git/t/t5000-tar-tree.sh
Jeff King 96174145fc t5000: simplify gzip prerequisite checks
In t5000, we test the built-in ".tar.gz" config for
git-archive. To make our tests portable, we check that we
have a way to both gzip and gunzip, and we respected
environment variables to point to alternate commands for
doing these operations.

However, the $GZIP variable did not actually do anything, as
changing it would not affect the baked-in value in
archive-tar.c. Moreover, setting the variable $GZIP
influences gzip itself. From the gzip man page:

  The environment variable GZIP can hold a set of default
  options for gzip. These options are interpreted first and
  can be overwritten by explicit command line parameters.

We could rename this variable, and use it to set up custom
config (or even have a Makefile knob to affect the built
binary), but it is not worth the trouble; nobody has ever
reported a problem with the baked-in default, and they can
always change it via config if they need to. Let's just drop
the variable and use "gzip" in the test (keeping the
prerequisite, of course).

While we're at it, we can drop the GUNZIP variable and
prerequisite; it uses "gzip -d", so if we have GZIP, we
will have both.

We can also use test_lazy_prereq for the gzip prerequisite,
which is simpler and behaves more consistently with the rest
of git (e.g., by making output available when the test is
run with "-v").

Noticed-by: Christian Hesse <mail@eworm.de>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-12-04 16:11:53 -08:00

