aoc/tests/Lubiana/Aoc/Y2023/D04/NumberTest.php

<?php

namespace Lubiana\Aoc\Y2023\D04;

use PHPUnit\Framework\TestCase;

/**
 * Class NumberTest
 * 
 * This class tests the fromString method in the Number class.
 * The fromString method is expected to take a string input and return an array of Number 
 * instances where each Number instance can be created from a numeric string found within the input.
 * 
 * @package Lubiana\Aoc\Y2023\D04
 */

class NumberTest extends TestCase
{
    /**
     * Test for valid input
     */
    public function testFromStringValidInput(): void
    {
        $input = "1 2 3";
        $expectedResult = [new Number(1), new Number(2), new Number(3)];

        $actualResult = Number::fromString($input);

        $this->assertEquals($expectedResult, $actualResult);
    }

    /**
     * Test for input with non-numeric values
     */
    public function testFromStringWithNonNumericValues(): void
    {
        $input = "1 A 2 3";
        $expectedResult = [new Number(1), new Number(2), new Number(3)];

        $actualResult = Number::fromString($input);

        $this->assertEquals($expectedResult, $actualResult);
    }

    /**
     * Test for empty input
     */
    public function testFromStringEmptyInput(): void
    {
        $input = "";
        $expectedResult = [];

        $actualResult = Number::fromString($input);

        $this->assertEquals($expectedResult, $actualResult);
    }

    public function testFromStringWithExtraSpaces(): void
    {
        $input = "11  2 33";
        $expectedResult = [new Number(11), new Number(2), new Number(33)];

        $actualResult = Number::fromString($input);

        $this->assertEquals($expectedResult, $actualResult);
    }
}