Used to mark the initial construction of a statemachine at a certain
point in time. This method only makes sense the first time a statemachine
is initialized and used since it will do nothing once a transition has been made.
It will set the initial state on the backend which sets
the construction time.
Make sure that the transitions and states are loaded before you call this method.
in other words: the machine should be ready to go.
| public add ( string $message = null ) : boolean | ||
| $message | string | optional message. this can be used by the persistence adapter to provide extra information in the history of the machine transitions, in this case, about the first adding of this machine to the persistence layer. |
| Résultat | boolean | true if not persisted before, false otherwise |
/**
* @test
*/
public function shouldBeAbleToStoreAndRetrieveData()
{
$redis = new Redis();
$redis->setDatabase(15);
//clear the redis database for testing
$redis->flushdb();
$machine = new StateMachine(new Context(new Identifier('1', 'test-machine'), null, $redis));
//create the loader
//get the configuration from the json file
$configuration = file_get_contents(__DIR__ . '/../loader/fixture-example.json');
//set it. normally, this would be done by a seperate process that has already loaded the configuration
$redis->set(Redis::KEY_CONFIGURATION, $configuration);
//load the machine
$count = $redis->load($machine);
//add the machine to the backend system
$this->assertTrue($machine->add('this is the first addition'));
$this->assertFalse($machine->add(), 'returns false, already added');
$this->assertTrue($machine->run('this is a test run message'), 'succesful transitions so it returns true');
$this->assertEquals('b', $machine->getCurrentState());
$this->assertContains('1', $redis->getEntityIds('test-machine'));
$this->assertTrue($machine->hasEvent('goToC'));
try {
$machine->goToC();
$this->fail('should not come here');
} catch (Exception $e) {
$this->assertEquals(Exception::RULE_APPLY_FAILURE, $e->getCode());
}
$this->assertEquals('b', $machine->getCurrentState());
//create new instance of same machine
$machine2 = new StateMachine(new Context(new Identifier('1', 'test-machine'), null, $redis));
$this->assertNotSame($machine2, $machine);
$redis->load($machine2);
$this->assertEquals('b', $machine2->getCurrentState(), 'should retrieve the same value');
//create new instance of other machine
$machine3 = new StateMachine(new Context(new Identifier('2', 'test-machine'), null, $redis));
$this->assertNotSame($machine2, $machine3);
$redis->load($machine3);
$this->assertTrue($machine3->add());
$this->assertNotEquals('b', $machine3->getCurrentState()->getName(), 'should not retrieve the same value as the other machine');
$this->assertEquals('a', $machine3->getCurrentState()->getName(), 'initial state');
//echo $machine3->toString(true);
$this->assertEquals(2, $machine3->runToCompletion("go to the final state"));
$this->assertEquals('done', $machine3->getCurrentState()->getName(), 'final state');
$machine4 = new StateMachine(new Context(new Identifier('3', 'another-machine'), null, $redis));
$a = new State('begin', State::TYPE_INITIAL);
$b = new State('enter', State::TYPE_NORMAL);
$c = new State('leave', State::TYPE_FINAL);
$machine4->addTransition(new Transition($a, $b));
$machine4->addTransition(new Transition($b, $c));
$machine4->add('creating another machine to see that all goes well storing the data for multiple machines in redis');
$this->assertEquals(2, $machine4->runToCompletion('running the machine to completion'));
$ids = $redis->getEntityIds('test-machine');
$this->assertEquals(array('1', '2'), $ids);
$ids = $redis->getEntityIds('another-machine');
$this->assertEquals(array('3'), $ids);
$ids = $redis->getEntityIds('test-machine', 'done');
$this->assertEquals(array('2'), $ids, 'only 2 was run to completion and in state done');
$ids = $redis->getEntityIds('another-machine', 'leave');
$this->assertEquals(array('3'), $ids, 'only 3 was run to completion and in state leave');
//$redis->hmset("key" , array("name1" => "value1", "name2" => "value2"));
}