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#!/bin/sh
#
# Copyright (C) 2005 Rene Scharfe
#
test_description='git tar-tree and git get-tar-commit-id test
This test covers the topics of file contents, commit date handling and
commit id embedding:
The contents of the repository is compared to the extracted tar
archive. The repository contains simple text files, symlinks and a
binary file (/bin/sh). Only paths shorter than 99 characters are
used.
git tar-tree applies the commit date to every file in the archive it
creates. The test sets the commit date to a specific value and checks
if the tar archive contains that value.
When giving git tar-tree a commit id (in contrast to a tree id) it
embeds this commit id into the tar archive as a comment. The test
checks the ability of git get-tar-commit-id to figure it out from the
tar file.
'
. ./test-lib.sh
SUBSTFORMAT=%H%n
test_lazy_prereq TAR_NEEDS_PAX_FALLBACK '
(
mkdir pax &&
cd pax &&
"$TAR" xf "$TEST_DIRECTORY"/t5000/pax.tar &&
test -f PaxHeaders.1791/file
)
'
test_lazy_prereq GZIP 'gzip --version'
get_pax_header() {
file=$1
header=$2=
while read len rest
do
if test "$len" = $(echo "$len $rest" | wc -c)
then
case "$rest" in
$header*)
echo "${rest#$header}"
;;
esac
fi
done <"$file"
}
check_tar() {
tarfile=$1.tar
listfile=$1.lst
dir=$1
dir_with_prefix=$dir/$2
test_expect_success ' extract tar archive' '
(mkdir $dir && cd $dir && "$TAR" xf -) <$tarfile
'
test_expect_success TAR_NEEDS_PAX_FALLBACK ' interpret pax headers' '
(
cd $dir &&
for header in *.paxheader
do
data=${header%.paxheader}.data &&
if test -h $data -o -e $data
then
path=$(get_pax_header $header path) &&
if test -n "$path"
then
mv "$data" "$path"
fi
fi
done
)
'
test_expect_success ' validate filenames' '
(cd ${dir_with_prefix}a && find .) | sort >$listfile &&
test_cmp a.lst $listfile
'
test_expect_success ' validate file contents' '
diff -r a ${dir_with_prefix}a
'
}
test_expect_success \
'populate workdir' \
'mkdir a &&
echo simple textfile >a/a &&
ten=0123456789 && hundred=$ten$ten$ten$ten$ten$ten$ten$ten$ten$ten &&
echo long filename >a/four$hundred &&
mkdir a/bin &&
cp /bin/sh a/bin &&
printf "A\$Format:%s\$O" "$SUBSTFORMAT" >a/substfile1 &&
printf "A not substituted O" >a/substfile2 &&
if test_have_prereq SYMLINKS; then
ln -s a a/l1
else
printf %s a > a/l1
fi &&
(p=long_path_to_a_file && cd a &&
for depth in 1 2 3 4 5; do mkdir $p && cd $p; done &&
echo text >file_with_long_path) &&
(cd a && find .) | sort >a.lst'
test_expect_success \
'add ignored file' \
'echo ignore me >a/ignored &&
echo ignored export-ignore >.git/info/attributes'
test_expect_success \
'add files to repository' \
'find a -type f | xargs git update-index --add &&
find a -type l | xargs git update-index --add &&
treeid=`git write-tree` &&
echo $treeid >treeid &&
git update-ref HEAD $(TZ=GMT GIT_COMMITTER_DATE="2005-05-27 22:00:00" \
git commit-tree $treeid </dev/null)'
test_expect_success 'setup export-subst' '
echo "substfile?" export-subst >>.git/info/attributes &&
git log --max-count=1 "--pretty=format:A${SUBSTFORMAT}O" HEAD \
>a/substfile1
'
test_expect_success \
'create bare clone' \
'git clone --bare . bare.git &&
cp .git/info/attributes bare.git/info/attributes'
test_expect_success \
'remove ignored file' \
'rm a/ignored'
test_expect_success \
'git archive' \
'git archive HEAD >b.tar'
check_tar b
test_expect_success 'git archive --prefix=prefix/' '
git archive --prefix=prefix/ HEAD >with_prefix.tar
'
check_tar with_prefix prefix/
test_expect_success 'git-archive --prefix=olde-' '
git archive --prefix=olde- HEAD >with_olde-prefix.tar
'
check_tar with_olde-prefix olde-
test_expect_success 'git archive on large files' '
test_config core.bigfilethreshold 1 &&
git archive HEAD >b3.tar &&
test_cmp b.tar b3.tar
'
test_expect_success \
'git archive in a bare repo' \
'(cd bare.git && git archive HEAD) >b3.tar'
test_expect_success \
'git archive vs. the same in a bare repo' \
'test_cmp b.tar b3.tar'
test_expect_success 'git archive with --output' \
'git archive --output=b4.tar HEAD &&
test_cmp b.tar b4.tar'
test_expect_success 'git archive --remote' \
'git archive --remote=. HEAD >b5.tar &&
test_cmp b.tar b5.tar'
test_expect_success \
'validate file modification time' \
'mkdir extract &&
"$TAR" xf b.tar -C extract a/a &&
test-chmtime -v +0 extract/a/a |cut -f 1 >b.mtime &&
echo "1117231200" >expected.mtime &&
test_cmp expected.mtime b.mtime'
test_expect_success \
'git get-tar-commit-id' \
'git get-tar-commit-id <b.tar >b.commitid &&
test_cmp .git/$(git symbolic-ref HEAD) b.commitid'
test_expect_success 'git tar-tree' '
git tar-tree HEAD >tar-tree.tar &&
test_cmp b.tar tar-tree.tar
'
test_expect_success 'git tar-tree with prefix' '
git tar-tree HEAD prefix >tar-tree_with_prefix.tar &&
test_cmp with_prefix.tar tar-tree_with_prefix.tar
'
test_expect_success 'git archive with --output, override inferred format' '
git archive --format=tar --output=d4.zip HEAD &&
test_cmp b.tar d4.zip
'
test_expect_success \
'git archive --list outside of a git repo' \
'GIT_DIR=some/non-existing/directory git archive --list'
test_expect_success 'clients cannot access unreachable commits' '
test_commit unreachable &&
sha1=`git rev-parse HEAD` &&
git reset --hard HEAD^ &&
git archive $sha1 >remote.tar &&
test_must_fail git archive --remote=. $sha1 >remote.tar
'
test_expect_success 'setup tar filters' '
git config tar.tar.foo.command "tr ab ba" &&
git config tar.bar.command "tr ab ba" &&
git config tar.bar.remote true &&
git config tar.invalid baz
'
test_expect_success 'archive --list mentions user filter' '
git archive --list >output &&
grep "^tar\.foo\$" output &&
grep "^bar\$" output
'
test_expect_success 'archive --list shows only enabled remote filters' '
git archive --list --remote=. >output &&
! grep "^tar\.foo\$" output &&
grep "^bar\$" output
'
test_expect_success 'invoke tar filter by format' '
git archive --format=tar.foo HEAD >config.tar.foo &&
tr ab ba <config.tar.foo >config.tar &&
test_cmp b.tar config.tar &&
git archive --format=bar HEAD >config.bar &&
tr ab ba <config.bar >config.tar &&
test_cmp b.tar config.tar
'
test_expect_success 'invoke tar filter by extension' '
git archive -o config-implicit.tar.foo HEAD &&
test_cmp config.tar.foo config-implicit.tar.foo &&
git archive -o config-implicit.bar HEAD &&
test_cmp config.tar.foo config-implicit.bar
'
test_expect_success 'default output format remains tar' '
git archive -o config-implicit.baz HEAD &&
test_cmp b.tar config-implicit.baz
'
test_expect_success 'extension matching requires dot' '
git archive -o config-implicittar.foo HEAD &&
test_cmp b.tar config-implicittar.foo
'
test_expect_success 'only enabled filters are available remotely' '
test_must_fail git archive --remote=. --format=tar.foo HEAD \
>remote.tar.foo &&
git archive --remote=. --format=bar >remote.bar HEAD &&
test_cmp remote.bar config.bar
'
test_expect_success GZIP 'git archive --format=tgz' '
git archive --format=tgz HEAD >j.tgz
'
test_expect_success GZIP 'git archive --format=tar.gz' '
git archive --format=tar.gz HEAD >j1.tar.gz &&
test_cmp j.tgz j1.tar.gz
'
test_expect_success GZIP 'infer tgz from .tgz filename' '
git archive --output=j2.tgz HEAD &&
test_cmp j.tgz j2.tgz
'
test_expect_success GZIP 'infer tgz from .tar.gz filename' '
git archive --output=j3.tar.gz HEAD &&
test_cmp j.tgz j3.tar.gz
'
test_expect_success GZIP 'extract tgz file' '
gzip -d -c <j.tgz >j.tar &&
test_cmp b.tar j.tar
'
test_expect_success GZIP 'remote tar.gz is allowed by default' '
git archive --remote=. --format=tar.gz HEAD >remote.tar.gz &&
test_cmp j.tgz remote.tar.gz
'
test_expect_success GZIP 'remote tar.gz can be disabled' '
git config tar.tar.gz.remote false &&
test_must_fail git archive --remote=. --format=tar.gz HEAD \
>remote.tar.gz
'
test_done