SecurityManager的Mockito模拟抛出异常

Question

我正在尝试嘲笑SecurityManager课堂。当我运行以下代码时，Mockito会引发异常：

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

堆栈跟踪是无限重复的以下几行：

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？

Answer 1

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

模拟静态方法请参见maunal，网址为http://code.google.com/p/powermock/wiki/MockitoUsage

在类级别添加@PrepareForTest。

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

调用PowerMockito.mockStatic（）模拟一个静态类（使用PowerMockito.mockStaticPartial（class，method）模拟一个特定方法）：

PowerMockito.mockStatic(System.class);

只需使用Mockito.when（）来设置您的期望：

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