SimpleTest::testMapSimpleUnderscoreSetter PHP Method

    public function testMapSimpleUnderscoreSetter()
    {
        $jm = new JsonMapper();
        $sn = $jm->map(json_decode('{"under_score_setter":"blubb"}'), new JsonMapperTest_Simple());
        $this->assertInternalType('string', $sn->internalData['under_score_setter']);
        $this->assertEquals('blubb', $sn->internalData['under_score_setter']);
    }