DiffArrayTest.php

<?php

namespace Drupal\Tests\Core\Common;

use Drupal\Component\Utility\DiffArray;
use Drupal\Tests\UnitTestCase;

/**
 * Tests the DiffArray helper class.
 *
 * @group Common
 */
class DiffArrayTest extends UnitTestCase {
    
    /**
     * Array to use for testing.
     *
     * @var array
     */
    protected $array1;
    
    /**
     * Array to use for testing.
     *
     * @var array
     */
    protected $array2;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->array1 = [
            'same' => 'yes',
            'different' => 'no',
            'array_empty_diff' => [],
            'null' => NULL,
            'int_diff' => 1,
            'array_diff' => [
                'same' => 'same',
                'array' => [
                    'same' => 'same',
                ],
            ],
            'array_compared_to_string' => [
                'value',
            ],
            'string_compared_to_array' => 'value',
            'new' => 'new',
        ];
        $this->array2 = [
            'same' => 'yes',
            'different' => 'yes',
            'array_empty_diff' => [],
            'null' => NULL,
            'int_diff' => '1',
            'array_diff' => [
                'same' => 'different',
                'array' => [
                    'same' => 'same',
                ],
            ],
            'array_compared_to_string' => 'value',
            'string_compared_to_array' => [
                'value',
            ],
        ];
    }
    
    /**
     * Tests DiffArray::diffAssocRecursive().
     */
    public function testDiffAssocRecursive() {
        $expected = [
            'different' => 'no',
            'int_diff' => 1,
            // The 'array' key should not be returned, as it's the same.
'array_diff' => [
                'same' => 'same',
            ],
            'array_compared_to_string' => [
                'value',
            ],
            'string_compared_to_array' => 'value',
            'new' => 'new',
        ];
        $this->assertSame($expected, DiffArray::diffAssocRecursive($this->array1, $this->array2));
    }

}