/*
* Copyright 2017 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.trigger;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.Matchers.containsInAnyOrder;
import static org.junit.Assert.assertThat;
import java.util.Queue;
import java.util.concurrent.CountDownLatch;
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.statemachine.AbstractStateMachineTests;
import org.springframework.statemachine.StateContext;
import org.springframework.statemachine.StateMachine;
import org.springframework.statemachine.TestUtils;
import org.springframework.statemachine.action.Action;
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 CleanTimerTests extends AbstractStateMachineTests {
@Override
protected AnnotationConfigApplicationContext buildContext() {
return new AnnotationConfigApplicationContext();
}
@SuppressWarnings("unchecked")
@Test
public void testMachineStopStopsTriggering() throws Exception {
context.register(BaseConfig.class, Config1.class);
context.refresh();
StateMachine<TestStates, TestEvents> machine = context.getBean(StateMachine.class);
TestTimerAction action = context.getBean("testTimerAction", TestTimerAction.class);
Object stateMachineExecutor = TestUtils.readField("stateMachineExecutor", machine);
Queue<?> triggerQueue = TestUtils.readField("triggerQueue", stateMachineExecutor);
machine.start();
assertThat(machine.getState().getIds(), containsInAnyOrder(TestStates.S1));
machine.sendEvent(TestEvents.E1);
Thread.sleep(100);
machine.stop();
int tqize1 = triggerQueue.size();
Thread.sleep(100);
int tqsize2 = triggerQueue.size();
assertThat(tqsize2, is(tqize1));
int asize1 = action.count;
Thread.sleep(100);
int asize2 = action.count;
assertThat(asize2, is(asize1));
}
@SuppressWarnings("unchecked")
@Test
public void testMoveToOtherStateStopsTriggering() throws Exception {
context.register(BaseConfig.class, Config1.class);
context.refresh();
StateMachine<TestStates, TestEvents> machine = context.getBean(StateMachine.class);
TestTimerAction action = context.getBean("testTimerAction", TestTimerAction.class);
Object stateMachineExecutor = TestUtils.readField("stateMachineExecutor", machine);
Queue<?> triggerQueue = TestUtils.readField("triggerQueue", stateMachineExecutor);
machine.start();
assertThat(machine.getState().getIds(), containsInAnyOrder(TestStates.S1));
machine.sendEvent(TestEvents.E1);
Thread.sleep(100);
machine.sendEvent(TestEvents.E2);
Thread.sleep(100);
int tqize1 = triggerQueue.size();
Thread.sleep(100);
int tqsize2 = triggerQueue.size();
assertThat(tqsize2, is(tqize1));
int asize1 = action.count;
Thread.sleep(100);
int asize2 = action.count;
assertThat(asize2, is(asize1));
}
@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.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)
.and()
.withInternal()
.source(TestStates.S2)
.action(testTimerAction())
.timer(10)
.and()
.withExternal()
.source(TestStates.S2)
.target(TestStates.S3)
.event(TestEvents.E2);
}
@Bean
public TestTimerAction testTimerAction() {
return new TestTimerAction();
}
}
private static class TestTimerAction implements Action<TestStates, TestEvents> {
int count = 0;
volatile CountDownLatch latch = new CountDownLatch(1);
@Override
public void execute(StateContext<TestStates, TestEvents> context) {
count++;
latch.countDown();
}
}
}