<?php

declare(strict_types=1);

namespace Recruiter\Array\Tests;

use PHPUnit\Framework\TestCase;

use function Recruiter\Array\array_concat;

class ArrayConcatTest extends TestCase

{

public function testConcat(): void

{

$this->assertSame(

[1, 2, 3, 4],

array_concat(1, [2, 3], [4]),

);

}

public function testContactWithIterator(): void

{

$this->assertSame(

[1, 2, 3, 4],

array_concat(1, new \ArrayIterator([2, 3]), [4]),

);

}

public function testConcatPreservesNestedArrays(): void

{

$this->assertSame(

[1, 2, [3], 4],

array_concat(1, [2, [3]], [4]),

);

}

public function testConcatEmpty(): void

{

$this->assertSame([], array_concat([], [], []));

}

public function testConcatCastToArray(): void

{

$this->assertSame([1], array_concat([1]));

$this->assertSame([1], array_concat(1));

}

}