尝试使用mockito和powermock模拟私有方法时获取java.lang.NullPointerException
我试图用mockito/powermock模拟一个私有方法。我得到NullpointerException尝试使用mockito和powermock模拟私有方法时获取java.lang.NullPointerException,java,unit-testing,testng,mockito,powermock,Java,Unit Testing,Testng,Mockito,Powermock,我试图用mockito/powermock模拟一个私有方法。我得到NullpointerException 我尝试做的一个简单示例是: 实际课程 import com.siriusforce.plugin.common.PluginSystem; import com.wellsfargo.core.business.service.dp.fulfillment.MockitoBusinessService; public class MockitoBusinessOperationImpl
我尝试做的一个简单示例是: 实际课程
import com.siriusforce.plugin.common.PluginSystem;
import com.wellsfargo.core.business.service.dp.fulfillment.MockitoBusinessService;
public class MockitoBusinessOperationImpl implements MockitoBusinessOperation{
private MockitoBusinessService mockitoBusinessService = PluginSystem.INSTANCE.getPluginInjector().getInstance(MockitoBusinessService.class);
private Long Id;
public String creditAproved( Long Id){
System.out.println("Came Inside MockitoBusinessOperationImpl");
this.Id = Id;
if (this.Id != null){
System.out.println("Inside creditaproved If statement");
String Report = mockitoBusinessService.creditReport(this.Id);
System.out.println("Mock Object Injected from test class "+ Report);
return Report;
} else
return "Went to Else Part";
}
private String inTestMethod(Long Id){
return "this is working";
}
}
测试类:
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.when;
import static org.powermock.api.mockito.PowerMockito.doReturn;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import com.siriusforce.plugin.common.PluginSystem;
public class MockitoBusinessServiceTest {
@Mock
MockitoBusinessService MockitoBusinessService ;
@InjectMocks
private MockitoBusinessOperation MockitoBusinessOperation = PluginSystem.INSTANCE.getPluginInjector().getInstance(MockitoBusinessOperation.class);
private Long Id;
@BeforeMethod
public void init() {
MockitoAnnotations.initMocks(this);
this.Id = 123L;
}
@PrepareForTest(MockitoBusinessOperation.class)
@Test(enabled = true)
public void testReCalculatePrepaids() throws Exception {
MockitoBusinessOperation = spy(MockitoBusinessOperation);
doReturn("this will work hopefully").when(MockitoBusinessOperation, "inTestMethod", this.Id);
when(MockitoBusinessService.creditReport(this.Id)).thenReturn(new String("Decline by only Me"));
String mainReport = MockitoBusinessOperation.creditAproved(this.Id);
System.out.println("Indirect Call from actual class MainReport " + mainReport);
}
}
当我试着运行它时,我得到一个NullPointerException
:任何解决这个问题的建议,或者任何其他模仿私有方法的方法。我不想使用给出的建议来保护方法,这意味着改变实际的方法。我不想对实际情况做任何改变
class method
<failure type="java.lang.NullPointerException">java.lang.NullPointerException
at org.powermock.api.mockito.internal.expectation.PowerMockitoStubberImpl.addAnswersForStubbing(PowerMockitoStubberImpl.java:68)
at org.powermock.api.mockito.internal.expectation.PowerMockitoStubberImpl.prepareForStubbing(PowerMockitoStubberImpl.java:123)
at org.powermock.api.mockito.internal.expectation.PowerMockitoStubberImpl.when(PowerMockitoStubberImpl.java:91)
at com.wellsfargo.core.business.service.dp.fulfillment.MockitoBusinessServiceTest.testReCalculatePrepaids(MockitoBusinessServiceTest.java:54)
类方法
java.lang.NullPointerException
位于org.powermock.api.mockito.internal.expectation.PowerMockitoStubberImpl.addanswersforstubing(PowerMockitoStubberImpl.java:68)
位于org.powermock.api.mockito.internal.expectation.PowerMockitoStubberImpl.prepareforstubing(PowerMockitoStubberImpl.java:123)
位于org.powermock.api.mockito.internal.expectation.PowerMockitoStubberImpl.when(PowerMockitoStubberImpl.java:91)
在com.wellsfargo.core.business.service.dp.fulfillment.MockitoBusinessServiceTest.TestRecreactePrepaids(MockitoBusinessServiceTest.java:54)上
您必须使用
PowerMockito.spy()
而不是Mockito.spy()
尝试导入
静态org.powermock.api.mockito.PowerMockito.spy代码>我发现了NullPointerException:只需将PowerMockito添加到spy方法中即可MockitoBusinessOperation=PowerMockito.spy(MockitoBusinessOperation);'现在的问题是模仿私有方法,虽然我已经模仿了私有方法,但它仍然得到调用。有人发布了这个问题。但这个解决方案对我不起作用。任何关于为什么模拟没有像预期的那样得到反映的建议。您使用的是doWhen()风格的模拟吗?你能发布一个新的代码样本或修改你的问题吗?很容易被弄糊涂。谢谢