change: 代码整理、定向切换时校验当前状态.

src/test/java/com/serliunx/statemanagement/MachineTest.java

@@ -22,20 +22,23 @@ public class MachineTest {
 	public void testStandardStateMachine() {
 		StateMachine<PrinterState> stateMachine = StateMachineBuilder.from(PrinterState.class)
 				.async(false)
+				.states(PrinterState.values())
+				.executor(Executors.newFixedThreadPool(16))
 				.whenLeave(PrinterState.PRINTING, h -> {
 					System.out.println(Thread.currentThread().getName() + ": leave PRINTING");
 				})
-				.states(PrinterState.values())
-				.executor(Executors.newFixedThreadPool(16))
 				.whenEntry(PrinterState.SCANNING, h -> {
 					System.out.println(Thread.currentThread().getName() + ": " + h.getFrom() + " >>> " + h.getTo());
-				}, false)
+				})
 				.whenEntry(PrinterState.PRINTING, h -> {
 					System.out.println(Thread.currentThread().getName() + ": " + h.getFrom() + " >>> " + h.getTo());
-				}, false, Executors.newFixedThreadPool(1))
+				})
 				.exchange(PrinterState.STOPPED, PrinterState.IDLE, h -> {
 					System.out.println(Thread.currentThread().getName() + ": " + h.getFrom() + " >>> " + h.getTo());
 				})
 				.build();
+
+		stateMachine.switchTo(PrinterState.PRINTING);
+		stateMachine.switchNext();
 	}
 }

src/test/java/com/serliunx/statemanagement/ManagerTest.java

@@ -1,5 +1,8 @@
 package com.serliunx.statemanagement;
 
+import com.serliunx.statemanagement.manager.DefaultUnidirectionalStateManager;
+import com.serliunx.statemanagement.manager.UnidirectionalStateManager;
+import com.serliunx.statemanagement.support.PrinterState;
 import lombok.extern.slf4j.Slf4j;
 import org.junit.Test;
 
@@ -15,6 +18,10 @@ public class ManagerTest {
 
 	@Test
 	public void testUnidirectionalStateManager() {
+		UnidirectionalStateManager<PrinterState> unidirectionalStateManager =
+				new DefaultUnidirectionalStateManager<>(PrinterState.values());
 
+		System.out.println(unidirectionalStateManager.switchTo(PrinterState.IDLE));
+		System.out.println(unidirectionalStateManager.switchTo(PrinterState.SCANNING));
 	}
 }