:.*/:win/" | p4 client -i &&
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printf "win\r\ncrlf\r\n" >f-win &&
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printf "win\ncrlf\n" >f-win-as-lf &&
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p4 add -t text f-win &&
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p4 submit -d f-win &&
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# LineEnd: win; should be no change after sync
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cp f-win f-win-orig &&
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p4 sync -f &&
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test_cmp f-win-orig f-win &&
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# make sure stored in repo as unix newlines
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# use sed to eat python-appened newline
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p4 -G print //depot/f-win | marshal_dump data 2 |\
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sed \$d >f-win-p4-print &&
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test_cmp f-win-as-lf f-win-p4-print &&
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# switch to unix, make sure lf -> crlf
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p4 client -o | sed "/LineEnd/s/:.*/:unix/" | p4 client -i &&
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p4 sync -f &&
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test_cmp f-win-as-lf f-win
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)
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'
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test_expect_success 'ensure blobs store only lf newlines' '
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test_when_finished cleanup_git &&
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(
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cd "$git" &&
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git init &&
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git p4 sync //depot@all &&
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# verify the files in .git are stored only with newlines
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o=$(git ls-tree p4/master -- f-unix | cut -f1 | cut -d\ -f3) &&
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git cat-file blob $o >f-unix-blob &&
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test_cmp "$cli"/f-unix-orig f-unix-blob &&
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o=$(git ls-tree p4/master -- f-win | cut -f1 | cut -d\ -f3) &&
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git cat-file blob $o >f-win-blob &&
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test_cmp "$cli"/f-win-as-lf f-win-blob &&
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rm f-unix-blob f-win-blob
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)
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'
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test_expect_success 'gitattributes setting eol=lf produces lf newlines' '
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test_when_finished cleanup_git &&
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(
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# checkout the files and make sure core.eol works as planned
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cd "$git" &&
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git init &&
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echo "* eol=lf" >.gitattributes &&
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git p4 sync //depot@all &&
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git checkout -b master p4/master &&
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test_cmp "$cli"/f-unix-orig f-unix &&
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test_cmp "$cli"/f-win-as-lf f-win
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)
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'
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test_expect_success 'gitattributes setting eol=crlf produces crlf newlines' '
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test_when_finished cleanup_git &&
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(
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# checkout the files and make sure core.eol works as planned
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cd "$git" &&
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git init &&
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echo "* eol=crlf" >.gitattributes &&
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git p4 sync //depot@all &&
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git checkout -b master p4/master &&
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test_cmp "$cli"/f-unix-as-crlf f-unix &&
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test_cmp "$cli"/f-win-orig f-win
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)
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'
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test_expect_success 'crlf cleanup' '
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(
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cd "$cli" &&
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rm f-unix-orig f-unix-as-crlf &&
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rm f-win-orig f-win-as-lf &&
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p4 client -o | sed "/LineEnd/s/:.*/:unix/" | p4 client -i &&
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p4 sync -f
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)
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'
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test_expect_success 'utf-16 file create' '
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(
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cd "$cli" &&
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# p4 saves this verbatim
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printf "three\nline\ntext\n" >f-ascii &&
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p4 add -t text f-ascii &&
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# p4 adds \377\376 header
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cp f-ascii f-ascii-as-utf16 &&
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p4 add -t utf16 f-ascii-as-utf16 &&
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# p4 saves this exactly as iconv produced it
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printf "three\nline\ntext\n" | iconv -f ascii -t utf-16 >f-utf16 &&
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p4 add -t utf16 f-utf16 &&
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# this also is unchanged
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cp f-utf16 f-utf16-as-text &&
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p4 add -t text f-utf16-as-text &&
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p4 submit -d "f files" &&
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# force update of client files
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p4 sync -f
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)
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'
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test_expect_success 'utf-16 file test' '
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test_when_finished cleanup_git &&
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git p4 clone --dest="$git" //depot@all &&
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(
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cd "$git" &&
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test_cmp "$cli/f-ascii" f-ascii &&
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test_cmp "$cli/f-ascii-as-utf16" f-ascii-as-utf16 &&
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test_cmp "$cli/f-utf16" f-utf16 &&
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test_cmp "$cli/f-utf16-as-text" f-utf16-as-text
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)
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'
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test_expect_success 'keyword file create' '
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(
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cd "$cli" &&
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printf "id\n\$Id\$\n\$Author\$\ntext\n" >k-text-k &&
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p4 add -t text+k k-text-k &&
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cp k-text-k k-text-ko &&
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p4 add -t text+ko k-text-ko &&
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cat k-text-k | iconv -f ascii -t utf-16 >k-utf16-k &&
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p4 add -t utf16+k k-utf16-k &&
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cp k-utf16-k k-utf16-ko &&
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p4 add -t utf16+ko k-utf16-ko &&
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p4 submit -d "k files" &&
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p4 sync -f
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)
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'
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build_smush() {
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cat >k_smush.py <<-\EOF &&
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import re, sys
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sys.stdout.write(re.sub(r'(?i)\$(Id|Header|Author|Date|DateTime|Change|File|Revision):[^$]*\$', r'$\1$', sys.stdin.read()))
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EOF
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cat >ko_smush.py <<-\EOF
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import re, sys
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sys.stdout.write(re.sub(r'(?i)\$(Id|Header):[^$]*\$', r'$\1$', sys.stdin.read()))
