/*
* 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.action;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.Matchers.contains;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
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.expression.Expression;
import org.springframework.expression.ExpressionParser;
import org.springframework.expression.spel.standard.SpelExpressionParser;
import org.springframework.messaging.support.MessageBuilder;
import org.springframework.statemachine.AbstractStateMachineTests;
import org.springframework.statemachine.StateMachine;
import org.springframework.statemachine.StateMachineSystemConstants;
import org.springframework.statemachine.config.EnableStateMachine;
import org.springframework.statemachine.config.EnumStateMachineConfigurerAdapter;
import org.springframework.statemachine.config.builders.StateMachineStateConfigurer;
import org.springframework.statemachine.config.builders.StateMachineTransitionConfigurer;
public class SpelExpressionActionTests extends AbstractStateMachineTests {
@SuppressWarnings({ "unchecked" })
@Test
public void testSpelActionSendsEvent() throws Exception {
AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext(Config1.class);
assertTrue(ctx.containsBean(StateMachineSystemConstants.DEFAULT_ID_STATEMACHINE));
StateMachine<TestStates,TestEvents> machine =
ctx.getBean(StateMachineSystemConstants.DEFAULT_ID_STATEMACHINE, StateMachine.class);
TestStateMachineListener listener = new TestStateMachineListener();
machine.addStateListener(listener);
machine.start();
listener.reset(2, 0);
machine.sendEvent(MessageBuilder.withPayload(TestEvents.E1).build());
assertThat(listener.stateChangedLatch.await(5, TimeUnit.SECONDS), is(true));
assertThat(machine.getState().getIds(), contains(TestStates.S3));
ctx.close();
}
private static class TestSpelAction extends SpelExpressionAction<TestStates, TestEvents> {
public TestSpelAction(Expression expression) {
super(expression);
}
}
@Configuration
@EnableStateMachine
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, TestEvents.E2)
.state(TestStates.S2)
.state(TestStates.S3);
}
@Override
public void configure(StateMachineTransitionConfigurer<TestStates, TestEvents> transitions) throws Exception {
transitions
.withExternal()
.source(TestStates.S1)
.target(TestStates.S2)
.event(TestEvents.E1)
.action(testAction1())
.and()
.withExternal()
.source(TestStates.S2)
.target(TestStates.S3)
.event(TestEvents.E2);
}
@Bean
public TestSpelAction testAction1() {
ExpressionParser parser = new SpelExpressionParser();
return new TestSpelAction(
parser.parseExpression("stateMachine.sendEvent(T(org.springframework.statemachine.AbstractStateMachineTests.TestEvents).E2)"));
}
}
}