Plum\Plum\Converter\NullConverterTest::convertShouldConvertNullToEmptyString PHP Method

    public function convertShouldConvertNullToEmptyString()
    {
        $converter = new NullConverter();
        $this->assertSame('', $converter->convert(null));
        $this->assertSame('foo', $converter->convert('foo'));
    }