Call a test from within a test junit

Hi,

I am using Junit 4.7 and I have the following in my test class A:

@BeforeClass
public void setup () {
//Here I want to class another test class, called Setup, that sets
preconditions for all tests in my test class A.

}


I want to keep it as a test since the I know if any of the setup steps
fail.
How can I call Setup and execute methods from my class A?

Setup
=====

public class Setup extends TestCase{
public Setup() throws Exception {
super("Setup");
}

@Test
public void mySetupStep1() throws Exception{

}

@Test
public void mySetupStep2() throws Exception{

}

}
.

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