package org.jbpm.jpdl.el;import junit.framework.TestCase;import org.jbpm.JbpmException;import org.jbpm.graph.def.ProcessDefinition;import org.jbpm.graph.exe.ProcessInstance;public class DecisionExpressionTest extends TestCase {public static class Customer {String priority;int number;public Customer(String priority) {this.priority = priority;}public Customer(int number) {this.number = number;}public String getPriority() {return priority;}public int getNumber() {return number;}}public ProcessDefinition createCustomerPriorityProcess() {return ProcessDefinition.parseXmlString("<process-definition>" +"  <start-state>" +"    <transition to=‘d‘/>" +"  </start-state>" +"  <decision name=‘d‘ expression=‘#{customer.priority}‘>" +"    <transition name=‘LOW‘ to=‘l‘ />" +"    <transition name=‘MEDIUM‘ to=‘m‘ />" +"    <transition name=‘HIGH‘ to=‘h‘ />" +"  </decision>" +"  <state name=‘l‘ />" +"  <state name=‘m‘ />" +"  <state name=‘h‘ />" +"</process-definition>");}public void testCustomerPriorityLow() {ProcessDefinition processDefinition = createCustomerPriorityProcess();ProcessInstance processInstance = new ProcessInstance(processDefinition);processInstance.getContextInstance().setVariable("customer", new Customer("LOW"));processInstance.signal();assertEquals("l", processInstance.getRootToken().getNode().getName());}public void testCustomerPriorityMedium() {ProcessDefinition processDefinition = createCustomerPriorityProcess();ProcessInstance processInstance = new ProcessInstance(processDefinition);processInstance.getContextInstance().setVariable("customer", new Customer("MEDIUM"));processInstance.signal();assertEquals("m", processInstance.getRootToken().getNode().getName());}public void testCustomerPriorityUndefined() {ProcessDefinition processDefinition = createCustomerPriorityProcess();ProcessInstance processInstance = new ProcessInstance(processDefinition);processInstance.getContextInstance().setVariable("customer", new Customer("UNDEFINED"));try {processInstance.signal();fail("expected exception");} catch (JbpmException e) {assertTrue(e.getMessage().indexOf("non existing transition")!=-1);// OK}}public void testCustomerPriorityNull() {ProcessDefinition processDefinition = createCustomerPriorityProcess();ProcessInstance processInstance = new ProcessInstance(processDefinition);processInstance.getContextInstance().setVariable("customer", new Customer(null));try {processInstance.signal();fail("expected exception");} catch (JbpmException e) {// OK}}public ProcessDefinition createBooleanExpressionProcess() {return ProcessDefinition.parseXmlString("<process-definition>" +"  <start-state>" +"    <transition to=‘d‘/>" +"  </start-state>" +"  <decision name=‘d‘ expression=‘#{customer.number > 5}‘>" +"    <transition name=‘true‘ to=‘high-numbered-customer‘ />" +"    <transition name=‘false‘ to=‘low-numbered-customer‘ />" +"  </decision>" +"  <state name=‘high-numbered-customer‘ />" +"  <state name=‘low-numbered-customer‘ />" +"</process-definition>");}public void testBooleanExpressionTrue() {ProcessDefinition processDefinition = createBooleanExpressionProcess();ProcessInstance processInstance = new ProcessInstance(processDefinition);processInstance.getContextInstance().setVariable("customer", new Customer(9));processInstance.signal();assertEquals("high-numbered-customer", processInstance.getRootToken().getNode().getName());}public void testBooleanExpressionFalse() {ProcessDefinition processDefinition = createBooleanExpressionProcess();ProcessInstance processInstance = new ProcessInstance(processDefinition);processInstance.getContextInstance().setVariable("customer", new Customer(3));processInstance.signal();assertEquals("low-numbered-customer", processInstance.getRootToken().getNode().getName());}public ProcessDefinition createConditionProcess() {return ProcessDefinition.parseXmlString("<process-definition>" +"  <start-state>" +"    <transition to=‘d‘/>" +"  </start-state>" +"  <decision name=‘d‘>" +"    <transition to=‘high-numbered-customer‘>" +"      <condition  expression=‘#{customer.number > 5}‘ />" +"    </transition>" +"    <transition to=‘medium-numbered-customer‘>" +"      <condition expression=‘#{customer.number == 5}‘ />" +"    </transition>" +"    <transition to=‘low-numbered-customer‘ />" +"  </decision>" +"  <state name=‘high-numbered-customer‘ />" +"  <state name=‘medium-numbered-customer‘ />" +"  <state name=‘low-numbered-customer‘ />" +"</process-definition>");}public void testConditionHigh() {ProcessDefinition processDefinition = createConditionProcess();ProcessInstance processInstance = new ProcessInstance(processDefinition);processInstance.getContextInstance().setVariable("customer", new Customer(9));processInstance.signal();assertEquals("high-numbered-customer", processInstance.getRootToken().getNode().getName());}public void testConditionMedium() {ProcessDefinition processDefinition = createConditionProcess();ProcessInstance processInstance = new ProcessInstance(processDefinition);processInstance.getContextInstance().setVariable("customer", new Customer(5));processInstance.signal();assertEquals("high-numbered-customer", processInstance.getRootToken().getNode().getName());}public void testConditionLow() {ProcessDefinition processDefinition = createConditionProcess();ProcessInstance processInstance = new ProcessInstance(processDefinition);processInstance.getContextInstance().setVariable("customer", new Customer(3));processInstance.signal();assertEquals("high-numbered-customer", processInstance.getRootToken().getNode().getName());}}