An optional third parameter can be given a min length. The function
then only passes successfully, if all strings are in the range
min_length <= string <= max_length
update and fix function and unit tests
the check for the minlength has to be written differently
because 0 values should be possible. We now check
a) if the input is convertible, and throw a ParseError and
b) if the input .is_a?(Numeric) and ask for a positive number
it's not as clean as for maxlength, but keeps a similar behaviour
refined the error checking for the min length
try to convert to Integer(args[2]) and fail,
if it's not possible
changed the tests accordingly to the new parameter checking
This function is used to validate a string is less than a maximum length. The
string, or array of strings, is passed as the first argument to the function.
The maximum length of the string is passed as the second argument.
It is useful to validate, for example, that Puppet is not sending a username
to a downstream system that the system cannot cope with, but that might not
cause an error message - for example, MySQL will not accept a username of
more than 16 characters. This enables a Puppet administrator to validate
the data that it may have been passed from upstream through, for example,
Hiera.
