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#!/usr/bin/perl
use v5.26;
use Test2::V0 -no_srand;
use Test2::Tools::Subtest 'subtest_streamed';
use Getopt::Long;
use experimental 'signatures';
### Options and Arguments
my ($tests, $examples, $verbose);
GetOptions(
'examples!' => \$examples,
'tests!' => \$tests,
'verbose!' => \$verbose,
) or usage();
run_tests($examples, $tests); # tests do not return
usage() unless @ARGV;
sub usage {
die <<~EOS;
$0 - length of last word
usage: $0 [-examples] [-tests] [STR...]
-examples
run the examples from the challenge
-tests
run some tests
STR...
string or list of words
EOS
}
### Input and Output
say llw("@ARGV");
### Implementation
#
# For details see:
# https://github.sommrey.de/the-bears-den/2025/07/25/ch-331.html#task-1
sub llw {
() = shift =~ /\w+/g or return 0;
$+[0] - $-[0];
}
### Examples and Tests
sub run_tests ($examples, $tests) {
return unless $examples || $tests;
state sub run_example ($args, $expected, $name) {
my $result = llw(@$args);
is $result, $expected,
qq($name: "@$args" -> $expected);
}
plan 2;
$examples ? subtest_streamed(examples => sub {
my @examples = (
[["The Weekly Challenge"], 9, 'example 1'],
[[" Hello World "], 5, 'example 2'],
[["Let's begin the fun"], 3, 'example 3'],
);
plan scalar @examples;
for (@examples) {
run_example @$_;
}
}) : pass 'skip examples';
$tests ? subtest_streamed(tests => sub {
plan 2;
is llw('... --- +++ /// '), 0, 'no word';
is llw("it isn't"), 1, 'part only';
}) : pass 'skip tests';
exit;
}
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