/*
* Copyright 2015 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.statemachine;
import static org.hamcrest.Matchers.contains;
import static org.hamcrest.Matchers.is;
import static org.junit.Assert.assertThat;
import java.util.EnumSet;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import org.junit.Test;
import org.springframework.context.SmartLifecycle;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.task.SimpleAsyncTaskExecutor;
import org.springframework.core.task.SyncTaskExecutor;
import org.springframework.core.task.TaskExecutor;
import org.springframework.messaging.support.MessageBuilder;
import org.springframework.statemachine.config.EnableStateMachineFactory;
import org.springframework.statemachine.config.EnumStateMachineConfigurerAdapter;
import org.springframework.statemachine.config.ObjectStateMachineFactory;
import org.springframework.statemachine.config.StateMachineFactory;
import org.springframework.statemachine.config.builders.StateMachineConfigurationConfigurer;
import org.springframework.statemachine.config.builders.StateMachineStateConfigurer;
import org.springframework.statemachine.config.builders.StateMachineTransitionConfigurer;
import org.springframework.statemachine.listener.StateMachineListenerAdapter;
import org.springframework.statemachine.state.State;
public class StateMachineFactoryTests extends AbstractStateMachineTests {
@Override
protected AnnotationConfigApplicationContext buildContext() {
return new AnnotationConfigApplicationContext();
}
@SuppressWarnings({ "unchecked" })
@Test
public void testMachineFromFactory() {
context.register(Config1.class);
context.refresh();
ObjectStateMachineFactory<TestStates, TestEvents> stateMachineFactory =
context.getBean(StateMachineSystemConstants.DEFAULT_ID_STATEMACHINEFACTORY, ObjectStateMachineFactory.class);
StateMachine<TestStates,TestEvents> machine = stateMachineFactory.getStateMachine();
machine.start();
assertThat(machine.getState().getIds(), contains(TestStates.S1));
machine.sendEvent(MessageBuilder.withPayload(TestEvents.E1).build());
assertThat(machine.getState().getIds(), contains(TestStates.S2));
}
@SuppressWarnings({ "unchecked" })
@Test
public void testAutoStartFlagOn() throws Exception {
context.register(Config2.class);
context.refresh();
StateMachineFactory<TestStates, TestEvents> stateMachineFactory =
context.getBean(StateMachineSystemConstants.DEFAULT_ID_STATEMACHINEFACTORY, StateMachineFactory.class);
StateMachine<TestStates,TestEvents> machine = stateMachineFactory.getStateMachine();
assertThat(((SmartLifecycle)machine).isAutoStartup(), is(true));
assertThat(((SmartLifecycle)machine).isRunning(), is(true));
}
@SuppressWarnings({ "unchecked" })
@Test
public void testAutoStartFlagOff() throws Exception {
context.register(Config3.class);
context.refresh();
StateMachineFactory<TestStates, TestEvents> stateMachineFactory =
context.getBean(StateMachineSystemConstants.DEFAULT_ID_STATEMACHINEFACTORY, StateMachineFactory.class);
StateMachine<TestStates,TestEvents> machine = stateMachineFactory.getStateMachine();
assertThat(((SmartLifecycle)machine).isAutoStartup(), is(false));
assertThat(((SmartLifecycle)machine).isRunning(), is(false));
}
@SuppressWarnings({ "unchecked" })
@Test
public void testCustomNamedFactory() {
context.register(Config4.class);
context.refresh();
StateMachineFactory<TestStates, TestEvents> stateMachineFactory =
context.getBean("factory1", ObjectStateMachineFactory.class);
StateMachine<TestStates,TestEvents> machine = stateMachineFactory.getStateMachine();
machine.start();
assertThat(machine.getState().getIds(), contains(TestStates.S1));
}
@SuppressWarnings({ "unchecked" })
@Test
public void testMultipleCustomNamedFactories() {
context.register(Config4.class, Config5.class);
context.refresh();
StateMachineFactory<TestStates, TestEvents> stateMachineFactory1 =
context.getBean("factory1", ObjectStateMachineFactory.class);
StateMachineFactory<TestStates, TestEvents> stateMachineFactory2 =
context.getBean("factory2", ObjectStateMachineFactory.class);
StateMachine<TestStates,TestEvents> machine1 = stateMachineFactory1.getStateMachine();
StateMachine<TestStates,TestEvents> machine2 = stateMachineFactory2.getStateMachine();
machine1.start();
machine2.start();
assertThat(machine1.getState().getIds(), contains(TestStates.S1));
assertThat(machine2.getState().getIds(), contains(TestStates.S1));
}
