[英]Get java.lang.NullPointerException when tried to mock private method with mockito and powermock
我試圖用mockito / powermock模擬一個私有方法。 我得到NullpointerException
我想要做的簡單示例是:
實際課程
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";
}
}
測試類:
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);
}
}
當我嘗試運行它時,我得到一個NullPointerException
:任何解決此問題或任何其他方式模擬私有方法的建議。 我不想使用給出保護方法的建議,這意味着改變實際方法。 我不希望任何改變實際
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)
您必須使用PowerMockito.spy()
而不是Mockito.spy()
!
嘗試導入static org.powermock.api.mockito.PowerMockito.spy;
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