public function testEmpty()
{
$t = new \Test\EmptyTest();
$this->assertTrue($t->testDynamicVarArrayEmpty());
$this->assertFalse($t->testDynamicVarArrayNotEmpty());
$this->assertTrue($t->testEmptyString());
$this->assertFalse($t->testNotEmptyString());
$this->assertTrue($t->testString(""));
$this->assertFalse($t->testString('this is a string'));
$this->assertTrue($t->testString('0'));
}