/*
* 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.state;
import static org.hamcrest.Matchers.contains;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import java.util.EnumSet;
import org.junit.Test;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Configuration;
import org.springframework.statemachine.AbstractStateMachineTests;
import org.springframework.statemachine.ObjectStateMachine;
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;
/**
* Tests for functionality around state machine initial state.
*
* @author Janne Valkealahti
*
*/
public class InitialStateTests extends AbstractStateMachineTests {
@SuppressWarnings({ "unchecked" })
@Test
public void testInitialStateTransition() throws Exception {
context.register(BaseConfig.class, Config1.class);
context.refresh();
assertTrue(context.containsBean(StateMachineSystemConstants.DEFAULT_ID_STATEMACHINE));
ObjectStateMachine<TestStates,TestEvents> machine =
context.getBean(StateMachineSystemConstants.DEFAULT_ID_STATEMACHINE, ObjectStateMachine.class);
machine.start();
assertThat(machine.getState().getIds(), contains(TestStates.S1));
}
@Test(expected = Exception.class)
public void testInitialStateMissingFailure() throws Exception {
context.register(BaseConfig.class, Config2.class);
context.refresh();
}
@SuppressWarnings({ "unchecked" })
@Test
public void testInitialNoNeedAsState() throws Exception {
context.register(BaseConfig.class, Config3.class);
context.refresh();
assertTrue(context.containsBean(StateMachineSystemConstants.DEFAULT_ID_STATEMACHINE));
ObjectStateMachine<TestStates,TestEvents> machine =
context.getBean(StateMachineSystemConstants.DEFAULT_ID_STATEMACHINE, ObjectStateMachine.class);
machine.start();
assertThat(machine.getState().getIds(), contains(TestStates.SI));
machine.sendEvent(TestEvents.E1);
assertThat(machine.getState().getIds(), contains(TestStates.S1));
}
@Configuration
@EnableStateMachine
public static class Config1 extends EnumStateMachineConfigurerAdapter<TestStates, TestEvents> {
@Override
public void configure(StateMachineStateConfigurer<TestStates, TestEvents> states) throws Exception {
states
.withStates()
.initial(TestStates.SI)
.states(EnumSet.allOf(TestStates.class));
}
@Override
public void configure(StateMachineTransitionConfigurer<TestStates, TestEvents> transitions) throws Exception {
transitions
.withExternal()
.source(TestStates.SI)
.target(TestStates.S1)
.and()
.withExternal()
.source(TestStates.S1)
.target(TestStates.S2)
.event(TestEvents.E1)
.and()
.withExternal()
.source(TestStates.S2)
.target(TestStates.S3)
.event(TestEvents.E2);
}
}
@Configuration
@EnableStateMachine
public static class Config2 extends EnumStateMachineConfigurerAdapter<TestStates, TestEvents> {
@Override
public void configure(StateMachineStateConfigurer<TestStates, TestEvents> states) throws Exception {
states
.withStates()
.states(EnumSet.allOf(TestStates.class));
}
@Override
public void configure(StateMachineTransitionConfigurer<TestStates, TestEvents> transitions) throws Exception {
transitions
.withExternal()
.source(TestStates.SI)
.target(TestStates.S1);
}
}
@Configuration
@EnableStateMachine
public static class Config3 extends EnumStateMachineConfigurerAdapter<TestStates, TestEvents> {
@Override
public void configure(StateMachineStateConfigurer<TestStates, TestEvents> states) throws Exception {
states
.withStates()
.initial(TestStates.SI)
.state(TestStates.S1);
}
@Override
public void configure(StateMachineTransitionConfigurer<TestStates, TestEvents> transitions) throws Exception {
transitions
.withExternal()
.source(TestStates.SI)
.target(TestStates.S1)
.event(TestEvents.E1);
}
}
@Override
protected AnnotationConfigApplicationContext buildContext() {
return new AnnotationConfigApplicationContext();
}
}