/**
* Test to select the previous, the next state machines and similar state machines work on indices
*
* @return void
*/
public function testCanSelectNextOrPreviousOrRandomIndexState()
{
$stateMachine = new StateMachine();
$stateMachine->addState("<?xml version=\"1.0\" encoding=\"utf-8\"?><listofitems><item id=\"1\" index=\"1\">First</item><item id=\"2\">Second</item></listofitems>");
$stateMachine->addState("<?xml version=\"1.0\" encoding=\"utf-8\"?><listofitems><item id=\"2\">second</item><item id=\"3\">Third</item></listofitems>");
$this->assertEquals(0, $stateMachine->getFirstIndex());
$this->assertEquals(2, $stateMachine->getLastIndex());
$stateMachine->checkPoint(1);
$this->assertEquals(false, $stateMachine->getState(0));
$this->assertEquals(1, $stateMachine->getFirstIndex());
$this->assertEquals(2, $stateMachine->getLastIndex());
$this->assertEquals(false, $stateMachine->getState(3));
$this->assertXmlStringEqualsXmlString("<?xml version=\"1.0\" encoding=\"utf-8\"?><listofitems><item id=\"1\" index=\"1\">First</item><item id=\"2\">Second</item></listofitems>", $stateMachine->getState(1));
$this->assertXmlStringEqualsXmlString("<?xml version=\"1.0\" encoding=\"utf-8\"?><listofitems><item id=\"2\">second</item><item id=\"3\">Third</item></listofitems>", $stateMachine->getState(2));
$stateMachine->addState("<?xml version=\"1.0\" encoding=\"utf-8\"?><listofitems><item id=\"4\">fourth</item></listofitems>");
$this->assertEquals(1, $stateMachine->getFirstIndex());
$this->assertXmlStringEqualsXmlString("<?xml version=\"1.0\" encoding=\"utf-8\"?><listofitems><item id=\"1\" index=\"1\">First</item><item id=\"2\">Second</item></listofitems>", $stateMachine->getState($stateMachine->getFirstIndex()));
$this->assertEquals(3, $stateMachine->getLastIndex());
$this->assertXmlStringEqualsXmlString("<?xml version=\"1.0\" encoding=\"utf-8\"?><listofitems><item id=\"4\">fourth</item></listofitems>", $stateMachine->getState($stateMachine->getLastIndex()));
}
