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alexwebgr's solution

to Hello World in the Perl 5 Track

Published at Jan 11 2021 · 0 comments
Instructions
Test suite
Solution

The classical introductory exercise. Just say "Hello, World!".

"Hello, World!" is the traditional first program for beginning programming in a new language or environment.

The objectives are simple:

  • Write a function that returns the string "Hello, World!".
  • Run the test suite and make sure that it succeeds.
  • Submit your solution and check it at the website.

If everything goes well, you will be ready to fetch your first real exercise.

Source

This is an exercise to introduce users to using Exercism http://en.wikipedia.org/wiki/%22Hello,_world!%22_program

Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have completed the exercise.

hello-world.t

#!/usr/bin/env perl
use Test2::V0;

use FindBin qw<$Bin>;
use lib $Bin, "$Bin/local/lib/perl5";    # Find modules in the same dir as this file.

use HelloWorld qw(hello);

plan 2;                                  # This is how many tests we expect to run.

imported_ok qw<hello> or bail_out;

# Run the 'is' sub from 'Test2::V0' with three arguments.
is(
  hello(),                               # Run the 'hello' sub imported from the module.
  'Hello, World!',                       # The expected result to compare with 'hello'.
  'Say Hi!'                              # The test description.
);
# Declare package 'HelloWorld'
package HelloWorld;
use strict;
use warnings;
use Exporter qw<import>;
our @EXPORT_OK = qw<hello>;

sub hello {
    'Hello, World!'
}

1;

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