1	#!/bin/bash
2
3	### empty string is false. Equivalent to -n.
4	test 'a' && echo true
5	test '' || echo false
6	# stdout-json: "true\nfalse\n"
7
8	### -n
9	test -n 'a' && echo true
10	test -n '' || echo false
11	# stdout-json: "true\nfalse\n"