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<?php
declare(strict_types=1);
namespace SlayerBirden\DFCodeGeneration\Generator\Tests;
use PHPUnit\Framework\TestCase;
class NullValuesRandomizerTest extends TestCase
{
/**
* @dataProvider percentageProvider
*
* @param float $percentage
*/
public function testPercentage(float $percentage)
$randomizer = new NullValuesRandomizer($percentage);
$hits = 0;
$total = 1000000;
for ($i = 0; $i < $total; ++$i) {
$randomizer->ifShouldWrite() ? ++$hits : null;
}
$expected = (int)($percentage * 100);
$actual = round($hits / $total * 100);
$this->assertThat($actual, new RangeConstraint($expected - 1, $expected + 1));
public function testThatZeroNeverCalled()
$randomizer = new NullValuesRandomizer(.0);
for ($i = 0; $i < 1000000; ++$i) {
$this->assertSame(0, $hits);
public function percentageProvider(): array
return [
[.1],
[.5],
[.0],
];
SlayerBirden /
df-code-generator