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EOF
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}
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test_expect_success 'keyword file test' '
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build_smush &&
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test_when_finished rm -f k_smush.py ko_smush.py &&
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test_when_finished cleanup_git &&
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git p4 clone --dest="$git" //depot@all &&
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(
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cd "$git" &&
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# text, ensure unexpanded
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"$PYTHON_PATH" "$TRASH_DIRECTORY/k_smush.py" <"$cli/k-text-k" >cli-k-text-k-smush &&
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test_cmp cli-k-text-k-smush k-text-k &&
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"$PYTHON_PATH" "$TRASH_DIRECTORY/ko_smush.py" <"$cli/k-text-ko" >cli-k-text-ko-smush &&
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test_cmp cli-k-text-ko-smush k-text-ko &&
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# utf16, even though p4 expands keywords, git p4 does not
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# try to undo that
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test_cmp "$cli/k-utf16-k" k-utf16-k &&
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test_cmp "$cli/k-utf16-ko" k-utf16-ko
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)
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'
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build_gendouble() {
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cat >gendouble.py <<-\EOF
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import sys
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import struct
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s = struct.pack(">LL18s",
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0x00051607, # AppleDouble
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0x00020000, # version 2
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"" # pad to 26 bytes
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)
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sys.stdout.write(s)
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EOF
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}
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test_expect_success 'ignore apple' '
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test_when_finished rm -f gendouble.py &&
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build_gendouble &&
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(
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cd "$cli" &&
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test-genrandom apple 1024 >double.png &&
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"$PYTHON_PATH" "$TRASH_DIRECTORY/gendouble.py" >%double.png &&
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p4 add -t apple double.png &&
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p4 submit -d appledouble
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) &&
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test_when_finished cleanup_git &&
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git p4 clone --dest="$git" //depot@all &&
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(
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cd "$git" &&
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test ! -f double.png
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)
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'
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test_expect_success SYMLINKS 'create p4 symlink' '
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cd "$cli" &&
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ln -s symlink-target symlink &&
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p4 add symlink &&
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p4 submit -d "add symlink"
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'
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test_expect_success SYMLINKS 'ensure p4 symlink parsed correctly' '
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test_when_finished cleanup_git &&
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git p4 clone --dest="$git" //depot@all &&
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(
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cd "$git" &&
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test -L symlink &&
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test $(readlink symlink) = symlink-target
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)
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'
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test_expect_success SYMLINKS 'empty symlink target' '
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(
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# first create the file as a file
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cd "$cli" &&
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>empty-symlink &&
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p4 add empty-symlink &&
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p4 submit -d "add empty-symlink as a file"
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) &&
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(
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# now change it to be a symlink to "target1"
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cd "$cli" &&
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p4 edit empty-symlink &&
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p4 reopen -t symlink empty-symlink &&
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rm empty-symlink &&
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ln -s target1 empty-symlink &&
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p4 add empty-symlink &&
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p4 submit -d "make empty-symlink point to target1"
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) &&
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(
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# Hack the p4 depot to make the symlink point to nothing;
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# this should not happen in reality, but shows up
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# in p4 repos in the wild.
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#
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# The sed expression changes this:
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# @@
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# text
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# @target1
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# @
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# to this:
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# @@
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# text
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# @@
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#
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cd "$db/depot" &&
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sed "/@target1/{; s/target1/@/; n; d; }" \
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empty-symlink,v >empty-symlink,v.tmp &&
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mv empty-symlink,v.tmp empty-symlink,v
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) &&
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(
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# Make sure symlink really is empty. Asking
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# p4 to sync here will make it generate errors.
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cd "$cli" &&
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p4 print -q //depot/empty-symlink#2 >out &&
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test ! -s out
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) &&
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test_when_finished cleanup_git &&
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# make sure git p4 handles it without error
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git p4 clone --dest="$git" //depot@all &&
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# fix the symlink, make it point to "target2"
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(
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cd "$cli" &&
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p4 open empty-symlink &&
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rm empty-symlink &&
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ln -s target2 empty-symlink &&
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p4 submit -d "make empty-symlink point to target2"
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) &&
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cleanup_git &&
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git p4 clone --dest="$git" //depot@all &&
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(
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cd "$git" &&
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test $(readlink empty-symlink) = target2
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)
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'
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test_expect_success 'kill p4d' '
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kill_p4d
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'
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test_done
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