在将单元测试postmortem编码到另一个项目创建的代码时,我遇到了如何使用initBinder模拟与控制器绑定的验证器的这个问题？

通常我会考虑确保我的输入是有效的,并且在验证器中进行一些额外的调用,但在这种情况下,验证器类与通过几个数据源进行检查相结合,并且测试变得相当麻烦.耦合可追溯到使用的一些旧的常用库,并且不在我目前的工作范围内来修复它们.

起初,我试图使用PowerMock和嘲笑静态方法来嘲笑验证器的外部依赖关系,但是最终遇到一个类,当类被创建时需要一个数据源,没有找到一个方法.

然后,我试图使用普通的mockito工具来嘲笑验证器,但是也没有.然后尝试将验证器设置在mockMvc调用中,但不会为验证器注册@Mock注释.最后跑到this question.但是由于控制器本身没有现场验证器,所以也失败了.那么,我该如何解决这个问题呢？

验证器：

public class TerminationValidator implements Validator {

// JSR-303 Bean Validator utility which converts ConstraintViolations to Spring's BindingResult

private CustomValidatorBean validator = new CustomValidatorBean();

private Class extends Default> level;

public TerminationValidator(Class extends Default> level) {

this.level = level;

validator.afterPropertiesSet();

}

public boolean supports(Class> clazz) {

return Termination.class.equals(clazz);

}

@Override

public void validate(Object model,Errors errors) {

BindingResult result = (BindingResult) errors;

// Check domain object against JSR-303 validation constraints

validator.validate(result.getTarget(),result,this.level);

[...]

}

[...]

}

控制器：

public class TerminationController extends AbstractController {

@InitBinder("termination")

public void initBinder(WebDataBinder binder,HttpServletRequest request) {

binder.setValidator(new TerminationValidator(Default.class));

binder.setAllowedFields(new String[] { "termId[**]","terminationDate","accountSelection","iban","bic" });

}

[...]

}

测试类：

@RunWith(MockitoJUnitRunner.class)

public class StandaloneTerminationTests extends BaseControllerTest {

@Mock

private TerminationValidator terminationValidator = new TerminationValidator(Default.class);

@InjectMocks

private TerminationController controller;

private MockMvc mockMvc;

@Override

@Before

public void setUp() throws Exception {

initMocks(this);

mockMvc = standaloneSetup(controller)

.setCustomArgumentResolvers(new TestHandlerMethodArgumentResolver())

.setValidator(terminationValidator)

.build();

ReflectionTestUtils.setField(controller,"validator",terminationValidator);

when(terminationValidator.supports(any(Class.class))).thenReturn(true);

doNothing().when(terminationValidator).validate(any(),any(Errors.class));

}

[...]

}

例外：

java.lang.IllegalArgumentException: Could not find field [validator] of type [null] on target [my.application.web.controller.TerminationController@560508be]

at org.springframework.test.util.ReflectionTestUtils.setField(ReflectionTestUtils.java:111)

at org.springframework.test.util.ReflectionTestUtils.setField(ReflectionTestUtils.java:84)

at my.application.web.controller.termination.StandaloneTerminationTests.setUp(StandaloneTerminationTests.java:70)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)

at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)

at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)

at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)

at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)

at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)

at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)

at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)

at org.junit.runners.ParentRunner.run(ParentRunner.java:309)

at org.mockito.internal.runners.JUnit45AndHigherRunnerImpl.run(JUnit45AndHigherRunnerImpl.java:37)

at org.mockito.runners.MockitoJUnitRunner.run(MockitoJUnitRunner.java:62)

at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)

at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)