/*
* 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.config;
import static org.hamcrest.Matchers.containsInAnyOrder;
import static org.hamcrest.Matchers.is;
import static org.junit.Assert.assertThat;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
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.statemachine.AbstractStateMachineTests;
import org.springframework.statemachine.StateMachine;
import org.springframework.statemachine.config.StateMachineBuilder.Builder;
import org.springframework.statemachine.listener.StateMachineListenerAdapter;
import org.springframework.statemachine.state.State;
public class ManualBuilderContextTests extends AbstractStateMachineTests {
@Override
protected AnnotationConfigApplicationContext buildContext() {
return new AnnotationConfigApplicationContext();
}
@Test
public void testAsBeanViaBuilder1() throws Exception {
context.register(Config1.class);
context.refresh();
TestListener listener = context.getBean(TestListener.class);
@SuppressWarnings("unchecked")
StateMachine<String, String> stateMachine = context.getBean(StateMachine.class);
assertThat(listener.stateMachineStartedLatch.await(2, TimeUnit.SECONDS), is(true));
assertThat(stateMachine.getState().getIds(), containsInAnyOrder("S1"));
listener.reset(1);
stateMachine.sendEvent("E1");
assertThat(listener.stateChangedLatch.await(2, TimeUnit.SECONDS), is(true));
assertThat(listener.stateChangedCount, is(1));
assertThat(stateMachine.getState().getIds(), containsInAnyOrder("S2"));
}
@Test
public void testAsBeanViaBuilder2() throws Exception {
context.register(Config2.class);
context.refresh();
TestListener listener = context.getBean(TestListener.class);
@SuppressWarnings("unchecked")
StateMachine<String, String> stateMachine = context.getBean(StateMachine.class);
stateMachine.start();
assertThat(listener.stateMachineStartedLatch.await(2, TimeUnit.SECONDS), is(true));
assertThat(stateMachine.getState().getIds(), containsInAnyOrder("S1"));
listener.reset(1);
stateMachine.sendEvent("E1");
assertThat(listener.stateChangedLatch.await(2, TimeUnit.SECONDS), is(true));
assertThat(listener.stateChangedCount, is(1));
assertThat(stateMachine.getState().getIds(), containsInAnyOrder("S2"));
}
@Configuration
static class Config1 {
@Bean
StateMachine<String, String> stateMachine() throws Exception {
Builder<String, String> builder = StateMachineBuilder.builder();
builder.configureConfiguration()
.withConfiguration()
.autoStartup(true)
.listener(testListener())
.taskExecutor(new SyncTaskExecutor());
builder.configureStates()
.withStates()
.initial("S1").state("S2");
builder.configureTransitions()
.withExternal()
.source("S1").target("S2").event("E1")
.and()
.withExternal()
.source("S2").target("S1").event("E2");
StateMachine<String, String> stateMachine = builder.build();
return stateMachine;
}
@Bean
TestListener testListener() {
return new TestListener();
}
}
@Configuration
static class Config2 {
@Bean
StateMachine<String, String> stateMachine() throws Exception {
Builder<String, String> builder = StateMachineBuilder.builder();
builder.configureConfiguration()
.withConfiguration()
.autoStartup(false)
.listener(testListener())
.taskExecutor(new SyncTaskExecutor());
builder.configureStates()
.withStates()
.initial("S1").state("S2");
builder.configureTransitions()
.withExternal()
.source("S1").target("S2").event("E1")
.and()
.withExternal()
.source("S2").target("S1").event("E2");
StateMachine<String, String> stateMachine = builder.build();
return stateMachine;
}
@Bean
TestListener testListener() {
return new TestListener();
}
}
private static class TestListener extends StateMachineListenerAdapter<String, String> {
volatile CountDownLatch stateMachineStartedLatch = new CountDownLatch(1);
volatile CountDownLatch stateChangedLatch = new CountDownLatch(1);
volatile int stateChangedCount = 0;
@Override
public void stateMachineStarted(StateMachine<String, String> stateMachine) {
stateMachineStartedLatch.countDown();
}
@Override
public void stateChanged(State<String, String> from, State<String, String> to) {
stateChangedCount++;
stateChangedLatch.countDown();
}
public void reset(int a1) {
stateChangedCount = 0;
stateChangedLatch = new CountDownLatch(a1);
}
}
}