tests.sh doesn't process -s option with the one -v option

[validname]

user@wks-dps:~/Documents/git/node-collectors/tests$ ./lib/tests.sh -d testcases -s util/setup.sh -Aa >/dev/null 2>&1; echo $?
0
user@wks-dps:~/Documents/git/node-collectors/tests$ ./lib/tests.sh -v -d testcases -s util/setup.sh -Aa >/dev/null 2>&1; echo $?
1
user@wks-dps:~/Documents/git/node-collectors/tests$ ./lib/tests.sh -vv -d testcases -s util/setup.sh -Aa >/dev/null 2>&1; echo $?
0

Run with the one -v option:

user@wks-dps:~/Documents/git/node-collectors/tests$ ./lib/tests.sh -v -d testcases -s util/setup.sh -Aa 
running test suite at: /home/user/Documents/git/node-collectors/tests/testcases

### TESTCASE testcases/node_type/php-if-etc-php-node-exists.test.sh
# {BEGIN} TEST SESSION AT /tmp/tests.BfDi

    # evaluating command:

        touch /tmp/tests.BfDi/root/etc/php-node

    # assertion (command exited with code): positive expectation
    # evaluating command:

        :node_type
    # @@  ROOT=/tmp/tests.BfDi/root 
    # evaluating command:

        node_type


    # assertion (command exited with code): positive expectation
    # assertion (regexp matches): positive expectation
    # assertion (regexp matches): failed
    # assertion (regexp matches): >>> node_type = 'php'
    # assertion (regexp matches): <<< contents of stdout:


### {END} TEST SESSION
### TESTCASE FAILED testcases/node_type/php-if-etc-php-node-exists.test.sh