public function testLanguageConstructs()
{
$valueSet = [[''], ['1'], ['test'], [null], [true], [false], [['dsffd']], [[]], [0]];
$this->assertRecompilesCorrectly(function ($i) {
return isset($i);
}, $valueSet);
$this->assertRecompilesCorrectly(function ($i) {
return empty($i);
}, $valueSet);
}