DefaultConfigTest::testSettingAndUnsettingOptions PHP Method

    public function testSettingAndUnsettingOptions()
    {
        $this->sandbox->setOption('error_level', 1);
        $this->assertEquals(1, $this->sandbox->getOption('error_level'));
        $this->sandbox->setOption('error_level', null);
        $this->assertEquals(null, $this->sandbox->getOption('error_level'));
    }