DataSizeTest.php

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<?php
/* Copyright (c) 2017 Daniel Weise <daniel.weise@concepts-and-training.de> Extended GPL, see docs/LICENSE */

require_once("./libs/composer/vendor/autoload.php");

use ILIAS\Data\DataSize;
use PHPUnit\Framework\TestCase;

class DataSizeTest extends TestCase
{
    public function test_normal($a, $b, $expected, $expected_in_bytes)
    {
        $ds = new DataSize($a, $b);
        $this->assertEquals($a / $b, $ds->getSize());
        $this->assertEquals($b, $ds->getUnit());
        $this->assertEquals($expected, $ds->__toString());
        if ($expected_in_bytes) {
            $this->assertEquals($expected_in_bytes, $ds->inBytes());
        }
    }

    public function test_division_by_zero()
    {
        try {
            $ds = new DataSize(4533, 0);
            $this->assertFalse("This should not happen");
        } catch (\Exception $e) {
            $this->assertTrue(true);
        }
    }

    public function tDataProvider()
    {
        return [
            [122, 1000, "0.122 KB", 122],
            [-122, 1000, "-0.122 KB", -122],
            [122, 1000000, "0.000122 MB", 122],
            [-122, 1000000, "-0.000122 MB", -122],
            [122, 1000000000, "1.22E-7 GB", 122],
            [-122, 1000000000, "-1.22E-7 GB", -122],
            [122, 1000000000000, "1.22E-10 TB", null], // There is a float rounding error here
            [-122, 1000000000000, "-1.22E-10 TB", null], // There is a float rounding error here
            [122, 1000000000000000, "1.22E-13 PB", 122],
            [-122, 1000000000000000, "-1.22E-13 PB", -122],
            [122, 1000000000000000000, "1.22E-16 EB", 122],
            [-122, 1000000000000000000, "-1.22E-16 EB", -122],
            [122, 1024, "0.119140625 KiB", 122],
            [-122, 1024, "-0.119140625 KiB", -122],
            [122, 1048576, "0.00011634826660156 MiB", 122],
            [-122, 1048576, "-0.00011634826660156 MiB", -122],
            [122, 1073741824, "1.1362135410309E-7 GiB", 122],
            [-122, 1073741824, "-1.1362135410309E-7 GiB", -122],
            [122, 1099511627776, "1.109583536163E-10 TiB", 122],
            [-122, 1099511627776, "-1.109583536163E-10 TiB", -122],
            [122, 1125899906842624, "1.0835776720342E-13 PiB", 122],
            [-122, 1125899906842624, "-1.0835776720342E-13 PiB", -122],
            [122, 1152921504606846976, "1.0581813203459E-16 EiB", 122],
            [-122, 1152921504606846976, "-1.0581813203459E-16 EiB", -122],
            [10 * DataSize::KiB, DataSize::KiB, "10 KiB", 10 * DataSize::KiB]

            // This tests will fail because the second param of DataSize
            // needs an integer and this numbers are to big.
            // [122, 1000000000000000000000, "1.22E-19 ZB"],
            // [-122, 1000000000000000000000, "-1.22E-19 ZB"],
            // [122, 1000000000000000000000000, "1.22E-19 YB"],
            // [-122, 1000000000000000000000000, "-1.22E-19 YB"]
        ];
    }
}