json-machine/test/JsonMachineTest/StringChunksTest.php

<?php

declare(strict_types=1);

namespace JsonMachineTest;

use JsonMachine\StringChunks;

/**
 * @covers \JsonMachine\StringChunks
 */
class StringChunksTest extends \PHPUnit_Framework_TestCase
{
    /**
     * @dataProvider data_testGeneratorYieldsStringChunks
     */
    public function testGeneratorYieldsStringChunks($string, $chunkSize, array $expectedResult)
    {
        $stringBytes = new StringChunks($string, $chunkSize);
        $result = iterator_to_array($stringBytes);

        $this->assertSame($expectedResult, $result);
    }

    public function data_testGeneratorYieldsStringChunks()
    {
        return [
            // single-byte:
            ['onetwo', 6, ['onetwo']],
            ['onetwo', 7, ['onetwo']],
            ['onetwo', 3, ['one', 'two']],
            ['onetwo', 4, ['onet', 'wo']],
        ];
    }
}