我正在尝试测试私有方法并进行以下设置:
public class MyClass { private boolean myprivatemethod(ClassB classBObject, boolean b) { // do stuff here someOtherMethod(); } private void someOtherMethod() { // more stuff } } final MyClass testsubject = PowerMockito.spy(new MyClass()); // spy is needed because "someOtherMethod" is mocked // which is not shown here for simplicity ClassB classBObject = mock(ClassB.class); boolean result = Whitebox.invokeMethod(testsubject, "myprivatemethod", classBObject, true);
这很好用,直到我尝试使用null
作为ClassB对象运行方法:
boolean result = Whitebox.invokeMethod(testsubject, "myprivatemethod", null, true);
这会导致以下异常:
java.lang.NullPointerException at java.lang.Class.isAssignableFrom(Native Method) at org.powermock.reflect.internal.WhiteboxImpl.checkIfParameterTypesAreSame(WhiteboxImpl.java:2432) at org.powermock.reflect.internal.WhiteboxImpl.getMethods(WhiteboxImpl.java:1934) at org.powermock.reflect.internal.WhiteboxImpl.getBestMethodCandidate(WhiteboxImpl.java:1025) at org.powermock.reflect.internal.WhiteboxImpl.findMethodOrThrowException(WhiteboxImpl.java:948) at org.powermock.reflect.internal.WhiteboxImpl.doInvokeMethod(WhiteboxImpl.java:882) at org.powermock.reflect.internal.WhiteboxImpl.invokeMethod(WhiteboxImpl.java:713) at org.powermock.reflect.Whitebox.invokeMethod(Whitebox.java:401) at test.myproject.TestMyClass.testMyClass(TestMyClass.java:10) 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 junit.framework.TestCase.runTest(TestCase.java:154) at junit.framework.TestCase.runBare(TestCase.java:127) at junit.framework.TestResult$1.protect(TestResult.java:106) at junit.framework.TestResult.runProtected(TestResult.java:124) at junit.framework.TestResult.run(TestResult.java:109) at junit.framework.TestCase.run(TestCase.java:118) at junit.framework.TestSuite.runTest(TestSuite.java:208) at junit.framework.TestSuite.run(TestSuite.java:203) at org.powermock.modules.junit3.internal.impl.PowerMockJUnit3RunnerDelegateImpl.run(PowerMockJUnit3RunnerDelegateImpl.java:113) at org.powermock.modules.junit3.internal.impl.JUnit3TestSuiteChunkerImpl.run(JUnit3TestSuiteChunkerImpl.java:165) at org.powermock.modules.junit3.PowerMockSuite.run(PowerMockSuite.java:51) at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130) 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)
我正在使用Powermockito 1.5。
有没有办法以null
作为参数执行方法?
答案 0 :(得分:1)
尝试使用参数匹配器:
import static org.mockito.Matchers.*;
//...
boolean result = Whitebox.invokeMethod(testsubject,
"myprivatemethod", isNull(ClassB.class), eq(true));
一旦将Matchers用于任何参数,就必须将它们用于所有参数。这在Mockito文档here中有所说明(参见关于参数匹配器的警告小节)。
答案 1 :(得分:1)
也许试试这个:
Object[] params = {null, true};
然后:
Whitebox.invokeMethod(testsubject, "myprivatemethod", params);
答案 2 :(得分:0)
PowerMock无法匹配参数类型。您可以明确告诉参数类型 -
ClassB classBObject = null;
boolean result = Whitebox.invokeMethod(testsubject,
"myprivatemethod", new Class<?>[] { ClassB.class,Boolean.class},classBObject,true);