<?php

declare(strict_types=1);

namespace Recruiter\Array\Tests;

use PHPUnit\Framework\TestCase;

use function Recruiter\Array\array_merge;

class ArrayMergeTest extends TestCase

{

public function testMerge(): void

{

$this->assertSame(

['a' => [1, 2, 3, 4]],

array_merge(['a' => [1, 2]], ['a' => [3, 4]]),

);

}

public function testMergeEmpty(): void

{

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

}

public function testMergeNumericWillConcatInOrder(): void

{

$this->assertSame(

[1, 2, 3, 4],

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

);

}

public function testMergeAssociativeWillOverride(): void

{

$this->assertSame(

['a' => 2],

array_merge(['a' => 1], ['a' => 2]),

);

}

public function testMergeDeplyRecursive(): void

{

$this->assertSame(

['a' => ['b' => null, 'c' => [1, 2, 3, 4]], 'b' => []],

array_merge(['a' => ['b' => 2, 'c' => [1, 2]]], ['a' => ['b' => null, 'c' => [3, 4]], 'b' => []]),

);

}

public function testMergeMultipleArrays(): void

{

$this->assertSame(

[1, 2, 3, 4],

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

);

}

public function testMergeNotArrays(): void

{

$this->assertSame(

[1, 2],

array_merge(1, 2),

);

}

}