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Roman numeral converter

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Oliver Davies 2020-07-03 20:39:28 +01:00
parent 70aa53bd16
commit 533bcaf826
4 changed files with 260 additions and 2 deletions
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tests/RomanNumeralsConverterTest.php Normal file
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<?php
declare(strict_types=1);
namespace App\Tests;
use App\RomanNumeralsConverter;
use Assert\AssertionFailedException;
use PHPUnit\Framework\Assert;
use PHPUnit\Framework\TestCase;
final class RomanNumeralsConverterTest extends TestCase
{
/**
* @test
* @dataProvider numeralProvider
*/
public function it_converts_a_number(int $number, string $expected): void
{
Assert::assertSame(
$expected,
RomanNumeralsConverter::convert($number)
);
}
public function numeralProvider(): array
{
return [
1 => [
'number' => 1,
'expected' => 'I',
],
2 => [
'number' => 2,
'expected' => 'II',
],
3 => [
'number' => 3,
'expected' => 'III',
],
4 => [
'number' => 4,
'expected' => 'IV',
],
5 => [
'number' => 5,
'expected' => 'V',
],
9 => [
'number' => 9,
'expected' => 'IX',
],
10 => [
'number' => 10,
'expected' => 'X',
],
15 => [
'number' => 15,
'expected' => 'XV',
],
19 => [
'number' => 19,
'expected' => 'XIX',
],
20 => [
'number' => 20,
'expected' => 'XX',
],
21 => [
'number' => 21,
'expected' => 'XXI',
],
40 => [
'number' => 40,
'expected' => 'XL',
],
50 => [
'number' => 50,
'expected' => 'L',
],
80 => [
'number' => 80,
'expected' => 'LXXX',
],
90 => [
'number' => 90,
'expected' => 'XC',
],
100 => [
'number' => 100,
'expected' => 'C',
],
110 => [
'number' => 110,
'expected' => 'CX',
],
400 => [
'number' => 400,
'expected' => 'CD',
],
500 => [
'number' => 500,
'expected' => 'D',
],
700 => [
'number' => 700,
'expected' => 'DCC',
],
900 => [
'number' => 900,
'expected' => 'CM',
],
1000 => [
'number' => 1000,
'expected' => 'M',
],
1986 => [
'number' => 1986,
'expected' => 'MCMLXXXVI',
],
1990 => [
'number' => 1990,
'expected' => 'MCMXC',
],
2020 => [
'number' => 2020,
'expected' => 'MMXX',
],
];
}
/**
* @test
*/
public function it_cannot_convert_negative_numbers(): void
{
$this->expectException(AssertionFailedException::class);
$this->expectExceptionMessage('Cannot convert negative numbers');
RomanNumeralsConverter::convert(-1);
}
}