My attempts at exercism.org
feat(php): proverb
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php/proverb/Proverb.php
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php/proverb/Proverb.php
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<?php
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declare(strict_types=1);
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class Proverb
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{
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public function recite(array $pieces): array
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{
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$output = [];
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for ($i = 0; $i < count($pieces); $i++) {
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if ($i == count($pieces) - 1 || count($pieces) == 1) {
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$output[] = "And all for the want of a {$pieces[0]}.";
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} else {
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$output[] = "For want of a {$pieces[$i]} the {$pieces[$i + 1]} was lost.";
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}
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}
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return $output;
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}
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}
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php/proverb/ProverbTest.php
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php/proverb/ProverbTest.php
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<?php
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/*
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* By adding type hints and enabling strict type checking, code can become
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* easier to read, self-documenting and reduce the number of potential bugs.
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* By default, type declarations are non-strict, which means they will attempt
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* to change the original type to match the type specified by the
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* type-declaration.
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*
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* In other words, if you pass a string to a function requiring a float,
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* it will attempt to convert the string value to a float.
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*
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* To enable strict mode, a single declare directive must be placed at the top
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* of the file.
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* This means that the strictness of typing is configured on a per-file basis.
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* This directive not only affects the type declarations of parameters, but also
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* a function's return type.
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*
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* For more info review the Concept on strict type checking in the PHP track
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* <link>.
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*
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* To disable strict typing, comment out the directive below.
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*/
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declare(strict_types=1);
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use PHPUnit\Framework\TestCase;
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class ProverbTest extends TestCase
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{
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private Proverb $proverb;
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public static function setUpBeforeClass(): void
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{
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require_once 'Proverb.php';
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}
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public function setUp(): void
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{
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$this->proverb = new Proverb();
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}
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public function testNoVerses(): void
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{
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$pieces = [];
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$expected = [];
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$this->assertEquals($expected, $this->proverb->recite($pieces));
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}
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public function testOneVerse(): void
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{
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$pieces = ['nail'];
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$expected = ['And all for the want of a nail.'];
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$this->assertEquals($expected, $this->proverb->recite($pieces));
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}
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public function testTwoVerses(): void
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{
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$pieces = ['nail', 'shoe'];
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$expected = ['For want of a nail the shoe was lost.', 'And all for the want of a nail.'];
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$this->assertEquals($expected, $this->proverb->recite($pieces));
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}
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public function testThreeVerses(): void
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{
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$pieces = ['nail', 'shoe', 'horse'];
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$expected = [
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'For want of a nail the shoe was lost.',
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'For want of a shoe the horse was lost.',
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'And all for the want of a nail.'
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];
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$this->assertEquals($expected, $this->proverb->recite($pieces));
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}
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public function testFullProverb(): void
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{
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$pieces = ['nail', 'shoe', 'horse', 'rider', 'message', 'battle', 'kingdom'];
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$expected = [
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'For want of a nail the shoe was lost.',
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'For want of a shoe the horse was lost.',
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'For want of a horse the rider was lost.',
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'For want of a rider the message was lost.',
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'For want of a message the battle was lost.',
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'For want of a battle the kingdom was lost.',
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'And all for the want of a nail.'
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];
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$this->assertEquals($expected, $this->proverb->recite($pieces));
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}
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public function testFourModernizedVerses(): void
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{
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$pieces = ['pin', 'gun', 'soldier', 'battle'];
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$expected = [
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'For want of a pin the gun was lost.',
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'For want of a gun the soldier was lost.',
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'For want of a soldier the battle was lost.',
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'And all for the want of a pin.'
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];
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$this->assertEquals($expected, $this->proverb->recite($pieces));
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}
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}
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php/proverb/README.md
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php/proverb/README.md
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# Proverb
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Welcome to Proverb on Exercism's PHP Track.
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If you need help running the tests or submitting your code, check out `HELP.md`.
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## Instructions
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For want of a horseshoe nail, a kingdom was lost, or so the saying goes.
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Given a list of inputs, generate the relevant proverb. For example, given the list `["nail", "shoe", "horse", "rider", "message", "battle", "kingdom"]`, you will output the full text of this proverbial rhyme:
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```text
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For want of a nail the shoe was lost.
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For want of a shoe the horse was lost.
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For want of a horse the rider was lost.
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For want of a rider the message was lost.
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For want of a message the battle was lost.
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For want of a battle the kingdom was lost.
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And all for the want of a nail.
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```
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Note that the list of inputs may vary; your solution should be able to handle lists of arbitrary length and content. **No line of the output text should be a static**, unchanging string; all should vary according to the input given.
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## Source
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### Created by
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- @MichaelBunker