Mockito模拟SecurityManager抛出异常

本文介绍了Mockito模拟SecurityManager抛出异常的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我正在尝试模拟 SecurityManager 类。当我运行以下代码时，Mockito抛出异常：

I'm trying to mock the SecurityManager class. When I run the following code, Mockito throws an exception:

@After public void tearDown() { SecurityManager securityManagerMock = mock(SecurityManager.class); System.setSecurityManager(securityManagerMock); }

堆栈跟踪是无限重复的以下行：

The stack trace is the following lines repeated indefinitely:

at org.mockito.internal.creation.MethodInterceptorFilter.intercept(MethodInterceptorFilter.java:42) at $java.lang.SecurityManager$$EnhancerByMockitoWithCGLIB$$3ceafc0f.checkMemberAccess(<generated>) at java.lang.Class.checkMemberAccess(Class.java:2157) at java.lang.Class.getDeclaredField(Class.java:1879) at org.mockito.internal.creation.cglib.CGLIBHacker.reflectOnCreateInfo(CGLIBHacker.java:44) at org.mockito.internal.creation.cglib.CGLIBHacker.setMockitoNamingPolicy(CGLIBHacker.java:20) at org.mockito.internal.creation.MethodInterceptorFilter.intercept(MethodInterceptorFilter.java:42) at $java.lang.SecurityManager$$EnhancerByMockitoWithCGLIB$$3ceafc0f.checkMemberAccess(<generated>) at java.lang.Class.checkMemberAccess(Class.java:2157) at java.lang.Class.getDeclaredField(Class.java:1879) at org.mockito.internal.creation.cglib.CGLIBHacker.reflectOnCreateInfo(CGLIBHacker.java:44) at org.mockito.internal.creation.cglib.CGLIBHacker.setMockitoNamingPolicy(CGLIBHacker.java:20) at org.mockito.internal.creation.MethodInterceptorFilter.intercept(MethodInterceptorFilter.java:42) at $java.lang.SecurityManager$$EnhancerByMockitoWithCGLIB$$3ceafc0f.checkMemberAccess(<generated>) at java.lang.Class.checkMemberAccess(Class.java:2157) at java.lang.Class.getDeclaredField(Class.java:1879) at org.mockito.internal.creation.cglib.CGLIBHacker.reflectOnCreateInfo(CGLIBHacker.java:44) at org.mockito.internal.creation.cglib.CGLIBHacker.setMockitoNamingPolicy(CGLIBHacker.java:20)

我在这里做错了什么？

推荐答案

PS！您还可以模拟对getSecurityManager（）方法的静态方法调用。

PS! You could also mock static method call to getSecurityManager() method.

模拟静态方法请参阅 code.google/p/powermock/wiki/MockitoUsage

在班级添加@PrepareForTest。

Add @PrepareForTest at class level.

@PrepareForTest(System.class); // System.class contains static methods

调用PowerMockito.mockStatic（）来模拟静态类（使用PowerMockito.mockStaticPartial（类，方法）来模拟特定方法）：

Call PowerMockito.mockStatic() to mock a static class (use PowerMockito.mockStaticPartial(class, method) to mock a specific method):

PowerMockito.mockStatic(System.class);

只需使用Mockito.when（）来设定您的期望：

Just use Mockito.when() to setup your expectation:

Mockito.when(System.getSecurityManager()).thenReturn(securityManagerMock);