在將單元測試postmortem編碼到另一個項目創建的代碼時,我遇到了如何使用initBinder模擬與控制器綁定的驗證器的這個問題？

通常我會考慮確保我的輸入是有效的,并且在驗證器中進行一些額外的調用,但在這種情況下,驗證器類與通過幾個數據源進行檢查相結合,并且測試變得相當麻煩.耦合可追溯到使用的一些舊的常用庫,并且不在我目前的工作范圍內來修復它們.

起初,我試圖使用PowerMock和嘲笑靜態方法來嘲笑驗證器的外部依賴關系,但是最終遇到一個類,當類被創建時需要一個數據源,沒有找到一個方法.

然后,我試圖使用普通的mockito工具來嘲笑驗證器,但是也沒有.然后嘗試將驗證器設置在mockMvc調用中,但不會為驗證器注冊@Mock注釋.最后跑到this question.但是由于控制器本身沒有現場驗證器,所以也失敗了.那么,我該如何解決這個問題呢？

驗證器：

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" });

}

[...]

}

測試類：

@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)

總結

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