问题描述

我该如何处理是安装一个安全管理器，该安全管理器在调用System.exit时会引发异常。然后是捕获异常且不会使测试失败的代码。

public class NoExitSecurityManager
    extends java.rmi.RMISecurityManager
{
    private final SecurityManager parent;

    public NoExitSecurityManager(final SecurityManager manager)
    {
        parent = manager;
    }

    public void checkExit(int status)
    {
        throw new AttemptToExitException(status);
    }

    public void checkPermission(Permission perm)
    {
    }
}

然后在代码中，如下所示：

catch(final Throwable ex)
{
    final Throwable cause;

    if(ex.getCause() == null)
    {
        cause = ex;
    }
    else
    {
        cause = ex.getCause();
    }

    if(cause instanceof AttemptToExitException)
    {
        status = ((AttemptToExitException)cause).getStatus();
    }
    else
    {
        throw cause;
    }
}

assertEquals("System.exit must be called with the value of " + expectedStatus, expectedStatus, status);

解决方法