busybox/testsuite/date/date-R-works

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dt1="`date -R`"
# Wait for the start of next second
dt="$dt1"
while test x"$dt" = x"$dt1"; do
dt="`date -R`"
done
bdt=`busybox date -R`
bdt=`busybox date -R`
bdt=`busybox date -R`
bdt=`busybox date -R`
bdt=`busybox date -R`
# Wtih !FEATURE_DATE_NANO, that is, with time()
# instead of clock_gettime(), seconds transition
# may not happen at _exactly_ the same moment,
# but can be delayed. Several busybox date -R
# invocations above are meant to deal with this.
# (two were enough for me, but I added more just in case).
test x"$dt" = x"$bdt"