Add acronym exercise (#704)

* Add acronym exercise

* remove variable length lookbehind

config.json

@@ -148,6 +148,14 @@
         ],
         "difficulty": 1
       },
+      {
+        "slug": "acronym",
+        "name": "Acronym",
+        "uuid": "79fce6b7-5af9-4ee5-bd41-743ecc00cebc",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 3
+      },
       {
         "slug": "all-your-base",
         "name": "All Your Base",

exercises/practice/acronym/.docs/instructions.md

@@ -0,0 +1,17 @@
+# Instructions
+
+Convert a phrase to its acronym.
+
+Techies love their TLA (Three Letter Acronyms)!
+
+Help generate some jargon by writing a program that converts a long name like Portable Network Graphics to its acronym (PNG).
+
+Punctuation is handled as follows: hyphens are word separators (like whitespace); all other punctuation can be removed from the input.
+
+For example:
+
+| Input                     | Output |
+| ------------------------- | ------ |
+| As Soon As Possible       | ASAP   |
+| Liquid-crystal display    | LCD    |
+| Thank George It's Friday! | TGIF   |

exercises/practice/acronym/.meta/config.json

@@ -0,0 +1,19 @@
+{
+  "authors": [
+    "glennj"
+  ],
+  "files": {
+    "solution": [
+      "lib/Acronym.pm"
+    ],
+    "test": [
+      "t/acronym.t"
+    ],
+    "example": [
+      ".meta/solutions/lib/Acronym.pm"
+    ]
+  },
+  "blurb": "Convert a long phrase to its acronym.",
+  "source": "Julien Vanier",
+  "source_url": "https://github.com/monkbroc"
+}

exercises/practice/acronym/.meta/solutions/lib/Acronym.pm

@@ -0,0 +1,18 @@
+package Acronym;
+
+use strict;
+use warnings;
+use experimental qw<signatures postderef postderef_qq>;
+
+use Exporter qw<import>;
+our @EXPORT_OK = qw<abbreviate>;
+
+sub abbreviate ($phrase) {
+
+    # capture letters preceded by the start of the string
+    # or by a non-(letter or apostrophe)
+    my @letters = $phrase =~ /(?:^|[^'a-z])\K([a-z])/ig;
+    return uc join "", @letters;
+}
+
+1;

exercises/practice/acronym/.meta/solutions/t/acronym.t

@@ -0,0 +1 @@
+../../../t/acronym.t

exercises/practice/acronym/.meta/template-data.yaml

@@ -0,0 +1,26 @@
+subs: abbreviate
+
+properties:
+  abbreviate:
+    test: |-
+      use Data::Dmp;
+      sprintf(<<'END', map {dmp($_)} $case->{input}{phrase},  $case->{expected},  $case->{description}); 
+      is(
+          abbreviate( %s ),
+          %s,
+          %s,
+      );
+      END
+
+example: |-
+  sub abbreviate ($phrase) {
+    # capture letters preceded by the start of the string
+    # or by a non-(letter or apostrophe)
+    my @letters = $phrase =~ /(?:^|[^'a-z])\K([a-z])/ig;
+    return uc join "", @letters;
+  }
+
+stub: |-
+  sub abbreviate ($phrase) {
+      return undef;
+  }

