spring-boot - 无法在 Spring Boot 项目中使用 SpringJUnit4ClassRunner 运行 powermockrule

Question

我有一个 spring boot 项目，需要使用 spring test runner 进行测试(以便我可以获得真实的应用程序上下文)并模拟静态方法。

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes= MyApplication.class)
@PrepareForTest(StaticClass.class)
public class StaticClassTest {

    @Rule
    public PowerMockRule rule = new PowerMockRule();

    @Autowired
    HelloCmd hello;

    @Test
    public void testGetOne() {
        mockStatic(StaticClass.class);
        when(StaticClass.getNumber()).thenReturn(2);
        System.out.println(hello.getNumber());
    }
}

运行测试时我收到以下错误消息:

com.thoughtworks.xstream.converters.ConversionException: hello.hystrix.commands.HelloCmd$$EnhancerBySpringCGLIB$$a27be1be : hello.hystrix.commands.HelloCmd$$EnhancerBySpringCGLIB$$a27be1be
---- Debugging information ----
message             : hello.hystrix.commands.HelloCmd$$EnhancerBySpringCGLIB$$a27be1be
cause-exception     : com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message       : hello.hystrix.commands.HelloCmd$$EnhancerBySpringCGLIB$$a27be1be
class               : hello.hystrix.commands.StaticClassTest
required-type       : hello.hystrix.commands.StaticClassTest
converter-type      : com.thoughtworks.xstream.converters.reflection.ReflectionConverter
path                : /org.powermock.modules.junit4.rule.PowerMockStatement$1/outer-class/fNext/next/next/target/hello
line number         : 15
class[1]            : org.junit.internal.runners.statements.InvokeMethod
class[2]            : org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks
class[3]            : org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks
class[4]            : org.powermock.modules.junit4.rule.PowerMockStatement
class[5]            : org.powermock.modules.junit4.rule.PowerMockStatement$1
version             : null

如何解决这个问题？谢谢!

Answer 1

我从这里找到了修复link 使用 PowerMockRunnerDelegate 而不是 PowerMockRule。

更新后的测试类将是:

@RunWith(PowerMockRunner.class)
@PowerMockRunnerDelegate(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes= MyApplication.class)
@PrepareForTest(StaticClass.class)
public class StaticClassTest {

    @Autowired
    HelloCmd hello;

    @Test
    public void testGetOne() {
        mockStatic(StaticClass.class);
        when(StaticClass.getNumber()).thenReturn(2);
        System.out.println(hello.getNumber());
    }
}