package org.springframework.yarn.support.statemachine;
import static org.hamcrest.Matchers.is;
import static org.junit.Assert.assertThat;
import org.junit.Test;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.task.SyncTaskExecutor;
import org.springframework.core.task.TaskExecutor;
import org.springframework.messaging.support.MessageBuilder;
import org.springframework.yarn.support.statemachine.config.EnableStateMachineFactory;
import org.springframework.yarn.support.statemachine.config.EnumStateMachineConfigurerAdapter;
import org.springframework.yarn.support.statemachine.config.EnumStateMachineFactory;
import org.springframework.yarn.support.statemachine.config.builders.StateMachineStateConfigurer;
import org.springframework.yarn.support.statemachine.config.builders.StateMachineTransitionConfigurer;
import org.springframework.yarn.support.statemachine.state.State;
public class StateMachineFactoryTests extends AbstractStateMachineTests {
@SuppressWarnings({ "unchecked" })
@Test
public void testMachineFromFactory() {
AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext(Config.class);
EnumStateMachineFactory<TestStates, TestEvents> stateMachineFactory =
ctx.getBean(StateMachineSystemConstants.DEFAULT_ID_STATEMACHINEFACTORY, EnumStateMachineFactory.class);
StateMachine<State<TestStates, TestEvents>, TestEvents> machine = stateMachineFactory.getStateMachine();
assertThat(machine.getState().getId(), is(TestStates.S1));
machine.sendEvent(MessageBuilder.withPayload(TestEvents.E1).build());
assertThat(machine.getState().getId(), is(TestStates.S2));
ctx.close();
}
@Configuration
@EnableStateMachineFactory
static class Config extends EnumStateMachineConfigurerAdapter<TestStates, TestEvents> {
@Override
public void configure(StateMachineStateConfigurer<TestStates, TestEvents> states) throws Exception {
states
.withStates()
.initial(TestStates.S1)
.state(TestStates.S1)
.state(TestStates.S2);
}
@Override
public void configure(StateMachineTransitionConfigurer<TestStates, TestEvents> transitions) throws Exception {
transitions
.withExternal()
.source(TestStates.S1)
.target(TestStates.S2)
.event(TestEvents.E1);
}
@Bean
public TaskExecutor taskExecutor() {
return new SyncTaskExecutor();
}
}
}