ArraySplitTest.php

<?php
use PHPUnit\Framework\TestCase;

class ArraySplitTest extends TestCase
{
    /**
     * Array of data to test with, items which are slot_type 1 are regular, and slot_type 2 split up groups
     *
     * @var array[]
     */
    public $data = [
        [
            'name' => 'First',
            'slot' => [
                'slot_type' => 1,
                'type' => [
                    'id' => 1
                ]
            ]
        ],
                [
            'name' => 'Go to second',
            'slot' => [
                'slot_type' => 2,
                'type' => [
                    'id' => 2
                ]
            ]
        ],
        [
            'name' => 'Third',
            'slot' => [
                'slot_type' => 1,
                'type' => [
                    'id' => 1
                ]
            ]
        ],
        [
            'name' => 'Go to fifth',
            'slot' => [
                'slot_type' => 2,
                'type' => [
                    'id' => 2
                ]
            ]
        ],
        [
            'name' => 'Fifth',
            'slot' => [
                'slot_type' => 1,
                'type' => [
                    'id' => 1
                ]
            ]
        ],
        [
            'name' => 'Sixth',
            'slot' => [
                'slot_type' => 1,
                'type' => [
                    'id' => 1
                ]
            ]
        ]
    ];

    /**
     * Get only the parts of the array which appear after the last occurrence of a 'slot_type = 2'
     *
     * @return void
     */
    public function testGettingTheLastSection (): void
    {
        $expected = [
            [
                'name' => 'Fifth',
                'slot' => [
                    'slot_type' => 1,
                    'type' => [
                        'id' => 1
                    ]
                ]
            ],
            [
                'name' => 'Sixth',
                'slot' => [
                    'slot_type' => 1,
                    'type' => [
                        'id' => 1
                    ]
                ]
            ]
        ];

        $reversed = array_reverse($this->data);
        $found = [];
        foreach ($reversed as $part) {
            if ($part['slot']['slot_type'] !== 2) {
                $found[] = $part;
            } elseif ($part['slot']['slot_type'] === 2) {
                break;
            }
        }

        $this->assertEquals($expected, array_reverse($found));
    }
}