我有一些使用 Java EE 的服务 ManagedExecutorService
(在 Wildfly 9 中)
public class FooService{
@Resource
ManagedExecutorService executorService;
}
对于 Mockito 的测试,我想使用“正常”ExecutorService
@RunWith(MockitoJUnitRunner.class)
public class FooServiceTest{
@Spy
ManagedExecutorService executorService = Executors.newFixedThreadPool(5);
}
这段代码显然无法编译,因为 ExecutorService
不是 ManagedExecutorService
。
在服务中使用 ExecutorService
时,测试运行没有错误,但 Wildfly 无法注入(inject)服务。
public class FooService{
@Resource
ExecutorService executorService;
}
@RunWith(MockitoJUnitRunner.class)
public class FooServiceTest {
@Spy
ExecutorService executorService = Executors.newFixedThreadPool(5);
}
可以通过委托(delegate)给 ExecutorService
来创建 ManagedExecutorService
:
@Spy
ManagedExecutorService executorService = new ManagedExecutorService() {
ExecutorService executorService = Executors.newFixedThreadPool(5);
@Override
public void shutdown() {
executorService.shutdown();
}
// delegate for all (12) methods
}
有没有更简单的方法在测试中使用 ExecutorService
而无需更改在 Wildfly 中运行的服务?
最佳答案
我使用注入(inject)模式:
class DefaultImpl {
static DefaultFactory me;
static DefaultFactory getCurrentInstance()
{ if (me == null) {
me = new DefaultFactory();
}
return me;
}
void setCurrentInstance(DefaultFactory df){
me = df;
}
ExecutorService getExecutorService(){
// lookup and return ManagedExecutorService
}
}
class TestImpl extends DefaultImpl{
TestImpl(){
DefaultFactory.setCurrentInstance(this); <-- this now sets your TestImpl for any call
}
ExecutorService getExecutorService(){
ExecutorService executorService = Executors.newFixedThreadPool(5);
return executorService;
}
}
//junit
@Test
void someTest(){
new TestImpl();
// do something all your calls will use non managed executor service
}
您还可以从 junit setup() 调用 new TestImpl()。另外,如果你想让它更灵活,那么你可以有一个 BaseImpl 并让 DefaultImpl 和 TestImpl 扩展它。
希望这对您有所帮助!
关于java - 在测试中用 ExecutorService 替换 ManagedExecutorService,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37722360/