exercises/practice/acronym/.meta/tests.toml

@@ -0,0 +1,37 @@
+# This is an auto-generated file.
+#
+# Regenerating this file via `configlet sync` will:
+# - Recreate every `description` key/value pair
+# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
+# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
+# - Preserve any other key/value pair
+#
+# As user-added comments (using the # character) will be removed when this file
+# is regenerated, comments can be added via a `comment` key.
+
+[1e22cceb-c5e4-4562-9afe-aef07ad1eaf4]
+description = "basic"
+
+[79ae3889-a5c0-4b01-baf0-232d31180c08]
+description = "lowercase words"
+
+[ec7000a7-3931-4a17-890e-33ca2073a548]
+description = "punctuation"
+
+[32dd261c-0c92-469a-9c5c-b192e94a63b0]
+description = "all caps word"
+
+[ae2ac9fa-a606-4d05-8244-3bcc4659c1d4]
+description = "punctuation without whitespace"
+
+[0e4b1e7c-1a6d-48fb-81a7-bf65eb9e69f9]
+description = "very long abbreviation"
+
+[6a078f49-c68d-4b7b-89af-33a1a98c28cc]
+description = "consecutive delimiters"
+
+[5118b4b1-4572-434c-8d57-5b762e57973e]
+description = "apostrophes"
+
+[adc12eab-ec2d-414f-b48c-66a4fc06cdef]
+description = "underscore emphasis"

exercises/practice/acronym/lib/Acronym.pm

@@ -0,0 +1,12 @@
+package Acronym;
+
+use v5.40;
+
+use Exporter qw<import>;
+our @EXPORT_OK = qw<abbreviate>;
+
+sub abbreviate ($phrase) {
+    return undef;
+}
+
+1;

exercises/practice/acronym/t/acronym.t

@@ -0,0 +1,63 @@
+#!/usr/bin/env perl
+use Test2::V0;
+
+use FindBin qw<$Bin>;
+use lib "$Bin/../lib", "$Bin/../local/lib/perl5";
+
+use Acronym qw<abbreviate>;
+
+is( # begin: 1e22cceb-c5e4-4562-9afe-aef07ad1eaf4
+    abbreviate("Portable Network Graphics"),
+    "PNG",
+    "basic",
+); # end: 1e22cceb-c5e4-4562-9afe-aef07ad1eaf4
+
+is( # begin: 79ae3889-a5c0-4b01-baf0-232d31180c08
+    abbreviate("Ruby on Rails"),
+    "ROR",
+    "lowercase words",
+); # end: 79ae3889-a5c0-4b01-baf0-232d31180c08
+
+is( # begin: ec7000a7-3931-4a17-890e-33ca2073a548
+    abbreviate("First In, First Out"),
+    "FIFO",
+    "punctuation",
+); # end: ec7000a7-3931-4a17-890e-33ca2073a548
+
+is( # begin: 32dd261c-0c92-469a-9c5c-b192e94a63b0
+    abbreviate("GNU Image Manipulation Program"),
+    "GIMP",
+    "all caps word",
+); # end: 32dd261c-0c92-469a-9c5c-b192e94a63b0
+
+is( # begin: ae2ac9fa-a606-4d05-8244-3bcc4659c1d4
+    abbreviate("Complementary metal-oxide semiconductor"),
+    "CMOS",
+    "punctuation without whitespace",
+); # end: ae2ac9fa-a606-4d05-8244-3bcc4659c1d4
+
+is( # begin: 0e4b1e7c-1a6d-48fb-81a7-bf65eb9e69f9
+    abbreviate("Rolling On The Floor Laughing So Hard That My Dogs Came Over And Licked Me"),
+    "ROTFLSHTMDCOALM",
+    "very long abbreviation",
+); # end: 0e4b1e7c-1a6d-48fb-81a7-bf65eb9e69f9
+
+is( # begin: 6a078f49-c68d-4b7b-89af-33a1a98c28cc
+    abbreviate("Something - I made up from thin air"),
+    "SIMUFTA",
+    "consecutive delimiters",
+); # end: 6a078f49-c68d-4b7b-89af-33a1a98c28cc
+
+is( # begin: 5118b4b1-4572-434c-8d57-5b762e57973e
+    abbreviate("Halley's Comet"),
+    "HC",
+    "apostrophes",
+); # end: 5118b4b1-4572-434c-8d57-5b762e57973e
+
+is( # begin: adc12eab-ec2d-414f-b48c-66a4fc06cdef
+    abbreviate("The Road _Not_ Taken"),
+    "TRNT",
+    "underscore emphasis",
+); # end: adc12eab-ec2d-414f-b48c-66a4fc06cdef
+
+done_testing;