class FlattenTest

class FlattenTest extends MigrateProcessTestCase {
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        $this->plugin = new Flatten([], 'flatten', []);
        parent::setUp();
    }
    
    /**
     * Tests that various array flatten operations work properly.
     *
     * @dataProvider providerTestFlatten
     */
    public function testFlatten($value, $expected) {
        $flattened = $this->plugin
            ->transform($value, $this->migrateExecutable, $this->row, 'destination_property');
        $this->assertSame($expected, $flattened);
    }
    
    /**
     * Provides data for the testFlatten.
     */
    public function providerTestFlatten() {
        $object = (object) [
            'a' => 'test',
            'b' => '1.2',
            'c' => 'NULL',
        ];
        return [
            'array' => [
                [
                    1,
                    2,
                    [
                        3,
                        4,
                        [
                            5,
                        ],
                    ],
                    [],
                    [
                        7,
                        8,
                    ],
                ],
                [
                    1,
                    2,
                    3,
                    4,
                    5,
                    7,
                    8,
                ],
            ],
            'object' => [
                $object,
                [
                    'test',
                    '1.2',
                    'NULL',
                ],
            ],
        ];
    }
    
    /**
     * Tests that Flatten throws a MigrateException.
     *
     * @dataProvider providerTestFlattenInvalid
     */
    public function testFlattenInvalid($value) {
        $this->expectException(MigrateException::class);
        $type = gettype($value);
        $this->expectExceptionMessage(sprintf("Input should be an array or an object, instead it was of type '%s'", $type));
        $this->plugin
            ->transform($value, $this->migrateExecutable, $this->row, 'destination_property');
    }
    
    /**
     * Provides data for the testFlattenInvalid.
     */
    public function providerTestFlattenInvalid() {
        $xml_str = <<<XML
<xml version='1.0'?>
<authors>
 <name>Ada Lovelace</name>
</authors>
XML;
        return [
            'empty string' => [
                '',
            ],
            'string' => [
                'Kate Sheppard',
            ],
            'integer' => [
                1,
            ],
            'float' => [
                1.2,
            ],
            'NULL' => [
                NULL,
            ],
            'boolean' => [
                TRUE,
            ],
            'xml' => [
                $xml_str,
            ],
        ];
    }

}