22. 测试流程
本章将教你如何测试流程。
22.1. 扩展摘要XmlFlow执行测试
要测试基于XML的流程定义的执行,你必须扩展摘要XmlFlow执行测试如下:
public class BookingFlowExecutionTests extends AbstractXmlFlowExecutionTests {
}
22.2. 指定通往测试流程的路径
至少,你必须覆盖getResource(FlowDefinitionResourceFactory)要返回你想测试的流程路径,具体如下:
@Override
protected FlowDefinitionResource getResource(FlowDefinitionResourceFactory resourceFactory) {
return resourceFactory.createFileResource("src/main/webapp/WEB-INF/hotels/booking/booking.xml");
}
22.3. 记录流依赖关系
如果你的流程依赖外部托管服务,你也必须覆盖configureFlowBuilderContext(MockFlowBuilderContext)注册这些服务的简历或模拟服务,具体如下:
@Override
protected void configureFlowBuilderContext(MockFlowBuilderContext builderContext) {
builderContext.registerBean("bookingService", new StubBookingService());
}
如果你的流从另一个流延伸,或者有状态延伸其他状态,你也必须覆盖getModelResources(FlowDefinitionResourceFactory)返回父流的路径如下:
@Override
protected FlowDefinitionResource[] getModelResources(FlowDefinitionResourceFactory resourceFactory) {
return new FlowDefinitionResource[] {
resourceFactory.createFileResource("src/main/webapp/WEB-INF/common/common.xml")
};
}
22.4. 测试流程启动
以下示例展示了如何让你的第一个测试练习流程的启动:
public void testStartBookingFlow() {
Booking booking = createTestBooking();
MutableAttributeMap input = new LocalAttributeMap();
input.put("hotelId", "1");
MockExternalContext context = new MockExternalContext();
context.setCurrentUser("keith");
startFlow(input, context);
assertCurrentStateEquals("enterBookingDetails");
assertTrue(getRequiredFlowAttribute("booking") instanceof Booking);
}
断言通常会验证流是否处于你预期的状态。
22.5. 测试流程事件处理
你可以定义额外的测试来练习流事件处理行为。
你的目标应该是锻炼流程中的所有路径。
你可以利用方便的setCurrentState(String)跳转到你想开始测试的流程状态的方法如下:
public void testEnterBookingDetails_Proceed() {
setCurrentState("enterBookingDetails");
getFlowScope().put("booking", createTestBooking());
MockExternalContext context = new MockExternalContext();
context.setEventId("proceed");
resumeFlow(context);
assertCurrentStateEquals("reviewBooking");
}
22.6. 嘲讽子流
为了测试调用子流程,你可以注册一个子流程的模拟实现,该实现断言输入已正确传递,并返回适合你的测试场景的正确结果,具体如下:
public void testBookHotel() {
setCurrentState("reviewHotel");
Hotel hotel = new Hotel();
hotel.setId(1L);
hotel.setName("Jameson Inn");
getFlowScope().put("hotel", hotel);
getFlowDefinitionRegistry().registerFlowDefinition(createMockBookingSubflow());
MockExternalContext context = new MockExternalContext();
context.setEventId("book");
resumeFlow(context);
// verify flow ends on 'bookingConfirmed'
assertFlowExecutionEnded();
assertFlowExecutionOutcomeEquals("finish");
}
public Flow createMockBookingSubflow() {
Flow mockBookingFlow = new Flow("booking");
mockBookingFlow.setInputMapper(new Mapper() {
public MappingResults map(Object source, Object target) {
// assert that 1L was passed in as input
assertEquals(1L, ((AttributeMap) source).get("hotelId"));
return null;
}
});
// immediately return the bookingConfirmed outcome so the caller can respond
new EndState(mockBookingFlow, "bookingConfirmed");
return mockBookingFlow;
}