添加一个 TestExecutionListener

Question

我知道如果我需要使用精确的实现 TestExecutionListener，它会阻止加载默认的 TestExecutionListeners。如果我的测试 class 像

@RunWith(SpringJUnit4ClassRunner.class)
@TestExecutionListeners({MyCustomTestExecutionListener.class})
@ContextConfiguration(locations = { "classpath:test-ApplicationContext.xml" })
public class CabinetMembershipServiceImplTest {
     ...
}

MyCustomTestExecutionListener 将是唯一加载的侦听器，它使我的测试执行失败。

当我在不指定任何 TestExecutionListener 的情况下启动我的测试并挖掘 Spring 的日志时，我可以找到：

getDefaultTestExecutionListenerClassNames : Loaded default TestExecutionListener class names from location [META-INF/spring.factories]: [org.springframework.test.context.web.ServletTestExecutionListener, org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener, org.springframework.test.context.support.DependencyInjectionTestExecutionListener, org.springframework.test.context.support.DirtiesContextTestExecutionListener, org.springframework.test.context.transaction.TransactionalTestExecutionListener, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener]

所以如果我想添加我的 TestExecutionListener，我需要在我的测试中指定（除了想要的实现之外）所有这些默认的 TestExectionListeners class :

@RunWith(SpringJUnit4ClassRunner.class)
@TestExecutionListeners({
    ServletTestExecutionListener.class,
    DirtiesContextBeforeModesTestExecutionListener.class,
    DependencyInjectionTestExecutionListener.class,
    DirtiesContextTestExecutionListener.class,
    TransactionalTestExecutionListener.class,
    SqlScriptsTestExecutionListener.class,
    MyCustomTestExecutionListener.class})
@ContextConfiguration(locations = { "classpath:test-ApplicationContext.xml" })
public class CabinetMembershipServiceImplTest {
     ...
}

有没有一种方法可以只添加一个（或多个）TestExecutionListener，而不必从默认配置或 "overriding" 默认配置中显式声明每个侦听器？

Answer 1

import org.springframework.test.context.TestExecutionListeners.MergeMode;

@TestExecutionListeners(value = { MyCustomTestExecutionListener.class }, mergeMode = MergeMode.MERGE_WITH_DEFAULTS)

Answer 2

Is there a way of just adding one (or more) TestExecutionListener, whithout having to explicitly declare each listener from the default configuration nor "overriding" the default ones?

是的，自 Spring Framework 4.1 以来这是可能的，并且在 @TestExecutionListeners 的 Javadoc 和参考手册的 Merging TestExecutionListeners 部分中都有明确的记录。下面的例子直接取自参考手册

@ContextConfiguration
@TestExecutionListeners(
    listeners = MyCustomTestExecutionListener.class,
    mergeMode = MERGE_WITH_DEFAULTS
)
public class MyTest {
  // class body...
}

此致，

Sam（Spring TestContext Framework 的作者）

添加一个 TestExecutionListener

Adding a TestExecutionListener

java

testing

spring

spring-test