@SuppressWarnings({ "unchecked" })
@Test
public void testMachineFromFactoryWithAsyncExecutorAutoStart() throws Exception {
context.register(Config6.class);
context.refresh();
ObjectStateMachineFactory<TestStates, TestEvents> stateMachineFactory =
context.getBean(StateMachineSystemConstants.DEFAULT_ID_STATEMACHINEFACTORY, ObjectStateMachineFactory.class);
StateMachine<TestStates,TestEvents> machine = stateMachineFactory.getStateMachine();
// factory waits machine to get started so we
// should have state immediately
assertThat(machine.getState().getIds(), contains(TestStates.S1));
// still need to listen state chance manually before
// checking state as execution happens in a thread
TestStateMachineListener listener = new TestStateMachineListener();
machine.addStateListener(listener);
machine.sendEvent(MessageBuilder.withPayload(TestEvents.E1).build());
assertThat(listener.latch.await(2, TimeUnit.SECONDS), is(true));
assertThat(machine.getState().getIds(), contains(TestStates.S2));
}
@Configuration
@EnableStateMachineFactory
static class Config1 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();
}
}
@Configuration
@EnableStateMachineFactory
public static class Config2 extends EnumStateMachineConfigurerAdapter<TestStates, TestEvents> {
@Override
public void configure(StateMachineConfigurationConfigurer<TestStates, TestEvents> config) throws Exception {
config
.withVerifier()
.enabled(false)
.and()
.withConfiguration()
.autoStartup(true);
}
@Override
public void configure(StateMachineStateConfigurer<TestStates, TestEvents> states) throws Exception {
states
.withStates()
.initial(TestStates.S1)
.states(EnumSet.allOf(TestStates.class));
}
}
@Configuration
@EnableStateMachineFactory
public static class Config3 extends EnumStateMachineConfigurerAdapter<TestStates, TestEvents> {
@Override
public void configure(StateMachineConfigurationConfigurer<TestStates, TestEvents> config) throws Exception {
config
.withVerifier()
.enabled(false)
.and()
.withConfiguration()
.autoStartup(false);
}
@Override
public void configure(StateMachineStateConfigurer<TestStates, TestEvents> states) throws Exception {
states
.withStates()
.initial(TestStates.S1)
.states(EnumSet.allOf(TestStates.class));
}
}
@Configuration
@EnableStateMachineFactory(name = "factory1")
public static class Config4 extends EnumStateMachineConfigurerAdapter<TestStates, TestEvents> {
@Override
public void configure(StateMachineConfigurationConfigurer<TestStates, TestEvents> config) throws Exception {
config
.withConfiguration()
.autoStartup(false);
}
@Override
public void configure(StateMachineStateConfigurer<TestStates, TestEvents> states) throws Exception {
states
.withStates()
.initial(TestStates.S1)
.states(EnumSet.allOf(TestStates.class));
}
@Override
public void configure(StateMachineTransitionConfigurer<TestStates, TestEvents> transitions) throws Exception {
transitions
.withExternal()
.source(TestStates.S1)
.target(TestStates.S2)
.event(TestEvents.E1);
}
}
@Configuration
@EnableStateMachineFactory(name = "factory2")
public static class Config5 extends EnumStateMachineConfigurerAdapter<TestStates, TestEvents> {
@Override
public void configure(StateMachineConfigurationConfigurer<TestStates, TestEvents> config) throws Exception {
config
.withConfiguration()
.autoStartup(false);
}
@Override
public void configure(StateMachineStateConfigurer<TestStates, TestEvents> states) throws Exception {
states
.withStates()
.initial(TestStates.S1)
.states(EnumSet.allOf(TestStates.class));
}
@Override
public void configure(StateMachineTransitionConfigurer<TestStates, TestEvents> transitions) throws Exception {
transitions
.withExternal()
.source(TestStates.S1)
.target(TestStates.S2)
.event(TestEvents.E1);
}
}
@Configuration
@EnableStateMachineFactory
static class Config6 extends EnumStateMachineConfigurerAdapter<TestStates, TestEvents> {
@Override
public void configure(StateMachineConfigurationConfigurer<TestStates, TestEvents> config) throws Exception {
config
.withConfiguration()
.autoStartup(true)
.taskExecutor(new SimpleAsyncTaskExecutor());
}
@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);
}
}
static class TestStateMachineListener extends StateMachineListenerAdapter<TestStates, TestEvents> {
CountDownLatch latch = new CountDownLatch(1);
@Override
public void stateChanged(State<TestStates, TestEvents> from, State<TestStates, TestEvents> to) {
latch.countDown();
}
}
}