Mock a Class using PowerMock without running in Junit

@Runwith(PowerMockRunner.class)
@PrepareForTest(Test.class)
public class A {
    public static void main(String []args){
        PowerMockito.mockStatic(Test.class);
        when(Test.foo()).thenReturn(true);
        B.foo();
    }
}

The implementation of B is something like this

public class B{
    public static void foo(){
        boolean f = Test.foo();
    }
}

I'm writing code to test B.foo() which calls Test.foo() I want to mock Test.foo() to always return true. But when I run this code it is producing an error when() requires an argument which has to be 'a method call on a mock . I do not have permission to edit class B or class Test. If I make the method in class A as Junit it is working fine. But I cannot running it as Junit as I'm running this on a lot of input. Is there is way to mock a method without the Junit?