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author | Jim Meyering <jim@meyering.net> | 2003-08-16 13:22:23 +0000 |
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committer | Jim Meyering <jim@meyering.net> | 2003-08-16 13:22:23 +0000 |
commit | 6c4fe5054ccb9aa27778dc5139c06c058bcdfd53 (patch) | |
tree | be92389d561c955b7dfda7455ba1c238ebff75f2 /tests/tail-2 | |
parent | 4c34fab639b0291279cf6c3ef475c3c34556961a (diff) | |
download | coreutils-6c4fe5054ccb9aa27778dc5139c06c058bcdfd53.tar.xz |
*** empty log message ***
Diffstat (limited to 'tests/tail-2')
-rwxr-xr-x | tests/tail-2/tail-n0f | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/tests/tail-2/tail-n0f b/tests/tail-2/tail-n0f new file mode 100755 index 000000000..d13db9927 --- /dev/null +++ b/tests/tail-2/tail-n0f @@ -0,0 +1,51 @@ +#!/bin/sh +# Make sure that `tail -n0 -f' and `tail -c0 -f' sleep +# rather than doing what amounted to a busy-wait. +# This bug was fixed for 5.0.91 +# It skips the test if your system lacks a /proc/$pid/status +# file, or if its contents don't look right. + +if test "$VERBOSE" = yes; then + set -x + tail --version +fi + +sleep 2 & +pid=$! +sleep .1 +grep '^State:[ ]*[S]' /proc/$pid/status > /dev/null 2>&1 || \ + { + echo "$0:/proc/$pid/status: missing or 'different': skipping this test" 1>&2 + (exit 77); exit 77 + } +kill $pid + +pwd=`pwd` +t0=`echo "$0"|sed 's,.*/,,'`.tmp; tmp=$t0/$$ +trap 'status=$?; cd $pwd; chmod -R u+rwx $t0; rm -rf $t0 && exit $status' 0 +trap '(exit $?); exit $?' 1 2 13 15 + +framework_failure=0 +mkdir -p $tmp || framework_failure=1 +cd $tmp || framework_failure=1 +touch empty || framework_failure=1 +echo anything > nonempty || framework_failure=1 + +if test $framework_failure = 1; then + echo "$0: failure in testing framework" 1>&2 + (exit 1); exit 1 +fi + +fail=0 + +for file in empty nonempty; do + for c_or_n in c n; do + tail --sleep=4 -${c_or_n} 0 -f $file & + pid=$! + sleep .1 + grep '^State:[ ]*[S]' /proc/$pid/status > /dev/null || fail=1 + kill $pid + done +done + +(exit $fail); exit $fail |