Solaris - wsconsume and wsprovide scripts run errors

On Solaris platform wsconsume and wsprovide shell scripts can't be executed directly from actual shell like ./wsconsume.sh.
It ends with this output './wsconsume.sh: test: argument expected'

3 workarounds exist, for permanent change is possible way number 3:
change 'if [ -a $LIBDIR/jbossws-client.jar ]; then' to 'if [ -f $LIBDIR/jbossws-client.jar ]; then'
(section for JBOSSWS_NATIVE property# Is it a JBossWS-native or SunRI installation? )

part from man test on Solaris machine:
-a file True if file exists. (Not available
in sh.)
...
-e file True if file exists. (Not available
in sh.)
-f file True if file exists and is a regular
file. Alternatively, if /usr/bin/sh
users specify /usr/ucb before
/usr/bin in their PATH environment
variable, then test will return true
if file exists and is
(not-a-directory). The csh test and
[ built-ins always use this alterna-
tive behavior.