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blame,cat-file: Demonstrate --textconv is wrongly running converter on symlinks

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git blame --textconv is wrongly calling the textconv filter on
symlinks: symlinks are stored as blobs whose content is the target of
the link, and blame calls the textconv filter on a temporary file
filled-in with the content of this blob.

For example:

    $ git blame -C -C regular-file.pdf
    Error: May not be a PDF file (continuing anyway)
    Error: PDF file is damaged - attempting to reconstruct xref table...
    Error: Couldn't find trailer dictionary
    Error: Couldn't read xref table
    Warning: program returned non-zero exit code #1
    fatal: unable to read files to diff

That errors come from pdftotext run on symlink.pdf being extracted to
/tmp/ with one-line plain-text content pointing to link destination.

So several failures are demonstrated here:

  - git cat-file --textconv :symlink.bin    # also HEAD:symlink.bin
  - git blame --textconv symlink.bin
  - git blame -C -C --textconv regular-file # but also looks on symlink.bin

At present they all fail with something like.

    E: /tmp/j3ELEs_symlink.bin is not "binary" file

NOTE: git diff doesn't try to textconv the pathnames, it runs the
textual diff without textconv, which is the expected behavior.

Signed-off-by: Kirill Smelkov <kirr@landau.phys.spbu.ru>
Reviewed-by: Matthieu Moy <Matthieu.Moy@grenoble-inp.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Kirill Smelkov 2010-09-29 15:35:23 +04:00 committed by Junio C Hamano
parent 6517cf7de8
commit ab3b7b9a6e
2 changed files with 78 additions and 0 deletions
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49
t/t8006-blame-textconv.sh
View File

@ -17,10 +17,16 @@ chmod +x helper
test_expect_success 'setup ' '
echo "bin: test 1" >one.bin &&
echo "bin: test number 2" >two.bin &&
if test_have_prereq SYMLINKS; then
ln -s one.bin symlink.bin
fi &&
git add . &&
GIT_AUTHOR_NAME=Number1 git commit -a -m First --date="2010-01-01 18:00:00" &&
echo "bin: test 1 version 2" >one.bin &&
echo "bin: test number 2 version 2" >>two.bin &&
if test_have_prereq SYMLINKS; then
ln -sf two.bin symlink.bin
fi &&
GIT_AUTHOR_NAME=Number2 git commit -a -m Second --date="2010-01-01 20:00:00"
'
@ -78,4 +84,47 @@ test_expect_success 'blame from previous revision' '
test_cmp expected result
'
cat >expected <<EOF
(Number2 2010-01-01 20:00:00 +0000 1) two.bin
EOF
test_expect_success SYMLINKS 'blame with --no-textconv (on symlink)' '
git blame --no-textconv symlink.bin >blame &&
find_blame <blame >result &&
test_cmp expected result
'
# fails with '...symlink.bin is not "binary" file'
test_expect_failure SYMLINKS 'blame --textconv (on symlink)' '
git blame --textconv symlink.bin >blame &&
find_blame <blame >result &&
test_cmp expected result
'
# cp two.bin three.bin and make small tweak
# (this will direct blame -C -C three.bin to consider two.bin and symlink.bin)
test_expect_success SYMLINKS 'make another new commit' '
cat >three.bin <<\EOF &&
bin: test number 2
bin: test number 2 version 2
bin: test number 2 version 3
bin: test number 3
EOF
git add three.bin &&
GIT_AUTHOR_NAME=Number4 git commit -a -m Fourth --date="2010-01-01 23:00:00"
'
# fails with '...symlink.bin is not "binary" file'
test_expect_failure SYMLINKS 'blame on last commit (-C -C, symlink)' '
git blame -C -C three.bin >blame &&
find_blame <blame >result &&
cat >expected <<\EOF &&
(Number1 2010-01-01 18:00:00 +0000 1) converted: test number 2
(Number2 2010-01-01 20:00:00 +0000 2) converted: test number 2 version 2
(Number3 2010-01-01 22:00:00 +0000 3) converted: test number 2 version 3
(Number4 2010-01-01 23:00:00 +0000 4) converted: test number 3
EOF
test_cmp expected result
'
test_done

29
t/t8007-cat-file-textconv.sh
View File

@ -12,6 +12,9 @@ chmod +x helper
test_expect_success 'setup ' '
echo "bin: test" >one.bin &&
if test_have_prereq SYMLINKS; then
ln -s one.bin symlink.bin
fi &&
git add . &&
GIT_AUTHOR_NAME=Number1 git commit -a -m First --date="2010-01-01 18:00:00" &&
echo "bin: test version 2" >one.bin &&
@ -68,4 +71,30 @@ test_expect_success 'cat-file --textconv on previous commit' '
git cat-file --textconv HEAD^:one.bin >result &&
test_cmp expected result
'
test_expect_success SYMLINKS 'cat-file without --textconv (symlink)' '
git cat-file blob :symlink.bin >result &&
printf "%s" "one.bin" >expected
test_cmp expected result
'
# fails because cat-file tries to run converter on symlink.bin
test_expect_failure SYMLINKS 'cat-file --textconv on index (symlink)' '
! git cat-file --textconv :symlink.bin 2>result &&
cat >expected <<\EOF &&
fatal: git cat-file --textconv: unable to run textconv on :symlink.bin
EOF
test_cmp expected result
'
# fails because cat-file tries to run converter on symlink.bin
test_expect_failure SYMLINKS 'cat-file --textconv on HEAD (symlink)' '
! git cat-file --textconv HEAD:symlink.bin 2>result &&
cat >expected <<EOF &&
fatal: git cat-file --textconv: unable to run textconv on HEAD:symlink.bin
EOF
test_cmp expected result
'
test_done