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scripts/gzip_tests.sh: skip if GNU gzip/gunzip is too old

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This commit is contained in:
Eric Biggers 2020-10-18 14:21:25 -07:00
parent 455e9c2c3e
commit ddb3db2050
1 changed files with 18 additions and 0 deletions
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18
scripts/gzip_tests.sh
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@ -96,6 +96,24 @@ assert_equals() {
# Get the filesystem type. # Get the filesystem type.
FSTYPE=$(df -T . | tail -1 | awk '{print $2}') FSTYPE=$(df -T . | tail -1 | awk '{print $2}')
# If gzip or gunzip is the GNU version, require that it supports the '-k'
# option. This option was added in v1.6, released in 2013.
check_version_prereq() {
local prog=$1
if ! echo | { $prog -k || true; } |& grep -q 'invalid option'; then
return 0
fi
if ! $prog -V |& grep -q 'Free Software Foundation'; then
echo 1>&2 "Unexpected case: not GNU $prog, but -k option is invalid"
exit 1
fi
echo "GNU $prog is too old; skipping gzip/gunzip tests"
exit 0
}
check_version_prereq gzip
check_version_prereq gunzip
begin_test 'Basic compression and decompression works' begin_test 'Basic compression and decompression works'
cp file orig cp file orig
gzip file gzip file