class BlockRegionTest

class BlockRegionTest extends UnitTestCase {
    
    /**
     * Transforms a value through the block_region plugin.
     *
     * @param array $value
     *   The value to transform.
     * @param \Drupal\migrate\Row|null $row
     *   (optional) The mocked row.
     *
     * @return array|string
     *   The transformed value.
     */
    protected function transform(array $value, ?Row $row = NULL) {
        $executable = $this->prophesize(MigrateExecutableInterface::class)
            ->reveal();
        if (empty($row)) {
            $row = $this->prophesize(Row::class)
                ->reveal();
        }
        $configuration = [
            'map' => [
                'bartik' => [
                    'bartik' => [
                        'triptych_first' => 'triptych_first',
                        'triptych_middle' => 'triptych_second',
                        'triptych_last' => 'triptych_third',
                    ],
                ],
            ],
            'default_value' => 'content',
        ];
        $plugin = new BlockRegion($configuration, 'block_region', [], $configuration['map']['bartik']['bartik']);
        return $plugin->transform($value, $executable, $row, 'foo');
    }
    
    /**
     * Tests transforming a block with the same theme and an existing region.
     *
     * If the source and destination themes are identical, the region should only
     * be passed through if it actually exists in the destination theme.
     *
     * @covers ::transform
     */
    public function testTransformSameThemeRegionExists() : void {
        $this->assertSame('triptych_second', $this->transform([
            'bartik',
            'bartik',
            'triptych_middle',
        ]));
    }
    
    /**
     * Tests transforming a block with the same theme and a non-existent region.
     *
     * If the source and destination themes are identical, the region should be
     * changed to 'content' if it doesn't exist in the destination theme.
     *
     * @covers ::transform
     */
    public function testTransformSameThemeRegionNotExists() : void {
        $this->assertSame('content', $this->transform([
            'bartik',
            'bartik',
            'footer',
        ]));
    }

}